157results about How to "Effective flame retardant" patented technology

The invention discloses a low-shrinkage medium-temperature-cured high-efficiency flame-retardant unsaturated polyester fiberglass reinforced plastic board and a preparation method thereof. The low-shrinkage medium-temperature-cured high-efficiency flame-retardant unsaturated polyester fiberglass reinforced plastic board is prepared from the following components in parts by weight: 50-60 parts of unsaturated polyester resin, 20-30 parts of a low-shrinkage additive, 1-3 parts of an accelerant, 0.5-2 parts of an initiator, 2-5 parts of a medium-temperature curing agent, 0.1-0.5 part of a thickening agent, 8-15 parts of a novel halogen-free flame retardant, 100-130 parts of inorganic filler, 2-3 parts of a release agent and 100-150 parts of fiberglass. The curing degree, the bending strength and the flexibility of the low-shrinkage medium-temperature-cured high-efficiency flame-retardant unsaturated polyester fiberglass reinforced plastic board can be improved; residual styrene in the fiberglass reinforced plastic board is reduced.

Brominated and epoxidized organic compounds are useful flame retardants for polymers such as polystyrene. The organic compounds contain both bromine and oxirane groups, and have molecular weights of at least 1500. The brominated and epoxidized organic compounds can be prepared by sequentially brominating and epoxiding (in either order) a starting compound that contains multiple non-conjugated carbon-carbon double bonds.

The invention relates to a flame-retardant activated carbon fabric and a preparation method thereof. The flame-retardant activated carbon fabric is characterized in that an activated carbon layer, a water-based adhesive film layer and a hot-melt adhesive powder particle layer are sequentially covered on a base material which is subjected to flame-retardant treatment. The preparation method comprises the following steps of: spraying or padding the base material with an environment-friendly water-based flame retardant and drying; serially coating a prepared activated carbon paste and a water-based flame-retardant hot-melt adhesive powder particle paste on the base material, and drying to obtain the final product of flame-retardant activated carbon fabric. During the drying process, the water-based adhesive film layer is formed between the carbon layer and the hot-melt adhesive powder particle layer. The preparation method of the flame-retardant activated carbon fabric is simple and environment-friendly, and the product has good flame retardant property. Owing to the good adsorption property of activated carbon, the fabric can remove formaldehyde, benzene, TVOC and other harmful gases in the air. When the fabric is used, the fabric can be cut freely and laminated thermally. The flame-retardant activated carbon fabric is easy and convenient to use and has a wide application range.

The invention provides composite ecological wood. The wood comprises the following compositions in percentage by weight: 35 to 40 percent of wood meal, 40 to 49 percent of PVC, 2 to 3 percent of calcium carbonate, 4 to 6 percent of a foaming regulator, 4 to 6 percent of a stabilizing agent, 4 to 6 percent of impact-resistant ACR, 0.5 to 1.5 percent of a processing additive ACR, 0.2 to 0.4 percent of toner, an internal lubricant and an external lubricant, a foaming agent accounting for 0.1 to 1 percent of the PVC and a coupling agent accounting for 3 to 5 percent of the wood meal; and when a product is used outdoors, the product also comprises an antioxidant, an ultraviolet absorbent and a light stabilizing agent which have 0.1 to 0.5 percent of weight portions respectively. Compared with the prior art, the composite ecological wood thoroughly overcomes the disadvantages of raw wood, improves the shortage of the raw wood and keeps the particular wooden texture of the raw wood; simultaneously, for the addition of the antioxidant, the ultraviolet absorbent and the light stabilizing agent, the composite ecological wood also prevents photooxidation, fading, cracking and the like caused by ultraviolet irradiation, increases the weather resistance and prolongs the service life.

A filter assembly includes a filter pad comprising fibers including natural, synthetic and/or hybrid fibers. A stabilizer frame formed of a non-metallic material may be imbedded in the filter pad. The stabilizer frame may be configured to provide support to the filter pad to maintain the filter pad in a generally flat configuration. In accordance with a particular embodiment, the filter pad may be comprised of at least first and second fibrous mats that are coupled together. In this embodiment, the stabilizer frame may be disposed between and coupled with the first and second fibrous mats.

A halogen-free flame-retardant and anti-static polyethylene material, a pipe and a preparing method thereof belong to the processing field of plastic pipes. The present invention aims to provide a halogen-free flame-retardant and anti-static polyethylene material and a pipe prepared from the material. The halogen-free flame-retardant and anti-static polyethylene material is prepared from 70 to 99 shares of polyethylene, 1 to 30 shares of expanded graphite (EG)/ polyethylene (PE) superfine composite powder, 1 to 30 shares of synergistic flame retardant and 1 to 5 shares of conductive black by the steps of melting and blending at a temperature of 160 DEG C to 200 DEG C, extruding, granulating and drying. The EG/ PE superfine composite powder is made by simultaneously grinding PE and EG with a millstone type mechanochemical reactor, and the granularity of the powder is 1000 meshes. The halogen-free flame-retardant and anti-static polyethylene pipe made from the halogen-free flame-retardant and anti-static polyethylene material prepared according to the present invention has the characteristics of halogen-free flame retardation, high flame-retardant efficiency and excellent comprehensive mechanical properties. Besides, the raw material cost of the halogen-free flame-retardant and anti-static polyethylene pipe can be largely reduced, and the pipe is simply processed and conveniently made.

