8results about How to "Increase flame retardancy" patented technology

The preparation method comprises the following steps: treating sepiolite serving as a raw material with 3-aminopropyltriethoxysilane to prepare aminated sepiolite, ultrasonically blending the aminated sepiolite and a modified filler, then treating with phytic acid to prepare a flame-retardant filler, melting bisphenol A polycarbonate, blending with the flame-retardant filler, and carrying out extrusion molding to obtain the flame-retardant fireproof plastic. When the flame-retardant fireproof plastic is combusted, the flame-retardant filler is subjected to evaporation of hot water molecules to cause structural expansion and form an isolation layer, meanwhile, evaporation of the water molecules can take away heat, released ammonia gas can reduce the content of smoke so as to achieve the flame-retardant effect, and generated inorganic acid and phosphate ester are dehydrated and carbonized, so that the flame-retardant fireproof plastic has a good flame-retardant effect. The carbon layer with large interlayer spacing is formed through cooperation with the isolation layer, an organic silicon structure is contained, Si-C can be formed, then the density of the carbon layer is increased, aluminum oxide and magnesium oxide can be formed after internal aluminum ions and magnesium ions are combusted at high temperature, then the flame retardance of the carbon layer is improved, and the flame-retardant and fireproof effects of the plastic are improved.

The invention relates to the technical field of acrylic plates, in particular to an oil-stain-resistant acrylic plate and a preparation method thereof.Graphene modified polymethyl methacrylate serves as a base material to prepare the acrylic plate, the prepared acrylic plate can have excellent oil-stain-resistant performance, graphene serves as a two-dimensional carbon material, and the oil-stain-resistant performance of the acrylic plate is improved; due to the extremely high specific surface area and excellent physical performance, the surface energy of the material can be effectively improved, the adsorption capacity of oil stains is reduced, graphene is uniformly dispersed in a polymethyl methacrylate matrix through an in-situ polymerization method, the original processing performance of polymethyl methacrylate can be kept, and the mechanical property of the polymethyl methacrylate is improved. The material can be endowed with super-hydrophobic and low-surface-energy characteristics, so that the oil stain prevention effect is remarkably improved; secondly, due to the addition of modified zinc oxide, modified titanium dioxide and modified silicon dioxide, the surface self-cleaning capability of the material can be further enhanced under the action of organic functional groups on the surfaces and a silane coupling agent, so that oil stains are difficult to adhere and easy to clean.

This invention discloses a nanoparticle-filled silicone rubber and its preparation method, relating to the field of polymer materials technology. The preparation method of the nanoparticle-filled silicone rubber of this invention includes the following steps: (1) adding 80-100 parts of raw silicone rubber, 10-25 parts of reinforcing filler, 1-3 parts of dimethyl hydroxy silicone oil, 3-10 parts of modified nano flame retardant, 0.05-2 parts of antioxidant, and 0.05-5 parts of lubricant to a mixing mill. Under nitrogen protection, the mixing temperature is 40-60℃, the rotation speed is 20-100 rpm, and the duration is 5-30 min to obtain a mixed mixture; (2) transferring the mixed mixture to an open mill, adding 2-5 parts of vulcanizing agent, mixing evenly, and then extruding and vulcanizing to obtain the product. The product prepared by this invention not only has good flame retardant properties but also excellent strength and toughness. The nanoparticle-filled silicone rubber of this invention can be widely used in high-grade wires and cables, aviation, aerospace, energy systems, electronics, automobiles, and other fields.

The invention discloses a flame-retardant bio-based benzoxazine resin Poly (PT-fa), a cured resin Poly (PT-fa) is prepared by thermocuring a bio-based benzoxazine monomer PT-fa, and the obtained resin has high thermal stability and high flame retardance; pT-fa is prepared from hydroxytyrosol, furfuryl amine and paraformaldehyde as raw materials through a solvent-free synthesis method, the obtained monomer has high purity, and the yield is 80-90%; the temperature Tdi of the Poly (PT-fa) is 310-330 DEG C when the Poly (PT-fa) is subjected to 5% thermal weight loss in a nitrogen atmosphere, and the carbon residue rate Yc at 800 DEG C is 60-70%; the heat release capacity HRC is 15-25 J / g.K, and the total heat release amount THR is 2-4 kJ / g. The preparation method comprises the following steps: 1, preparing a bio-based benzoxazine monomer PT-fa; and 2, curing the heat-resistant bio-based benzoxazine resin.

