46results about How to "Maintain flame retardancy" patented technology

The invention discloses an oil-proof anti-static polyvinyl chloride pipe. The polyvinyl chloride pipe comprises the following raw materials in part by weight: 100 parts of polyvinyl chloride, 10-30 parts of chloride polyethylene, 1-10 parts of ethylene-propylene-diene monomer, 1-3.5 parts of zinc oxide modified graphene oxide, 2-10 parts of zinc borate, 3-10 parts of aluminium hydroxide, 2-5 parts of coupling agent modified diatomite, 0.5-1.5 parts of antimony pent(iso-octyl thioglycollate), 1-2.5 parts of N-isopropyl-N'-phenyl p-phenylenediamine, 1-3 parts of calcium stearate, 1-2.5 parts of lanthanum stearate, 1-5 parts of epoxy soybean oil, 5-10 parts of polyethylene wax, 5-15 parts of poly-4-methyl-1-pentene, 0.5-2 parts of trioctyl trimellitate, and 1-5 parts of 2,4-bis(1,1-dimethylethyl)-pheno phosphite. The oil-proof anti-static polyvinyl chloride pipe disclosed by the invention has excellent oil resistance and static resistance, and is low in cost and good in processing property.

To provide high energy density, good cycle properties and rate characteristics and long-term safety of a lithium ion battery containing at least an ionic liquid and a lithium salt. The above problems are solved by suppressing reduction and decomposition of the ionic liquid on an anode by using a graphite coated with an amorphous carbon or onto which an amorphous carbon is deposited as an anode active material.

The invention discloses an aging-resistant PPO-PPS plastic alloy, which is composed of the following components in weight part: 100 parts of PPO, 40-60 parts of PPS, 4-8 parts of compatibilizer and 0.5-1.5 parts of age resister. The aging-resistant PPO-PPS plastic alloy disclosed by the invention is an alloy material with excellent overall performances, mostly retains the advantages of PPS in respects of mechanical property, thermal tolerance, flame retardance and the like, and integrates excellent electrical performances of PPO. The aging-resistant PPO-PPS plastic alloy is suitable for fields of electric appliances such as thermotolerant breaker frameworks and electric appliance connectors.

The present invention provides a polypropylene resin composition including a polypropylene resin having a melt flow rate of 4-18 g / 10 minutes, a flame retardant additive having a low melting point, an antimony oxide, a UV stabilizer, a silane coupling agent, and titanium dioxide as a light-blocking agent. The resin composition of the invention produces products exhibiting excellent flame retarding properties, stability against weather, and maintainability of physical / mechanical properties as shown by maintaining the original flame retarding properties after long periods of outdoor exposure and hydrothermal dipping treatments.

A resin composition containing a cyclic epoxy-modified silicone compound (A) represented by formula (1), a cyanic acid ester compound (B) and / or a phenol resin (C) and an inorganic filler (D):wherein Ra each independently represent an organic group having an epoxy group; Rb each independently represent a substituted or unsubstituted monovalent hydrocarbon group; x represents an integer of 0 to 2; and y represents an integer of 1 to 6; and the siloxane unit marked with x and the siloxane unit marked with y are arranged mutually at random.

The invention discloses a preparation method of a montmorillonite modified nano aluminum hydroxide composite inorganic flame retardant. The composite inorganic flame retardant is prepared from anionicmontmorillonite and nano aluminum hydroxide, wherein the equivalent diameter of nano aluminum hydroxide particles is 5-30 nm, and the equivalent diameter of the anionic montmorillonite is 0.5-2 microns. The method comprises the following steps: (1) preparation of the anionic montmorillonite; and (2) preparation of the nano aluminum hydroxide. According to the invention, the flame-retardant effectof aluminum hydroxide is maintained, and meanwhile, flame retardancy, heat resistance, reinforcing performance and gas-heat blocking of montmorillonite are utilized, so that the carbon-forming effectin a combustion process of the high-molecular material is promoted, and flame retardancy of the high-molecular material is better improved. The using amount of aluminum hydroxide is reduced, and meanwhile, the comprehensive mechanical property of the high-molecular material is improved, so that great significance is achieved for development of flame-retardant applications of aluminum hydroxide.

