Foaming raw material of bio-based polyurethane foaming plastic foamed by pentane serving as foaming agent and product thereof

Abstract

The invention relates to a foaming raw material of bio-based polyurethane foaming plastic foamed by pentane serving as a foaming agent and a product thereof. The conventional pentane-foamed bio-based polyurethane foaming plastic has poor dimensional stability. Therefore, the foaming raw material comprises a material A and a material B separately packaged, wherein the material A consists of 100 weight parts of polyether polyols, 2 to 3 weight parts of foam stabilizer, 1.0 to 1.5 weight parts of deionized water, 2 to 4 weight parts of composite catalyst and 12 to 14 weight parts of cyclopentane or isopentane; and the material B comprises 135 to 155 weight parts of PAPI, wherein the 100 weight parts of polyether polyols in the material A consists of 57 to 62 weight percent of bio-based polyether polyols, 15 to 20 weight percent of petroleum-based polyether polyols with the functionality of 3 or 4, 8 to 12 weight percent of high-activity polyether polyols and 15 to 20 weight percent of petroleum-based polyether polyols with the functionality of 5 or 6. The foaming raw material is suitable to be used as a thermal insulation material of electric equipment.

Description

technical field

[0001] The invention relates to a bio-based polyurethane foam foaming raw material with pentane as a foaming agent and its products. Background technique

[0002] According to the existing formula, if the rigid polyurethane foam adopts cyclopentane as blowing agent, the consumption of bio-based polyether polyol is high (such as exceeding 10% of the total weight of raw materials), and the dimensional stability of the obtained rigid polyurethane foam will be reduced. Therefore, when producing polyurethane insulation layers in refrigerators and other electrical equipment, the industry always avoids using pentane and bio-based polyether polyols at the same time, or uses them at the same time, but the amount of bio-based polyether polyols is negligible Almost, according to the definition of relevant European agencies: the amount of bio-based polyether polyol is less than 20%, which cannot be called bio-based polyurethane foam. Contents of the invention

[0003] ...