552 results about "Uv absorber" patented technology

The invention discloses a high-performance anti-interference low-voltage cable, which relates to the technical field of power transmission equipment, and is technically characterized by comprising a conductor core, an insulating layer, a shielding layer, a buffer layer and an outer sheath which are sequentially and coaxially arranged from inside to outside, the conductor core is made of a plurality of strands of tinned copper wires through a double stranding process of bunch stranding and compound stranding; the insulating layer coats the outer side of the conductor core; the shielding layer is of a double-layer structure and comprises an inner-layer aluminum-plastic composite belt and an outer-layer tinned copper wire braid layer, and an aluminum layer of the aluminum-plastic composite belt faces the inner side and is in equipotential connection with the conductor core. A layer of conductive carbon fiber cloth is wrapped on the outer side of the braid layer; the buffer layer is filled between the shielding layer and the outer sheath, and a plurality of aramid fiber reinforcing ribs are uniformly embedded in the buffer layer along the axial direction of the cable; the thickness of the outer sheath is made of a weather-resistant polyvinyl chloride material added with an ultraviolet light absorber and an anti-aging agent, and the inner surface of the outer sheath is provided with an anti-skid groove. And a nano montmorillonite filler is uniformly dispersed in the outer sheath.

Provided is a liquid crystalline polyester fiber capable of achieving improved weatherability without kneading a UV absorber into the fiber or attaching a weatherable UV absorber after fiber spinning. The liquid crystalline polyester is a fiber that consists essentially only of a liquid crystalline polyester, in which the amount of UV absorber used is 5 mass % or less, and the strength retention in the weather fastness test with xenon arc lamp light in accordance with JIS L 0891 is 60% or more.

The invention discloses a photovoltaic cable sheath material with ultraviolet aging resistance and long service life. Comprising the following components in parts by weight: 100 to 120 parts of high-density polyethylene, 0.3 to 0.5 part of a benzotriazole ultraviolet light absorber, 0.5 to 0.8 part of a hindered amine light stabilizer, 0.2 to 0.5 part of an antioxidant, 3 to 5 parts of salicylate intercalated magnesium aluminum hydrotalcite, 0.02 to 0.05 part of cerium acetylacetonate, 2 to 4 parts of rutile type nano titanium dioxide, 3 to 5 parts of a compatilizer and 0.5 to 1 part of a dispersant. The photovoltaic cable is prepared from the anti-ultraviolet aging long-life photovoltaic cable sheath material, an insulating layer material and a conductor, so that the obtained photovoltaic cable sheath material and the photovoltaic cable have excellent anti-ultraviolet capability and thermal aging resistance, and have relatively long service life.

The invention relates to a cable sheath material, and particularly discloses a weather-proof low-smoke halogen-free flame-retardant polyolefin cable sheath material and a preparation method thereof. The cable sheath material is prepared from 30 to 45 parts of low-density polyethylene, 10 to 30 parts of high-impact homo-polypropylene, 15 to 30 parts of graft modified flexibilizer, 30 to 50 parts of main flame retardant, 1 to 5 parts of coupling agent, 10 to 30 parts of phosphorus-nitrogen synergistic flame retardant, 4 to 10 parts of efficient smoke suppressant, 0.2 to 0.8 part of hindered phenol main antioxidant, 0.4 to 1.2 parts of thioester auxiliary antioxidant, 0.4 to 1.0 part of hindered amine light stabilizer, 0.5 to 1.5 parts of ultraviolet light absorber and 2.5 to 2.5 parts of weather resistance enhancer. 5.0 parts of a lubricant, 0.5 to 2.0 parts of a lubricant, and 0.1 to 0.8 part of an anti-copper agent. The mechanical property, the electrical insulation property and the weather resistance of the sheath material are effectively improved, an efficient synergistic flame retardant effect can be obtained, the flame retardant property is excellent, and a finished product can obtain excellent weather resistance, low-smoke zero-halogen property, flame retardant property, mechanical property, electrical insulation property and the like.

