38results about How to "Does not affect flame retardancy" patented technology

The invention discloses a preparation method of a dialkylphosphinate metal salt. The preparation method comprises the following steps: a) adding a coupling agent into a water solution of dialkyl phosphinic acid and/or a dialkylphosphinate alkali metal salt to get the water solution of dialkyl phosphinic acid and/or the dialkylphosphinate alkali metal salt containing the coupling agent; and b) adding the coupling agent or not adding the coupling agent into a mixture of a metal compound and water, and further reacting with the water solution of dialkyl phosphinic acid and/or the dialkylphosphinate alkali metal salt containing the coupling agent to generate the dialkylphosphinate metal salt. The dialkylphosphinate metal salt obtained by the preparation method disclosed by the invention has small particle size and good flowability; and furthermore, when the particle size is less than 90 mu m, in particular to 40 mu m, the tap density can still above 600g/L, and the problems that such flame retardants are easy to raise dust during the feeding process and less prone to uniformly mixing with resin can be well solved. The preparation method disclosed by the invention has the advantages of simple process and convenience in operation, and the coupling agent is low in price and easy to obtain; and simultaneously, production equipment is simplified and production cost is reduced.

The invention belongs to the technical field of textile printing and dyeing, and particularly relates to a method for printing multi-component intrinsic flame-retardant fabric. The method comprises the following steps: selecting and matching cloth, pretreating the fabric, performing rotary screen printing, steaming at high temperature, rapidly performing wet steaming, oxidizing, soaping, performing softening and color fixing, and performing steam sanforizing. The invention provides the printing technology and method which can realize clear colorizing points, full color and high printing fastness of multi-component intrinsic flame-retardant printed fabric, do not influence the flame retardance, do not damage flame-retardant fibers, and do not influence the strength; the industrial production and application of the multi-component intrinsic flame-retardant printed fabric are realized; indeed, the multi-component intrinsic flame-retardant printed fabric is popularized and applied.

The invention discloses a modified phenolic aldehyde insulation foamed material preparation method, which belongs to the foamed material field. According to the invention, an organic-inorganic nanocomposite is taken as a modifier, the modifier, a surfactant, a foaming agent and an acidic curing agent are added in phenolic resin, the resulting mixture is dumped in a die, mechanically stirred, and foamed at certain temperature to obtain the modified phenolic aldehyde insulation foamed material. According to the invention, agglomeration problem of the inorganic nano modifier can be effectively overcome, the compatibility of the inorganic nano particle and organic resin can be increased, the mechanical strength of phenolic aldehyde cystosepiment is effectively enhanced, and the technical problems of high toughness and efflorescence degree of the traditional phenolic aldehyde cystosepiment can be solved, the density of prepared phenolic aldehyde foamed material is moderate, and the phenolic aldehyde foamed material has characteristics of good flame resistance and toughness, and low efflorescence degree.

The invention belongs to the technical field of plastic modification and particularly relates to a halogen-free flame-retardant PC (polycarbonate)/GF (glass fiber) composite material for a housing of an electric meter and a preparation method thereof. The material comprises the following components in percentage by weight: 75-90% of PC, 8%-15% of glass fiber, 2%-4% of toughening agent, 0.3%-0.5% of coupling agent, 0.1%-0.3% of antioxidant, 1%-3% of halogen-free flame retardant, 0.1%-0.4% of anti-dropping agent and 0.8%-1.2% of composite floating fiber removing agent. The preparation method comprises the steps of mixing, extruding and granulating. The material provided by the invention can improve the performance-price ratio and safety of a product, and can be widely used on housings of electric meters.

The invention provides an aerogel heat insulation sheet which comprises an aerogel layer and a glue layer coating the outer surface of the aerogel layer; the glue layer covers the whole outer surfaceof the aerogel layer and is prepared from the following raw material components in part by weight: 0.03-1.5 parts of carbon powder, 0.5-5 parts of glass fiber powder, 0.2-5 parts of a flame retardantand 4-35 parts of a structural adhesive. The aerogel heat insulation sheet provided by the invention has the benefits that as the glue layer covers the whole outer surface of the aerogel layer, powderon the surface of an aerogel material is fixed in the glue layer, so that the problem of falling-off of the powder on the surface of the aerogel material is solved. Therefore, the aerogel heat insulation sheet can be applied to the automobile field, and is used as a heat insulation material for an automobile battery, and the problems of pollution and damage to an automobile product due to powderdrop of the aerogel material are effectively solved.

