Composite soft heat insulating material, preparation method and applications thereof

Abstract

The invention discloses a composite heat insulating material of natural rubber-plant fiber-clay, a preparation method and applications thereof. The composite heat insulating material comprises the following components by weight portions: 100 portions of natural rubber or latex (according to dry glue), 1 to 20 portions of modified plant fiber micropowder, 1 to 15 portions of clay, 0.5 to 3.3 portions of sulfur, 1.2 to 4.3 portions of accelerator, 1 to 3 portions of antioxidant and the balance of processing assistants. The preparation method comprises the following steps of: using the natural rubber as material, going through the conventional raw material compounding operation, wherein adding the modified plant fiber micropowder, the clay and other ingredients into the natural rubber, preparing into natural rubber composite heat insulating material and products containing the modified plant fiber micropowder and the clay by procedures of foaming, forming, sulfurization and the like. The obtained composite heat insulating material and the products can be applied in the preparation of soft heat insulating material boards, soft heat insulating pipes, soft heat insulating sleeves and the like, and have the characteristics of environmental improvement, high heat insulating efficiency, softness with any folding, excellent performance and the like.

Description

technical field [0001] The invention relates to thermal insulation materials, in particular to environmentally friendly composite flexible thermal insulation materials using natural rubber, plant fiber, clay, etc. application in products. Background technique [0002] my country has become a big energy consumption country, but the problem of low energy utilization has not been solved. At present, my country's energy utilization rate is only 30%, and the energy consumption coefficient is 4-8 times higher than that of developed countries. The energy consumption of building materials and buildings in my country accounts for 47.3% of the total energy consumption. 2-3 times that of the country, plus the consumption of thermal equipment, pipelines, air conditioners, etc. in other sectors such as electric power, chemical industry, petroleum, metallurgy, textile, transportation, etc., the amount is huge. The country's "Medium and Long-term Special Plan for Energy Conservation" stip...

AI Technical Summary

Problems solved by technology

[0011] (7) Nanoporous silicon insulation material: Most of the pores of the constituent materials are smaller than 50nm, the price is high, and the application is not yet common

[0013] (1) Insulation materials such as perlite, rock wool, and calcium silicate have a high water absorption rate, and lose their thermal insulation effect after containing water, and will corrode pipelines; on-site operation is difficult, and powder and fibers will pollute the body and clothing

[0014] (2) Polystyrene insulation material is easy to soften and deform at high temperature, the safe use temperature is 70°C, the maximum use temperature is 90°C, the fire performance is poor, and it cannot be used in places with high fire protection requirements

[0015] (3) Polyurethane foam insulation material has excellent heat insulation performance, but the use of foaming agent Freon will destroy the ozone layer and cause the greenhouse effect. At the same time, polyurethane insulation material is expensive, which is 2-3 times that of other rubber and plastic insulation materials; its pipe joints The material is prepared from volatile chemical raw materials, which is a toxic operation and will seriously harm the health of the workers; the construction process is complicated, the operation is difficult, and the project cost is high

But in our country, the utilization rate of plant fiber is very low.