63results about How to "Good repair function" patented technology

The invention provides a guided tissue regeneration composite membrane material. The guided tissue regeneration composite membrane material is characterized by being in a double-layer membrane structure, wherein the double-layer membrane structure comprises a loose layer on the bottom layer and a compact layer on the upper layer. According to a second aspect, the invention provides a preparation method of the guided tissue regeneration composite membrane material. According to the guided tissue regeneration composite membrane material and the preparation method, the biological membrane material having the customized specification, having the tissue integration activity, and being capable of promoting the growth of the osteoblasts can be printed by adopting a three-dimensional printer, a material with the capacity of promoting the periodontal ligament cell adhesion and the periosteum cell adhesion is prepared by combining with the electrospinning technology, and a medicine having the antimicrobial activity is combined, therefore, the guided tissue regeneration composite membrane material has good biocompatibility, good bone repair function and good bacteria resisting function, and can be used for the periodontal guided tissue regeneration treatment and periosteum defect repair.

Methods of automatically generating trouble tickets for network elements which are in failure and affecting network performance. The network elements are sectionalized into their basic components so that the failure in the elements can be localized and diagnosed. Once the failure has been diagnosed, a trouble ticket is automatically generated my network maintenance so that the repair of the element can be scheduled and undertaken. The trouble tickets are made available via the network to customers that are concerned that circuits on which they operate and which may be malfunctioning due to the network element failure can be kept informed of the status of the repair and the failure.

The invention provides a preparation method of small molecule peptides of vinasse and application of small molecule peptides of vinasse in skin care products. The preparation method comprises the following steps: S1, carrying out vacuum extrusion, cooling, crushing and sieving on vinasse, the water content of which is 11-22%; S2, carrying out alkali dissolution and acid settlement on the vinasse expanded powder obtained in the S1 to extract vinasse proteins so as to obtain vinasse protein extract; and S3, carrying out hydrolysis on the vinasse protein extract extracted in the S2 with proteolytic enzymes, and carrying out enzyme deactivation, filtration, concentration, freezing and drying to obtain the small molecule peptides of vinasse. By deeply processing the vinasse by adopting a special vacuum expansion technology, the extraction ratio of the vinasse proteins is increased effectively; meanwhile, by adopting the special proteolytic enzymes, the small molecule peptides of vinasse with relatively good moisturizing and repairing functions can be obtained. In addition, the small molecule peptides of vinasse are applied to skin care products, so that the moisturizing and repairing functions of the skin care products are improved while the additional value of the vinasse is increased.

Methods of automatically generating trouble tickets for network elements which are in failure and affecting network performance. The network elements are sectionalized into their basic components so that the failure in the elements can be localized and diagnosed. Once the failure has been diagnosed, a trouble ticket is automatically generated my network maintenance so that the repair of the element can be scheduled and undertaken. The trouble tickets are made available via the network to customers that are concerned that circuits on which they operate and which may be malfunctioning due to the network element failure can be kept informed of the status of the repair and the failure.

The invention discloses a method for controlling lake eutrophication by regulating and controlling submerged plant growth through water depth. The method mainly comprises five steps, namely selecting a critical time point to plant submerged plants, selecting a critical time point to regulate and control the water depth and regulating the planting density of the submerged plants to enable the submerged plants to obtain the maximum biomass and provide such environmental conditions as optimal illumination, water temperature and the like, so as to control eutrophic water bodies more effectively. The method disclosed by the invention is convenient to implement and operate, low in submerged plant colony recover cost, capable of saving manpower and material resources, low in subsequent maintenance cost, high in plant survival rate and good in purification effect.

The invention discloses bioprotein sponge and a preparation method thereof. According to the characteristics that internal cells of a human body and an animal body adapt to cell growth environments, the bioprotein is freezed into a dry sponge shape through freeze drying technology by utilizing intercellular substances as controlled-release carrieres of growth factors and acts on the trauma of the human body or the animal body in controlled-release medicament feeding mode. The preparation method of the bioprotein sponge changes the traditional preparation process, adopts S / D virus inactivation, and adds protective agent to reduce probability of virus cross infection of people and livestock simultaneously. The CM cation chromatographic purification process improves purity of bioprotein, promotes stanching and tissue union effect of the bioprotein sponge and reduces clinical side effect. An ultrafiltration process is adopted to replace a dialysis process, so that preparation period is shortened, activity of the bioprotein is protected, and production cost is reduced. A method of heating inactivation virus replaces the method of cobalt60 radiation sterilization, so that the fact that radiation rays bring damage to products is avoided, the activity of the bioprotein is protected, and safe and reliable use of products in clinical application is achieved.

