145results about How to "Good anti-sticking effect" patented technology

The invention relates to the technical field of materials for synthetic leather, in particular to weak solvent aliphatic polyurethane resin for synthetic leather and a preparation method thereof. The weak solvent aliphatic polyurethane resin for synthetic leather is prepared from the following components by weight percent: 2-30 percent of aliphatic diisocyanate compound, 5-40 percent of polyester or polyether polyalcohol compound, 0-10 percent of micromolecule polyol chain extender, 0.1-13 percent of micromolecule polyamine chain extender, 0.01-1.0 percent of catalyst, 0.05-5.0 percent of assistant and 45-85 percent of organic mild solvent. The invention also discloses the preparation method of the weak solvent aliphatic polyurethane resin for synthetic leather. By adopting the technical scheme, the polyurethane resin with different solid contents, different viscosities and different modulus can by synthesized, the requirement of the synthetic leather is satisfied, and the synthetic leather product with high temperature resistance, cold resistance, anti-sticking performance and better external tensility of pigment can be prepared.

An air gap is formed between a first film having a first electrode film and a second film having a second electrode film. The first film has a stopper protruding toward the second film, and a recess communicating with the air gap is provided in the center of the stopper.

The invention discloses high-strength directly aluminizing water-based base coat and a preparation method and application of the high-strength directly aluminizing water-based base coat. The directly aluminizing water-based base coat comprises the following components in parts by mass: 50-80 parts of water-based resin, 6-16 parts of cosolvents, 0.1-1 part of flatting agents, 0.05-0.20 part of antifoaming agents, 0.05-0.5 part of slipping agents, 1-6 parts of hardening agents, 0.1-0.3 part of pH regulator, 0.2-2 parts of thickening agents, 0-2 parts of crosslinking agents and 6.2-36.2 parts of water. With good closure, the direct aluminizing water-based base coat disclosed by the invention guarantees the filling of micropores in the paper surface as well as the separation of water vapor; due to the characteristic of flexibility, the bending resistance of paper is realized; the viscosity resistance ensures that the film rolls are not bonded with each other after base coating on the aluminizing body paper; moreover, by adjusting the leveling property of the selected resin system and the coating, the base coat has high aluminizing metal texture.

The invention discloses non-yellowing polyurethane resin for mirror synthetic leather and a preparation method of polyurethane resin. The non-yellowing polyurethane resin is prepared from following raw materials: polyol, a chain extender, diisocyanate, a solvent and an antioxidant, wherein polyol is a mixture of polytetramethylene ether glycol having a number average molecular weight of 2000, polytetramethylene ether glycol having a number average molecular weight of 3000, polydiol adipate having a number average molecular weight of 1000-3000; the chain extender is a mixture of C2-C6 aliphatic diol, piperazine and alicyclic diprimary amine; diisocyanate is aliphatic diisocyanate; the solvent comprises a solvent A, a solvent B and a solvent C, the solvent A is at least one selected from dimethylformamide and dimethylacetamide, the solvent B is at least one selected from toluene, butanone and ethyl acetate and the solvent C is at least one selected from isopropanol or isobutanol. By virtue of the non-yellowing polyurethane resin, the risk of generation of insoluble particulates and topical gel in the system is reduced and meanwhile, the non-yellowing polyurethane resin for synthetic leather has the characteristics of excellent low-temperature folding resistance and good anti-sticking performance.

The invention relates to the technical field of leather processing, in particular to a preparing method for pearlescent leather. The method includes the processes of material selecting, foaming, plate pressing, ground color applying, pearlescent pigment spraying, manual color smearing, color fixing and drying. Traditional second-layer pig skin leather can only be applied to a lining and a rear cover of a material or be sold out as a waste material to be used as reclaimed leather. An inventor creatively starts to use second-layer pig skin, the feature of the second-layer pig skin is improved, the technology of foaming positive ion foaming resin is used for shielding rough pores of the second-layer pig skin, then plate pressing, ground color applying, pearlescent pigment spraying and manual color smearing are conducted, finally, the resin is used for color fixing, the obtained leather has the smoothness and the glossiness of the top-layer pig skin, pearlescent paint on a sprayed surface enables the product to become beautiful and colorful and have a very strong pearlescent three-dimensional effect, the added value of the leather is greatly improved, the prepared pearlescent leather can be used as the face layer of the leather, the application range is wide, and the economic benefits are high.