The invention relates to the field of building boards and in particular relates to a novel composite board and a preparation method thereof. The novel composite board comprises a bottom board and a panel layer which is stuck on the bottom board, wherein the bottom board comprises the following raw materials in parts by weight: 90-110 parts of PVC particles, 40-60 parts of calcium carbonate powder, 3-6 parts of a stabilizer, 1.0-1.4 parts of a foaming agent, 6-8 parts of a foaming regulator, 0.3-0.5 part of polyethylene wax, 0.3-0.4 part of internal lubricant, 0.2-0.4 part of oxidized polyethylene wax, 4-6 parts of chlorinated polyethylene, 0.5-1.5 parts of an internal lubricant additive and 9-11 parts of wood powder. The novel composite board has the good waterproof and damp-proof effects and solves the problem that common boards in the prior art are soaked by water so as to seriously deform. The novel composite board also has the recycling characteristic and solves the technical problem that a large amount of wood needs to be consumed in wooded boards in the prior art.

The invention provides a method for producing flame-retardant oriented strand boards with full eucalyptus wood scraps. The method comprises the working procedures of material preparation, drying, debarking and impurity removal, sorting and storage, respective gluing on surface layers and a core layer, graded laying, preheating pressing molding, sanding and finishing, and the like, wherein the surface layers are coated with isocyanate sawdust powder compound adhesive, the core layer is coated with flame-retardant compound urea-formaldehyde resin adhesive, core layer shavings are divided to form a three-layer structure which includes a core layer middle layer, a core layer upper surface layer and a core layer lower surface layer, vertical laying is adopted for the core layer middle layer, and transverse laying is adopted for the core layer upper surface layer, the core layer lower surface layer and the surface layers. According to the oriented strand boards produced with the method, the static bending intensity in the parallel direction ranges from 30 MPa to 40 MPa, the parallel elasticity modulus ranges from 4600 MPa to 4770 MPa, the vertical elasticity modulus ranges from 1500 MPa to 1780 MPa, the thickness swelling rate of water absorption of 24 hours ranges from 10% to 17%, the vertical nail-holding power is as high as 89000 N, and the dimensional stability and reliability are good. In addition, the oriented strand boards produced with the method further have the excellent effect of flame retardance.

A class D fire extinguishing agent is prepared by using the following components, by mass, 68-74% of sodium chloride, 5-8% of talcum powder, 7-10% of halogen-free flame retardant powder, 4.2-6% of white carbon black, 7-10% of calcium chloride, 1.2-1.7% of silicone oil and 0.3-0.7% of magnesium powder. A preparation method of the class D fire extinguishing agent comprises the following steps: respectively crushing sodium chloride, talcum powder, the halogen-free flame retardant powder, white carbon black and calcium chloride to form powders; and dehydrating sodium chloride, drying, mixing the dried sodium chloride with the talcum powder, the halogen-free flame retardant powder, the white carbon black and calcium chloride, and fully and uniformly mixing at a certain temperature, baking, adding the silicone oil, continuously baking, uniformly mixing, adding the magnesium powder, and uniformly stirring to prepare the finished extinguishing agent. In the invention, the above sodium salt is adopted as a main material, a small amount of the flame retardant is added, and the flame retardant, a catalyst and a metal substance in the sodium salt are effectively introduced and are finally effectively combined in order to effectively extinguish class D metal alkyl substance fires.

The invention relates to a method for producing full-eucalyptus plywood with flame-retardant composite urea-formaldehyde resin, comprising the steps of wood board peeling->veneer drying -> gluing -> three times of cold pressing -> standing for curing->three times of hot pressing ->heat dissipation for curing->slab calibrating and sanding. The method is characterized in that the melamine modified urea-formaldehyde resin is used as the main ingredient in the adhesive; the oxidized starch as adhesive compound, the polyving akohol as toughening agent, the hydrogenated rosin as antioxidant, the polyisocyanate as curing agent, i-butyltriethoxanesilane as bridging agent, phenolic lignin as formaldehyde scavenger and flame retardant agent are added together to produce the flame-retardant composite urea-formaldehyde resin. The flame-retardant composite urea-formaldehyde resin has such advantages as littleformaldehyde residue, perfect flame resistance and lowering combustion temperature by internal endothermic reaction so that the full-eucalyptus parquet contains little formaldehyde residue and has good flame-retardant effectin case of fire disasters.

The invention provides a method for building a pavilion by plastic wood profiles instead of wooden materials, which includes steps of manufacturing pre-formed components of the pavilion by plastic wood materials, making supporting parts of bases of vertical columns by square steel, reinforcing inclined beams and crossbeams by three-beam connectors, and reinforcing the crossbeams to form the pavilion by wrap-angle parts. PE (polyethylene) particles and wood shavings are extruded to manufacture profiles of a plastic-wood pavilion after being heated and mixed, the plastic-wood pavilion is high in fireproof performance and effective in flame retarding, the fire rating can reach the B1 level, fire on the plastic-wood pavilion is extinguished automatically, and no poisonous gas is produced. The pavilion cannot crack, cannot be expanded and deformed and is free of maintenance and repair and easy to be cleaned, and accordingly, cost for post maintenance and repair is saved and a great quantity of wood is saved as well. Construction and mounting are simple, short in time and low in labor cost since the pre-formed components are used for building pavilions.

The invention belongs to the technical field of floors and particularly relates to a wood-plastic floor. The wood-plastic floor is prepared from, by weight, 80-100 parts of PVC, 60-100 parts of wood materials, 20-40 parts of light calcium carbonate, 1-2 parts of a foaming agent, 4.5-5.5 parts of a stabilizer, 2.5-3.5 parts of a lubricant, 5-8 parts of chlorinated polyethylene, 0.5-2 parts of a plasticizer, 0.5-1.5 parts of a compatibilizer and 1-1.5 parts of an antioxidant, wherein the wood materials comprise rice husk meal and wood meal. The wood-plastic floor is safe, environmentally friendly, good in performance and not prone to deformation. According to the wood-plastic floor, waste materials are effectively utilized, so that resources are saved, and production cost is reduced.