135results about How to "Increase flame retardancy" patented technology

A lightweight fiber-reinforced composite material that exhibits excellent flame resistance and mechanical properties and does not emit any halogen gas at combustion; an epoxy resin composition and prepreg suitable for obtaining the above fiber-reinforced composite material; and an integrated molding suitable to electrical/electronic equipment cabinet, in which use is made of the above fiber-reinforced composite material. There is provided an epoxy resin composition for carbon-fiber-reinforced composite material, comprising: [A] epoxy resin, [B] amine curing agent, and [C] phosphorus compound, the component [C] contained in an amount, in terms of concentration of phosphorus atoms, of 0.2 to 15 wt.%.

The invention relates to a halogen-free flame retardant epoxy resin composition and a copper clad plate prepared from the same. The halogen-free flame retardant epoxy resin composition comprises bisphenol A epoxy resin, carboxyl-terminated butadiene acrylonitrile, phosphorous resin, nitrogen fire retardant, amine curing agent, curing accelerator, filler and organic solvent. The copper clad plate prepared from the halogen-free flame retardant epoxy resin composition comprises a halogen-free flame retardant epoxy resin composition layer arranged on one or both surfaces of the laminated plate, and a copper foil pressed on the halogen-free flame retardant epoxy resin composition layer, wherein the laminated plate comprises a plurality of bonded sheets, and the halogen-free flame retardant epoxy resin composition layer is formed by coating the halogen-free flame retardant epoxy resin composition. The halogen-free flame retardant epoxy resin composition provided by the invention has high tracking property. The copper clad plate prepared from the halogen-free flame retardant epoxy resin composition has high CTI (comparative tracking index), good fire resistance and other good overall properties, has good processing characteristics, avoids dried flower dry flowers, cloth mark exposure and defects, and is suitable for fabricating single-sided or double-sided printed circuit boards withmanufacturing requirement on CTI larger than or equal to 400 V.

The invention discloses a phosphorus-containing Schiff base structured flame retardant and a preparation method thereof. The phosphorus-containing Schiff base structured flame retardant consists of hyperbranched macromolecules; a hyperbranched repeat unit is shown in the formula (I) as shown in the specification; in the formula, R1 is a phosphorus-containing structure, and R2 is a trifunctional structure; the molecular weight of the flame retardant is 500-100000. The flame retardant disclosed by the invention consists of hyperbranched macromolecules and is relatively large in molecular weight; when the flame retardant is used in polyurethane foams, the carbon residue amount of polyurethane can be greatly increased; the flame retardant disclosed by the invention is free of halogen and is a green and environment-friendly flame retardant; the flame retardant contains substances of a Schiff base structure, and due to existence of a C=N structure, very important chemical and biological significances can be achieved due to lone pair electrons on N atoms.

The invention relates to a halogen-free flame-retardant epoxy resin composition, and an adhesive film and a copper-clad plate prepared from same. The halogen-free flame-retardant epoxy resin composition comprises bisphenol A type epoxy resin, carboxylic group terminated butylnitrile rubber, phosphorus-containing resin, nitrogen flame retardants, amine curing agents, a curing accelerator, a fillerand an organic solvent. The adhesive film prepared from the halogen-free flame-retardant epoxy resin composition comprises a release film and the halogen-free flame-retardant epoxy resin composition coated on the release film. The copper-clad plate prepared from the halogen-free flame-retardant epoxy resin composition comprises a laminated sheet, an adhesive film clad on one side or two sides of the laminated sheet, and a copper foil pressed and clad on the adhesive film, wherein the laminated sheet comprises a plurality of glued bonding sheets; and the adhesive film comprises a release film and the halogen-free flame-retardant epoxy resin composition coated on the release film. The halogen-free flame-retardant epoxy resin composition has a high creepage tracking characteristic and good comprehensive performance such as flame retardancy and the like.

The invention provides fire retardant coating for an underground coal seam of a coal mine, comprising the following compositions in parts by weight: 74 to 140 parts of powder materials, and 15 to 56 parts of polymer emulsion. The powder materials comprise the following compositions in parts by weight: 30 to 50 parts of high quality cement, 7 to 10 parts of expanded perlite, 5 to 10 parts of expanded vermiculite, 10 to 25 parts of quartz sands, 10 to 15 parts of graphite powder, 0 to 10 parts of coal ash, 10 to 15 parts of aluminum hydroxide, and 2 to 5 parts of magnesium hydroxide. The method for preparing the fire retardant coating comprises the following steps: uniformly mixing the power materials in proportion, and packaging the materials independently; mixing the polymer emulsion with water, and adding the powder material in the mixture in a proportion of the polymer emulsion, the water and the powder materials to be 0.2-0.4:0.15-0.55:1; and uniformly mixing the mixture by a mortar mixer. The coating has the advantages of fire proofing, static resistance, good caking property with coal, good water resistance, good elasticity, non toxicity, easy construction, low cost and the like.

