Hard polyurethane foam composite, foam preparation method and thermal insulation component

A technology of rigid polyurethane and composition, which is applied in the field of rigid polyurethane foam composition, can solve the problems of no clear demolding time, unsuitable door body rapid demoulding and foaming, etc., so as to improve the post-curing performance and shorten the demoulding time. Mold time, the effect of improving dimensional stability and strength

Active Publication Date: 2014-11-19
HEFEI HUALING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Many researches have been devoted to the development of rigid polyurethane foam compositions with fast demoulding time, but these rapid demoulding polyurethane related technologies are still not suitable for rapid demoulding and

Method used

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  • Hard polyurethane foam composite, foam preparation method and thermal insulation component
  • Hard polyurethane foam composite, foam preparation method and thermal insulation component
  • Hard polyurethane foam composite, foam preparation method and thermal insulation component

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-3

[0127] In Example 1-3, changing the ratio of polyol components (a1) to (a5) and the ratio of each component in the composite catalyst can prepare polyurethane foam with short demoulding time, high strength and good dimensional stability, See Table 1 for details. Among them, the polyol composition of Comparative Example 1 did not include the polyol components (a3) ​​and (a5), and the polyol composition of Comparative Example 2 did not include the polyol compositions (a1) and (a2).

[0128] Table 1

[0129]

[0130]

[0131] As can be seen from Examples 1, 2 and 3 in Table 1 above, high-functionality polyether and aromatic amine polyether polyol compositions can be used to produce polyurethane foams with high strength and good mold release properties, and the foams Has good dimensional stability.

[0132] As can be seen from Table 1 above, Comparative Example 1 does not contain polyol components (a3), (a5), foam expansion rate and thermal conductivity increase significan...

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PUM

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Abstract

The invention relates to a hard polyurethane foam composite which comprises the following components: (a) a polyhydric alcohol composite comprising a polyether polyol polymerized from sucrose and oxidized olefin, a polyether polyol polymerized from sorbitol, glycerinum and oxidized olefin, an amine polyether polyol polymerized from toluenediamine and the oxidized olefin, a polyether polyol polymerized from glycerinum and the oxidized olefin, and a polyether polyol polymerized from MDA (methylene diphenylamine) and the oxidized olefin; (b) a foam stabilizer; (c) a composite catalyst comprising a foaming catalyst, a gel catalyst and a polymerization catalyst at the weight ratio of (0-4):(0.2-10):1; (d) a foaming agent; (e) water; and (f) an organic isocyanate. The invention further relates to a hard polyurethane foam preparation method and a thermal insulation component comprising the hard polyurethane foam.

Description

technical field [0001] The present invention relates to a rigid polyurethane foam composition, a method for preparing the rigid polyurethane foam and a thermal insulation component comprising the rigid polyurethane foam, in particular to a rigid polyurethane foam suitable for rapid demoulding of a door body Foam compositions, methods of making said rigid polyurethane foams, and insulation assemblies comprising said rigid polyurethane foams. Background technique [0002] In the manufacturing industry of refrigeration equipment such as refrigerators, the demoulding time of the foaming process, as the main factor affecting production efficiency, has always been a major technical bottleneck that plagues many companies, which seriously affects the improvement of refrigerator production efficiency. [0003] At present, the demoulding time of the refrigerator box in the industry is generally ≤300s, and the demoulding time of the door body is generally ≥330s, such as 330s for steel ...

Claims

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Application Information

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IPC IPC(8): C08G18/76C08G18/66C08G18/48C08J9/14C08G101/00
CPCC08G18/1816C08G18/482C08G18/4883C08G18/5021C08G18/7664C08J9/08C08J9/141C08J2203/02C08J2203/14C08J2203/184C08J2375/08C08G2110/0025
Inventor 赵士虎李彩侠朱洪阳胡俊生
Owner HEFEI HUALING CO LTD
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