183results about How to "Meet flame retardant requirements" patented technology

The invention provides a blow molding type halogen-free flame-retardant polypropylene material, which comprises the following components in part by weight: 100 parts of polypropylene, 40 to 85 parts of phosphorus-nitrogen series expanded halogen-free composite flame retardant, 3 to 20 parts of resin modifier, 0.05 to 0.5 part of pigment, 0.4 to 2.0 parts of antioxidant, 0.3 to 2.0 parts of ultraviolet absorbent, 0.3 to 2.0 parts of light stabilizer, and 1.0 to 3.0 parts of other processing aids. The material has good tensile strength, high impact strength, good low-temperature performance and excellent flame-retardant performance, and is particularly suitable for hollow blow molding type small and large components of automobiles, furniture and the like.

The invention discloses a halogen-free flame-retardant and cold-resistant PC/ABS (Poly Carbonate/Acrylonitrile Butadiene Styrene) material and a preparation method thereof. The halogen-free flame-retardant and cold-resistant PC/ABS material mainly comprises components of PC and ABS and further comprises a silicon fire retardant, a phosphorus fire retardant, an anti-dripping agent, a compatilizer, a flexibilizer, a lubricant, an antioxidant, and an anti-ultraviolet agent. A preparation process is a twin-screw melting extrusion pelletizing process. According to the preparation method disclosed by the invention, the silicon fire retardant and the phosphorus fire retardant are composited so that the fire resistance 1.2 mm of the obtained PC-ABS alloy material can meet the UL94V-0 class requirement in the United States. The compatilizer MBS (Methyl methacrylate-Butadiene-Styrene) not only enables the PC and the ABS to be better dissolved but also can be used for increasing the compatibility between the silicon fire retardant and a substrate. Therefore, not only can the impact property of the alloy be improved but also the flame retardant efficiency can be effectively improved. The alloy material has the good low-temperature impact property due to the flexibilizer. The silicon fire retardant has a fire retardant synergy effect and further has a smoke suppression effect, so that the fire resistance 1.2 mm of the obtained PC-ABS alloy material can meet the UL94V-0 class requirement in the United States.

The invention discloses a halogen-free flame retardant plastic geotechnical grille master batch for a mine, which consists of polyolefine, special carbon black, composite flame retardants, compatilizer, modified nanometer reinforcing materials, processing auxiliary agents and antioxidizer according to a certain proportioning ratio, wherein the composite flame retardants are compounds of nanometer inorganic flame retardants, micro-capsulated red phosphorus and phosphoric acid ester flame retardants. When the master batch prepared by the method is added in grilles, the performance is stable, the flame retardant performance is good, and the environment protection effect is good.

The invention discloses a phosphorus-containing halogen-free flame-retardant polylactic acid, which is obtained by leading phosphorus element with flame retardant function into a molecular backbone through a chain extending method or a coupling method. The phosphorus content of the polylactic acid is between 0.1 and 5 weight percent, and the vertical combustion level of the polylactic acid is V-0. The invention also discloses a method for preparing the halogen-free flame-retardant polylactic acid, and a flame retardant material formed by blending the phosphorus-containing halogen-free flame-retardant polylactic acid with common industrial polylactic acid. The phosphorus-containing flame-retardant polylactic acid provided by the invention leads flame-retardant element into the molecular backbone of the polylactic acid through chain extending or coupling reaction, thereby improving the molecular weight of the polylactic acid, endowing a polylactic acid body and the blended flame retardant material with good flame retardant property and overcoming the disadvantages of poor compatibility, precipitation easiness and the like caused by the application of additive flame retardant. In addition, as no halogen component is contained, no halogen-containing gas can be released during application, thereby particularly preventing the release of harmful gas from polluting environment and harming human bodies during combustion.

A process for preparing the composite polymer-nano magnesium hydroxide microspheres includes sphericizing the magnesium hydroxide nanoparticles by use of polymer monomer, cross-linking agent and trigger, and the simulative emulsion polymerizing method and spray drying. Its advantages are high product performance in coated rate, quality, flame retarding, compatibility, etc.