The present application relates to thermal insulation coating technical field, specifically to a kind of low VOCs ultraviolet resistant thermal insulation coating composition and its performance testing device, consisting of the following mass parts components: water-based acrylic resin 30-45 parts, nitrogen-doped graphene 1-3 parts, nano composite powder 2-5 parts, low water absorption and expansion glass microsphere 8-12 parts, silane coupling agent modified sepiolite 5-10 parts, silane coupling agent KH560 0.5-1.5 parts, ultraviolet absorber UV-9 0.3-0.8 parts, hydroxyethyl cellulose thickening agent 0.2-0.5 parts;Composition meets the following conditions: (1) VOCs content≤50g / L;(2) ultraviolet absorption rate≥95%;The present application realizes the purpose that VOCs content is far lower than traditional solvent type coating through the synergistic effect of water-based acrylic resin system and low water absorption and expansion glass microsphere, while nitrogen-doped graphene and nano ITO-SiO2 Composite powder form ultraviolet-infrared dual-effect shielding layer, ultraviolet absorption rate, infrared reflectivity greatly improve, solve the problem that traditional anti-UV coating function is single, VOCs is overproof.

The invention relates to the technical field of PVB heat-insulating films, in particular to a PVB heat-insulating film based on indium tin oxide and bronze cesium tungsten compounding and a preparation method thereof.The PVB heat-insulating film is prepared from, by weight, 80-120 parts of PVB resin, 20-50 parts of oily plasticizer, 0.1-2.0 parts of silane coupling agent, 0.1-1.0 part of antioxidant, 0.1-1.0 part of ultraviolet light absorber, 1-5 parts of polyethylene glycol derivative and 1-5 parts of compound dispersion slurry, the weight ratio of the indium tin oxide powder to the bronze cesium tungsten powder in the compound dispersed slurry is (5: 5)-(7: 3). According to the PVB heat-insulating film based on indium tin oxide and cesium tungsten bronze compounding and the preparation method, the prepared PVB heat-insulating film has high visible light transmittance and excellent near-infrared light rejection rate, meanwhile, the Faraday cage effect can be effectively avoided, and the signal shielding problem is avoided.

The invention belongs to the technical field of automobile paint surface protective films, and particularly relates to an environment-friendly heat-insulating automobile paint surface protective film and a preparation method thereof. The environment-friendly heat-insulating automobile paint surface protective film comprises a protective film, a self-cleaning coating, a first TPU base material, a heat-insulating coating, a second TPU base material, a pressure-sensitive adhesive layer and a release film from top to bottom, the heat-insulating coating comprises the following raw materials in parts by mass: 100 parts of waterborne polyurethane resin emulsion, 15-25 parts of a fatty acid ester modified heat-insulating compound, 1-2 parts of an ultraviolet light absorber and 5-8 parts of an auxiliary agent; the heat insulation compound comprises glass fiber powder, hollow glass beads and nano rare earth oxide; the environment-friendly heat-insulating automobile paint surface protective film provided by the invention has the advantages of high light transmittance, good heat-insulating property, good ultraviolet resistance, good ductility and environment friendliness.

The invention discloses yellowing-resistant light-cured organic silicon resin and a preparation method thereof, and belongs to the technical field of light-cured resin. The resin is prepared from the following raw materials in parts by weight: 80 to 100 parts of vinyl-terminated polysiloxane, 15 to 25 parts of trimethylolpropane tri (3-mercaptopropionate), 1 to 3 parts of yellowing-resistant aid, 2 to 4 parts of photoinitiator and 0.5 to 1 part of flatting agent. When the resin is prepared, the raw materials are uniformly mixed under a dark condition, and the resin is obtained after vacuum defoaming. Wherein the yellowing-resistant auxiliary agent is a benzotriazole ultraviolet light absorber and is synthesized through a multi-step reaction, the structure simultaneously contains a benzotriazole ring and anthryl, and the benzotriazole ring and the anthryl have a synergistic effect so that ultraviolet rays can be efficiently absorbed and yellowing can be inhibited. The obtained resin has excellent yellowing resistance and high curing speed, and is suitable for the fields of coatings, printing ink, adhesives, electronic packaging and the like.

