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

The invention relates to the textile finishing agent field, in particular to a super-soft finishing agent of silicone oil. The super soft finishing agent of the silicone oil comprises a silicone oil compound with the following cation structural formula as followed. The silicone oil compound occupies a weight percentage of 2%-60% in the finishing agent, the n1 is 5-10, the R is a polyether group, and a polymerization degree is 3-50. The super soft finishing agent of the silicone oil is suitable for feel finishing of one or more fiber constituted fabric such as cotton, Dacron, chinlon and acrylic fibers, and provided with better soft, smooth and fluffy effects than amino-modified silicone oil and excellent stability in resistance to acid and alkali, electrolyte, high temperature, shearing and the like; and problems of easy demulsification, floating oil, roll banding, difficult rework and the like in the existing amino-modified silicone oil are completely solved.

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 discloses a polyimide oligomer and a liquid photoimagable solder resist ink. A structural formula of the polyimide oligomer is as follows: R1 is alicyclic, R2 is alkyl with at least one carbon ring structure, n is not less than 1 and not more than 30, m is not less than 1 and not more than 30, p is not less than 1 and not more than 30, and (n+1-m-p) is more than 0, x is not less than 5 and not more than 50. The photoimagable polyimide oligomer has the advantages of excellent heat resistance, soldering resistance, golden resistance, chemical resistance, and yellowing resistance. The liquid photoimagable solder resist ink prepared from the oligomer has excellent heat resistance, soldering resistance, golden resistance, chemical resistance, yellowing resistance, insulativity, high resolution, high flexibility and high adhesion, can be used for effectively solving the problem that the liquid photoimagable solder resist ink is easy to yellow at high temperature under the processes of thermocuring, solder coating and reflow soldering, and is especially suitable for preparing white solder resist ink so as to achieve high reflecting whiteness.

The invention relates to a preparation method of an EVA (ethylene-vinyl acetate) film surface paint. The EVA film surface paint is composed of the following components in percentage by mass: 5-10% of carbon nanotube, 5-15% of nano silicon dioxide, 3-15% of fatty alcohol polyethenoxy ether, 3-5% of acrylic acid, 3-5% of propylene glycol monomethyl ether acetate and the balance of organic solvent. The mass ratio of the fatty alcohol polyethenoxy ether to the acrylic acid is 1:1-3:1; and the fatty alcohol polyethenoxy ether is used as a dispersant, the acrylic acid 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 film surface 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 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 an anti-yellowing reinforced nylon 66 material and a preparation method thereof. The preparation method comprises steps as follows: functional monomers and phosphate heat stabilizers are dispersed in coupling agents, ethanol is added for dilution and alcoholysis, and PH value of a slurry is adjusted to be 3.2-3.8; glass fiber is soaked in the prepared slurry and dried, and processed glass fiber is obtained; nylon 66, long-carbon-chain nylon and antioxidants are evenly mixed by a high-speed mixer and added from a main feeding port of a twin-screw extruder, the processed glass fiber is added from a side feeding port and subjected to extrusion, bracing and pelletizing, and the anti-yellowing reinforced nylon 66 material is obtained. The anti-yellowing performance of the prepared material is far higher than that of other ordinary reinforced materials.

The invention relates to a preparation method of 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: 10-20% 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 adhesive film surface.

The invention discloses an alkylphenol-modified phenolic amide curing agent and a preparation method thereof. The raw material components contain phenol or phenol derivatives, formaldehyde or paraformaldehyde, polyamines, fatty acids or fatty acid polymers. The preparation method includes: Mix fatty acid or fatty acid polymer, polyamine, heat up reaction, cool down, add phenol or phenol derivative, formaldehyde or paraformaldehyde, mix, heat up reaction, dehydrate to obtain product; or mix phenol or phenol derivative, polyamine, Formaldehyde or paraformaldehyde is mixed evenly, the reaction is heated up, fatty acid or fatty acid polymer is added, the reaction is heated up and dehydrated to obtain the product. The curing agent of the invention has strong resistance to salt spray corrosion, and its performance is better than that of polyamide curing agents, modified phenalkamine resins and their mixtures. The curing agent of the invention has good impact strength, flexibility and excellent performance. water resistance.

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.

The invention relates to the field of textile finishing agents, in particular to a method for preparing a super-slippery hydrophilic quaternary ammonium salt-modified organosilicon copolymer, which comprises the following steps: Synthesize cationic modified polyether amine intermediate under the following conditions; add glacial acetic acid to the cationic modified polyether amine intermediate and epoxy-terminated polyether silicone oil for addition polymerization of amino and epoxy groups in the presence of an organic solvent , Synthetic ternary block silicone oil. The super-slippery hydrophilic quaternary ammonium salt modified silicone copolymer prepared by the present invention endows cotton fabrics with excellent hydrophilic properties and outstanding silky effect, and its smoothness can reach the level of ordinary amino silicone oil, which is better than most ternary silicone oils. Block silicone oil; the improvement of the degree of cationization endows the super-smooth hydrophilic quaternary ammonium salt modified silicone copolymer with certain antibacterial and antistatic functions, and at the same time can effectively solve the problem of easy yellowing of amino under high temperature conditions. Smaller, suitable for finishing white or light colored fabrics.