Silica-gel foaming-gel heat-insulation pipe and preparing method

Abstract

The invention relates to the insulation of a silicone tube styrofoam and methods of preparation. The product formulation and preparation processes as follows: 1.make the Weight of the vinyl methyl silicone rubber and other groups in the seven to input rubber into mixing machine; 2. Warm up to 60 -180 degree C, mixing 2 h, 20 min vacuum, cooling 12 h, 3. firstly, mixing and cooling the material to cool down to 100-120 degree C, inputting it into the chain, then making the Weight of blowing agents into three groups to opened machines for practising;4. take opened mixed materials into uniform after slicing machine slices 5. after the biopsy material inputs extruder, extrusion molding, 6. Extrusion molding materials will be used for imported electric rotating conveyor belt Hot Air Road, sulfide foamed under the 200 -250 degree C;7. package products after the cooling of curing foam. The invention of the products are low-density, thermal conductivity on the insulation effect, and aging resistance of high tensile strength, flexibility performance, and apply a wide range of temperatures, good of weathering, simple preparation procedures, the efficiency of operation, and friend environment features .

Description

1. Technical field [0001] The invention relates to the technical field of chemical industry, in particular to a silica gel foam insulation pipe and a preparation method thereof. 2. Background technology [0002] Insulation pipes are widely used in various pipes for air-conditioning and heating equipment in industries such as automobiles, electronics, construction, petrochemicals, and mechanical processing, in order to conduct liquid, air, and heat, cold, and heat insulation. [0003] At present, the thermal insulation pipes on the market are either made of rock wool or glass wool, or made of polyurethane or polyethylene rubber. The products have certain thermal insulation properties and effects, and even some products have both thermal insulation and fireproof properties, but the common problems are as follows Disadvantages: First, the product has high density and high thermal conductivity, so that the heat insulation effect, tensile strength and aging resistance are poor; s...

AI Technical Summary

Problems solved by technology

[0003] At present, the thermal insulation pipes on the market are either made of rock wool or glass wool, or made of polyurethane or polyethylene rubber. The products have certain thermal insulation properties and effects, and even some products have both thermal insulation and fireproof properties, but the common problems are as follows Disadvantages: First, the product has high density and high thermal conductivity, so that the heat insulation effect, tensile strength and aging resistance are poor; second, the product is not soft enough, so it is not easy to cut, labor and materials are required; third, the applicable temperature range of the product is narrow , resulting in poor weather resistance and short life

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