The invention provides a low-warpage PC composite material as well as a preparation method and application thereof, and relates to the technical field of high polymer materials. The low-warpage PC composite material is prepared from the following raw materials in parts by mass: 45 to 55 parts of PC resin, 15 to 20 parts of modified glass fiber, 8 to 12 parts of filler, 0.8 to 1.2 parts of a core-shell type crystal nucleation warpage inhibitor, 5 to 8 parts of a toughening agent, 0.2 to 0.4 part of an antioxidant, 0.3 to 0.5 part of a lubricating agent and 0.2 to 0.3 part of an ultraviolet light absorber. The PC composite material provided by the invention has low warpage, high rigidity and high fluidity, and can be directly subjected to injection molding to obtain the thin-wall air deflector.

The invention relates to the technical field of functional materials for laminated glass, in particular to a high-damping intermediate film and a preparation method thereof. The high-damping intermediate film comprises the following components in parts by weight: 100 parts of PVB (Polyvinyl Butyral) resin, 5-25 parts of TPU (Thermoplastic Polyurethane) resin, 30-40 parts of plasticizer, 5-15 parts of compatilizer, 0.1-1 part of antioxidant and 0.1-1 part of ultraviolet light absorber. The compatilizer is a polymer containing an epoxy functional group. According to the invention, the TPU resin with high damping property is introduced, and the compatilizer is utilized to enable the TPU resin to form a nanoscale dispersed phase in a PVB matrix, so that an efficient damping dissipation structure is constructed, and the damping dissipation capability of the material to sound energy (especially low and medium frequency noise) is remarkably enhanced. Therefore, the prepared intermediate film has a higher loss factor, the weighted sound reduction index of the intermediate film reaches 38dB or above, the traffic noise spectrum correction is-3dB or below, and meanwhile, excellent optical transparency and mechanical properties are kept.

The invention provides a high-performance polypropylene plastic bucket material and a preparation method thereof, and belongs to the field of high-performance polypropylene plastic. The high-performance polypropylene plastic bucket material is prepared from the following raw materials in parts by weight: 100 parts of polypropylene resin, 8 to 15 parts of hydrogenated styrene-butadiene-styrene block copolymer, 3 to 8 parts of modified nano silicon dioxide, 2 to 5 parts of epoxy functionalized polypropylene, 3 to 10 parts of ethylene-vinyl acetate copolymer, 0.2 to 0.5 part of beta crystal form nucleating agent and 1.5 to 4 parts of hyperbranched dynamic cross-linking agent, the composition comprises the following components in parts by weight: 1-4 parts of maleic anhydride grafted polypropylene, 0.3-0.6 part of an antioxidant, 0.2-0.4 part of a hindered amine light stabilizer and 0.1-0.3 part of an ultraviolet light absorber. By constructing a multi-component and multi-network synergistically enhanced polypropylene composite material system, the problem that rigidity, toughness, long-term stability and weather resistance are difficult to consider at the same time is essentially and synergistically solved.

The invention discloses an adhesive tape for battery insulation and a compounding process thereof, and relates to the technical field of battery insulation. The adhesive tape for battery insulation is prepared by taking a polyimide film as a base film and coating an adhesive, the adhesive is prepared from the following raw materials in parts by weight: 70 to 90 parts of polyacrylate emulsion, 6 to 12 parts of isocyanate curing agent, 4 to 8 parts of terpene resin, 10 to 18 parts of modified aluminum hydroxide, 5 to 9 parts of modified aluminum oxide, 7 to 14 parts of nano montmorillonite, 0.8 to 2.5 parts of antioxidant 168, 0.5 to 2 parts of ultraviolet light absorber UV-327, 2.5 to 5 parts of silane coupling agent KH-570, 31 to 48 parts of propylene glycol methyl ether acetate and 3 to 6 parts of glycerol. The adhesive tape for battery insulation is matched with modified aluminum hydroxide and aluminum oxide to synergistically improve the performance. The product has excellent insulativity, heat resistance and stability, the processing process is controllable, and strict use requirements in the field of batteries are met.

