64results about How to "Heat aging" patented technology

The invention discloses a waterborne PU high smooth wax resin for synthetic leather and the resin comprises the following raw materials by weight percent: 30-40% of waterborne silicon-fluorine resin,20-30% of waterborne polyurethane, 10-30% of water, 0.2-0.8% of waterborne wax emulsion, 1-3% of organic silicone oil smoothing agent, 0.5-1% of organic silicone flatting agent, 2-5% of organic silicone defoamer and 0.5-2% of waterborne polyurethane thickener. The waterborne PU high smooth wax resin for synthetic leather provided by the invention uses water as solvent instead of toxic solvents such as dimethyl formamide, butanone and the like and has the advantage of noninflammability, safety, environmental protection, cost-saving and the like. The finished product prepared from the waterbornePU high smooth wax resin for synthetic leather provided by the invention has full hand feeling, high luster and high luminance, extremely smooth waxy feeling, delicate texture and good air permeability; and the prepared synthetic leather has good comprehensive effect in hand feeling, smoothness, water resistance, waxy feeling and the like.

The invention discloses a water-based PU high solid resin combination for synthetic leather, which comprises the following materials by weight percent: 25 to 35 percent of water-based polyurethane resin, 45 to 55 percent of water, 10 to 20 percent of modified organic silicon polymer, 0.5 to 1.5 percent of organic silicon flatting agent, 1 to 3 percent of organic silicon foam killer and 1.5 to 4.5 percent of water-based polyurethane thickening agent. The water-based PU ironing finishing agent has the advantages that the mixture ratio of the component is scientific and reasonable, and the components are coordinated with each other and act together; the high solid resin combination has the advantages of good film reforming property, firm bonding, solvent resistance, cold resistance, hydrolysis resistance and thermosenescence resistance of coating; the finished product made of the synthetic leather, the surface of which is treated by the high solid resin combination, has the advantages that the original effect of the leather surface is not affected, raised patterns on the leather surface are sufficient in contrast to the leather sole after the leather surface is treated and modified, and the leather surface has unique high solid effect.

The invention discloses a water-based PU brush surface conditioning agent for synthetic leather, which comprises the following materials by weight percent: 10 to 20 percent of water-based stoving varnish resin, 1 to 6 percent of water-based polyurethane, 60 to 70 percent of water, 5 to 13 percent of silicon dioxide matting agent, 0.5 to 2 percent of organic silicon flatting agent, 1 to 5 percent of organic silicon foam killer and 2 to 6 percent of water-based modified polyethylene wax emulsion. In the water-based PU brush surface conditioning agent for synthetic leather, water is taken as solvent to replace noxious solvents, such as dimethyl formamide and butanone, so that the water-based PU brush surface conditioning agent has the performances of non-inflammation, safety, environmental protection and cost saving, and resin has the advantages of good film reforming property, firm bonding, solvent resistance, cold resistance, hydrolysis resistance and thermosenescence resistance of coating, and the finished product made of the surface conditioning agent has unique brush effect, strong dermis effect, water resistance and good air permeability.

The invention discloses a water-based PU matte surface finishing agent for synthetic leather, which comprises the following materials in parts by weight: 30 to 40 parts of water-based polyurethane resin, 45 to 55 parts of water, 4 to 10 parts of modified organic silicon polymer, 0.5 to 1.5 parts of organic silicon flatting agent, 1 to 2 parts of organic silicon foam killer, 1 to 2 parts of water-based polyurethane thickening agent, and 3 to 5 parts of modified organic silicon matting agent. For the water-based PU matte surface finishing agent, the mixture ratio of the components is scientific and reasonable, and the components are coordinated with each other and act together. The matte surface finishing agent has the advantages of good film reforming property, firm bonding, solvent resistance, hydrolysis resistance and thermosenescence resistance of coating. The finished product made of the synthetic leather, the surface of which is treated by the matte surface finishing agent, has the advantages that the original effect of the leather surface is not affected, particularly the combined application of the modified organic silicon matting agent and the polyurethane resin ensures that the treated leather surface has unique matte surface effect, and the synthetic leather has good comprehensive effects of good air permeability, good hand feel, water resistance, cohesiveness and the like.

The invention discloses water PU cracking resin for synthesizing leather, which comprises following materials in percentage by weight: 60-70 percent of water polyurethane resin, 20-35 percent of water, 0.3-2 percent of organic silicon flatting agent and 0.5-4 percent of water polyurethane thickener. The water PU cracking resin for synthesizing leather uses water as solvent to replace dimethyl formamide and butanone and other toxic solvents, thereby achieving the non-inflammable, safe, environmental-protection and cost-saving performance. In addition, the cracking resin has the advantages of good film forming, firm bonding, solvent-resist, cold resist, hydrolysis-resist and heat aging-resist performances, and the like. Finished products made by using the cracking resin have the advantages of excellent cracking effect, better real leather quality, fine and smooth texture, good air permeability, and the like.

The invention discloses crystal-like synthetic leather having a contraction pattern. The synthetic leather comprises a base cloth layer (1), a modified polyurethane foaming layer (2) coated on the base cloth layer (1), a polyurethane adhesive layer (3) coated on the modified polyurethane foaming layer (2), an aqueous polyurethane resin layer (4) coated on the polyurethane adhesive layer (3), an acrylic resin layer (5) coated on the aqueous polyurethane resin layer (4) and a crystal-like resin (6) coated on the acrylic resin layer (5). Contracted lines of the synthetic leather provided in the invention can generate different patterns according to difference of lines of release paper, producing a unique visual effect; the obtained synthetic leather has the effects of high brightness and high light, a strong sense of transparency and crystal and the advantages of smoothness, a strong leather feel and the like.