The invention relates to automotive lubricating oil and industrial lubricating oil, and discloses efficient, anti-wear and energy-saving lubricating oil and a preparation method thereof. An efficient and energy-saving repairing agent is added to an engine lubricant, high-purity metal nanoparticles suspended in the efficient and energy-saving repairing agent form a micro rolling bearing on the friction surface of an engine, anti-wear, energy-saving and repairing functions are obvious, power can be improved, the service life of the engine can be prolonged, fuel and loss can be saved, and emission can be reduced.

The invention provides a degradable bone repair, degradable anti-infection bone repair composite scaffold material and a preparation method thereof. The composite scaffold material of the present invention is prepared through three-dimensional printing rapid prototyping, and is mainly composed of biological main body scaffold materials and antibacterial materials with bone repair function, wherein the main body support material is a composite of phosphate inorganic substances and high molecular polymers Antibacterial drugs are formulated by dissolving natural polysaccharide derivatives in phosphate buffer. The invention uses a three-dimensional printer to print a biological scaffold with bone repair activity that can be customized in specifications, and compounded with materials with antibacterial activity. Repair of bone defects.

The invention discloses a preparation method of a bone repair hydrogel and fiber pipe composite material loading growth factors. Firstly, a spinning solution is prepared, the spinning solution is arranged in a syringe, a nanometer fiber reticular layer is prepared by high-voltage electrospinning, sodium alginate modified by RGD (Arg-Gly-Asp) is irradiated with gamma rays, and after irradiation, the RGD-sodium alginate is filtered to be degermed and is stored at the room temperature of -20 DEG C so as to prepare hydrogel. According to the method disclosed by the invention, the sodium alginate degraded by gamma ray irradiation can be combined with adhesive peptide in covalence to promote cell attachment; a nanometer fiber pipe is prepared through electrostatic spinning, the fiber has a diameter being the same as that of an extracellular matrix (ECM) and a large specific surface area, can improve cell attachment and migration, and is suitable for osteoblast differentiation and stem cell in vitro regeneration; and the composite material consisting of the bone repair hydrogel and the fiber pipe can guide bone regeneration by hydrogel injected with the sodium alginate and the protein electrostatic spinning nanometer fiber reticular film, promotes the regeneration and repair functions of vessels, can be used as a bone repair transmission system, has a simple production process and is easy to operate.

The invention discloses moisturizing gel containing hydrolyzed pearl powder flexible nano liposome. The moisturizing gel is prepared by heating, mixing and homogenizing the hydrolyzed pearl powder flexible nano liposome, sodium hyaluronate, beta-glucan, acryloyl dimethyl ammonium taurine copolymer, hydroxyethyl urea, panthenol, nicotinamide, skin moistening esters, N,N'-1,2-ethanediylbis-1-aspartic acid and deionized water. The moisturizing gel is simple in process, multiple nutrition substances including amino acid, microelements, polypeptide and the like contained in the hydrolyzed pearl powder are utilized, metabolism of skin epithelial cells and dermal fibroblasts is effectively enhanced, and the skin repair function is promoted. The moisturizing gel is natural, mild, nearly free of stimulation and capable of penetrating through the skin surface of the human body easily, is infused with cells to achieve effects, can be used for moistening skin, preserving moisture and repairing skin barriers for a long time, has good water supplementation, moisture preservation and repairing effects for oily and mixed skin, sensitive skin and the like, and the skin can also be effectively whitened.

The invention discloses a flexible barrier having restoration and vertical obstruction functions. The flexible barrier having the restoration and vertical obstruction functions comprises a restoration functional portion and a vertical obstruction portion. The restoration functional portion comprises two layers of nonwoven geotextile and a restoration functional material layer placed between the two layers of nonwoven geotextile. The vertical obstruction portion is composed of HDPE geomembrane. The vertical obstruction portion is fixed to the outer side of one of the two layers of nonwoven geotextile of the restoration functional portion. The flexible barrier having the restoration and vertical obstruction functions is established in the manner that the restoration functional portion and the HDPE geomembrane are combined, the problems that a traditional vertical anti-seepage barrier do not have the restoration function, and a permeable reactive barrier do not have the vertical obstruction function are solved, and the flexible barrier having the restoration and vertical obstruction functions has the advantages of being simple in construction, good in anti-seepage effect, good in restoration function and the like.

