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Rapid demolding combined polyether, and polyurethane and preparation method thereof

A technology of combining polyether and demoulding, applied in the field of rapid demoulding combined polyether and its polyurethane and preparation, can solve the problems of controlled production efficiency, inability to meet production, etc. Effect of low temperature shrinkage resistance

Inactive Publication Date: 2019-07-19
GUANGZHOU LONGTANG POLYURETHANE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the demoulding time of the combined polyether products used in most domestic refrigerators and freezers is 180-300 seconds, and the fastest reaches 180 seconds, but it still cannot meet the production needs, and the production efficiency is under control.

Method used

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  • Rapid demolding combined polyether, and polyurethane and preparation method thereof
  • Rapid demolding combined polyether, and polyurethane and preparation method thereof

Examples

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Effect test

Embodiment 1

[0041] A kind of quick-release polyurethane, comprises quick-release combination polyether and black material, wherein, quick-release combination polyether is made up of following components by weight: 15 parts of sugar ethers, 15 parts of sorbitol ethers, 25 parts Parts of oil ether, 40 parts of amine ether, 5 parts of low viscosity ether, 2.5 parts of polyether modified silicone oil, 12.5 parts of blowing agent, 1 part of amine catalyst, 1 part of organometallic catalyst, 1.5 parts of TMR-2 and 2.3 parts of water ; The combined polyether and black material are mixed in a ratio of 1:1.25;

[0042] The preparation method is a method for quickly demolding polyurethane, comprising the following steps:

[0043] 1) Weighing sugar ether, sorbitol ether, oil ether, low-viscosity ether, polyether-modified silicone oil, amine catalyst, organometallic catalyst, TMR-2 and water, and mixing to obtain the first material;

[0044] 2) Mixing the first material and the blowing agent of the ...

Embodiment 2

[0047] A kind of quick release polyurethane, comprises quick release combination polyether and black material, wherein, quick release combination polyether is made of the following components by weight: 20 parts of sugar ethers, 20 parts of sorbitol ethers, 20 parts Parts of oil ether, 35 parts of amine ether, 5 parts of low viscosity ether, 2.5 parts of polyether modified silicone oil, 12 parts of blowing agent, 1 part of amine catalyst, 1 part of organometallic catalyst, 1.5 parts of TMR-2 and 2.3 parts of water ; The combined polyether and black material are mixed in a ratio of 1:1.25;

[0048] The preparation method is a method for quickly demolding polyurethane, comprising the following steps:

[0049] 1) Weighing sugar ether, sorbitol ether, oil ether, low-viscosity ether, polyether-modified silicone oil, amine catalyst, organometallic catalyst, TMR-2 and water, and mixing to obtain the first material;

[0050] 2) Mixing the first material and the blowing agent of the f...

Embodiment 3

[0053] A kind of quick-release polyurethane, comprising quick-release combined polyether and black material, wherein, quick-release combined polyether is made of the following components by weight: 25 parts of sugar ethers, 25 parts of sorbitol ethers, 15 parts Parts of oil ether, 30 parts of amine ether, 5 parts of low viscosity ether, 2.5 parts of polyether modified silicone oil, 12 parts of blowing agent, 1 part of amine catalyst, 1 part of organometallic catalyst, 1.5 parts of TMR-2 and 2.3 parts of water ; The combined polyether and black material are mixed in a ratio of 1:1.25;

[0054] The preparation method is a method for quickly demolding polyurethane, comprising the following steps:

[0055] 1) Weighing sugar ether, sorbitol ether, oil ether, low-viscosity ether, polyether-modified silicone oil, amine catalyst, organometallic catalyst, TMR-2 and water, and mixing to obtain the first material;

[0056] 2) Mixing the first material and the blowing agent of the formul...

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Abstract

Rapid demolding combined polyether comprises the following components in parts by weight: 50-60 parts of a first type of polyether polyol, 30-40 parts of a second type of polyether polyol, 5-10 partsof a third type of polyether polyol, 5-6 parts of an auxiliary agent, 12-13 parts of a foaming agent and 2-2.5 parts of water. According to the combined polyether, high-functionality sugar ether, sorbitol ether and oil ether are used as the first type of polyether polyol, and more high-functionality amine ether is used as the second type of polyether polyol, so that the mixing affinity and the crosslinking degree of a reaction system are effectively improved, and curing is accelerated; and polyether modified silicone oil is used as a surfactant to improve the intersolubility between componentsin the system and a black material, an amine catalyst, an organic metal catalyst and a trimerization catalyst are used as composite catalysts, the foaming time is balanced, and the demolding effect is synergistically improved.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a rapid demoulding composite polyether, polyurethane and a preparation method thereof. Background technique [0002] Polyurethane rigid foam combination polyether is one of the main raw materials of polyurethane rigid foam, also known as white material, which is called black and white material together with polymeric MDI. Suitable for building insulation, cold storage, solar energy, water heaters, cold storage, constant temperature storage, beer cans, refrigeration and other occasions that require thermal insulation and cold storage. [0003] Polyurethane combination polyether is composed of a variety of polyether polyols (referred to as monomeric polyether) together with surfactants, catalysts, foaming agents and other additives. It is often used in various household appliances in the insulation and refrigeration industries, such as refrigerators, freezers and so on. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/48C08J9/04C08G101/00
CPCC08G18/4812C08G2101/00C08J9/04C08J2375/08
Inventor 陈淑华
Owner GUANGZHOU LONGTANG POLYURETHANE
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