The present invention relates to precursors of dibenzoylmethane compounds having an amide group on one of the rings, and corresponding photoconversion compounds, pharmaceutically or cosmetically acceptable salts thereof, or stereoisomers or mixtures thereof, for use in protecting human or animal living organisms or materials from ultraviolet light. The present invention also relates to the preparation processes thereof, as well as cosmetic compositions, pharmaceutical compositions or personal care compositions thereof.

The application discloses a kind of ultraviolet absorber with triazine ring as main structure and its preparation method and its application in aramid fiber, the ultraviolet absorber has the following structural formula: Wherein, R1, R2, R3, R4 It is the group containing phenyl or substituted phenyl, R5 It is piperidyl, piperazyl, pyrrolidinyl and one of the following structures:This ultraviolet absorber has good absorption to UVA-UVB band ultraviolet, especially in 290~320 nm range has good ultraviolet absorption, adding the ultraviolet absorber in aramid fiber can significantly improve its weather resistance and service life, keep mechanical property, delay ultraviolet degradation, reduce the direct damage of fiber.

This application relates to a UV-3 ultraviolet absorber and its preparation method, belonging to the field of chemical synthesis technology. The preparation method employs a one-pot process, in which benzocaine reacts with triethyl orthoformate in xylene solvent. This step utilizes reactive distillation coupling control, continuously removing the generated alcohol distillate through a distillation separation device to promote reaction equilibrium shift, obtaining a xylene solution of the intermediate NET. Subsequently, the solution is heated to a reaction temperature of 135–145°C, and benzyl chloride is added dropwise for N-alkylation, while a tail gas absorption device absorbs byproduct gases. The reaction slurry is then cooled for crystallization, solid-liquid separation, and drying to obtain the UV-3 product. This invention simplifies the production process through a one-pot process, avoids the use of toxic DMF solvent, and solves the technical problem of raw material residues leading to subsequent side reactions in the one-pot process through reactive distillation coupling control, resulting in a final product with high purity and high yield.

The present invention relates to an optical laminate and an image display device comprising same, the optical laminate comprising: a thin film glass; a first hard coating layer formed on one surface or both surfaces of the thin film glass; and a second hard coating layer formed on the first hard coating layer, wherein the first hard coating layer includes a thermosetting resin and a UV absorber, and the second hard coating layer includes a light-transmitting resin, and can provide the optical laminate and the image display device comprising same, the first hard coating layer having sufficient impact resistance, including the UV absorber so as to able to block 95% or more of ultraviolet rays with a wavelength of 300-380 nm, having excellent spectral transmittance of 80% or higher in the 440 nm wavelength region, and having excellent hardness, scratch resistance, adhesiveness and flexibility.

The application discloses waterproof and decorative integrated paint and a preparation method thereof. The paint comprises silicone emulsion, acrylic emulsion, pigment, heavy calcium carbonate, sheeted kaolin, silicon powder, modified graphene oxide, nano silicon dioxide, ethylene glycol, ultraviolet absorber, light stabilizer, heat stabilizer, dispersant, hydrophobic agent, film forming aid, defoaming agent, leveling agent, thickening agent, preservative and water. The acrylic emulsion is obtained by polymerization reaction of methyl methacrylate, cyclohexyl methacrylate, butyl acrylate, lauryl methacrylate, hydroxyethyl methacrylate, glycidyl methacrylate, acrylic acid and KH-570. The modified graphene oxide is obtained by modification of graphene oxide by beta-cyclodextrin and vinyltrimethoxysilane. The waterproof and decorative integrated paint provided by the application has the functions of waterproofing and decoration, and has excellent weather resistance, stain resistance and bonding strength.

