218results about How to "Reduce softening" patented technology

A low softening point glass composition, which is substantially free from lead, bismuth and antimony and comprises oxides of vanadium, phosphorous, tellurium and iron, a softening point of the composition being 380° C. or lower.

A high silica glass composition comprising about 82 to about 99.9999 wt. % SiO₂ and from about 0.0001 to about 18 wt. % of at least one dopant selected from Al₂O₃, CeO₂, TiO₂, La₂O₃, Y₂O₃, Nd₂O₃, other rare earth oxides, and mixtures of two or more thereof. The glass composition has a working point temperature ranging from 600 to 2,000° C. These compositions exhibit stability similar to pure fused quartz, but have a moderate working temperature to enable cost effective fabrication of pharmaceutical packages. The glass is particularly useful as a packaging material for pharmaceutical applications, such as, for example pre-filled syringes, ampoules and vials.

A high silica glass composition comprising about 92 to about 99.9999 wt. % SiO₂ and from about 0.0001 to about 8 wt. % of at least one dopant selected from Al₂O₃, CeO₂, TiO₂, La₂O₃, Y₂O₃, Nd₂O₃, other rare earth oxides, and mixtures of two or more thereof. The glass composition has a working point temperature ranging from 600 to 2,000° C. These compositions exhibit stability similar to pure fused quartz, but have a moderate working temperature to enable cost effective fabrication of pharmaceutical packages. The glass is particularly useful as a packaging material for pharmaceutical applications, such as, for example pre-filled syringes, ampoules and vials.

The invention relates to a filament low-melting-point polyester fiber and a preparation method thereof. The filament low-melting-point polyester fiber is in a skin-core structure, a skin layer is made of low-melting-point polyester; a core layer is made of PET (polyethylene terephthalate); the low-melting-point polyester consists of a terephthalic acid chain segment, an isophthalic acid chain segment, an ethylene glycol chain segment, a diethylene glycol chain segment, a molecular weight modifier chain segment and a 1, 12-Dodecanediol chain segment containing branched chains; a molecular weight modifier corresponding to the molecular weight modifier chain segment is specifically a monoacid series or a diacid series; the preparation method of the filament low-melting-point polyester fiber comprises the following steps: polymerization of the low-melting-point polyester and skin-core composite spinning, so as to obtain the filament low-melting-point polyester fiber. The prepared filament low-melting-point polyester fiber has the advantages that the initial melting point is reduced, the melting speed is increased, the polyester fiber is immediately melted at the corresponding temperature, and the melting effect is good.

The invention discloses a high-throughput polyamide nanofiltration composite membrane and a preparation method thereof, which belong to the field of polymeric membrane materials. The composite membrane is prepared by the interfacial polymerization reaction between 5-(N-sulfonamido)isophthaloyl dichloride or a mixture of 5-(N-sulfonamido)isophthaloyl dichloride and 1,3,5-trimesoyl chloride and piperazine monomer, and can be widely used in a water softening process for removing bivalent cations such as Ca<2+> and Mg<2+>. The high-throughput polyamide nanofiltration composite membrane is structurally provided with an ultrathin (10nm) release layer, surface charge are low in electronegativity, the membrane surface property is smooth and hydrophilic, high throughput is shown in terms of properties, the high-throughput polyamide nanofiltration composite membrane has an excellent trapping effect on bivalent and polyvalent cations and good pollution resistance, and the high-throughput polyamide nanofiltration composite membrane can be widely applied in high-throughput domestic water purifiers, sea water desalination, brackish water pretreatment, removal of COD (chemical oxygen demand) suchas dye molecules and phenol molecules in wastewater, separation of dye/salt and material separation and concentration processes in pharmaceutical and food industries.

The invention discloses an aluminium alloy composite foil and a preparation method thereof. The foil comprises a core material and a peel material coating the core material, wherein the core material of the peel material is 3003 aluminium alloy. The peel material comprises the following components in percentage by weight: 8.0-9.0% of Si, 1-2% of Cu, 1-2% of Sn, 0.2-0.5% of Ce, and the balance being Al and inevitable impurities. The aluminium alloy composite foil has the beneficial effects that a composite strip external peel designed by the aluminium alloy composite foil can replace conventional alloy type external peel. The aluminium alloy composite foil is excellent in brazing performance, thus ensuring the processing performance of composite brazing filler metal for brazing under low temperatures and solving the problem that the brazing filler metal is difficult to braze under the low temperatures.