The invention provides a soft environment-friendly polyolefin cable material prepared from the following raw materials in parts by weight: 20-30 parts of a PE resin powder, 40-50 parts of EVA, 10-15 parts of a POE elastomer, 4-5 parts of ACR resin, 20-30 parts of magnesium hydroxide, 20-30 parts of aluminum hydroxide, 10-20 parts of a talcum powder, 4-5 parts of molybdenum trioxide, 2-3 parts of iron oxide, 8-10 parts of tributyl citrate, 1-2 parts of an antioxidant 1010, 20-30 parts of triethyl O-acetylcitrate, 1-2 parts of pentaerythritol, 1-2 parts of melamine cyanurate, 1-2 parts of polytetrafluoroethylene, 1-2 parts of stearic acid, 1-2 parts of paraffin, and 8-10 parts of a modified filler. The cable material has high softness degree and excellent mechanical properties, and can meet use in communication cables, weak electric cables and other industries having higher demands on the cable softness degree.

The invention discloses an environment-friendly phenolic foam insulation board and a preparation method thereof. The insulation board is prepared from, by mass, 100 parts of phenol, 180-210 parts of formaldehyde, 1-5 parts of boric acid, 10-20 parts of polyethylene glycol, 10-20 parts of NaOH, 1-2 parts of citric acid, 1-5 parts of polyethylene glycol bis(2,3-epoxypropyl)ether, 5-10 parts of surface active agent, 20-30 parts of curing agent, 20-30 parts of catalyst, 10-20 parts of foaming agent and 10-15 parts of nano-carbon black. The preparation method includes the steps of firstly, mixing boric acid and polyethylene glycol to prepare boric acid ester; secondly, mixing formaldehyde and phenol to prepare phenolic resin; thirdly, mixing the products in the first step and the second step, adding citric acid to adjust the PH value, adding polyethylene glycol bis(2,3-epoxypropyl)ether to be sufficiently stirred and then depressurized and dewatered; fourthly, conducting compound foaming and demolding. The insulation board has the advantages that the toughness of the phenolic foam board can be improved, and the thermal insulation and flame retardance performance can not be influenced.

The invention discloses a halogen-free and low-smoke flame retardant for preparing a polyethylene material. The halogen-free and low-smoke flame retardant is prepared by compounding DMMP (Dimethyl Methyl Phosphonate), Mg(OH)2 (available in the market) modified by sodium stearate, 2,3-dimethyl-2,3-diphenylbutane, palygorskite clay and zinc tetraphenylporphyrin. In the polyethylene material prepared by utilizing the halogen-free and low-smoke flame retardant, the oxygen index is not lower than 32, the smoke density under a flameless condition is not higher than 75, the tensile strength is not lower than 12MPa, and the elongation at break is not lower than 180 percent, so that the polyethylene material is a modified halogen-free, low-smoke and anti-flaming polyethylene composite material with a very good performance and can be widely applied to the fields of electric wires and cables, buildings and the like. The flame resistance of the polyethylene material cannot be affected after the polyethylene material is subjected to conventional irradiation cross-linking if cross-linking treatment needs to be carried out on a prepared product, and the mechanical performance of the polyethylene material can be further increased.

The invention relates to a method for improving the water permeability resistance of an outer layer of fire protective clothing and recovering the original appearance of the outer layer of the fire protective clothing. According to the method, strong glue spray processing, lustering wax spray processing and first time waterproof spray processing are carried out on the outer layer of the fire protective clothing, the processed outer layer of the fire protective clothing maintains high surficial humidity resistance (spray rating is larger than or equal to four), higher water permeability resistance is provided (hydrostatic pressure reaches 5-8kPa), the icing resistance capacity is improved, and working efficiency of firefighters under low-temperature environment in cold region is guaranteed. Cleaning agent processing is carried out on the outer layer of the fire protective clothing by using the method continuously to remove sprayed glue, sprayed wax and sprayed agents effectively, finally second time waterproof spray processing is carried out to recover the surficial humidity resistance of the fire protective clothing, the original appearance of the fire protective clothing is recovered thereby, and normal use of the fire protective clothing by the firefighters under non-low-temperature environments can be guaranteed.