The invention discloses pavement super-sticky thin adhesive cement sealing layer mixture and a preparation method thereof. The pavement super-sticky thin adhesive cement sealing layer mixture comprises the following components in mass percent: 30 to 50 percent of modified emulsified asphalt, 4 to 10 percent of silicate thixotropic lubricant, 10 to 20 parts of fine-grained sand, 0 to 6 percent mineral filler, water-borne epoxy resin, water-borne epoxy resin curing agent and balance of water; the total mass of the water-borne epoxy resin and the water-borne epoxy resin curing agent is 5 to 10 percent of the mass of modified emulsified asphalt, wherein a mass ratio of the water-borne epoxy resin to the water-borne epoxy resin curing agent is 1:1 to 1:2. The pavement super-sticky thin adhesive cement sealing layer mixture disclosed by the invention can effectively seal pavement micro-cracks, prevent aggregate from being loosened and falling, prevent water from downwards seeping, obvious improve pavement appearance and is low in maintenance costs.

The invention relates to an antiwear additive of lubricating oil, which is characterized by comprising 1%-5% of dispersant, 5%-20% of nanoscale metal powder and the balance of base oil, wherein the nanoscale metal powder comprises copper oxide powder, magnesium powder, chromium powder and boron powder; and the dispersant is polyisobutene-bis-succinimide or polyisobutene-multi-succinimide. A preparation method is simple and practical; in addition, the prepared additive has low cost, can play good abrasion resistant effect on various base oils and has good repairing function but no corrosion effect inside a machine.

The invention relates to a medicament formula for treating stomach illness in a medical formula field, particularly the medicament formula for treating stomach illness with advantages of short treatment time, low cost and good treatment effect. The medicament is prepared by mixing cobra fat, long-noded pit viper, zaocys dhumnade fat and pearl tea oil based on a certain refinement manner and a certain proportion. The medicament formula can treat stomach illness in a very short time, about a half month, has advantages of simpleness and low cost, and can save unnecessary expenditure for a patient. The medicament formula will not generate excitant on stomach in the treatment effect, and does not generate any other side-effects.

The invention provides a quintuple-treatment ginseng cream and a preparation method thereof, and relates to the technical field of cosmetics. The quintuple-treatment ginseng cream is prepared from the following components in fraction by weight: water, butanediol, dicaprylyl carbonate, isononyl isononanoate, cetearyl glucoside, hydroxyethyl acrylate / sodium acryloyl dimethyl taurate copolymer, caprylic acid / capric triglyceride, glyceryl stearate, ginseng extract, motherwort extract, sargassum fusiforme setch extract, tea leaf extract, hydrolyzed royal jelly protein, avocado tree butter, beta-glucan, carbomer, polydimethylsiloxane, tridecyl trimellitate, sodium stearoyl glutamate, tocopherol, triethanolamine, poly(sodium L-glutamate), phenoxyethanol, ethylhexylglycerin, essence, and coloring agent. The quintuple-treatment ginseng cream and the preparation method have theadvantages that multiple treatment functions are realized, and the treatment function is strong.

The invention discloses a nano iodine-chitosan cervical disease treating membrane agent and a preparation method of the membrane. The treating membrane is prepared by adding plasticizer and adsorbent to chitosan, povidone iodine, dialkyl quaternary ammonium salt and chlorhexidine acetate used as main effective ingredients. The treating membrane disclosed by the invention has killing activity to multiple pathogenic microorganisms, has no irrigation to mucosa, can relieve itching, arrest bleeding and promote the growth of epidermic tissues, can be used for treating colpitis, trichomonas vaginalis, cervicitis, cervical erosion and other gynecological diseases, has better repair action on vaginal and cervical injury, and can effectively prevent the propagation of venereal diseases such as gonorrhoea, syphilis, AIDS (acquired immunodeficiency syndrome) and the like.