An exposed post-wire distribution type electric welding pipe fitting comprises a pipe body, electric heating wires arranged on the inner wall of the pipe body as well as observation holes and terminals which are exposed out of the pipe body and located at two ends of the pipe body, binding posts are arranged in the terminals and connected with the electric heating wires, non-closed wire embeddinggrooves are axially formed in the pipe body, and the electric heating wires are clamped in the wire embedding grooves. The pipe fitting is prepared from raw materials in parts by weight as follows: 90-120 parts of a PE100 grade raw material, 30-45 parts of PE high-pressure reclaimed material, 2-4 parts of an antioxidant, 1.5-3 parts of a dispersant, 5-10 parts of mullite powder, 3-10 parts of glass beads, 10-25 parts of EPDM (ethylene-propylene-diene monomer) rubber, 10-15 parts of modified diatomite, 20-35 parts of a heat stabilizer, 20-30 parts of a heat-resistant modifier, 0.5-1.5 parts ofEVA wax, 4-6 parts of dicumyl peroxide, 0.02-0.2 parts of a crosslinking agent TAIC, 2-3 parts of full-vulcanized superfine powder nitrile rubber, 0.5-1.5 parts of full-vulcanized superfine powder natural rubber, 5-10 parts of a halogen-free flame retardant and 1-5 parts of a colorant.

The invention provides a polyamide-modified melamine-formaldehyde precondensate, which belongs to the technical field of melamine-formaldehyde foam materials. The precondensed polymer is prepared by adjusting the pH value of the paraformaldehyde solution and then adding melamine, polyamide and modifier, monitoring the reaction process at the cloud point, stopping heating and cooling down rapidly after reaching the corresponding cloud point. The present invention also provides a polyamide-modified melamine-formaldehyde foam material, comprising 100 parts of polyamide-modified melamine-formaldehyde precondensate, 0.5-10 parts of surfactant, 2-15 parts of catalyst, and foaming 2-20 parts of agent, 0-5 parts of auxiliary agent and 0-30 parts of water. The invention uses polyamide to modify the melamine-formaldehyde foam material, which not only maintains the flame retardancy and thermal stability of the material, but also improves the tear toughness of the melamine-formaldehyde foam. The modification of the melamine-formaldehyde resin polycondensate by polyamide can improve the fluidity of the melamine-formaldehyde resin precondensate and reduce the difficulty of industrial production.

The invention discloses an aging-resistant PPO-PPS plastic alloy, which is composed of the following components in weight part: 100 parts of PPO, 40-60 parts of PPS, 4-8 parts of compatibilizer and 0.5-1.5 parts of age resister. The aging-resistant PPO-PPS plastic alloy disclosed by the invention is an alloy material with excellent overall performances, mostly retains the advantages of PPS in respects of mechanical property, thermal tolerance, flame retardance and the like, and integrates excellent electrical performances of PPO. The aging-resistant PPO-PPS plastic alloy is suitable for fields of electric appliances such as thermotolerant breaker frameworks and electric appliance connectors.

The invention provides a colored PEN / PET concentric sheath-core composite fiber. The sheath layer comprises a colored master batch and PEN, wherein the weight ratio of the colored master batch to the PEN is 5-15:95-85, and the colored master batch comprises colored powder and PEN, and the weight ratio of the colored powder to the PEN is 25-35:75-65. The core layer comprises PET. The weight ratio of the sheath layer components to the core layer component is 15-25:85-75. The defect that PEN fiber forming and dyeing are difficult is overcome, and the fiber keeps the unique chemical stability, gas barrier property, flame retardance, heat resistance and the like of the PEN fiber. The PET economical efficiency and favorable PEN fiber properties are organically combined, the PEN using cost is greatly reduced, the application range of the PEN in the fiber field is enlarged, and meanwhile the application range of the PET fiber in the industrial field can be broadened further.

The invention relates to a rapidly-formed halogen-free flame-retardant PA6 composite material and a preparation method thereof. The rapidly-formed halogen-free flame-retardant PA6 composite material comprises the following raw materials in percentage by mass: 65-80% of PA6 resin; 15-25% of a phosphorus-nitrogen composite flame retardant; 3-5% of a synergistic flame retardant; 0.5-2% of a nucleating agent; 0.5 to 1% of an antioxidant; and 1-2% of a lubricant. The prepared rapid prototyping halogen-free flame-retardant PA6 composite material does not contain halogen, meets the green and environment-friendly requirements, has the characteristics of rapid prototyping, shortening of the injection molding period and the like, is especially suitable for injection molding of thin-wall plastic products, effectively shortens the molding period during injection molding of the material, and improves the production efficiency. Meanwhile, the physical property and the flame retardant property of the material are kept.