This invention relates to a polyurethane-modified silicone protective material for the outer wall of wind turbine towers, and discloses a method for preparing the same material. The material is prepared by mixing acrylate-hedged phenol-modified trimethyl silicone oil, isocyanate-modified polyether polyol polyurethane, ultrafine silica, nano-alumina, short-fiber glass, triethylamine, benzoyl peroxide, dioctyl phthalate (DOP), phthalocyanine UV absorbers, dibutyltin diethylene (DDBT), and imidazole antifungal agents in a specific weight ratio. This material exhibits excellent weather resistance, mechanical strength, heat resistance, UV resistance, and antifungal properties, making it particularly suitable for the protection of wind turbine towers. The preparation method ensures the stability and consistency of the material's performance by precisely controlling the proportions of each component and the curing conditions. This material effectively improves the UV resistance, corrosion resistance, weather resistance, and overall durability of wind turbine towers, extending their service life and reducing maintenance costs. This invention provides a high-performance protective material for the outer wall of wind turbine towers, which has significant engineering application value. Especially in environments with long-term high humidity, low temperature, and strong ultraviolet radiation, it can significantly improve the stability and service life of the tower. This polyurethane-modified silicone protective material exhibits excellent protective performance in demanding application environments such as wind turbine towers, and has broad market application prospects.

The invention provides organic silicon modified polyurethane resin as well as a preparation method and application thereof, and relates to the technical field of binders. Specifically, silane modified polyurethane resin with an ester group side chain is prepared on the basis of polyether polyol, hydrogen-containing silicone oil, polyisocyanate, an acrylate compound and an isocyanate silane coupling agent, and the silane modified polyurethane resin with the ester group side chain is used as a resin matrix; the organic silicon modified polyurethane transparent sealant is prepared from the organic silicon modified polyurethane, the composite reinforcing filler, the matting pigment, the antioxidant, the ultraviolet light absorber, the light stabilizer, the moisture scavenger, the tackifier and the catalyst. The silane modified polyurethane resin has the advantages of being high in bonding effect, weather resistance and mechanical strength and the like, and compared with existing products, the transparent sealant has better yellowing resistance, crack resistance and bonding performance and has good application prospects.

The object of the present invention is to provide an active energy ray curable coating composition for metal substrates that exhibits good hardness, processability, and weather resistance of the cured coating film, as well as laminates and molded processed members using the same. Another object of the present invention is to provide an active energy ray curable coating composition for metal substrates that exhibits good coating film properties even when an ultraviolet absorber is used, and that does not cause precipitation of the ultraviolet absorber during storage, thus exhibiting good storage stability. [Solution] An active energy ray curable coating composition for a metal substrate comprising a binder component (A) and an ultraviolet absorber (B), wherein the binder component (A) comprises a urethane (meth)acrylate (A-1), a radical polymerizable monofunctional monomer (A-2) having an alicyclic structure, and a radical polymerizable monofunctional monomer (A-3) having a heterocyclic structure and a homopolymer glass transition temperature (Tg) of 20°C or higher, and a coated laminate using the same.

This invention discloses a low-VOCs, low-odor environmentally friendly material for the production of sealing strips for passenger vehicles and its preparation method, belonging to the field of polymer materials technology. The technical solution includes the following raw materials in parts by weight: 100 parts PVC resin; 5 parts stabilizer; 40-60 parts plasticizer; 0.4-0.6 parts lubricant; 1.3-1.5 parts antioxidant; 0.3-0.4 parts ultraviolet absorber; 0.3-0.5 parts deodorizer A; 0.8-1.0 parts deodorizer B; 10-25 parts light active calcium carbonate; 1.0-1.2 parts pigment; deodorizer A is a complex of zinc amino acid, and deodorizer B is benzoic anhydride-intercalated modified aluminum-magnesium hydrotalcite. This invention can capture free, irritating small-molecule alcohols and convert them into esters with milder odors, effectively preventing alcohols from being converted into irritating ethers and ketones during processing, thus reducing the odor and VOCs of passenger vehicle sealing strips.