The invention discloses a chlorinated polyethylene flame-retardant sheath material compound. The flame-retardant sheath material compound comprises compositions with the following weight portions: 100 portions of chlorinated polyethylene, 5 to 8 portions of rare earth complex stabilizer REC-LS, 25 to 30 portions of high-performance complex flame retardant HZR-2, 3 to 5 portions of thiadiazole derivative curing agent, and 1.5 to 2 portions of aldehyde-amine condensate accelerant. A cable obtained by the invention has more comprehensive performance, good mechanical property, ozone-resistant and chemical-resistant performance, flame resistance and oil resistance, high temperature-resistant class, and free color matching.

The invention relates to a zero-halogen flame-retardant epoxy resin compound as well as a bonding sheet and a copper clad laminate manufactured by using the zero-halogen flame-retardant epoxy resin compound. The resin compound consists of a compound and a solvent; the compound includes: bisphenol F-shaped benzoxazole, a phenolic resin and fittings. The copper clad laminate manufactured by using the resin compound includes a laminate and tinsel coated on one side or two sides of the laminate; the laminate includes a plurality of bonding sheets which are mutually bonded; the bonding sheets are manufactured by adopting the zero-halogen flame-retardant epoxy resin compound. The resin compound does not contain the halogen and has excellent flame-retardant performance; the bonding sheets and the copper clad laminate manufactured by using the resin compound have the advantages of high heat-resistance, high reliability, hard flaming performance, low water absorption rate and low heat expansion coefficient as well as excellent processing performance.

The invention discloses provides a flexible copper-clad plate with higher heat resistance, inflammability, electric insulating property, attractive appearance and radiation protection, which comprises an adhesive layer, a polyimide substrate and a copper foil layer, wherein the adhesive layer comprises the following component in part by weight: 30 to 40 parts of solvent type epoxy resin, 10 to 20 parts of solvent type epoxy flexibilizer, 6 to 25 parts of halogen-free flame retardant, 1 to 3 parts of radiation protection agent, 1 to 3 parts of additive and 20 to 40 parts of solvent I; the solvent type epoxy resin is obtained by completely dissolving the halogen-free epoxy resin and a solvent II according to the mass ratio of 100 : (50 to 200), and the solvent type epoxy flexibilizer is obtained by completely dissolving the epoxy flexibilizer and a solvent III according to the mass ratio of 100 : (250 to 700).

The invention discloses a halogen-free epoxy adhesive for a PET protective film or an insulation layer, which is prepared from the following raw materials in part by mass: halogen-free epoxy resin of 30 to 50, solvent of 20 to 60, flexibilizer of 20 to 35, flame retardant of 10 to 30, curing agent of 1 to 5 and promoter of 0.01 to 0.1. A preparation method of the halogen-free epoxy adhesive comprises the following steps of: adding the halogen-free epoxy resin and the solvent into a container according to a mass ratio of 100: 50, stirring till the mixed materials are dissolved completely and recoding the obtained product as a component A; adding the flexibilizer and the solvent into the container according to a mass ratio of 100: 100, stirring till the mixed materials are dissolved completely and recoding the obtained product as a component B; and mixing the component A, the component B, the flame retardant, the curing agent and the promoter according to a mass ratio of (45-60): (40-70): (10-30): (1-5): (0.01-0.1) and uniformly stirring the mixture to obtain the halogen-free epoxy adhesive. Tests show that the halogen-free epoxy adhesive has the heat-resistance temperature of 288 DEG C and the flame-resistance grade of UL94VTM-0 and meets the application requirements of flexible printed circuit (FPC) and flexible flat cable (FFC) terminals on heat resistance, insulation and flame resistance.

The present invention relates to one kind of thermosetting resin composition containing at least one kind of titanium compound-polymer composition serving as the stuffing. The thermosetting resin composition may be used in sealing electromechanical parts, electronic assembly, semiconductor, etc. It has improved fire retarding performance, heat resistance, excellent forming performance and high reliability.