The invention provides a grape preservative and a preparation method thereof, which belongs to the fruit preservation field. The mentioned grape preservative includes the following ingredients with parts by weight: 0.5-3 parts of cinnamon essential oil, 0.5-2 parts of zanthoxylum bungeanum volatile oil, 0.5-2 parts of sodium alginate, 6-8 parts of sucrose fatty acid ester, 4-6 parts of polysorbate 80, 1-5 parts of propionic acid, 1-4 parts of calcium chloride, 2-4 parts of vitamin C, 2-4 parts of potassium sorbate, 10-20 parts of chitosan citrate solution and 10-20 parts of water. The preparation method comprises the steps of mixing the sodium alginate, sucrose fatty acid ester, polysorbate 80, propionic acid and water and fully dissolving them; then adding the essential oil to get composite essential oils; adding the composite essential oils into the chitosan citrate solution and blending. After picking of grapes, the diseased fruit and bad fruit are removed, the grapes are soaked in the mentioned preservation liquid for 3- 8 min. After taking out the grapes and draining them, the grapes are stored. The grape preservative mentioned in the invention can greatly reduce or delay decrease of quality and decay during storage process of grapes, which has outstanding grape preservation effect.

The invention discloses a self-maintained friction stir welding method with reversely rotating upper and lower shaft shoulders, and relates to a self-maintained friction stir welding method to solve the problems that: the upper and lower shaft shoulders have unequal diameters but rotate in the same direction with equal speed, and in the welding process, the weld heat input is large, a workpiece is easy to deform, a mixing needle is inclined to fracture, and the distribution of a weld zone temperature field, a joint structure and residual stress are asymmetric, so that the joint performance is asymmetric, and the bearing capacity of a welding structure is reduced. The method comprises the following steps of: 1, determining the size of a stirring head, namely determining the diameter of the upper shaft shoulder, the stirring needle and the lower shaft shoulder according to the thickness of a first welded workpiece and a second welded workpiece; 2, determining the use length of the stirring needle; 3, fixing the first welded workpiece and the second welded workpiece; 4, positioning the stirring head; and 5, performing friction stir welding on the first welded workpiece and the second welded workpiece, namely integrally forming the upper shaft shoulder and the stirring needle, and allowing the lower shaft shoulder and the upper shaft shoulder to rotate in opposite directions. The self-maintained friction stir welding method is used for self-maintained friction stir welding.

The invention discloses a submarine suction foundation which comprises a barrel shape body. The lateral of the upper end of the barrel shape body is provided with a circular stable disk which is formed into an integrated 'T'-shaped structure together with the barrel shape body. The invention arranges the circular stable disk at the barrel shape body of the suction foundation and presses the stable disk directly onto a soil body surface surrounding the foundation when anchoring the foundation so as to ensure part of the soil body to form an integration more closely with the foundation and to connectively move together with the foundation when the foundation is movably loaded by a horizontal ice force and so on. Therefore, the problems that formerly, as the soil surrounding the barrel foundation gets closer to the barrel foundation, the soil receives bigger disturbance and the softening degree and the liquefaction degree become more and more serious are eliminated; the disturbance brought by the barrel foundation can be more evenly and extensively distributed into the soil surrounding the barrel foundation; the softening degree of the soil body is reduced; the liquefaction of soil mass is eliminated; and thereby the stability of the foundation and the reliability of the anchorage in the submarine soil are guaranteed.

A process for the production of a frozen vegetable or part thereof, wherein said process comprises the steps: (i) subjecting a vegetable or part thereof to a firming treatment selected from: a) immersing the vegetable or part thereof in a solution of a calcium salt. b) heating the vegetable or part thereof to a temperature in the range 50 to 70° C., and c) a combination of a) and b); (ii) under-cooling to a core temperature of less than or equal to -5° C.; (iii) reducing the temperature to less than or equal to -18° C. The frozen vegetables, when thawed, possess a texture and appearance which closely resembles that of fresh vegetables.

The image forming apparatus of the present invention includes an image forming member that jets liquid droplets onto a recording medium and forms an image on a front face of the recording medium, a tension imparting member that induces tension of 100N/m to 1000N/m in the recording medium image-formed on the recording medium front face by the image forming member, and a drying member that dries the image formed on the front face of the recording medium when tension induced in the recording medium by the tension imparting member to a residual moisture level of 3 g/m² or less in the recording medium.

Packaging using Gas Permeable Non-Woven Fabric based Film extends the shelf life of various fresh fruits and vegetables and vase life of fresh cut flowers by changing the atmosphere in which these living products are stored and respires. The high oxygen and carbon dioxide permeability of the Gas Permeable Non-Woven Fabric based Film establishes an ideal atmosphere for the specific perishable item, and therefore extends its shelf life. The establishment of lower oxygen and carbon dioxide atmospheres inside packages using Gas Permeable Non-Woven Fabric based film, also leads to reduction in the respiration rate of the perishable items. The reduction in the respiration rate prevents loss of moisture, production of metabolic heat, and yellowing, browning, reduction in production levels of ethylene. Thus the created atmosphere is able to extend shelf life, maintain high quality and preserve nutrients of fresh produce items by naturally regulating respiration of said produce/flower.