The invention relates to a polymer ardealite cable bridge which comprises a shell. The shell is prepared from the following raw material components: 90 to 110 parts of polyvinyl chloride resin, 90 to 110 parts of II type anhydrous gypsum, 60 to 80 parts of a fiber mixture, 1 to 10 parts of polyurethane, 1 to 10 parts of methyltris (methylethylketoxime) silane, 1 to 10 parts of vinyltris (methylethylketoxime) silane, 1 to 3 parts of stearic acid, 3 to 6 parts of titanium dioxide, 20 to 30 parts of an impact modifier and 1 to 5 parts of dibasic lead stearate. Wherein the fiber mixture is polyether sulfone spiral fiber and chopped fiber, and the chopped fiber is at least two of graphite chopped fiber, glass chopped fiber and basalt chopped fiber. The high-molecular ardealite cable bridge is high in rigidity, good in tensile force and sufficient in loading capacity; the flame retardance, the heat resistance and the corrosion resistance are good.

The present disclosure relates to an organic-inorganic composite polymer electrolyte and an all-solid-state battery including the same, and provides an organic-inorganic composite polymer electrolyte including a flame retardant polymer and a flame retardant inorganic salt having a shear modulus of 7 to 60 GPa, and an all-solid-state battery including the organic-inorganic composite polymer electrolyte.

The invention relates to the technical field of bio-based polyurethane foam, in particular to high-temperature-resistant and flame-retardant bio-based polyurethane foam and a preparation method thereof.The bio-based polyurethane foam is prepared by mixing a component A and a component B according to the mass ratio of 1: 1.2-1.35; wherein the component A is prepared from 75 to 85 parts of a bio-based polyol composition, 8 to 10 parts of a foaming agent, 0.8 to 1.2 parts of a catalyst, 10 to 12 parts of a flame retardant, 1.0 to 1.5 parts of an antistatic agent, 2.5 to 3.0 parts of a functional auxiliary agent, 0.03 to 0.08 part of a visual auxiliary agent, 0.5 to 1.0 part of an antibacterial agent and 0.3 to 0.5 part of a rare earth modified auxiliary agent; and the component B is prepared by mixing diphenylmethane diisocyanate and hexamethylene diisocyanate. The preparation method comprises the following steps: preparing the rare earth ion pre-dispersion liquid, sequentially adding all the materials into a stirring kettle, stirring to obtain the component A and the component B, and mixing the component A and the component B to obtain the bio-based polyurethane foam. The invention solves the problem of single function of bio-based polyurethane foam.

The invention belongs to the technical field of coatings for insulation protection in the power industry, and particularly relates to a two-component fluororesin-based anti-pollution flashover coating as well as a preparation method and application thereof. According to the invention, a surface micro-nano rough structure is constructed by introducing the compound fluororesin and the multi-size powder particles, adding the auxiliary agent and the like, and the anti-pollution flashover coating with strong aging resistance, super-hydrophobicity and high self-cleaning property is designed. Wherein the compound fluororesin adopts a perfluororesin base material, the carbon chain of the perfluororesin is spiral, and the energy of a C-F bond is relatively large, so that the carbon-carbon bond is protected, the surface bond is prevented from being broken and aged, and the aging resistance of the coating in outdoor use is improved; nanoscale titanium dioxide has an organic photocatalytic degradation effect, so that adhesion and accumulation of organic dirt caused by long-term outdoor use are avoided; through the synergistic effect of all the components, a surface micro-nano rough structure is constructed, so that the surface of the coating has super-hydrophobicity, dirt on the surface is easily taken away in rainy days, high self-cleaning performance is achieved, and important theoretical significance and application value are achieved.