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

The invention relates to the technical field of composite material, in particular to a formulation of an environment-friendly edge banding. The formulation is to prepare PVC materials with different hardness through adding a stabilizing agent, a reinforcing agent, a lubricant, a styrene modifier, a processing aid and other substances into polyvinyl chloride. The formulation not only reduces processing temperature and improves planeness of a product by adding the processing aid without affecting mechanical property, fire resistance, high-strength weather fastness and other physical performances of PVC, but also ensures excellent product performance of the edge banding with small usage of the polyvinyl chloride and low cost; and the product does not contain a heavy metallic salt stabilizingagent, and can protect human health from being hurt, thereby being an environment-friendly product.

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 relates to a method for manufacturing multifunctional industrial cloth, which belongs to the technical field of textile manufacturing. Choose flame-retardant polyester fiber with a denier of 1000-2000dtex as raw material for weaving, the weaving density is (10-20)×(10-20), and the weight of the base cloth obtained by weaving is 150-450g / m2; Coating, the composition of the coating agent is PVC resin paste, plasticizer, stabilizer, filler and functional additives, the above-mentioned components are fully mixed, ground and filtered to obtain the coating agent, and the cross-linking agent is added during the coating process. After coating, drying, plasticizing and shaping, surface treatment is carried out to obtain the coated cloth, and the coating amount on the base cloth is 100-350 g / m2. The industrial fabric prepared by the invention not only has high strength, but also has functions such as anti-oxidation, anti-aging, anti-ultraviolet, etc., and can meet the requirements of various outdoor environments such as high temperature and high radiation.

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 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 foam ceramic insulation material and a preparation method thereof. The preparation method comprises the steps of injecting a filling medium for a foam ceramic insulation material into a foam ceramic filter by virtue of vacuum equipment until gaps inside the filter are filled with the filling medium, and drying in a drying oven at 90-110 DEG C, wherein the foam ceramic filter has a mesh number of 300-400mesh / inch, a filter accuracy of 50-80ppi and a thickness of 40-60mm; the filling medium for the foam ceramic insulation material is prepared from the following raw materials in percentage by weight: 2-3 percent of sodium carboxymethyl cellulose, 38.8-56.0 percent of glass microspheres and the balance of water. The foam ceramic insulation material has excellent insulation performance, excellent compression strength, relatively high size accuracy, good flame retardance, good thermal shock resistance, low hot-shrinkage rate, low heat expansion coefficient, low production cost, simple preparation process and no special equipment, and is suitable for industrial production.

The invention discloses a light-weight vitrified microbead thermal insulation material reinforced by cellulose derivatives and a preparation method thereof. The raw materials used in the preparation of the light-weight vitrified micro-bead thermal insulation material reinforced by cellulose derivatives are calculated by weight percentage, and the ratio is 1.9- 2.7% sodium carboxymethyl cellulose, 36.0-50.3% glass microspheres, 7.2-10.1% glass fiber and the balance is water. The preparation method is to first mix and stir sodium carboxymethyl cellulose and water until a viscous liquid is formed Add glass microspheres and glass fibers into the container, then add the obtained viscous liquid, stir and mix evenly, put the obtained mixture into a mold, compact and form it, demould it, and then dry it at a temperature of 90-100°C to obtain a The light-weight vitrified microbead insulation material reinforced by cellulose derivatives with the characteristics of low density, excellent thermal insulation performance and high mechanical strength has low production cost, simple preparation process and no special equipment, and is suitable for industrial production.

Disclosed is a polycarbonate composition, comprising the following components in parts by weight: a. 30.4 parts to 80.2 parts of polycarbonate; b. 8.4 parts to 49.6 parts of a butadiene copolymer; c. 5.4 parts to 25.2 parts of a flame retardant; and d. 0 parts to 9.6 parts of other additives, where the sum of the parts by weight of the four components, a, b, c, and d, is 100 parts. In the present invention, by selecting the butadiene copolymer composition to be in the formula of the polycarbonate composition, where the structure of a polybutadiene copolymer in the composition is a large sea-island structure rubber phase, 1 to 50 small sea-island structures are present within the large sea-island structure rubber phase, and, when the diameter ratio of 90% or more of the large sea-island structure rubber phase to the small sea-island structures therein of the least diameter is 1.01-80, the impact strength of the polycarbonate composition can be significantly increased without affecting the flame retardancy, fluidity, and heat resistance of the composition, which is especially suitable in scenarios of increase requirements on the use environment.

The invention relates to the technical field of composite material, in particular to a formulation of an alloy material edge banding. The formulation is to prepare PVC materials with different hardness by adding a complex calcium-zinc stabilizing agent, a strengthening agent, a lubricant, a styrene modifying agent, a processing addition agent and other substances into polyvinyl chloride. An ABS material is added into the PVC materials to improve the rigidity of the alloy material edge banding without affecting mechanical property, fire resistance, high-strength weather fastness and other physical performances of PVC, and the processing aid is added to reduce processing temperature and improve planeness of a product. The formulation has the advantages of small usage of the polyvinyl chloride, low cost and excellent product performance of the edge banding; and the product does not contain a heavy metallic salt stabilizing agent, and can protect human health from being hurt, thereby being an environment friendly product.

The invention relates to a preparation method of polyvinyl alcohol (PVA) / sodium silicate modified ceramic flame retardant fiber. The preparation method comprises the following steps: dissolving sodium silicate into distilled water, then adding PVA, and stirring till no precipitates are generated to obtain a mixed solution; smearing the mixed solution on the surface of ceramic fiber, airing the solution at a room temperature, and obtaining the PVA / sodium silicate modified ceramic flame retardant fiber after the PVC is formed into a film. The method disclosed by the invention is quick, simple and convenient; no high-temperature and high-pressure equipment is needed, the energy consumption is low, and the preparation method is applicable to large-scale production.