This invention relates to the field of insulation materials technology, specifically to a high-strength, tear-resistant, halogen-free, flame-retardant insulating material and its preparation method. The high-strength, tear-resistant, halogen-free, flame-retardant insulating material comprises the following components by weight: 70-90 parts EPDM rubber, 5-15 parts thermoplastic elastomer, 15-25 parts medium-density polyethylene, 10-20 parts ethylene-vinyl acetate copolymer, 3-5 parts triallyl isocyanate, 2-4 parts sulfur, 1-3 parts polyethylene wax, 3-5 parts zinc oxide, 1-3 parts antioxidant, 30-50 parts aluminum hydroxide, 20-40 parts modified silica, 0.2-0.5 parts ultraviolet absorber, 1-3 parts accelerator, and 2-4 parts silicone masterbatch. The high-strength, tear-resistant, halogen-free, flame-retardant insulating material prepared by this invention exhibits excellent tensile and tear resistance and flame-retardant properties, thereby extending its service life.

The invention relates to a preparation method of a high-performance ink material for a writing pen, and belongs to the technical field of ink materials. The high-performance ink material for the writing pen is obtained by self-making the modifier and blending the modifier with the pigment and other auxiliaries, and the modifier connects the benzotriazole with the hydroxypyridine, so that a conjugated system is expanded, the ultraviolet absorption strength of the modifier is higher, the efficiency is higher, and the ink material is more suitable for the writing pen. Ether introduced by pyridine can be used as a hydrogen bond acceptor to form a hydrogen bond with resin in an ink system, so that the ultraviolet light absorber is prevented from being separated out; quaternary ammonium salt cations in the modifier can improve the adhesive force and color fastness of the ink and the friction resistance and water resistance after writing; meanwhile, tert-butyl in the modifier reduces surface tension through steric hindrance, promotes leveling of ink and ink mark uniformity and enhances dispersion stability among resin, auxiliaries and pigment, so that the ink is not prone to layering and deterioration after being placed for a long time.

The present invention provides a light-absorbing composition, a light-absorbing film, and an optical filter that are advantageous in terms of reproducing human visual sensitivity, particularly in terms of light absorption characteristics in the short-wavelength region, as well as a method for manufacturing such a light-absorbing film. [Solution] The light-absorbing composition according to the present invention contains an ultraviolet absorber having a hydroxyl group and a carbonyl group in its molecule, and a metal component. At least a portion of the metal component is bonded to an organic oxy group.

The invention discloses a weather-resistant anti-crack waterproof building coating as well as a preparation method and a construction method thereof, and relates to the technical field of building protection materials. The weather-resistant, crack-resistant and waterproof building coating disclosed by the invention is prepared from a water-based fluorocarbon emulsion, an acrylate copolymer, epoxy resin, composite modified nano titanium dioxide, maleic anhydride grafted sepiolite, chopped basalt fibers, an ettringite generating agent, an ultraviolet light absorber, an antioxidant, a polycarboxylic acid type water reducing agent, a defoaming agent, a coalescing agent and deionized water. The weather-resistant anti-crack waterproof building coating can meet the protection requirement of a building outer wall under the outdoor complex working condition, the synergistic performance of weather resistance, durability, crack resistance, seepage prevention and high adhesion is achieved, the prepared protective coating is good in stability and long in service life, external erosion such as ultraviolet rays, rainwater and temperature changes can be effectively resisted, the problems of cracking, falling off, aging and the like of the coating are solved, and the weather-resistant anti-crack waterproof building coating is suitable for large-scale popularization and application. The protection period of the building exterior wall is prolonged.

