155results about How to "Guaranteed water resistance" patented technology

The invention provides putty powder used for walls in a house. The putty powder comprises the following ingredients: ground calcium carbonate, sodium-base bentonite, 1788 powder of polyving akohol, hydroxypropyl methyl cellulose and talcum powder, besides, white cement or/and calcium hydroxide powder is/are added therein as a reinforcing material, and also, sodium hexametaphosphate powder and/or tourmaline powder are/is added in the product. The putty powder has excellent scraping construction performance, long-acting mould-proof performance and excellent dense degree of the putty coating as well as the function of releasing negative ions for a long time, can effectively adsorb various harmful substances in the air and purify the air, and has excellent environment-friendly performance.

The invention discloses a preparation method for high-hardness waterborne polyurethane dispersion. An inorganic nano material and waterborne polyurethane are grafted through an in-situ polymerization method, so that the hybridization reaction of inorganic materials and the organic materials is realized and complementary advantages are realized. The preparation method comprises the following operation steps: adding polyisocyanate, macromolecule polyol, a catalyst, a chain extender and a silane coupling agent according to certain weight ratio in a flask for reacting to obtain a polyurethane prepolymer; after the reaction is ended, sequentially adding a neutralizer, inorganic nano material dispersion liquid and deionized water under the condition of low-temperature and high-speed stirring; finally, heating under the vacuum condition for removing the solvent to obtain the high-hardness waterborne polyurethane dispersion. Compared with the traditional inorganic and organic blending process, the preparation method has the characteristics that products prepared through the preparation method have the advantages of good stability, excellent water resistance, long-time aging resistance, excellent and high adhesion, high drying speed, high hardness, good fullness, higher light transmittance and the like, and are wide in application range.

The invention provides a biodegradable film and a manufacturing method thereof. The biodegradable film comprises an inner layer and an outer layer, and the inner layer and the outer layer are respectively composed of the following components by weight percentage: 20%-100% of PBAT, 0%-35% of PLA, 0%-30% of starch, 0%-30% of inorganic powder, 0%-50% of other biodegradable material and 0%-15% of a modification assistant; a middle layer is composed of the following components: 30%-75% of PVA, 0%-60% of PLA, 0%-60% of PBAT, 0%-30% of starch, 0%-30% of inorganic powder, 0%-50% of a biodegradable material and 10%-40% of a modification additive. On the premise of ensuring the water resistance of the biodegradable films, the PVA (polyvinyl alcohol) material is utilized to achieve the goals of increasing the sources of the biodegradable materials and lowering the cost of the biodegradable films.

The invention discloses a binder, which comprises the following component contents in percentage by weight: 20-85 percent of bentonite and 15-80 percent of cement. The application of the binder in a catalyst for removing nitric oxide in smoke gas comprises the following steps of: fully mixing the binder with catalyst powder for removing the nitric oxide in the smoke gas according to the mass ratio of 0.18:1-0.25:1; adding water content, and mixing into slurry; and uniformly coating on slide glass, and drying at 150-300 DEG C. The binder is low in cost and is safe without toxicity, and the application method of the binder in the catalyst for removing the nitric oxide in the smoke gas is simple, and the prepared flakes have better denitration performance, with certain intensity and water resistance ensured at the same time.

The invention discloses a PU automobile leather easy to clean and a preparation method thereof. The PU automobile leather easy to clean comprises a base cloth, a bonding layer, a middle layer, a surface layer, a first surface layer and a second surface layer which are arranged in sequence; the first surface layer comprises the following components of 5-95 parts of hydrophobic aliphatic self-matting polycarbonate polyurethane, 5-95 parts of hydrophobic aliphatic polyurethane gloss surface treatment agent, 0.5-8 parts of isocyanate cross-linking agent, 3-8 parts of silane coupling agent, 0.1-2 parts of leveling agent and 1.1-15 parts of other auxiliaries in parts by weight; the total amount of the hydrophobic aliphatic polyurethane gloss surface treatment agent and the hydrophobic aliphaticself-matting polycarbonate polyurethane is 100 parts; the second surface layer comprises the following components of 40-75 parts of side-chain fluorine-containing vinyl silicone resin, 2-25 parts of polysilazane, 3-20 parts of hydrogen containing silicone oil, 30-70 parts of organic solvents, 0.5-18 parts of adhesive agent, 0.001-1 parts of platinum catalyst, 0.5-10 parts of accelerator, 8-40 parts of packing and 0.1-2 parts of wear-resistant agent in parts by weight. The PU automobile leather easy to clean has the advantages that the PU automobile leather easy to clean is easy to clean, and meanwhile, the PU automobile leather easy to clean possesses excellent hydrolysis resistance, wear resistance and weather resistance.

The invention provides a composite foaming cement board used for an external thermal insulation system of an external wall and a production method of the composite foaming cement board. The composite foaming cement board is mainly made of the following materials in parts by weight: 220-170 parts of cement, 40-70 parts of coal ash, 0.2-0.5 parts of water repellent, 0.9-1.5 parts of high-efficiency water reducing agent, 0.4-0.7 parts of propyl benzene emulsion, 5-10 parts of calcium chloride, 4-8 parts of aluminum sulfate, 1.5-2.2 parts of pp fiber, 10-15 parts of foaming agent, 1.2-1.5 parts of nanometer modified calcium stearate, and 100-120 parts of water. The composite foaming cement board has high tensile strength and compressive strength, good in water resistance and excellent heat insulation performance and hardly cracks when used in external wall thermal insulation construction.

