Polymer foaming agent for thermosetting foam and preparation method of thermosetting foam

Abstract

The invention discloses a polymer foaming agent for thermosetting foam. The polymer foaming agent is prepared from HFO-1336mzz (cis), HCFO-1233zd (trans), HFE-254pc and cyclopentane. The invention also discloses a preparation method of the thermosetting foam. The method comprises the steps as follows: the foaming agent is prepared from HFO-1336mzz (cis), HCFO-1233zd (trans), HFE-254pc and cyclopentane; sucrose polyether, glycerin polyether and sorbitol polyether are uniformly mixed for preparation of base polyether; a white material is prepared from base polyether, organic silicone oil, an amine catalyst PC-5, water and the foaming agent; a mold is cleared and the temperature of the mold is controlled; the mold is filled with the white material, overfilling foam is foamed, and the thermosetting foam is prepared after demolding. The composite foaming medium has the maximum ODP (ozone depletion potential) of 0.00024, belongs to olefin, has short atmosphere life, cannot effectively damagethe ozone layer and has the maximum GWP (global warming potential) lower than 90, which is lower than 100 required by Japan and far lower than 150 required by Europe and America. The polymer foamingagent completely meets environmental protection requirements for protection of the ozone layer and reduction of the greenhouse effect.

Description

technical field [0001] The invention belongs to the field of thermosetting foams, in particular to a polymer foaming agent for thermosetting foams and a preparation method for thermosetting foams. Background technique [0002] Since DuPont proposed CFC-11 as a blowing agent in 1985, polyurethane foam has been widely used. However, because CFC-11 has a high ODP value (Ozone Depletion Potential, ozone depletion potential value), according to the Montreal Convention, it was phased out at an accelerated rate around 2000. A series of substitution work was carried out later, such as HFC-245fa, R-134a, HCFC-141b, pentane series, etc. [0003] In the latest Paris Agreement in November 2016, more than 170 parties reached an agreement on energy conservation and emission reduction, and new refrigerants and blowing agents with low greenhouse effect potential should be used in the refrigerator and air-conditioning industries. Starting from 2020, the GWP value (Global Warming Potential)...

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Problems solved by technology

This patent is the same as the above-mentioned US9206297, which covers a wide range, but the specific examples do not contain all the chemical formulas of this application.