The invention discloses an antibody-based targeting medicine used for repairing damaged tissues. The medicine comprises stem cell specific antibodies and damaged part specific antibodies. The stem cell specific antibodies and damaged part specific antibodies are directly or simultaneously coupled on nano-grade or micron-grade iron particles through chemical covalent bonds. During an administration process employing the targeting medicine obtained by coupling the specific antibodies and the iron particles, and after the administration process, a lesion area can be covered by using an external magnetic field. The targeting medicine obtained by coupling the specific antibodies and the iron particles can also be used as an MRI contrast agent. The antibody-based targeting medicine used for repairing damaged tissues is safe and reliable. With the medicine, human body intrinsic stem cell reparation function can be optimized, and effector molecules can be delivered with targets. Therefore, a novel safe treatment means with advantages of high-efficiency reparation, no toxicity, and no side effect can be provided. With the external magnetic field, the targeting effect of the medicine can be improved, and side effect can be reduced. Also, the antibody-based targeting medicine used for repairing damaged tissues can actively identify cardiovascular lesions, such that the medicine can be used as an MRI contrast agent.

The invention relates to micro-nano engine oil and a preparation method thereof. The micro-nano engine oil is prepared from, by mass, 40%-70% of PAO, 5%-30% of adipate, 1%-5% of polyol ester, 5%-10% of an engine oil complexing agent, 2%-12% of a viscosity index improver, 0.2%-0.5% of a pour point reducer and 0.1%-4% of a compound micro-nano antiwear agent. The micro-nano antiwear agent is micro-nano metal particles, the micro-nano metal particles are treated through the processes of centrifugal separation, grinding dispersion, centrifugal treatment and the like and finally uniformly suspend in PAO to prepare micro-nano concentrated liquid, the micro-nano concentrated liquid is mixed with engine oil mixed liquid taking the PAO as base oil, uniform dispersion of the nano particles is guaranteed, after mixing is conducted, the finished product can be obtained only by conducting constant-temperature stirring for 1 h, and therefore the production efficiency is improved.

The invention discloses a dendrobium officinale toner and particularly relates to the field of skin care products. The dendrobium officinale toner comprises, by weight, water, glycerol, propylene glycol, oat bata-gextran, a dendrobium officinale extract, polyquaternium-51, allantoin, a chelating agent, a preservative, a chrysanthellum indicum extract, a honeysuckle flower extract, a notoginseng root extract, a corydalis turtschaninovii root extract and a ginseng root extract. The toner utilizes the added oat bata-gextran, the dendrobium officinale extract, the chrysanthellum indicum extrac, the honeysuckle flower extract, the notoginseng root extract, the corydalis turtschaninovii root extract and the ginseng root extract, nutrient substances are rich, the effects of calming, diminishing inflammation and regulating skin can be achieved, meanwile skin irritation cannot be generated, and the polyquaternium-51 and allantoin are added, so that a good repairing function is achieved, the moisturizing and anti-sensitizing effects are good, the skin moisture is kept, the physiological balance of the skin moisture is maintained, and the stimulation of active substances to the skin is relieved.

The invention relates to a skin care product containing bird's nest peptides and a preparation method of the skin care product and belongs to the technical field of skin care products. The skin care product is prepared from the following raw materials in parts by weight: 10-25 parts of bird's nest peptides, 5-20 parts of pearl essence, 1-5 parts of tetrahydrocurcumin, 0-15 parts of a green tea extract and 15-35 parts of a grape seed extract. The bird's nest peptide is capable of reducing and preventing melanosis, and has excellent effects of fading spots, whitening and repairing; the tetrahydrocurcumin has an obvious antioxidant effect; the pearl essence is capable of inhibiting melanin synthesis, has an effect of scavenging free radicals and contributes to fading spots, whitening and delaying skin aging; the green tea extract is capable of eliminating ultraviolet-induced free radicals so as to protect normal functions of melanin cells and inhibiting melanogenesis, and pigmentation canbe reduced; the grape seed extract is capable of fading pigments. Moreover, the skin care product has excellent effects of moisturizing and moistening. Due to co-actions of the multiple raw materials, the effects of removing beverage, whitening and repairing the skin can be achieved.

