12results about How to "High flame retardant efficiency" patented technology

The present application relates to a kind of high flame-retardant low-toxicity environmental protection computer cable and its preparation method, belong to computer cable technical field.The insulating layer and / or sheath layer of the cable uses environmental protection toughening flame-retardant composite material, it is with polyolefin resin as matrix, compound modified nano-aluminum hydroxide with KH560 silane coupling agent, melamine cyanurate, gradient compound ethylene-vinyl acetate copolymer and maleic anhydride graft polyolefin, by limiting core component ratio and key parameter, realize high flame-retardant, low-toxicity environmental protection and low-temperature toughness Synergistic unity.The present application process is simple and easy industrialization, applicable to computer room, automation control system, instrument signal transmission and other scenes, practicality is strong.

This invention discloses a PVC cable sheath material, comprising the following components by weight: 100 parts PVC resin; 26-40 parts cold-resistant rubber; 45-53 parts cold-resistant plasticizer; 45-52 parts filler; 10-26 parts flame retardant; 9-15 parts heat stabilizer; 0.5-1.2 parts antioxidant; 2.0-3.5 parts lubricant; and 0-1.2 parts colorant. This invention also discloses a method for preparing the PVC cable sheath material and a cold-resistant and flame-retardant cable. The PVC cable sheath material of this invention has excellent cold resistance and flame retardancy, and can meet the requirements for cable sheath use in extremely cold environments of ~40℃ and below.

The application discloses a kind of homogeneous heat-insulating materials and preparation method thereof, belong to heat-insulating material technical field.The material of preparation includes: (1) the mixture of graphene oxide aqueous solution and metal salt, add sodium hydroxide or potassium hydroxide solution to obtain graphene oxide composite inorganic flame retardant solution;(2) to graphene oxide composite inorganic flame retardant solution join surface modifier, obtain the modified graphene oxide composite inorganic flame retardant of powdery;(3) 50-60 parts polyether polyol, 40-50 parts polyester polyol, 3-5 parts uniform foaming agent, 2-3 parts catalyst, 15-18 parts foaming agent, 80-100 parts modified expandable graphite, 160-220 parts modified graphene oxide composite inorganic flame retardant, 15-20 parts organic phosphorus flame retardant and 0.9-1.5 parts water are mixed to obtain mixed liquid;(4) 100-110 parts diisocyanate is added to mixed liquid, after stirring, pour into mould to carry out foaming and curing, i.e.get.The method process is simple, production cost is low and flame-retardant performance, heat-insulating performance, mechanical property and thermal stability are all higher.

This invention relates to the field of flame-retardant composite materials, specifically to flame-retardant composite materials based on the synergistic reinforcement of talc and graphene sheets and their applications. It addresses the problem that existing polymer materials struggle to simultaneously achieve reinforcement, flame retardancy, and lightweighting, and require large quantities of high-performance additives. The process involves first mixing talc sheets, graphene, a composite flame retardant, and a dispersant in a high-speed mixer, then cooling to room temperature to obtain a premix. A polymer matrix is ​​then added to a twin-screw extruder. The premix and other auxiliary additives are added through a side feed port, melt-blended, water-cooled, air-dried, and pelletized to obtain composite material particles. These particles are then vacuum-dried and injection-molded to obtain the flame-retardant composite material. The flame-retardant composite material possesses excellent flame-retardant and mechanical properties, exhibiting outstanding overall performance and being more suitable for industrial production.

This invention provides a flame retardant for water-based fire-retardant coatings for steel structures, prepared from the following raw materials: urea, phosphoric acid, acidic lignin, and pentaerythritol; the weight ratio of urea, phosphoric acid, acidic lignin, and pentaerythritol is 1:(0.8-1):(0.1-0.5):(0.01-0.05). Applying this flame retardant to water-based fire-retardant coatings for steel structures achieves both moisture resistance and flame retardancy.

The utility model discloses a composite flame -retardant epoxy resin board belongs to epoxy resin board technical field, including board main part, the board main part includes glass fiber resin base, one side of glass fiber resin base is pasted with the reinforcing layer, the other side of reinforcing layer is pasted with main flame -retardant layer, the other side of main flame -retardant layer is pasted with insulating flame -retardant layer, and glass fiber resin base, reinforcing layer, main flame -retardant layer and insulating flame -retardant layer are penetrated and fastened with fastening rivet, the outer wall of glass fiber resin base, reinforcing layer, main flame -retardant layer, insulating flame -retardant layer and fastening rivet is wrapped with organic silicon high temperature resistant paint layer. Through the setting of multilayer composite flame -retardant structure, make the glass fiber resin board give consideration to high -efficient flame -retardant efficiency simultaneously, ensure its mechanical property, set up array type anchoring structure simultaneously, effectively avoid the multilayer composite structure of its delamination situation appears because of high temperature, improve its high temperature state board body's stability.