The present invention discloses a preservation method for picking, storage, transportation and sales of high-value fruits and vegetables. The method is as follows: when fruits and vegetables reach a physiological maturity period, a pre-picking spraying-type 1-methylcyclopropene preservation agent is sprayed on trees, timely picking or delayed picking is conducted, after sorting, the fruits and vegetables are put into a microenvironmental controlled atmosphere preservation box, after fully pre-cooled in an origin place, the fruits and vegetables are put in a physiological and disease-double-controlling 1-methylcyclopropene preservation bag, and cover locking and storing are conducted. Storage, transportation and sales links have the following three modes: (1) a fresh sales mode: the fruitsand vegetables are directly transported to consumers in a cold chain manner and the fresh sales mode is suitable for e-commerce; (2) a storage mode: the fruits and vegetables are transported to cold storages of a storage and sales place for storage in a whole cold chain manner and the storage mode is suitable for fruit and vegetable storage and sales enterprises; and (3) a sales model: the fruitsand vegetables are divided into full box sales and single basket sales and the sales model is suitable for different consumer groups. The treatment method can delay picking time of the fruits and vegetables, delays occurrence of senescence and decay of the fruits and vegetables, and increases commerciality and sales prices of the fruits and vegetables in the storage, transportation and sales links.

The invention discloses a curing process of polar plate used for a lead-acid battery pack, which comprises two steps of curing and drying, and is characterized in that curing is carried out by employing high temperature, and high wet and compression. The curing process has the advantages that the step of curing is carried out with one step, the process is simplified, the curing time is shortened, the curing effect is increased, and free lead and moisture of the cured polar plate are less than 1% through detection.

Disclosed is a lead-free low softening point glass whose composition lies within the system, SnO—P₂O₅ and containing over 5 to 30 mol % of MnO. The addition of MnO allows the water resistance and coefficient of thermal expansion of the glass to be improved without spoiling its feature of a low softening point. The lead-free low softening point glass can be prepared through a simplified production process.

The invention provides an abrasion-resistant composite protective coating for a hard sealing surface of a ball valve and a preparation method of the abrasion-resistant composite protective coating, and belongs to the field of surface engineering. The invention provides the abrasion-resistant composite protective coating for the hard sealing surface of the ball valve, a Cr3C2-NiCr coating, a Cr->Cr/C/WC dual-mode transition layer and a WC/a-C nano multilayer film are sequentially prepared on the surface of a metal matrix. According to the abrasion-resistant composite protective coating, the abrasion-resistant composite protective coating has a lower friction coefficient, ultralow internal stress, high bearing capacity and excellent abrasion resistance, is suitable for being used as an abrasion-resistant protective material for the hard sealing surface of the ball valve, and can remarkably improve the abrasion resistance and prolong the service life, so that the purposes of reducing thecost and improving the safety and reliability are achieved.

The invention discloses a low-temperature brazing method for a graphite-copper composite structure commutator. The low-temperature brazing method includes the following machining steps: (1) preparing SnAgCuTi powder brazing filler metal containing the active element Ti, (2) placing the SnAgCuTi powder brazing filler metal on the surface of a graphite plate, heating the SnAgCuTi powder brazing filler metal and the graphite plate to be at the temperature ranging from 450 DEG C-900 DEG C under the vacuum or inert gas protection condition, keeping the temperature for 0 min-60 min, achieving metallization of the surface of the graphite plate, cooling the SnAgCuTi powder brazing filler metal and the graphite plate to be at the indoor temperature, and taking out the SnAgCuTi powder brazing filler metal and the graphite plate, and (3) assembling metallized graphite and a copper commutation blade, exerting the 0.2 MPa-1.2 MPa axial pressure, placing the assembly into a brazing device to heat the assembly to be at the temperature ranging from 240 DEG C to 450 DEG C, keeping the temperature for 0 min-60 min, and completing low-temperature brazing forming of the graphite-copper composite structure commutator. According to the low-temperature brazing method, the problems that in an existing brazing technology of the graphite-copper composite structure commutator, the combination strength between a metal plating layer and the graphite plate is low, and falling is prone to happening are solved, softening of the copper commutation blade is effectively relieved through the low brazing temperature, the performance of the graphite-copper composite structure commutator is improved, the service life of the graphite-copper composite structure commutator is prolonged, and the brazing method has the advantages of being simple, practical, environmentally friendly, efficient, easy to operate, stable in technology, low in cost and the like.