Polyurethane foam material and its preparation method

Abstract

The present invention relates to a novel polyurethane foam material and its production method. It is an aliphatic polycarbonate type polyurethane foam material synthesized by using carbon dioxide as initial raw material, in which the carbonate group content is betwene 15%-30%. Its production method adopts the aliphatic polycarbonate polyalcohol which is synthesized by using carbon dioxide and epoxy compound and whose number-average molecular weight is less than 10000, hydroxyl functionality is 2,3 or higher than that and the mole fraction of carbonate group in molecular is between 0.2-0.5; then makes the polyalcohol resin and diisocyanate and / or polycyanate produce reaction in the presence of catalyst, foaming agent, crosslinking or chain extender, foam stabilizing agent and other adjuvant to synthesize said invented product.

Description

technical field

[0001] The invention relates to a novel aliphatic polycarbonate polyurethane foam material with high carbonate content and a preparation method thereof, which uses carbon dioxide as a starting raw material for synthesis. technical background

[0002] The preparation of polyurethane materials with carbon dioxide as a starting material is a new technology developed in recent years, and the obtained polyurethane materials belong to aliphatic polycarbonate polyurethane. This type of polyurethane material has many unique properties. Compared with polyether polyurethane material, its mechanical strength and wear resistance are much better; compared with polyester polyurethane material, it has better low temperature flexibility and hydrolysis resistance. properties and antioxidant properties. In addition, some varieties of such polyurethane materials also have good biodegradability. In the past, aliphatic polycarbonate polyurethane ...