The application relates to the technical field of thermal insulation materials, and discloses a flame-retardant modified thermal insulation foam material and a preparation process thereof. The flame-retardant modified thermal insulation foam material is prepared from low-density polyethylene as a main material and 3,5-di-tert-butyl-4-hydroxyphenyl acetic acid grafting material and the like as auxiliary materials. Silicon phosphorus boron in the hydroxyl-terminated polydimethylsiloxane grafting material serves as a flame-retardant element, a dense thermal insulation oxygen isolation silicon phosphorus boron composite carbon layer is constructed at high temperature, and the flame-retardant effect is achieved. After 3,5-di-tert-butyl-4-hydroxyphenyl acetic acid is grafted to carboxyl-terminated polybutadiene, the antioxidant unit is fixed on the flexible long chain of the carboxyl-terminated polybutadiene through chemical bonding, the antioxidant activity of the antioxidant unit is retained, and the agglomeration phenomenon is inhibited, so that the flame-retardant modified thermal insulation foam material prepared by the application has the flame-retardant, antioxidant and thermal insulation performances.

This invention relates to an environmentally friendly water-based composite flame retardant and its preparation method, belonging to the field of flame retardant preparation technology. The environmentally friendly water-based composite flame retardant formulation is as follows: by weight percentage, modified graphene 1.5-3.0%, nano-magnesium hydroxide 8-12%, nano-sodium silicate 5-8%, surfactant 0.5-1.0%, and the balance being deionized water. Modified graphene, nano-magnesium hydroxide, and sodium silicate produce a synergistic flame-retardant effect. Modified graphene builds a dense carbon layer framework, magnesium hydroxide decomposes endothermally, and magnesium oxide acts as a barrier to reflect heat radiation, while sodium silicate promotes the formation of a silicate glassy carbon layer. The combination of these three components significantly improves the oxygen index of the material. The flame retardant prepared by this invention possesses both excellent thermal conductivity and environmentally friendly properties, and can be widely used in fire fighting and flame retardant applications.

The application relates to the technical field of building adhesives, and particularly discloses a fire-retardant polyurethane two-component corner adhesive and a preparation method thereof; the fire-retardant polyurethane two-component corner adhesive comprises an A component and a B component; the A component comprises, in mass parts, first polyether polyol: 40-55 parts; first filler: 20-35 parts; first thixotropic agent: 1-5 parts; compounded fire retardant: 20-25 parts; modifier: 1-2 parts; catalyst: 0.004-0.008 parts; the B component comprises, in mass parts, curing agent: 35-45 parts; second polyether polyol: 1-5 parts; plasticizer: 8-12 parts; second filler: 40-50 parts; and second thixotropic agent: 1-2 parts; the fire-retardant polyurethane two-component corner adhesive has good fire-retardant function, high hardness, high toughness and high bonding strength; and the fire-retardant polyurethane two-component corner adhesive also has excellent sealing function, structure reinforcing function, shock-absorbing function, sound insulation function and heat insulation function.

This invention belongs to the field of functional polymer materials technology, specifically relating to an antistatic, flame-retardant, and low-warpage PC composite material and its preparation method. The antistatic, flame-retardant, and low-warpage PC composite material comprises the following raw materials in parts by weight: 40-60 parts PC resin, 10-30 parts flat glass fiber, 5-15 parts nano-talc powder, 5-10 parts toughening agent, 3-8 parts flame retardant, 1-5 parts antistatic agent, 0.2-0.5 parts antioxidant, and 0.2-0.5 parts lubricant. This invention uses flat glass fiber and nano-talc powder as reinforcing phases, utilizing the wide-diameter geometry of the flat glass fiber and the filling effect of the nano-talc powder; it uses amino polysiloxane as a synergistic toughening phase, utilizing the flexibility of the Si-O-Si backbone to disperse stress, achieving both reinforcement and toughening effects while significantly reducing warpage.

This invention relates to the field of polymer materials and discloses a modified polypropylene material and its application in HPPM double-wall corrugated pipes. The modified polypropylene material comprises: polypropylene resin, modified graphitic carbon nitride, modified multi-walled carbon nanotubes, and additives. The modified graphitic carbon nitride is prepared by grafting a hindered amine-type bromine-substituted intermediate with amino-modified graphitic carbon nitride. The hindered amine-type bromine-substituted intermediate is prepared by reacting ethyl 2-amino-4-methylthiazolium-5-carboxylate with 1,4-dibromobutane and then undergoing transesterification with 2,2,6,6-tetramethyl-4-piperidinol. The modified multi-walled carbon nanotubes are prepared by grafting acyl chloride multi-walled carbon nanotubes with a cyclotriphosphazene derivative. The cyclotriphosphazene derivative is prepared by reacting 4-imidazolium formaldehyde with p-phenylenediamine, then undergoing substitution with hexachlorocyclotriphosphazene and further addition with DOPO. The modified polypropylene material prepared by this invention possesses good mechanical properties, UV aging resistance, flame retardancy, and antibacterial properties.