Relating to an all plastic wood-like material and its preparation method, the invention provides a flame retardant micro-foamed all plastic wood-like material and its preparation method. The all plastic wood-like material comprises: 100 of polystyrene, 20-40 of high impact polystyrene, 10-15 of resin, 2-5 of an inorganic filling material, 15-25 of fire retardants, 5-15 of a smoke suppressant, 0.5-1.5 of foaming agents, 0.5-2 of a cell regulator, 0.5-2 of a colouring agent and 1.5-3 of auxiliary agents. The method consists of: mixing the auxiliary agents, the colouring agent, the fire retardants, the smoke suppressant, the foaming agents and the cell regulator according to the ratio so as to obtain a mixture A; drying the resin and the inorganic filling material; mixing polystyrene, high impact polystyrene, resin and the inorganic filling material, as well as the mixture A, thus obtaining a mixture B; subjecting the mixture B to granulation, and molding the obtained particles, thus obtaining the halogen-free and flame retardant micro-foamed all plastic wood-like material.

The invention discloses a method for preparing a halogen-free high-efficiency flame retardant aryloxy cyclotriphosphazene compound. The flame retardant is a pure white crystal product prepared by reacting sodium phenate and hexachlorocyclotriphosphazene serving as raw materials with dioxane serving as a solvent under heating and stirring, filtering and purifying. The preparation method of the flame retardant overcomes the defects of long reaction time, a yellow product color and high production cost existing in the conventional synthesis method commonly. The prepared flame retardant has the characteristics of high efficiency, no halogen, flame retardance, no toxicity, low smoke and the like, has high compatibility with most of organic polymer materials, and has processing stability and using stability.

The invention discloses a halogen-free epoxy resin composition, and a prepreg and copper foil clad laminated board prepared from the same. The epoxy resin composition comprises the following components: (A) halogen-free epoxy resin; (B) styrene-maleic anhydride copolymer (SMA) used as a first curing agent; and (C) phosphorus-containing compound used as a second curing agent. The prepreg and copper foil clad laminated board prepared from the halogen-free epoxy resin composition have the advantages of favorable dielectric properties, favorable processability, simple technological operation and favorable moisture and heat resistance.

The invention discloses a synthetic method of efficient flame-retardant epoxy vinyl ester resin. Biophenol A diglycidyl ether, brominated epoxy resin, a polymerization inhibitor, a catalyst and an antioxidant are sequentially added to a reaction kettle, the reaction temperature slowly rises to 50 DEG C, chain extension binary acids/anhydrides are added in small quantities in batches, the mixture is heated to the temperature of 75-85 DEG C, the temperature is kept for 2 h, and the reaction acid value is decreased to be lower than 2; (3) unsaturated monoacid is dropwise added to the reaction kettle at the dropping speed of 50 ml/h, the reaction temperature change condition is observed, and congelation caused by excessively fast temperature rises is avoided; after addition, the mixture is slowly heated to the temperature of 110-115 DEG C, and the temperature is kept for 4-5 h until the acid value is decreased to be lower than 15; (4) the mixture is diluted with a crosslinking agent and fully stirred, then a flame-retardant aid is added, after the material temperature is decreased to be lower than 45 DEG C, stirring is stopped, cooling water is turned off, and package is performed. By means of the method, the best flame-retardant effect can be realized and the flame-retardant requirement in certain special fields can be met.

The invention discloses a preparation method of a halogen-free composite flame retardant polypropylene/thermoplastic polyurethane elastomer composite material. The method mainly consists of: A. mixing 80 parts by weight of polypropylene, 20 parts by weight of a thermoplastic polyurethane elastomer, 3 parts by weight of dry polypropylene grafted maleic anhydride and 0.2 part by weight of an antioxidant fully, then employing a double-screw extruder to perform mixing and granulating, and conducting drying to obtain a modified polypropylene masterbatch; B. then fully mixing 100 parts by weight of modified polypropylene masterbatches, 6.7-15 parts by weight of modified expandable graphite, and 4-13.3 parts by weight of red phosphorus flame retardant masterbatches to obtain a mixture; and then subjecting the mixture to mixing and granulating by the double-screw extruder, drying the extruded granules, and then carrying out injection molding by an injection molding machine, thus obtaining the halogen-free composite flame retardant polypropylene/thermoplastic polyurethane elastomer composite material. The flame retardant polypropylene/thermoplastic polyurethane elastomer composite material prepared by the method has good flame retardance, and the flame retardant level can reach vertical burning UL-94V-0.