This invention relates to the field of glass interlayer film technology, specifically to an interlayer film for glass that combines heat insulation and sound insulation properties, its preparation method, and its application. The preparation steps include: S1. Preparation of an anti-shrinkage modifier; S2. Mixing PVB resin powder, plasticizer, anti-shrinkage modifier, modified sound and heat insulation microspheres, auxiliary modifier, and UV absorber UV-326 at room temperature until homogeneous to obtain a composite mixture; S3. Feeding the composite mixture into a co-rotating twin-screw extruder for melt extrusion, flowing out through a T-die, calendering and cooling with a three-roll calender, and then cutting and winding it online to obtain the interlayer film. The synergistic effect of the modified sound and heat insulation microspheres, anti-shrinkage modifier, and auxiliary modifier in this invention, achieving deep synergy in structure, function, and interface, solves the industry technical bottleneck of traditional PVB interlayer films where sound and heat insulation are difficult to achieve simultaneously, and performance and durability are mutually restrictive. This provides an innovative glass interlayer film that combines high performance, high durability, and high processability.

A resin part 110 for a writing implement according to the present invention contains an acrylonitrile–butadiene–styrene resin composition. The acrylonitrile–butadiene–styrene resin composition contains an ultraviolet absorber for a UV-A region, an ultraviolet absorber for a UV-B region, and a light stabilizer.

The invention discloses a water-based bio-based ester low-volatile coating for agricultural equipment and a coating method of the water-based bio-based ester low-volatile coating. Comprising the following components in parts by weight: 40-50 parts of bio-based polyester polyol, 8-14 parts of an IPDI water-based curing agent dispersion, 10-15 parts of bio-based fatty acid coated and modified heavy calcium carbonate, 2-4 parts of hollow glass beads, 1-2 parts of a chitosan modified bio-based pesticide-resistant penetrant, 0.5-1 part of a bio-based benzotriazole water-based ultraviolet light absorber and 20-30 parts of deionized water. 0.3 to 0.6 part of xanthan gum modified bio-based thickening agent and 0.3 to 0.8 part of bio-based defoaming agent. The preparation method has the beneficial effects that the bio-based polyester polyol is adopted as a core film-forming base material and matched with various bio-based auxiliaries, so that the requirements of current environmental protection laws and regulations are met, and the preparation method is friendly to human bodies and the environment; through optimization of component matching, the coating has excellent wear resistance, pesticide penetration resistance, vibration resistance and low temperature resistance, and can meet working condition requirements of different agricultural machinery parts.

The invention discloses a cold-proof and heat-insulation polyurethane composite material applied to door and window assemblies, and belongs to the technical field of composite materials. The composite material is prepared from polyurethane resin, modified hollow glass beads, aerogel powder, basalt fibers, a composite flame retardant, a composite anti-aging agent and other raw materials according to specific parts. The modified hollow glass beads are subjected to composite modification through a silane coupling agent KH-550 and polyethylene glycol distearate, the composite flame retardant is prepared by compounding magnesium hydroxide, montmorillonite and pentaerythritol phosphate, and the composite anti-aging agent is prepared by combining an ultraviolet light absorber, an antioxidant and a hindered amine light stabilizer. By optimizing the formula and the preparation process, the material has excellent cold-proof and heat-insulating properties, mechanical properties, flame retardance and aging resistance, is low in heat conductivity coefficient, high in strength, environment-friendly, safe and long in service life, meets the use requirements of door and window components in the building field, is simple in preparation process and is suitable for industrial production.

The invention discloses a production method of a PA / PE high-barrier composite film bag. The composite film bag comprises an outer layer, a middle layer and an inner layer, the outer layer is prepared from PA6, glass fibers, maleic anhydride grafted polyethylene, an antioxidant, a slipping agent, an ultraviolet light absorber, titanium dioxide, nano silicon dioxide and polyimide; the middle layer is prepared from EVOH (Ethylene Vinyl Alcohol), polyamide-imide, nano montmorillonite, maleic anhydride grafted polypropylene, an antioxidant, a slipping agent, terpene resin, polyvinylidene chloride and polybutylene terephthalate; the inner layer is prepared from HDPE, LLDPE, mPE, an antistatic agent, silicon dioxide, dioctyl phthalate, an antibacterial agent and polylactic acid. The composite film bag prepared by the invention not only has high barrier property and good strength, but also has various functions.