High-density and low-shrinkage rubber and plastic thermal insulation material and preparation method thereof

Abstract

The invention discloses a high-density and low-shrinkage rubber and plastic thermal insulation material and a preparation method thereof, and relates to the technical field of thermal insulation materials. The thermal insulation material includes 18 to 24 parts of rubber, 18 to 24 parts of a foaming agent, 68 to 82 parts of a smoke abatement flame retardant, 8 to 12 parts of carbon black, 13 to 17 parts of polyvinyl chloride resin, 1.3 to 1.7 parts of stearic acid, 1.3 to 1.7 parts of a dispersant, 1.3 to 1.7 parts of a calcium-zinc stabilizer, 28 to 32 parts of chlorinated paraffin oil, 5 to 8 parts of ointment, 14 to 17 parts of argil, 6 to 8 parts of silicon dioxide, 3.1 to 4.5 parts of an accelerant and 5 to 10 parts of glass fiber powder. By adding the glass fiber powder, the glass fibers can be arranged along the flowing direction in the processing process, so that the shrinkage of the rubber and plastic material is effectively reduced; besides, the argil, as a filler, can improve the mechanical properties of the rubber, improve the processability of the material, play a reinforcing role, reduce the supporting strength of the material to bubble walls, and reduce the problem of spouting or collapse.

Description

technical field [0001] The invention relates to the technical field of thermal insulation materials, in particular to a high-density, low-shrinkage rubber-plastic thermal insulation material and a preparation method thereof. Background technique [0002] With the increasingly widespread application of rubber and plastic insulation materials, the conditions of use in some application fields are very harsh, and the harsh environment of use also exposes some defects of rubber and plastic insulation materials: such as excessive shrinkage, insulation failure, appearance damage, etc. As a kind of foamed polymer material, rubber and plastic insulation material mainly relies on the material itself and the gas locked inside for insulation. When the gas inside the material escapes or bubbles, the internal and external pressure imbalance will cause shrinkage and hardening, which will seriously affect the thermal insulation performance of the material; if the solid part of the material ...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a high-density, low-shrinkage rubber-plastic insulation material and its preparation method, so as to solve the problem that the existing rubber-plastic insulation materials are easy to shrink and affect the insulation performance