Ethanolamine alkaline blowing agent and use for preparing polyurethane solar foam material

A foaming agent, polyurethane technology, applied in the preparation of polyurethane solar foam materials, the application of polyurethane solar foam materials, in the field of alkaline ethanolamine foaming agents, can solve the problem of uneven cell size and uneven cell distribution , affecting the strength and thermal insulation properties of foamed materials

Active Publication Date: 2021-03-19
SHANDONG UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In short, the foaming agent in the prior art cannot be dispersed into the foaming composition at the molecular level, resulting in uneven distribution of cells and uneven cell size, which ultimately affects the strength performance and thermal insulation of the foamed material nature

Method used

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  • Ethanolamine alkaline blowing agent and use for preparing polyurethane solar foam material

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0071] 3kg of 40% methylamine aqueous solution (molecular weight 31) is added in a transparent quartz glass reactor, stirred and dissolved, and the reactor is sealed, then under constant stirring, the temperature is controlled between 40-65°C, and carbon dioxide is passed into the In the reactor, control the pressure not to be higher than 0.3MPa, and control the temperature for 10 hours to react. After cooling down to below 40°C, release the pressure and release the product. Compound 1 was obtained. pH≥8.0, decomposition temperature is 42°C-70°C.

preparation example 2

[0073] 3kg of 70% ethylamine aqueous solution (molecular weight 45) is added in a transparent quartz glass reactor, stirred and dissolved, and the reactor is sealed, then under constant stirring, the temperature is controlled between 40-65°C, and carbon dioxide is passed into the In the reactor, control the pressure not to be higher than 0.3MPa, and control the temperature for 10 hours to react. After cooling down to below 40°C, release the pressure and release the product. Compound 2 was obtained. pH≥8.2, decomposition temperature is 42°C-70°C.

preparation example 3

[0075] Add 3kg of hexylamine (molecular weight 101) and 1.6kg of water into a transparent quartz glass reactor, stir to dissolve, seal the reactor, and then control the temperature between 40-65°C under constant stirring, and pass carbon dioxide through Put it into the reactor, control the pressure not higher than 0.3MPa, control the temperature and react for 10 hours, let off the pressure and release the product after cooling down to below 40°C. Compound 3 was obtained. pH≥8.2, decomposition temperature is 42°C-70°C.

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Abstract

An ethanolamine alkaline foaming agent and use thereof for preparing polyurethane solar foam materials. Disclosed is a polyurethane alkaline foaming agent comprising a primary amine salt and an ethanolamine salt, the ethanolamine alkaline foaming agent of the polyurethane alkaline foaming agent and use thereof for preparing the polyurethane solar foam materials. The alkaline foaming agent has a pHof between 8.5 and 9.5; the foaming agent comprises: 1) a first compound mixture (M1) comprising an organic primary amine salt compound having a following general formula (I): A<->[B<+>]p(I), whereinB<+> is a cation of a +1 valent organic primary amine B, and A<-> represents CO3<2->, HCO3<->, or a combination of CO3<2-> and HCO3<->; and 2) a second compound mixture (M2) comprising a N-monohydroxyethyl-ammonium carbonate compound with a general formula (II) and N,N'-bis(hydroxyethyl)-ammonium carbonate compound with a general formula (II): (RN+H3)(N+H4)CO3<2->(II), or (RN+H3)2CO3<2->(III), wherein R represents a hydroxyethyl group, and the molar ratio of the compound of the general formula (II) to the compound of the general formula (III) is from 1:0 to 1:1.0. The foaming agent is suitable for preparing the polyurethane solar foam materials.

Description

technical field [0001] The present invention relates to having as CO 2 The use of organic amine salt compounds of donor anions as blowing agents, more specifically, to provide not only CO 2 The anion of the donor and the application of the new organic ammonium salt compound with the organic primary amine as the catalytic group and the solubilizing group in the preparation of the polyurethane solar foam material. More specifically, it relates to alkaline ethanolamine blowing agents and their use for the preparation of polyurethane solar foam materials. [0002] technical background [0003] As a new polymer material, polyurethane rigid foam is light in weight, high in strength and has extremely low thermal conductivity. Automobiles, refrigerators and freezers and other household appliances and other industries. The most important raw material in the production of rigid polyurethane foam is the blowing agent. At present, these blowing agents are chlorofluorocarbons except c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J9/08C08J9/14C08G18/76C08G18/66C08G18/48C08G18/42C08G18/32C08G18/18C08G101/00
CPCC08G18/18C08G18/3271C08G18/3275C08G18/4018C08G18/6655C08G18/6688C08G18/7671C08J9/08C08J9/144C08J2203/142C08J2203/204C08J2375/06C08J2375/08C08G2110/0025C08G2110/005
Inventor 毕戈华毕玉遂
Owner SHANDONG UNIV OF TECH
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