The invention relates to an organic silicon releasing coating mixture, a releasing coating base material and a method for producing the releasing coating base material. The organic silicon releasing coating mixture comprises: (A) a mixture of poly di-organic-group siloxane (a1) and poly di-organic-group siloxane (a2) with a proportion of 10:90 to 70:30, (B) organic hydrogen polysiloxane of which each molecule has more than two hydrogen atoms connected with silicon on the average, (C) a catalyst in a hydrosilylation reaction and (D) an inhibitor with 0.001-2.0 parts by weight in the hydrosilylation reaction, wherein each molecule of the poly di-organic-group siloxane (a1) has at least two alkenyls on the average, and the viscosity of (a1) at the temperature of 25 DEG C is 100-500mPas; eachmolecule of the poly di-organic-group siloxane (a2) has at least two alkenyls on the average, and the viscosity of (a2) at the temperature of 25 DEG C is 5,000mPas; and the organic hydrogen polysiloxane has a content large enough to ensure that molar ratio of the hydrogen atoms connected with the silicon in the organic hydrogen polysiloxane and the alkenyls in the component (A) ranges from 0.8:1 to 5:1.

The invention discloses a color polytetrafluoroethylene release film and a preparation method thereof. The color polytetrafluoroethylene release film is prepared through the following steps: blending polytetrafluoroethylene resin and a pigment according to a weight ratio of 100:1-10, and carrying out treatments of pre-forming, sintering, turning and rolling to prepare the color polytetrafluoroethylene release film. According to the present invention, the color polytetrafluoroethylene release film of the present invention has excellent anti-sticking property and surface smoothness of the polytetrafluoroethylene, and can provide light and stable release force during stripping; the color polytetrafluoroethylene release film of the present invention further has characteristics of weathering resistance, temperature resistance, chemical stability, and other excellent properties of the polytetrafluoroethylene, and has bright color, such that the application range is wide; the preparation method is simple, and is convenient to operate.

The invention discloses a fusible polytetrafluoroethylene tubular film and the manufacturing method thereof. The tubular film is a seamless tubular piece consisting of a bottom layer and a surface layer, wherein the two layers are made mainly from fusible polytetrafluoroethylene, the bottom layer has a coating containing water-soluble inorganic salts that are dissolved out under ultrasonic water washing to form the micropores, and the surface layer is smooth and compact and has anti-sticking effect. The production method includes the following steps: coating the bottom and the surface layers respectively on the surface of an aluminum alloy tube, baking at a high temperature to form film, removing from the surface of the aluminum alloy tube, subjecting to ultrasonic washing to obtain the PFA tubular film with porous inner surface and smooth and compact outer surface. The outer surface of the product is smooth and compact and excellent in anti-fouling function. The inner surface of the product doesn't need subsequent treatment and has good effect of adhersion with silicone rubber after coating. The fusible polytetrafluoroethylene tubular film is particularly suitable for the production of silicone rubber hot rollers used in duplicators and laser printers.

The invention provides silk fibroin based antibacterial nano-fibers. The silk fibroin based antibacterial nano-fibers are prepared from the following components in parts by weight: 100 to 150 parts ofsilk fibroin, 4 to 8 parts of titanium dioxide, 20 to 30 parts of chitosan, 10 to 15 parts of nano copper oxide and 10 to 15 parts of polyethylene oxide. The invention further provides a preparationmethod of the silk fibroin based antibacterial nano-fibers; the silk fibroin based antibacterial nano-fibers, prepared by the preparation method, have good biocompatibility, anti-sticking performance,good antibacterial effect and excellent color fixing effect.

The current invention relates to a composition and a method for treating impurities in a circulating water system. The circulating water system impurities may be oversprayed paint in paint spray booth applications. The composition includes an aqueous solution of a cationized starch, a polybasic aluminum salt such as aluminum chlorohydrate or polyaluminum chloride and a solution of a medium to high MW aqueous flocculant. The composition is particularly useful when added to recirculating scrubber water in paint spray booths for effectively treating both water based and solvent based paints.

The invention discloses a low-temperature curing polyether sulfone coating composition and a preparation method thereof, as well as a coating process, and belongs to the technical field of coatings. The low-temperature polyether sulfone coating composition is prepared from polyether sulfone resin, epoxy resin, polytetrafluoroethylene, a curing agent and a diluent. The preparation process comprises the following steps: dissolving the polyether sulfone resin in a composite solvent prepared from dimethylacetamide, methylbenzene and butanone at the stirring speed of 3,200 to 3,800 r/min, then adding the polytetrafluoroethylene and the epoxy resin in sequence, grinding the materials in a grinding machine for 2 to 6 hours, adding the curing agent before spraying, stirring for 0.2 to 0.5 hour for curing, spraying a sandblast metal base material with the cured coating through an air spraying gun and an air compressor, and drying at 150 to 170 DEG C for 2 to 6 hours. According to the preparation method disclosed by the invention, low-temperature curing of the polyether sulfone coating is realized; a prepared coating layer is high in adhesion force, impact resistance, wear resistance, hydrophobicity, corrosion resistance and the like; the preparation and coating process is easy to operate; production equipment is easy to realize and the application range is wide.

