47results about How to "Solve easy yellowing" patented technology

The invention relates to a thermoplastic polyvinyl alcohol material. The thermoplastic polyvinyl alcohol material is prepared from, by weight, 100 parts of polyvinyl alcohol, 2-15 parts of polylactic acid, 10-40 parts of compound plasticizer and 1-8 parts of assistant. The raw materials are mixed to obtain a precursor, then the precursor is extruded by an extrusion machine, granulated or directly formed. The prepared thermoplastic polyvinyl alcohol material is high in tensile strength, excellent in mechanical property and good in processing fluidity, does not easily yellow and does not absorb moisture, and a preparation method is simple in process, low in carbon, environmentally friendly, shorter in preparation cycle and higher in production efficiency, and industrialization is easy to achieved.

The invention belongs to the technical field of printing and dyeing auxiliaries, particularly relates to an ice feeling finishing agent and a preparation method thereof. The ice feeling finishing agent mainly comprises raw silicone oil, an emulgator, a cosolvent, glacial acetic acid and water, wherein the raw silicone oil is prepared by adding 99-99.5% of silicone oil, 0.01-0.9% of a silane coupling agent and 0.01-0.1% of a catalyst into a reaction kettle for reaction. According to the ice feeling finishing agent and the preparation method thereof, provided by the invention, primary amine or / and secondary amine is / are introduced onto the molecular chain of silicone oil, therefore the hydrophilic performance of the overall molecular structure is improved, fabric subjected to finishing of the finishing agent has air-permeating, moisture permeating, moisture-absorbing and sweat releasing functions, at the same time can maintain a certain humidity, and enables people to have a feeling of comfortableness and coldness after wearing the clothes subjected to finishing; besides, the ice feeling finishing agent has excellent stability, thoroughly overcomes the defects that the conventional amino silicon oil is prone to demulsification, floating and roll sticking, can easily produce oil spots, and is not easy to repair.

The invention relates to an EVA (ethylene-vinyl acetate) adhesive film surface nano paint. The EVA adhesive film surface nano paint is composed of the following components in percentage by mass: 15-20% of carbon nanotube, 5-15% of nano silicon dioxide, 3-15% of fatty alcohol polyethenoxy ether, 3-5% of carboxymethyl cellulose, 3-5% of propylene glycol monomethyl ether acetate and the balance (10-30%) of organic solvent. The mass ratio of the fatty alcohol polyethenoxy ether to the carboxymethyl cellulose is 1:1-3:1; and the fatty alcohol polyethenoxy ether is used as a dispersant, the carboxymethyl cellulose is used as an adhesive, and the propylene glycol monomethyl ether acetate is used as a film-forming assistant. The coating film formed by the EVA adhesive film surface nano paint has electric conductivity and low yellowing rate, and enhances the photoelectric conversion rate of the battery pack; and the preparation method is simple in technique and convenient to operate, and can efficiently enable the carbon nanotubes and silicon dioxide nanotubes to be uniformly dispersed and fixed to the EVA film surface.

The invention provides high-temperature expanded polymer microspheres and a preparation method thereof and belongs to expandable particles. The high-temperature expanded polymer microspheres are prepared from a thermoplastic resin shell body and a foaming agent packaged in the shell body, wherein an oil-phase composition composed of a polymerizable monomer and a crosslinking agent can be dispersedinto a water-phase dispersed composition; in the presence of the foaming agent, the polymer microspheres coated with the foaming agent are directly prepared through carrying out suspension polymerization reaction and coating the foaming agent in situ; the high-temperature expanded polymer microspheres are characterized in that the oil-phase composition contains the polymerizable monomer and the crosslinking agent, and also comprises a silane coupling agent; the foaming agent is a mixture of isopentane, isooctane and n-octane; the high-temperature expanded polymer microspheres provided by theinvention have the advantages of complete core-shell structure, uniform grain diameter distribution, high foaming agent coating efficiency, good heat resistance of a shell-layer polymer, relatively high initial temperature in an expansion process, relatively high highest expansion temperature and high foaming ratio, have a relatively wide foam stabilizing temperature range, and are suitable for being applied to a thermoplastic resin, rubber or thermoplastic elastomer foaming and processing technology.