The invention provides a flame-retardant inorganic interior wall coating and a preparation method thereof. The coating is prepared by mixing the following components comprising, by weight, 250-315 parts of deionized water, 3-5 parts of hydroxyethyl cellulose, 0.5-2 parts of bentonite, 3-8 parts of a stabilizer, 1-5 parts of a defoaming agent, 1-2 parts of a preservative, 100-250 parts of magnesiumhydroxide, 90-190 parts of titanium dioxide, 30-80 parts of calcined kaolin, 50-80 parts of 800# heavy calcium carbonate, 150-230 parts of inorganic potassium silicate, 50-100 parts of a styrene-acrylic emulsion and 2-5 parts of a thickener. The paint has the characteristics of flame retardancy, compactness, multicolor, scratch resistance, cracking resistance, dew formation resistance, mildew resistance, stain resistance, easiness in scrubbing and good storage stability.

The invention provides a flame-retardant antibacterial carbonate composition for a switch of a fixed electric apparatus. The flame-retardant antibacterial carbonate composition for the switch of the fixed electric apparatus is characterized by comprising the following raw materials in parts by weight according to proportion: 50-90 parts of polycarbonate, 0.5-10 parts of antibacterial agent, 0.01-10 parts of flame retardant and 0.01-5 parts of flame retardant synergist. Compared with the prior art, the composition provided by the invention not only has a stronger antibacterial activity and a good flame retardancy, but also has good impact resistance and mechanical strength; the composition is more suitable for thin-walled switches of the fixed electric apparatuses for home uses and similar applications and the composition is safe and antibacterial. Meanwhile, the composition provided by the invention has the advantages of simple product processing technology and wider application range, and satisfies the general trend of the social development.

The present invention is less-glossy easy-to-machine thermoplastic resin composition and its extruding processing method. The thermoplastic resin composition is the mixture of PVC 10-80 weight portions, ABS resin 0-88 weight portions, ABS grafted copolymer 1-35 weight portions, styrene-acrylonitrile-ethylene copolymer 0-55 weight portions, acrylonitrile gel 1-10 weight portions and fluoroelastomer as machining assistant 0-5 weight portions, and has total rubber content of 5-30 wt%. The thermoplastic resin composition has excellent extruding formation performance, oil resistance and antishock performance as well as high rigidity, heat resistance, weather resistance, fireproof performance and economic performance.

The invention discloses a flame-retardant decorative veneer and a manufacturing method thereof. The flame-retardant decorative veneer is composed of a veneer layer, an adhesive layer and a base material layer. After flame-retardant processing, a precious natural veneer plain plate is compounded with flexible reinforced base materials, so that the flame-retardant flexible compound decorative veneer is manufactured, natural texture of the precious veneer is maintained, and good decoration and flame retarding performance is achieved. The manufactured flame-retardant decorative veneer is high in strength and good in toughness, and can be used as a decoration material for plane walls, curved walls and ceilings; after hot pressing, a PES adhesive film forms a layer of thin film between the veneer and the reinforced materials, a good water blocking performance is achieved, and the veneer is prevented from going mouldy and changing colors after being affected with damp.

The invention discloses a warm-mixing environmental-protection inorganic flame retardant for tunnel road surfaces. The flame retardant is prepared by mixed ball milling of the following raw materials by the weight percentage: 53%-55% of aluminum hydroxide, 18%-20% of magnesium hydroxide, 19%-24% of zeolite, 2%-3% of nano TiO2, and 2%-3% of a tourmaline powder. The warm-mixing environmental-protection inorganic flame retardant is applied in tunnel road surface asphalt thus can improve the fire protection ability of an asphalt mixture, allows the asphalt mixture to have good flame retardation, also can reduce the mixing temperature of the asphalt mixture, and achieve purposes of energy conservation and emission reduction; and in addition, the flame retardant also has the function of reducing the car tail gas concentration inside tunnels, and is quite beneficial for improving the driving environment inside the tunnels.

The invention discloses a vitrified micro bubble thermal mortar aggregate and a preparation method thereof, and belongs to the field of thermal mortar aggregate construction and fabrication methods. The aggregate consists of aggregate particles, wherein each aggregate particle consists of a core layer and a wrapping layer; the core layers are polyphenyl particles of which the surfaces are subjected to high-temperature modification treatment; the wrapping layers are expanded and vitrified micro bubble thermal mortar; and the expanded and vitrified micro bubble thermal mortar is formed by uniformly mixing raw materials in parts by weight as follows: 25-30 parts of expanded and vitrified micro bubble, 40-48 parts of 325 cement, 15-20 parts of fly ash, 0.2-0.3 parts of PP (polyester) fiber, 0.2-0.3 parts of wood fiber, and 0.5-0.6 parts of emulsion powder. The aggregate is a novel thermal and heat insulated material which is good in flame retardancy, good in water resistance, high in durability, high-temperature resistant, nontoxic, and tasteless, and does not vitalize harmful substances.