37results about How to "Synergistic flame retardant effect is good" patented technology

The invention relates to phosphorus-containing vegetable oil based flame-retardant polyol and a preparation method and application thereof. The preparation method of the phosphorus-containing vegetable oil based flame-retardant polyol comprises the following steps: carrying out epoxide reaction on tung oil methyl ester with hydrogen peroxide and methanoic acid under the catalyzing effect of a home-made phase transfer catalyst at first to prepare multi-functionality-degree epoxidized tung oil methyl ester; reacting the obtained epoxidized tung oil methyl ester with reactive-hydrogen-containing DOPO (DOPO belongs to phosphorus-containing phenanthrene ring and heterogeneous ring compound, and the full name of DOPO is 9,10-diamine-9-oxygen heterocyclic-10- phosphaphenanthrene-10-oxide) to obtain the phosphorus-containing vegetable oil based flame-retardant polyol. The obtained polyol is a flame retardant, the synthesized structural flame-retardant vegetable oil based polyol is used in hard polyurethane flame-retardant foam, mechanical strength and flame retardance of the foam are improved, and a preparation process is simple, convenient to operate and easy to obtain. The phosphorus-containing vegetable oil based flame-retardant polyol is compounded with tris( 2-chloropropyl) phosphate, phosphorus-nitrogen synergistic flame retardant effect is good, the use amount of a flame retardant can be reduced, the flame retardant effect is much better than the flame retardant effect of the tris( 2-chloropropyl) phosphate which is used independent, and the oxygen index (LOI) can reach 29%.

The invention provides an environment-friendly fireproof material for electrical equipment and a preparation method of the environment-friendly fireproof material, and belongs to the fields of fireproof materials and preparation technologies thereof. The environment-friendly fireproof material for the electrical equipment is characterized by being prepared from the following raw materials in parts by weight: 50 to 60 parts of modified epoxy resin, 30 to 40 parts of fluorocarbon resin, 60 to 90 parts of a fire retardant, 3 to 10 parts of expanded graphite, 3 to 10 parts of alumina silicate fiber and 2 to 8 parts of molecular sieves. The fireproof material provided by the invention is applied to fire protection of the electrical equipment, and is high in crack resistance, water resistance and weather resistance and good in expansion character; meanwhile, the heat release rate of a base material in a burning condition can be obviously reduced, and the quality loss is reduced; moreover, the fireproof material is small in smoke production quantity and good in environmental protection effect.

The invention discloses a synergic flame retardance asphalt material, which is characterized in that the asphalt material is prepared by mixing the following raw materials in parts by weight: 100 of asphalt, 0.2-40 of metal hydroxide, 0.1-30 of layered silicate; the asphalt is one or more of petroleum asphalt, rock asphalt and coal pitch; and the metal hydroxide is aluminum hydroxide and / or magnesium hydroxide. The invention also provided a preparation method of the synergic flame retardance asphalt material. According to the invention, the synergic flame retardance function of the metal hydroxide and the layered silicate is utilized to perform nano composite modification on asphalt; compared with the common organic flame retardant (such as a halogen flame retardant), the flame retardance technique adopted by the synergic flame retardance asphalt material is a green, non-toxic and environmentally friendly flame retardance technique; and the various road performances of the flame retardance asphalt material are good, the use requirements are met, the period of the storage stability can reach above one year, and the temperature sensitivity and the ageing resistance are obviously better than those of common asphalt.

The invention provides a halogen-free flame-retardant composite material and a preparation method thereof, and the halogen-free flame-retardant composite material comprises 10%-40% (by weight) of polyethylene, 4.5%-20% (by weight) of elastomer, 40%-70% (by weight) of halogen-free flame retardant, 0.5%-15% (by weight) of flame-retardant synergist and 1%-5%( by weight) of lubricant according to thetotal weight of the composite material, wherein the flame-retardant synergist is selected from one or more of melamine, melamine cyanurate and melamine high molecular weight phosphate. The preparation method comprises the step of carrying out melt compounding on the polyethylene, the elastomer, the halogen-free flame retardant, the flame-retardant synergist and the lubricant through an extruding machine. The halogen-free flame-retardant composite material has the advantage of novel property, environmental protection, safety, excellent flame retardance, good anti-melt droplet effect, good toughness, excellent molding and processing performance and the like, and can achieve the UL-94V-0 (the plate thickness is 4mm) flame retardant level, thereby being particularly applicable to preparing halogen-free flame-retardant aluminum-plastic composite plates.

The present invention proposes a kind of aluminosilicate nanotube, flame-retardant composite material and preparation method thereof, aluminosilicate nanotube adopts Al(NO 3 ) 3· 9H 2 O and tetraethyl orthosilicate preparation, flame-retardant composite material, is made up of the raw material of following weight part: PVC resin 100 parts, dioctyl phthalate 35-45 parts, stabilizer 3-6 parts, lubricant 0.4 ‑0.6 part and 5 parts of flame retardant, the flame retardant includes 0.1‑0.4 part of the described aluminosilicate nanotube and 4.6‑4.9 part of Sb 2 o 3 . The invention simplifies the preparation process of the aluminosilicate nanotube, shortens the production cycle, optimizes the preparation process, and the flame-retardant composite material has good flame-retardant and smoke-suppressing effects and mechanical properties.

The invention relates to the field of a polymer composite material, in order to solve the problems of inferior fireproof safety, anti-ageing effect and inflammable property of most polymer materials. The invention provides a preparation method for an organic silicon and graphene oxide synergistic flame retardant polymer composite material. According to a method for respectively wrapping graphene oxide and organic silicon resin on the surface of a flammable polymer material, the excellent high temperature resistance and synergistic flame retardant effect of the graphene oxide and organic silicon resin are utilized to realize the efficient flame retardant fireproof property of the flammable polymer material, and meanwhile, the physical properties of the polymer material are effectively maintained.