The invention discloses a high-toughness laser direct structuring glass fiber reinforced polyphenylene sulfide composite material and a preparation method thereof, and belongs to the field of modified plastics. The high-toughness laser direct structuring glass fiber reinforced polyphenylene sulfide composite material is prepared from the following components in parts by weight: 40 to 60 parts of polyphenylene sulfide, 5 to 15 parts of phenolphthalein-based polyether ketone, 20 to 40 parts of glass fiber, 5 to 15 parts of mineral filler, 0.1 to 0.3 part of a high-temperature lubricating agent, 6 to 10 parts of a laser activating agent, 0.1 to 0.3 part of a metal deactivator and 0.2 to 1 part of a dispersing agent. The invention further discloses a preparation method. Compared with similar products, the high-toughness laser direct structuring glass fiber reinforced polyphenylene sulfide composite material disclosed by the invention has higher impact strength and flame retardant effect, a wide laser processing window and strong coating binding force.

The invention provides a high-voltage resistant cable sheath material which contains the following raw materials: 70-80 parts of metallocene polyethylene, 6-12 parts of polymethacrylate resins, 12-18parts of ethylene-vinyl acetate copolymers, 1-3 parts of expanded graphite, 4-8 parts of paraffin, 8-16 parts of a plasticizer, 2-6 parts of a lubricating agent, 8-16 parts of carbon black, 0.2-0.6 part of thiopropyl dilauryl ester, 3-6 parts of magnesium hydroxide, 2-5 parts of a heat stabilizer and 25-35 parts of modified fillers. The preparation method comprises the following steps: adding theplasticizer, magnesium hydroxide, thiopropyl dilauryl ester and modified fillers into a three-roll grinder to be ground into slurry; and kneading the slurry and the rest raw materials, and performingtwin-screw extrusion granulation. The high-voltage resistant cable sheath material has excellent insulation and flame retardant properties and high hardness.

The invention discloses flame-retardant silicone rubber and a preparation method thereof, and relates to the field of silicone rubber. The technical key points are as follows: the raw materials of thesilicone rubber comprise the following components in parts by weight: 90-110 parts of methyl vinyl raw rubber; 5-8 parts of modified plant ash; 2-3 parts of a vulcanizing agent; 0.7 to 0.9 part of aninternal release agent; wherein the modified plant ash comprises granular plant ash and flame-retardant fibers embedded in the plant ash, one ends of the flame-retardant fibers penetrate out of the plant ash, and the modified plant ash has the advantages that the flame-retardant performance is high, plant ash waste is utilized, and the plant ash pollution problem is reduced.

The invention relates to an oil-resistant electric-leakage-resistant halogen-free flame-retardant PC insulating material composition and a preparation method. The oil-resistant electric-leakage-resistant halogen-free flame-retardant PC insulating material composition comprises polycarbonate, a compatilizer, polyester, an antioxidant, a halogen-free flame retardant, a phosphorus flame retardant and an anti-dripping agent. The oil-resistant compatibilizer and the polyester raw material are added into the polycarbonate for compounding according to the optimal proportion, and the oil-resistant compatibilizer and the polyester raw material can be uniformly distributed in the polymer, have good compatibility with the polycarbonate, and have excellent synergistic oil resistance, so that the flame retardance of a product with the thickness of 1.60 mm can reach the UL-94V-0 level, the mechanical property of the product is not influenced, the product is not cracked due to oil stains, the insulation effect is kept, the tracking resistance reaches 250V, and the safety standard of the electric melting shell of the electronic and electrical product is met.

The invention discloses a thin-wall flame-retardant polycarbonate material and a preparation method thereof. The thin-wall flame-retardant polycarbonate material is prepared from the following raw materials: polycarbonate resin, polycarbonate powder, a flexibilizer, a compound flame retardant, a phosphorus flame retardant, a charring agent, an anti-dripping agent, an antioxidant and a lubricant, the toughening agent is an organic silicon-acrylate copolymer grafted by glycidyl methacrylate; the compound flame retardant is prepared from potassium diphenyl sulfone sulfonate, potassium perfluorobutanesulfonate and octaphenyl polyhedral oligomeric silsesquioxane; the charring agent is a hyperbranched triazine charring agent and/or hyperbranched polyester resin containing hydroxyl groups. The thin-wall flame-retardant PC material has excellent thin-wall flame-retardant performance while having good low-temperature impact resistance, hydrolysis resistance and high-temperature and high-humidity resistance, is good in processability and can be widely applied to thin-wall parts such as 5G communication, electronic and electrical shells and the like.