The invention discloses a medical adhesive with healing promoting and repairing functions. The medical adhesive is characterized by comprising the components, by weight, 20-25 parts of a-butylcyanoacrylate, 25-35 parts of a-isoctyl cyanoacrylate, 2-6 parts of styrene class thermoplastic elastomer microspheres, 25-37 parts of effective healing promoting and repairing components, 2-4 parts of sodiumalginate, 3-6 parts of sodium hyaluronate, 8-10 parts of allantoin, 1 part of hydrolyzed wheat protein, 1 part of stabilizer, 150-220 pats of compound fruit oil components and 200 parts of aquae sterilisata. The medical adhesive specially selects a variety of biological extracts with regenerative functions and adds three components of healing promoting and repairing components to promote healingand improve the repairing effect, has high bonding strength and good biocompatibility, and meets the clinical application requirements for medical adhesive.

The invention discloses a wear-resistant self-repairing polyurethane composite coating agent based on shape memory and a preparation method thereof, and belongs to the technical field of coating agent production. The preparation method comprises the following steps: carrying out prepolymerization reaction on polyester diol and diisocyanate to obtain an isocyanate group-terminated prepolymer; and introducing a monomer for forming quadruple hydrogen bonds and a ligand containing a metal coordination bond structural unit into the prepolymer to obtain the wear-resistant self-repairing polyurethane composite coating agent based on shape memory. The process is simple, easy to control and suitable for industrial production. Quadruple hydrogen bonds and metal ion coordination bonds are used as sacrifice bonds to dissipate energy and improve toughness and strength through a cross-linking effect, and self-repairing efficiency is promoted through interaction among molecular chains; a shape memory effect is realized by utilizing the crystallization reversibility of a molecular chain, and deformation caused by friction or self-repairing is prevented; and the wear-resistant self-repairing polyurethane composite coating agent is good in stability, excellent in tribological performance and high in repairing efficiency and can be applied to various fields.

The invention discloses a functionalized nerve regeneration collagen scaffold, a preparation method and an application thereof. The functionalized nerve regeneration collagen scaffold comprises: a linear, ordered collagen fiber scaffold for guiding nerve regeneration, and a CBD-SDF having collagen binding ability and combined with the collagen fiber scaffold. The functionalized nerve regenerationcollagen scaffold provided by the invention can slowly release CBD-SDF to improve the efficiency of recruiting endogenous neural stem cells, also provides a good microenvironment for cell adhesion, axon growth and elongation, and also inhibits glial scar formation. In addition, the functionalized nerve regeneration collagen scaffold with VPA are combined to promote the homing of endogenous neuralstem cells to the injury site after spinal cord injury and regulate the differentiation into neurons, promote nerve regeneration and synapse formation, inhibits of glial scar formation, and ultimatelypromotes spinal cord injury repair and motor function improvement.

The invention provides a pectin hydrogel dressing for wound ulcer repair and a preparation method of the dressing, and relates to the technical field of pharmaceutical production. The pectin hydrogeldressing is prepared from the following raw materials in parts by weight: 35-45 parts of pectin, 5-15 parts of chitosan, 4-6 parts of vitamin E, 4-6 parts of repair essence, 2-4 parts of collagen, 2-4parts of amino acid, 1-2 parts of hyaluronic acid, 2-4 parts of sulfur, 2-4 parts of vitamin B3 and 1-2 parts of cross-linking agents. The dressing overcomes the defects in the prior art, and thus the healing speed and healing effect of the hydrogel dressing can be effectively improved, the inflammation and swelling can be rapidly diminished, the wound ulcer is adjusted and the healing is promoted, the growth of newborn epithelium and granulation tissue is accelerated, the healing effect is good, and bacteria can be effectively resisted, so that the dressing is suitable for popularization.

The invention discloses a composite bone tissue repair material and a preparation method thereof, wherein the composite bone tissue repair material is formed by composite cross-linking of a cuttlefish bone powder, hydroxyapatite and collagen, wherein the mass ratio of the cuttlefish bone powder to hydroxyapatite to collagen is (0.3-0.5) to (20-60) to 100. The obtained tissue repair material has good porosity, has good biocompatibility, also has the effects of restraining sores and relieving pain, and is favorable for quick healing of wounds.