The present invention relates to polyurethane conveyer belt for coal mine and its making process. The polyurethane conveyer belt is covered with polyurethane elastomer, which is one polyol oligomer/toluene diisocyanate system or one polyol oligomer/diphenyl alkyl diisocyanate system. The polyurethane has optimized recipe, phosphate fire retardant and/or halogen fire retardant added while synthesis and in the amount accounting for 5-20 wt% of the pre-polymer, and antistatic agent of quaternary ammonium salt type surfactant one conducting carbon black added while casting the covering elastomer.The modified polyurethane elastomer is fire retardant, antistatic, wear resistant and suitable for use in coal mine, and has long service life and capacity of resulting in high conveying efficiency.

The invention relates to an organic silicon pouring sealant, a preparation method and application thereof. The organic silicon pouring sealant comprises a component A and a component B. The preparation method comprises the steps of: respectively preparing the component A and the component B according to the requirement of a formula, cooling to room temperature, during the application, and statically mixing the component A and the component B according to the weight ratio of 1: (1-1.2) for 20-30min to ensure that the component A is uniformly mixed with the component B to obtain the organic silicon pouring sealant. Compared with the prior art, the organic silicon pouring sealant has excellent applicability to various materials without metal corrosion, can achieve insulation, heat conductionand inflaming retarding requirements according to the requirements without damaging electronic components, has better operating performance, is easy to blend, and is suitable for encapsulation production application of a manual or general sealant injection device.

The invention discloses a packaging adhesive tape which is prepared by taking a polyurethane modified chlorinated polypropylene composite as a base material, wherein the polyurethane modified chlorinated polypropylene composite comprises the following raw materials in parts by weight: 100 parts of chlorinated polypropylene, 60-85 parts of a chlorinated polypropylene graft polymer, 12-24 parts of a toughened master batch, 5-20 parts of a halogen-free flame retardant, 0.5-4 parts of a coupling agent, 1-3 parts of an anti-oxidant, 2-4 parts of stearic acid, 1-3 parts of dioctyl phthalate, 0.5-2 parts of ethylene bis stearamide and 0.2-4 parts of polyethylene wax; the composite is formed by conducting graft modification on chlorinated polypropylene through polyurethane and maleic anhydride, and is used for preparing a high-performance high-molecular composite, and the finally obtained composite has relatively high abrasion resistance, weather resistance, impact resistance, corrosion resistance and high-low temperature resistance.

The invention provides a waterproof and flame-retardant paper, and a preparation method and an application thereof, and belongs to the technical field of materials. The waterproof and flame-retardantpaper comprises fibers and assistants; the fibers comprise 70-90 wt% of flame-retardant fibers and 10-30 wt% of plant fibers; and the assistants comprise a wet strength agent and a defoaming agent, the using amount of the wet strength agent is 0.5-1.0% of the mass of the fibers, and the using amount of the defoaming agent is 0.01-0.1% of the mass of the fibers. The waterproof and flame-retardant paper has excellent water absorption, water resistance and flame retardancy, still has excellent flame retardancy after being soaked in water, has the advantage of low cost, and is suitable for being industrially applied.

The invention discloses a low-odor functional talc master batch and a preparation method thereof. The low-odor functional talc master batch comprises the following raw materials (by weight): 78-80 parts of talc powder, 0.8-1 part of a coupling agent, 20-22 parts of a polypropylene monomer, 0.5-0.8 part of a lubricant and 0.2-0.5 part of an antioxidant. The raw materials are wide in source, the preparation process is simple, the prepared finished product is a rigid-tough balance type product after being filled, and the material shrinkage rate and the smell of the whole material can be reduced;the finished product is easy to process, the fluidity and demolding property of plastic processing are promoted to be improved, emission is reduced, and the volatilization amount of VOC is reduced without increasing the cost; the finished product has low atomization performance, the volatile matter content can be effectively reduced, the finished product has a synergistic effect with various flameretardants, the addition amount of the flame retardants can be properly reduced, the flame retardant requirement is met, and the application prospect is wide.

The invention discloses preparation methods of SiO2 nano particle modified expandable graphite and flame retardant polypropylene. The preparation method of the SiO2 nano particle modified expandable graphite comprises the following steps of step 1, adding expandable graphite into an ethanol aqueous solution, performing dispersion to form a suspension, regulating the pH value of the suspension to be 7-9 to obtain an expandable graphite suspension; step 2, slowly dropwise adding tetraethyl orthosilicate into the expandable graphite suspension obtained in the step 1 for reaction; and step 3, performing pumping filtration after reaction is complete, performing washing until a filtrate is neutral, and performing drying to obtain the SiO2 nano particle modified expandable graphite. The preparation method of the flame retardant polypropylene comprises the following steps of adopting polypropylene particles and an SiO2 nano particle modified expandable graphite flame retardant with the mass ratio of 8 to 2, performing melt blending, extruding pelletizing and injection moulding to obtain a halogen-free flame retardant polypropylene composite. The prepared flame retardant polypropylene composite is remarkably improved in flame retardant property, heat stability, carbon formation ability, impact property, tensile strength and the like and has the advantages of no halogen, low smoke, nontoxicity, corrosion resistance and the like.

