Preparation method for lightweight thermal insulation material

A kind of thermal insulation material and lightweight technology, applied in the field of thermal insulation materials, can solve problems such as not easy to form and install, poor fireproof performance, high density of non-polar thermal insulation materials, etc., to achieve easy folding and packaging, reduce overall density, and excellent rebound effect Effect

Inactive Publication Date: 2014-05-07
JILIN ZEXI TECH DEV
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  • Abstract
  • Description
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  • Application Information

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

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Weigh 45kg of carbon fiber, 30kg of three-dimensional hollow polyester fiber and 25kg of low melting point polyester fiber for use;

[0015] Put it into a mixing container and mix evenly, then transfer it to the net-laying machine, connect the net-layping machine to the non-glue cotton production line, and directly send the mixed three materials into the oven of the non-glue cotton production line for heating. Temperature control 12-15°C / min heating rate, continue heating until the temperature reaches 180°C, bake at a fixed temperature until all the low-melting point polyester fibers are melted, and all materials are melted and bonded together. No adhesive is used in the whole production process, and all materials are bonded together by melting low-melting polyester fibers, and then cooled and set. However, traditional thermal insulation materials use a large amount of adhesive to form in the production, so this patented product does not contain formaldehyde and other i...

Embodiment 2

[0016] The technical solution of embodiment 2 is roughly the same as that of embodiment 1, except that 50 kg of carbon fiber pre-oxidized yarn, 25 kg of three-dimensional hollow polyester fiber and 25 kg of low-melting point polyester fiber are used to make the insulation material. Increasing the proportion of polyester fiber can control the flexibility of the insulation material. Within a certain range, the proportion of polyester fiber is higher and the flexibility is better.

[0017] Carbon fiber (carbon fiber) not only has the inherent essential characteristics of carbon materials - inertness, but also has the softness and processability of textile fibers. It is a new generation of reinforcing fibers. Compared with traditional glass fibers (GF), Young's modulus It is more than three times that, and it is insoluble and non-swelling in organic solvents, acids, and alkalis. It has outstanding corrosion resistance, is durable, and can maintain the fiber form for a long time in ...

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PUM

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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...

Claims

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Application Information

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IPC IPC(8): B29C51/00
Inventor 徐福生
Owner JILIN ZEXI TECH DEV
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