The invention relates to a Chinese patent medicine compound preparation and particularly relates to a compound preparation for treating rhinosinusitis. The compound preparation is characterized by containing the water extract and decoction of fresh and mature fig, arborvitae tops, echinacea, baikal skullcap root, cocklebur fruit and liquorice, then ethanol precipitation is carried out, the supernatant liquid is taken and concentrated into clear paste, and the clear paste, sucrose and dextrin are uniformly mixed and then dried to be prepared into tablets or particles. The compound preparation provided by the invention has the functions of clearing away heat and toxic material, reducing swelling and alleviating pain, expelling wind and removing dampness, purging fire for removing toxin, promoting blood circulation and arresting bleeding, enhancing the immunity and resistance of the organism, improving symptoms and promoting nasal cavity and nasal sinus mucosa functions, and does not have toxic and side effects. Clinical applications prove that the compound preparation provided by the invention has obvious curative effects on postoperative recovery of acute and chronic rhinitis, paranasal sinusitis, rhinopharyngitis and nose and sinus parts, adjuvant therapy of malignant tumors at the parts and especially postoperative radiotherapy of patients, and has the obvious advantages of good performance, easiness in preparation, low cost, no toxic and side effects and the like.

The invention discloses a preparation method of a bionic multifunctional composite sponge dressing. The method specifically comprises the following steps that firstly, a hyaluronic acid solution is enabled to react with dopamine to obtain a dopamine-grafted hyaluronic acid solution; secondly, the dopamine-grafted hyaluronic acid solution obtained in the previous step is mixed with a gelatin solution according to different volume ratios, then tyrosinase is added into a mixed system, and freeze-drying is conducted to obtain a composite dressing matrix; and finally, the prepared composite dressing matrix is soaked in a polyhexamethylene biguanide solution (PHMB), a titanium dioxide nano-particle solution (TiO2NPs) and a mixed solution of polyhexamethylene biguanide and titanium dioxide nano-particles, drying is conducted after ultrasonic concussion, and three kinds of solution-loaded composite sponge dressings are obtained accordingly. The obtained composite sponge dressing not only has the strong mechanical property and good adhesion, but also has the good antibacterial property, biocompatibility and the strong hemostatic ability.

The invention belongs to the technical field of network transmission and discloses handmade soap and a preparation method. The determination of a raw material ratio of the handmade soap comprises determination of an oil use amount and determination of an alkali use amount; the determination of the oil use amount is to determine amounts of oil products needed for preparing one piece of soap: the use amount of shinyleaf yellowhorn oil is 47g, the use amount of coconut oil is 16g and the use amount of palm oil is 16g; the determination of the alkali use amount is to determine the use amount of alkali needed for preparing one piece of the soap: the use amount of sodium hydroxide is 14.5g. By adopting the handmade soap provided by the invention, the problems of existing handmade soap that the raw material is single and the pertinence is relatively weak are solved; the shinyleaf yellowhorn oil is added into the handmade soap; a lot of the shinyleaf yellowhorn oil is utilized so that large-scale planting of shinyleaf yellowhorn is promoted. The shinyleaf yellowhorn oil is applied so that a current situation that raw oil for the handmade soap at present mainly utilizes olive oil can be changed and the importing ratio of the olive oil in China is reduced.

The invention relates to an impulse type charging method which comprises the steps that the output voltage of a charger is reduced, so that the output voltage of the charger is lowered to the voltage at the battery end; at this time, electric energy stored in a capacitive element in another device in parallel connection with a battery charges the battery, so that the voltage of the capacitive element is also lowered to the voltage at the battery end, and absorption of impulses by the capacitive element is eliminated; a negative impulse discharging loop is controlled to be switched on, so that a negative impulse is formed and used for discharging the battery, and polarization of the battery in the charging process is eliminated; the output voltage of the charger is increased, so that the output voltage of the charger is higher than the voltage at the battery end, and the battery is charged. In this way, charging efficiency is improved.

The invention relates to a compound additive of lubricating oil, which is characterized by comprising 2%-10% of nanoscale metal powder, 0.5%-2.5% of polyisobutene-bis-succinimide, 0.5%-1.5% of sulfurized calcium alkyl phenolate, 0.2%-1.5% of polymethylacrylic acid ester, 0.5%-2% of butyl-octyl zinc thiophosphate and 1%-5% of ethylene-propylene copolymer and the balance of base oil, wherein the nanoscale metal powder comprises copper oxide powder, magnesium powder and manganese powder. A preparation method is simple and practical; in addition, the prepared compound additive has low cost, playsa good abrasion resistant effect on various base oils and has good repairing function without corrosion effect to the inside of a machine.