High-efficiency heat-insulation environmentally-friendly flame-retardant modified polyolefin indoor heat-insulation foam and preparation method thereof

Abstract

The invention relates to high-efficiency heat-insulation environmentally-friendly flame-retardant modified polyolefin indoor heat-insulation foam and a preparation method thereof. The preparation method comprises the following steps of: kneading low-density polyethylene resin, a composite flame retardant, an anti-smoke agent, an antioxidant and a lubricant at normal temperature, then discharging to an internal mixer for internal mixing, then discharging to a single-screw extrusion granulator, and carrying out melting, plastication and granulation to obtain a master batch A; adding low-densitypolyethylene resin to a high-speed mixer, then adding azobisformamide, talc powder, a lubricant and zinc stearate, kneading at normal temperature, and then discharging to a single-screw extruder for granulating to obtain a master batch D; adding low-density polyethylene resin, ethylene-vinyl acetate copolymer, ethylene propylene terpolymer, the master batch A, a master batch B, hollow ceramic microbeads, a rheologic agent and a lubricant to a high-speed mixer, kneading at normal temperature for 3 minutes, then discharging to a single-screw extruder, and extruding into sheets; carrying out radiation cross-linking on the extruded sheets through an electronic accelerator; placing the cross-linked sheets in a foaming furnace for foaming; and coating expansible fireproof paint on the surface of the foam.

Description

technical field [0001] The invention relates to a high-efficiency, heat-insulating, environment-friendly, flame-retardant modified polyolefin indoor heat-preserving foam and a preparation method thereof. Background technique [0002] At present, the energy consumption of residential buildings accounts for 32% of the national energy consumption. Nearly 40 billion square meters of buildings in my country are basically high-energy-consuming buildings, and the heating energy consumption per unit area is equivalent to 2-3 times that of developed countries with similar climate conditions. At present, nearly 2 billion square meters of new buildings are built in my country every year, exceeding the sum of the construction volume of all developed countries, but more than 95% of them are still high energy consumption buildings. It is predicted that in the next 10 years, that is, by 2020, about 20 billion square meters of buildings will be built in my country. If no energy-saving mea...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the disadvantages of low thermal insulation efficiency of inorganic thermal insulation materials, non-standard flame retardancy of organic thermal insulation materials, unenvironmental protection, large amount of combustion smoke, release of toxic and harmful gases, low thermal insulation effect, etc., to provide a thermal insulation effect, Reaching A-class flame retardant requirements, environmental protection, non-toxic and tasteless, cross-linked polymer foaming material and preparation method thereof