The invention discloses a synthesis method of improved efficient flame-retardant epoxy ethyl ester resin. Disphenol A epoxy resin is used as a synthesis material, and other synthesis materials includechain extender binary acid containing halogen element, unsaturated monoacid, flame-retardant aid, catalyst, polymerization inhibitor, antioxidant and crosslinking agent. By introducing the reactive chain extender containing flame-retardant element and adding the solvent-type organic phosphate flame-retardant aid for compounding, flame-retardant synergism between the chain extender and the flame-retardant aid is brought into full play to prepare the efficient flame-retardant epoxy ethyl ester resin.

The invention discloses a blended fabric of polysulfonamide and viscose fiber. The blended fabric of polysulfonamide and viscose fiber is formed by blending and weaving 40wt% to 80wt% of polysulfonamide and 20wt% to 60wt% of viscose fiber. The blended fabric of polysulfonamide and viscose fiber has the advantages that the afterflame time, the smoldering time and the damaged length meet the state standards, and the specified flame retardant requirement is met.

The invention discloses a polyvinyl chloride (PVC) impregnating solution for copper bar insulation sheaths, and an impregnation processing technology of the PVC impregnating solution. The PVC impregnating solution is prepared by mixing PVC resin, a stabilizing agent, a flame retardant, a compound plasticizer, a viscosity reducer and filler; after copper bars are impregnated and cured by using thePVC impregnating solution, the PVC copper bar insulation sheaths can be obtained. The PVC copper bar insulation sheaths are excellent in insulating property, high-temperature-resistant, good in flame-retardant property and long in service life.

The invention provides a high-gloss high-heat-resistance high-fluidity halogen-free flame-retardant glass-fiber-reinforced PC material and a preparation method thereof. The material is composed of the components of, by weight, 50-80 parts of polycarbonate, 0-15 parts of an inorganic flame retardant, 1-6 parts of halogen-free flame retardant masterbatch, 3-10 parts of a compatibilizing agent, 0.2-3 parts of a lubricant, 0.1-0.4 parts of an antioxidant, 0.1-0.3 parts of an anti-dripping agent, 5-30 parts of glass fiber, and 0.2-1 parts of other auxiliary agents. According to the preparation method, dried PC, the compatibilizing agent and the auxiliary agents are mixed in a high-speed mixer according to a certain ratio; when the materials are uniformly mixed, the mixture is added into a twin-screw extruder, and is subjected to kneading and extrusion with continuously inputted glass fiber. According to the invention, the requirements on high-efficiency halogen-free flame retarding property and environment friendliness are realized. Under a specific process environment, the product has relatively high gloss, and can be widely applied in home appliances, LCD televisions and tablet computers.

The invention relates to the technical field of printed circuit boards and particularly relates to a resin composition. The resin composition is prepared from, by weight, 20-25 parts of phosphoric epoxy resin, 10-15 parts of brominated epoxy resin, 10-20 parts of cycloaliphatic epoxy resin, 25-30 parts of anhydride, 10-15 parts of phosphorus-containing phenolic aldehyde and 5-15 parts of phenolic aldehyde, wherein the epoxide equivalent range of the cycloaliphatic epoxy resin is 100-200 g/eq. According to the resin composition, the cycloaliphatic epoxy resin is introduced to an ordinary epoxy resin system and solidified with anhydride, and excellent electric leakage and tracking resistance and heat-resisting performance can be obtained; meanwhile, the system reaches the inflaming retarding requirement through a bromine and phosphorus cooperative mode, a small amount of boehmite filler which is better in heat resistance is introduced, aluminium hydroxide filler is not needed, and the defect of adding a great amount of filler is avoided; the invention further relates to a copper-clad plate and a PCB made of the resin composition, the CTI is larger than or equal to 600 V, heat resistance is good, alkali resistance is excellent, and the inflaming retarding requirement is reached.