Preparation method for lightweight thermal insulation material

Abstract

Provided is a preparation method for a lightweight thermal insulation material. The preparation method is characterized in that, one of carbon fibers or carbon fiber preoxidation filaments, three-dimensional hollow polyester fibers and low-melting-point polyester fibers at a mass ratio of 40-60:25-45:15-25 are mixed uniformly, the mixture is lapped to multiple layers through a lapping machine and sent to a baking box, baked at a controlled temperature of 180-220 DEG C until the low-melting-point polyester fibers are melted entirely, all the materials are melted and cohered together, and then cooling and shaping are carried out. The thermal insulation material is added with the carbon fibers with a low density, the global density is lowered, and the carbon fiber preoxidation filaments have a high ignition point and good fireproof performances after high temperature quenching. The thermal insulation material is added with the polyester fibers, the whole product is liable to forming, the flexibility is raised, the springback effect is excellent, folding and packaging are convenient, and human resource cost and material resource cost during the transport link and the cutting installation link are lowered greatly.

Description

【Technical field】 [0001] The invention relates to the field of thermal insulation materials, in particular to thermal insulation materials used in vehicles. 【Background technique】 [0002] Insulation materials generally refer to materials with a thermal coefficient less than or equal to 0.2, and the industries that have the greatest demand for insulation materials in the industrial field are construction and rail vehicles. The traditional insulation materials used in rail transportation and construction are mineral wool, glass wool, and rock wool. , Melamine board, these traditional insulation materials generally have the problem of thick insulation layer and large heat loss, especially the non-polar insulation material has a high density, is relatively thick, and is easy to produce sticky debris. There are some technical problems during use and cutting. However, organic thermal insulation materials have relatively poor fire resistance and have certain toxicity. Long-term cl...

AI Technical Summary

Problems solved by technology

[0002] Insulation materials generally refer to materials with a thermal coefficient less than or equal to 0.2, and the industries that have the greatest demand for insulation materials in the industrial field are construction and rail vehicles. The traditional insulation materials used in rail transportation and construction are mineral wool, glass wool, and rock wool. , Melamine board, these traditional insulation materials generally have the problem of thick insulation layer and large heat loss, especially the non-polar insulation material has a high density, is relatively thick, and is easy to produce sticky debris. There are some technical problems during use and cutting. However, organic thermal insulation materials have relatively poor fire resistance and have certain toxicity. Long-term close contact with the human body may have adverse effects on human health. In addition, organic thermal insulation materials have poor fire resistance and are safe. Hidden dangers, secondly, thermal insulation materials need to be cut and cut during installation, but it is difficult to cut the dense and brittle thermal insulation materials, and it is not easy to follow-up molding and installation