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Low voc hydrolysis resistant polyurethane foam and preparation method thereof

A technology of polyurethane foam and hydrolysis resistance, applied in the field of low VOC hydrolysis resistance polyurethane foam and its preparation, can solve the problems of poor hydrolysis performance and high VOC value

Active Publication Date: 2020-11-03
江苏赛胜新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] One of the technical problems to be solved by the present invention is the problem of high VOC value and poor hydrolysis performance in the polyurethane foam in the prior art, and a new polyurethane foam is provided, which has the advantages of low VOC and good hydrolysis performance

Method used

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  • Low voc hydrolysis resistant polyurethane foam and preparation method thereof
  • Low voc hydrolysis resistant polyurethane foam and preparation method thereof
  • Low voc hydrolysis resistant polyurethane foam and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 1) Prepare component A: 100kg; in foaming container A, add CHE-8282D: 25kg, CHE-204: 50kg, CHK-350D: 15kg, water: 3kg, TMR-2: 0.5kg, glycerin: 4kg and L-580: 2.5kg, stirring reaction for 60min, the stirring reaction temperature is 15°C, standing still to get component A;

[0022] 2) Preparation of component B: In the foaming container B, add 30 parts of diphenylmethane diisocyanate (MDI) and 70 parts of polyphenylpolymethylene polycyanate (PAPI), and stir for 60 minutes to react. The temperature is 15°C, and component B is obtained by standing still;

[0023] 3) Preparation of polyurethane foam: mix weighed component A and component B, stir and pour into a mold for free foaming to obtain polyurethane foam, wherein the weight percentage of component A and component B is 1:1. The quality of the foam product and the detected VOC value are shown in Table 3.

Embodiment 2～5

[0025] The experiments of Example 2 to Example 5 were carried out according to the steps of Example 1, the only difference being that the types and ratios of raw materials were different, as shown in Table 2. The quality of the foam product and the detected VOC value are shown in Table 3.

[0026] Percentage by weight and parts by weight of each component in Table 2 embodiment 1 to embodiment 5

[0027]

[0028]

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PUM

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Abstract

The invention relates to low-VOC hydrolysis-resistant polyurethane foam as well as a preparation method and the application thereof and mainly solves the problems of higher VOC value and poor hydrolysis performance existing in the prior art. The low-VOC hydrolysis-resistant polyurethane foam consists of a component A and a component B with a mass percentage of 1 to 0.9-1.5, wherein the component Acomprises 20-30 percent of polyether polyol I, 40-60 percent of polyether polyol II, 5-20 percent of polyether polyol, 1-5 percent of a foaming agent, 0.1-1 percent of a catalyst, 2-5 percent of a cross-linking agent and 1-3 percent of silicone oil by weight; the component B comprises 20-40 percent of polyphenyl polymethylene polyisocyanate and 60-90 percent of diisocyanate by weight; with the adoption of the low-VOC hydrolysis-resistant polyurethane foam and the technical scheme of the preparation method, the problems are better solved; the low-VOC hydrolysis-resistant polyurethane foam canbe applied to an automobile skylight sunshade boards or automobile roof materials.

Description

technical field [0001] The invention belongs to the field of polyurethane foam and its preparation method and application, in particular to low-VOC hydrolysis-resistant polyurethane foam and its preparation method and application. Background technique [0002] Polyurethane foam has outstanding physical properties and is widely used in the automotive industry. In recent years, automobile manufacturers have put forward more stringent demands on their foam suppliers, especially the stricter requirements on the volatile organic compound (VOC) content and odor of polyurethane foam. The Chinese interpretation of VOC means volatile organic compounds, which have a sense of smell, are irritating, and have certain toxicity. VOC mainly includes aldehydes, amines, benzene compounds, and low molecular alcohols. According to the national standard GB18586-2001, choose a stricter definition of VOC, the general term for organic volatiles with a melting point below room temperature and a bo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/48C08G18/32C08G18/76C08G18/79C08G18/75
CPCC08G18/3206C08G18/3228C08G18/3271C08G18/3275C08G18/3281C08G18/4804C08G18/724C08G18/758C08G18/7607C08G18/7614C08G18/7671C08G18/794C08G2110/0083
Inventor 陈观洪蒋海平吴迪
Owner 江苏赛胜新材料科技有限公司