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High-flame-retardant polyurethane foam thermal insulation material and preparation method thereof

A polyurethane foam and thermal insulation material technology, which is applied in textiles and papermaking, knitting, warp knitting, etc., can solve problems such as flammability, large combustion smoke, and poor thermal insulation effect, so as to solve flammability problems, ensure retention rate, Excellent heat retention effect

Active Publication Date: 2020-06-05
山东金鼎新能源材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, first of all, these materials have relatively large safety hazards, such as flammability, dripping and melting, large combustion smoke, high toxicity, and combustion can produce hydrogen cyanide gas. Once a fire breaks out, it is extremely toxic to the human body. Performance is difficult to meet A-level requirements
Although inorganic thermal insulation materials have good fireproof effects, their thermal insulation effects are poor and cannot be applied to high-rise buildings or cold storage insulation fields.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • High-flame-retardant polyurethane foam thermal insulation material and preparation method thereof
  • High-flame-retardant polyurethane foam thermal insulation material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A highly flame-retardant polyurethane foam insulation material, which uses a warp-knitted spacer fabric as the skeleton, see figure 1 , the warp knitted spacer fabric has an upper layer 1, a lower layer 3 and a connecting layer 2, and the upper layer 1 and the lower layer 3 all have meshes, wherein the spacer yarns of the connecting layer 2 are intermittently arranged in the width direction of the fabric, so that the warp knitted The spacer fabric has a longitudinally continuous hollow section. see figure 2 , insert glass fiber 5 on this hollow section, and use thermal insulation fireproof filler 4 to fill the space of hollow section, inject the reaction mixture of polyurethane foam in the part that has connection layer of warp-knitted spacer fabric, reaction mixture passes through upper layer or Inject and fill the gap between the spacer yarns of the connecting layer into the meshes of the lower layer, and further fill the meshes of the upper layer and the lower laye...

Embodiment 2

[0055] A highly flame-retardant polyurethane foam insulation material, which uses a warp-knitted spacer fabric as the skeleton, see figure 1 , the warp knitted spacer fabric has an upper layer 1, a lower layer 3 and a connecting layer 2, and the upper layer 1 and the lower layer 3 all have meshes, wherein the spacer yarns of the connecting layer 2 are intermittently arranged in the width direction of the fabric, so that the warp knitted The spacer fabric has a longitudinally continuous hollow section. see figure 2 , insert glass fiber 5 on this hollow section, and use thermal insulation and fireproof filler 4 to fill the void of the hollow section, inject the reaction mixture of polyurethane foam in the part with connecting layer of the warp-knitted spacer fabric, and the reaction mixture passes through the upper layer or Inject and fill the gap between the spacer yarns of the connecting layer into the meshes of the lower layer, and further fill the meshes of the upper layer...

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Abstract

The invention relates to a high-flame-retardant polyurethane foam thermal insulation material and a preparation method thereof. A warp-knitted spacer fabric is used as a framework, the warp-knitted spacer fabric is provided with an upper layer, a lower layer and a connecting layer, spacer yarns of the connecting layer are discontinuously arranged in the breadth direction of the fabric, therefore,the warp-knitted spacer fabric is provided with a hollow section which is longitudinally through, glass fibers are inserted into the section, gaps of the hollow section are filled with a heat-insulating fireproof filler, a reaction mixture of polyurethane foam is injected into the part, with the connecting layer, of the warp-knitted spacer fabric and undergoes a foaming reaction, and the polyurethane heat-insulating material with the heat-insulating fireproof filler is immersed into a fireproof solution for impregnation, thereby obtaining the high-flame-retardant polyurethane foam heat-insulating material. The warp knitted fabric with the hollow section is integrally formed and knitted through a double-needle-bed warp knitting technology to serve as a framework of the polyurethane foam heat-insulating material, the problem that the polyurethane foam heat-insulating material is inflammable can be effectively solved, the flame retardant effect is good, the cost is low, and the heat preservation performance is excellent.

Description

technical field [0001] The invention relates to thermal insulation materials, in particular to a high flame-retardant polyurethane foam thermal insulation material and a preparation method thereof. Background technique [0002] At present, most of the insulation materials for buildings and cold chain facilities such as refrigerated trucks and refrigerators are made of organic foam materials, such as polyurethane materials, polystyrene (EPS) materials and phenolic materials. However, first of all, these materials have relatively large safety hazards, such as flammability, dripping and melting, large combustion smoke, high toxicity, and combustion can produce hydrogen cyanide gas. Once a fire breaks out, it is extremely toxic to the human body. Performance is difficult to meet A-level requirements. Although the inorganic thermal insulation materials have a good fireproof effect, their thermal insulation effects are very poor, and cannot be applied to the thermal insulation fi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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IPC IPC(8): C08J5/04C08L75/04C08K3/22C08K3/38C08J9/40D04B21/12
CPCC08J5/046C08J5/042C08J5/043C08J9/40D04B21/12C08J2375/04C08K2201/011C08K2003/387C08K2003/2227
Inventor 张艳萍揭维敏
Owner 山东金鼎新能源材料有限公司