The invention discloses an acrylic emulsion of a novel transfer adhesive. The acrylic emulsion comprises the following raw materials: alkyl alcohol polyether, lauryl sodium sulfate, a pH regulator, ammonium persulfate, tert-butyl hydroperoxide, sodium hydrogen sulfite, ammonia water and isothiazolinone; inner-core monomers comprise styrene, methyl methacrylate, butyl acrylate, acrylic acid and N-hydroxymethyl acrylamide; and outer-shell monomers comprise styrene, methyl methacrylate, butyl acrylate, acrylic acid and N-hydroxymethyl acrylamide. The acrylic emulsion has the beneficial effect that the solid content is not less than 50%, and the characteristics such as adhesion, transfer and folding resistance are excellent; the acrylic emulsion can be widely applied to transferring to paper products from aluminum-coated layers on polymer base materials such as BOPP (biaxially-oriented Polypropylene) and PET (polyethylene terephthalate), is safe and environmentally friendly, low in VOC (volatile organic compounds) and capable of satisfying the industries with safety and sanitation requirements such as cigarette packaging.

The invention discloses a water soluble polyester slurry for sizing DTY polyester low elastic filaments and a preparation method thereof, and belongs to the technical field of water soluble polyester slurry. The invention aims to solve the problems that the solid contents of acrylic acid slurry can only reach 30% or so, and the bonding force between the acrylic acid slurry and hydrophobic polyester fibers is weak. The water soluble polyester slurry is characterized by being composed of recycled polyester, glycol accounting for 5 to 10 wt% of polyester, m-phthalic acid-5-sulfonate or derivatives thereof accounting for 10 to 20 wt% of polyester, m-phthalic acid accounting for 3 to 15 wt% of polyester, other dibasic alcohols accounting for 5 to 10 wt% of polyester, a catalyst accounting for 0.03 to 0.15 wt% of polyester, and polyoxyethylene and/or polytetrahydrofuran accounting for 0 to 5 wt% of polyester. The slurry is prepared through steps of alcoholysis, copolymerization, cooling, and grinding. The slurry has a high glass-transition temperature, excellent chemical stability, anti-hydrolysis performance, and thermal stability, thus is convenient for transportation and storage, also has strong flexibility and a large breaking elongation rate, and is mainly used to size polyester low elastic filaments (DTY).

The invention discloses a preparation method for an AKD (Alkyl Ketene Dimer) emulsion and a water-resistant treatment method for paper sheets. The preparation method comprises the following steps of firstly, gelatinizing cationic starch, melting AKD wax powder at the temperature of 70 DEG C, then, pouring the gelatinized starch into the melted AKD wax powder, adding a stabilizer into the melted AKD wax powder, turning on an emulsifying machine to carry out emulsification, carrying out homogenization treatment on the solution, and carrying out rapid cooling, thereby obtaining the AKD emulsion. According to the preparation method for the AKD emulsion, disclosed by the invention, on the premise of guaranteeing the water resistance of the AKD emulsion, no starch etherifying process is carried out, and the gelatinized starch is directly used for emulsifying AKD after the starch is gelatinized, so that the equipment and labor investment of AKD emulsion manufacturers can be reduced, the aging efficiency of the AKD emulsion is high, the degree of hydrolysis of the AKD is greatly lowered, the water resisting effect is effectively guaranteed, and the economic benefit is obvious.

The invention belongs to the technical field of film printing materials, and discloses a normal-temperature self-crosslinking type core-shell structure acrylate emulsion as well as preparation and application thereof. The preparation method comprises the steps: carrying out dehydrogenation condensation reaction on a vinyl polyether monomer and a hydrogen-containing silane coupling agent to obtain a modified macromonomer; heating a core-layer monomer emulsion composed of styrene, methacrylate and acrylate to 55-85 DEG C, and then adding an initiator solution to carry out polymerization reaction to obtain a core-layer emulsion; and dropwise adding a shell monomer emulsion composed of methacrylate, acrylic acid and a modified macromonomer and an initiator solution, and continuously carrying out a polymerization reaction to obtain the normal-temperature self-crosslinking type core-shell structure acrylate emulsion. According to the invention, the modified macromonomer with the specific structure is used as a shell polymerization monomer, so that the product can be endowed with a normal-temperature cross-linking characteristic, the adhesive force is enhanced, the wettability is improved, and the water resistance is good. The emulsioncan be used for preparing water-based ink and water-based latex paint.

A watertight umbilical and photoelectric hybrid cable disclosed by the present invention comprises a cable core and an enhancing layer lapping the cable core, and the cable core comprises an optical fiber, a stainless steel loose tube, the low-voltage watertight electric wires, the high-voltage watertight electric wires and an inner protection layer. The optical fiber is installed in the stainlesssteel loose tube, the multiple strands of low-voltage watertight electric wires are twisted on the stainless steel loose tube, and the inner protection layer wraps the low-voltage watertight electricwires; the high-voltage watertight electric wires are twisted on the inner protection layer, the enhancing layer wraps the watertight electric wires, the curing type water-blocking sealants are filled between the enhancing layer and the high-voltage watertight electric wires and between the stainless steel loose tube and the low-voltage watertight electric wires respectively, and an outer protection layer is arranged on the enhancing layer. The watertight umbilical and photoelectric hybrid cable of the present invention effectively solves the problems that the signal transmission distance andthe communication capacity are limited, the function is single, during the large tension repeated contraction and release, the signal transmission is not stable, and the service life is reduced, andguarantees the overall mechanical performance and the transverse water-pressure resistant capability.