The invention discloses a water-based PU matte surface color fixing finishing agent for synthetic leather, which comprises the following materials in parts by weight: 30 to 40 parts of water-based polyurethane resin, 50 to 60 parts of water, 3 to 6 parts of modified organic silicon polymer, 1 to 2 parts of organic silicon flatting agent, 1 to 2 parts of organic silicon foam killer, 1 to 2 parts of water-based polyurethane thickening agent, and 2 to 3 parts of modified organic silicon matting agent. For the water-based PU matte surface color fixing finishing agent, the mixture ratio of the components is scientific and reasonable, and the components are coordinated with each other and act together. The matte surface color fixing finishing agent has the advantages of good film reforming property, firm bonding, solvent resistance, hydrolysis resistance and thermosenescence resistance of coating. The finished product made of the synthetic leather, the surface of which is treated by the matte surface finishing agent, has the advantages that the original effect of the leather surface is not affected, particularly the combined application of the modified organic silicon matting agent and the polyurethane resin ensures that the treated leather surface has unique matte surface color fixing effect, and the synthetic leather has good comprehensive effects of good air permeability, good hand feel, water resistance, cohesiveness and the like.

The invention discloses a polypropylene honeycomb core glass fiber polypropylene composite board. The composite board is composed of a polypropylene glass fiber layer, a polypropylene honeycomb core and a polypropylene glass fiber layer laminated sequentially from bottom to top. The constituent materials of the composite board are in parts by weight, including 29.5 parts of polypropylene fibers, 35 parts of glass fibers, 0.5 parts of carbon black, and 35 parts of polypropylene honeycomb cores; the raw materials of the polypropylene honeycomb cores are in parts by weight, wherein 90 parts of polypropylene, 10 parts of low melting point polypropylene. The invention has the characteristics of heat aging resistance, permanent moisture resistance, mildew resistance and no peculiar smell, no deformation, no peculiar smell and no mildew after long-term use, low odor, low volatility and low VOC, the inner and outer materials are the same, the core layer and the The skin has good adhesion, high load-bearing strength, and high peeling strength. Leftovers and scrap products can be recycled directly, saving resources and meeting environmental protection requirements.

The invention relates to an organic silicon pouring sealant for LEDs. The organic silicon pouring sealant for LEDs is characterized by comprising the following components (in parts by weight): 90-100 parts of low-viscosity 107 glue, 1-5 parts of hydroxyl end-capping silicone oil, 2-5 parts of methyl silicone oil, 1-5 parts of methyl fluorosilicone oil , 5-10 parts of a cross-linking agent, 1-5 parts of a cross-linking agent and 1-5 parts of a catalyst. The preparation method comprises: adding the low-viscosity 107 glue, the hydroxyl end-capping silicone oil, the methyl silicone oil and the methyl fluorosilicone oil into a stirrer in formula to be stirred for 30 minutes at a high speed, and carrying out vacuum pumping to remove air bubbles to obtain a mixture II; taking the mixture I as base glue; adding the cross-linking agent, the coupling agent and the catalyst according to the formula to be uniformly mixed to obtain a mixture II, and taking the mixture II as an auxiliary gent; and uniformly mixing the base glue with the auxiliary agent in a ratio of the base glue to the auxiliary agent being 10:1, thereby obtaining the organic silicon pouring sealant for LEDs. The organic silicon pouring sealant disclosed by the invention is excellent in bonding force, high in transparency, good in bubble discharge, quick in deep-layer curing and free of yellowing. The organic silicon pouring sealant can be used for protecting the LEDs from invasion of the external environment for a long time.

The invention discloses synthetic leather with contracted patterns, which comprises a substrate cloth layer, a polyurethane foaming layer (2) coated on the substrate close layer (1), a polyurethane adhesive layer (3) coated on the polyurethane foaming layer (2), polyurethane cracking resin (4) coated on the polyurethane adhesive layer (3) and modified polyurethane (5) coated on the polyurethane cracking resin (4). In the synthetic leather, the polyurethane cracking resin coated on the polyurethane adhesive layer has special polished cracking effect, the modified polyurethane is coated on the cracking resin, the modified polyurethane and the cracking resin are combined to play a synergistic function and can generate fine contraction effect with unique patterns, and the cracking resin and the modified polyurethane can be contracted to form different patterns according to different texture of release paper, thereby having strong visual aesthetics.

An ultraviolet curing coating for coating a plastic surface is prepared from the following materials of 50-55 parts of aromaticurethane acrylate, 2-3 parts of isopropyl alcohol, 4-5 parts of photoinitiator 184, 1-2 parts of nanosilicon dioxide, 9-12 parts of tripropylene glycol diacrylate, 1-2 parts of zirconium oxide, 1-2 parts of titanium dioxide, 2-4 parts of butyl acrylate, 1-2 parts of fatty acid polyglycol ester, 1-2 parts of glycidolbutyl ether, 3-4 parts of triethylene glycol, 1-2 parts of polyvinyl alcohol, 1-2 parts of titanatecoupling reagent TMC-TTS, and 5-6 parts of dispersing auxiliaryaccording to parts by weight. Due to the use of the aromaticurethane acrylate, the coating provided by the invention has the excellent high-wearing feature, excellent anchoring strength, excellent flexibility, excellent high peel strength and excellent low temperature resistance property as well as the remarkable optical property and weather resistance of the polyacrylate, and has high cohesiveness on plastics and the like; due to the use of the nano silicon carbide and titanium dioxide, the coating has an excellent shielding effect and fulfills the purposes of ultraviolet aging resistance and thermal aging resistance, the heat insulation property of the coating is added at the same time, and the coating provided by the invention is applicable to the coating of a plastic product.