Polyurethane foam material with carbon dioxide as environment-friendly latent foaming agent and preparing method thereof

An environmentally friendly, polyurethane foam technology, applied in the field of rigid polyurethane foam material preparation, to achieve the effect of excellent performance

Inactive Publication Date: 2017-01-04
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

None of the existing research reports involve the use of diethanolamine and carbon dioxide to fix carbon dioxide to prepare ammonium dihydroxyethyl carbamate as an environmentally friendly latent blowing agent to prepare rigid polyurethane foam

Method used

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  • Polyurethane foam material with carbon dioxide as environment-friendly latent foaming agent and preparing method thereof
  • Polyurethane foam material with carbon dioxide as environment-friendly latent foaming agent and preparing method thereof
  • Polyurethane foam material with carbon dioxide as environment-friendly latent foaming agent and preparing method thereof

Examples

Experimental program
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Embodiment

[0020] (1) The preparation method of the ammonium salt described in the formula of table 1 is as follows:

[0021] Diethanolamine was added into a three-necked flask, and reacted for 7 hours at a stirring speed of 250 rpm and a carbon dioxide feeding rate of 60 ml / min to obtain a transparent viscous ammonium salt (ammonium dihydroxyethylcarbamate).

[0022] (2) In parts by weight, take polyether polyol (polyether 430 produced by Changzhou Luoyang New Material Thermal Insulation Material Factory), ammonium dihydroxyethyl carbamate, isocyanate (produced by Yantai Wanhua Chemical Group Co., Ltd. PM-200), foam stabilizer 8804, catalyst PC-8, the formula of embodiment is as shown in table 1.

[0023] Table 1 is the raw material formula of rigid polyurethane foam

[0024] Raw material number Example 1 Example 2 Example 3 Example 4 Example 5 Polyether polyol 430 90.00 80.00 70.00 60.00 50.00 Ammonium Dihydroxyethylcarbamate 10.00 20.00 30.00 40....

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Abstract

The invention relates to a polyurethane foam material with carbon dioxide as an environment-friendly latent foaming agent. The latent foaming agent is prepared from, by weight, 50-90 parts of polyether polyol, 10-50 parts of dihydroxyethyl ammonium carbamate, 125-212 parts of isocyanate, 2-5 parts of foam stabilizer and 0.5-1 part of catalyst. The preparing method of the polyurethane foam material includes the following steps that dihydroxyethyl ammonium carbamate is prepared; polyether polyol, dihydroxyethyl ammonium carbamate, foam stabilizer and catalyst are added into a plastic beaker to obtain a uniform mixture; isocyanate is added, and foaming is carried out freely at the normal temperature. The preparing method has the advantages that diethanol amine reacts with carbon dioxide to fix carbon dioxide so as to prepare dihydroxyethyl ammonium carbamate, the dihydroxyethyl ammonium carbamate serves as the environment-friendly latent foaming agent to prepare rigid polyurethane foam, which achieves environment protection and environment friendliness, and the rigid polyurethane foam is good in performance.

Description

technical field [0001] The invention belongs to the technical field of rigid polyurethane foam preparation, and relates to a polyurethane foam using carbon dioxide as an environment-friendly latent foaming agent and a preparation method thereof. Background technique [0002] Polyurethane foam represents a wide variety of thermosetting foaming materials, which are widely used due to their light weight, good thermal insulation, strong adhesion to other materials, high compressive strength and good dimensional stability. application. The polyurethane foaming mechanism can be based on chemical or physical foaming. Azo compounds, such as azodicarbonamide and azobisisobutyronitrile, are typical chemical blowing agents that are widely used. One fluorodichloroethane (HCFC-141b) is the main chemical blowing agent. Although these blowing agents are widely used and have obvious effects, they are all based on organic compounds derived from fossil fuels, and their production and use w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/48C08J9/08C08G101/00
CPCC08G18/48C08G18/14C08G2101/00C08J9/08C08J2203/02C08J2375/08
Inventor 任强陈旭亮徐海进宋艳吴盾汪称意李坚
Owner CHANGZHOU UNIV
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