The invention relates to a method for producing a biaxially oriented multilayer co-extruded polyolefin shrink film by a flat film process, which comprises the following steps: adding 95-97% of ternary-polymerized polypropylene (PP) and 3-5% of silicon dioxide using PP copolymer as a carrier into two surfaces of the co-extruded polyolefin shrink film, adding C6 linear low-density polyethylene (C6-LLDPE) into a core layer, sufficiently fusing and plastifying in an extruder at 220-250 DEG C, extruding by a hanger-type die, processing a thick piece into a film and then longitudinally/horizontally stretching, and then hauling and coiling. The method provided by the invention has advantages of high annual productivity and stable product shrinkage rate.

The invention relates to the technical field of plastic assistants, and concretely relates to a novel fluorine-containing siloxane fire retardant, and a preparation method and an application thereof. The preparation method comprises the following steps: 1, uniformly mixing organosiloxane monomers, adding the obtained monomer mixture into a catalyst and emulsifier dissolved aqueous solution, and carrying out a reaction to obtain an organopolysiloxane emulsion; 2, adjusting the pH value of the organopolysiloxane emulsion by using an alkali liquid, adding a fluorine-containing styrene monomer and a copolymerization, adding an initiator, a crosslinking agent and a chain transfer agent, and carrying out a reaction to obtain an organosiloxane grafted fluorine-containing styrene polymer emulsion; and 3, diluting the polymer emulsion, adding a de-emulsifier to carry out demulsification, centrifuging the de-emulsified emulsion, and carrying out drying and crushing to prepare the novel fluorine-containing siloxane fire retardant. The novel fluorine-containing siloxane fire retardant prepared in the invention has excellent anti-dripping effect and fire-retardant property without affecting the mechanical properties of a high-molecular material polymer, and also can improve the mechanical properties and the heat resistance of matrix resin.

The invention discloses an environment-friendly multifunctional composite negative-pressure drain wound-protection sponge and a preparation method thereof. The sponge comprises the following components by mass percentage: 5-30% of polyvinyl alcohol, 10-30% of an aqueous polyurethane performed polymer, 0.1-1% of a catalyst, 0.02-0.5% of a surfactant, 5-10% of medical Vaseline, 5-10% of medical lightweight paraffin oil, 5-10% of sodium hyaluronate, and the balance of purifying water. The wound-protection sponge combines foaming technology general characteristics of PVA and PU, which organically combines the excellent performances of PVA and PU, by adding the sodium hyaluronate, sponge water absorption, water retention performance, water absorption rate of the sponge are increased, a supercritical CO2 foaming mode is used, and the chemical residue of the sponge is reduced, the sponge water absorption is increased by 22 times and more, the water retention performance is increased by 7-10 days, the water absorption rate of the sponge is increased by at least one time, which can reach 10-12 g/min.g, and the sponge has good antistick effect.

Belonging to the technical field of preparation of asphalt isolation agents, the invention relates to a preparation method of an anti-sticking asphalt isolation agent. The method includes: firstly utilizing sodium dodecyl benzene sulfonate and span 80 to modify talcum powder under an oil bath condition to obtain modified talcum powder, then using waste engine oil as the raw material, conducting impurity removal treatment, then performing mixing with activated clay and a sodium carbonate solution, then conducting deacidification to obtain pretreated waste engine oil, then compounding span 60, Tween 60 and other emulsifiers to obtain a compound emulsifier, and finally mixing the compound emulsifier with the pretreated waste engine oil, illegal cooking oil, modified talcum powder and other substances, thus obtaining the anti-sticking asphalt isolation agent. The anti-sticking asphalt isolation agent prepared by the method provided by the invention has good stability performance, is free of oil-water separation phenomenon in 72h, and has good isolation and anti-sticking effects, when a road roller works for 1.5-2.0h, asphalt adhesion starts to appear on tire surfaces.

The invention discloses a polyester release membrane for an optical membrane, comprising a polyester thin membrane and non-adhesive separator layer applied to at least one lateral surface of the polyester thin membrane.The non-adhesive separator layer is made by mixing and baking the following components according to parts by weight: trifluoroethyl methacrylate, vinytrimethoxysilane, isooctyl methacrylate, long-chained alkane, glycol methyl ether, a photo-condensing initiator, an ultraviolet absorbent, acrylate carbamate, octadecanol methacrylate, and 2,4'-toluene diisocyanate.The polyester release membrane requires no expensive organosilicon light diffuser to be added, and the release membrane with light diffusing capacity can be made by adding the acrylate carbamate, the photo-condensing initiator and the ultraviolet absorbent.

The invention relates to a low-friction coefficient anti-bonding master batch special for a metallized base film and a preparation method thereof. The low-friction coefficient anti-bonding master batch mainly comprises, by weight, 90-95 parts of polypropylene resin and 5-10 parts of polymethylsesquisiloxane-polyphenylsilsesquioxane. The polymethylsesquisiloxane-polyphenylsilsesquioxane is a ladder polymer with R3SiO terminated. The molecular formula of the polymethylsesquisiloxane-polyphenylsilsesquioxane is [CH3SiO1.5]n-[PhSiO1.5]m, wherein n is 5-8 and m is 2-5. According to the preparation method, an anti-sticking agent is added by means of side feeding through precision electronic weight loss scales, and pelleting is performed after melt blending by means of the special double-screw process. By the adoption of the method, the problem that no slipping agent (master batch) can be added into the metallized film and thus the friction coefficient is high and the problem that the low friction coefficient is required under the condition that no migration slipping agent can be added into an aluminum laminated film are effectively solved. The friction coefficient of the obtained metallized base film is lowered to 0.4 or below from 0.8 or above, the slipping property is good, no migration happens, and the product surface is not greasy, high in glossiness, resistant to abrasion, lasting and effective.

The invention discloses a high-temperature-resistant composite release film, which comprises a release film layer, an adhesive layer and a high-temperature-resistant resin film layer, wherein the release film layer is obtained by co-extrusion process of two thermoplastic resin materials; the adhesive layer is formed by coating one surface of the release film layer with an adhesive; and the high-temperature-resistant resin film layer is glued on the adhesive layer. The three-layer high-temperature-resistant composite release film has a compact structure and is easy to peel off. On the basis of not influencing characteristics of rubber surface, release force is low. A fluorine-containing material is selected for the high-temperature-resistant resin film layer. At the high temperature of 200 DEG C, the high-temperature-resistant resin film layer can never be decomposed or react with the release layer or the adhesive layer. The release film has excellent anti-sticking and isolation effects, and has dimensional stability at high temperature. The release layer adopts an organosilicon elastomer adhesive and the thickness is controlled. Then, there is no residue on the release layer.

The invention relates to a leather care solution and a preparation method thereof. The leather care solution comprises the following components in parts by mass: 2 to 4 parts of nanoscale water-based wax emulsion, 1 to 3 parts of nano silicon dioxide emulsion, 2.5 to 4 parts of olive oil, 3 to 4 parts of an emulgator, 10 to 15 parts of a seaweed extract, 2 to 4 parts of an aloe extract, 3 to 5 parts of high alcohols and 64.9 to 74.4 parts of deionized water, wherein the solid content of the nanoscale water-based wax emulsion is 20 to 25 wt.%, and the solid content of the nano silicon dioxide emulsion is 20 to 25 wt.%. The leather care solution can effectively moisten and soften leather, prevents the ageing of the leather, and increases the wear-resisting property and the gloss of the leather, thus prolonging the service life of the leather.

The invention discloses an uncured rubber asphalt waterproof coating, a preparation method thereof and a waterproof reflecting film. The uncured rubber asphalt waterproof coating comprises the following raw materials in parts by mass: 30-70 parts of petroleum asphalt, 3-10 parts of a tackifier, 10-20 parts of a softening agent, 10-15 parts of rubber powder, 0.5-2 parts of an anionic dispersant, 10-20 parts of a thickening agent and 0.1-2 parts of a catalyst. The waterproof reflecting film is prepared from the coating. The petroleum asphalt is used as the main material of the uncured rubber asphalt waterproof coating, and is added with other additives which are in cross-linking reaction with the petroleum asphalt, thus, the coating has high chemical stability, has certain creep property, seals cracks and capillary pores of a base layer, can adapt to a complicated construction operation surface, and has good weather fastness, the characters of sticky rubber are always maintained, the capillary pores and the cracks of the base layer can be sealed well, the problems that cracking stress of the base layer is transmitted to a waterproof layer, thus, the waterproof layer is broken and isfatigue under flexing or is aged ahead of time due to the fact that the waterproof layer is in a high-stress state are solved, and the construction difficulty is simplified.