Rigid polyurethane foam prepared by using rape seed oil

Abstract

This invention is preparation method of rigid polyurethane foam plastics with rape oil. The procedure is as followings: 1) adds alcohol to alcoholysis with the precence of rape oil and catalysis, obtain mixed unsaturated fatty acid monoester. 2) Add epoxidation agent to get mixed epoxidated fatty acid ester. 3) React with nucleophilic reagent to get mixed hydroxy fatty acid monoesters-biological polyatomic alcohol. 4) Mix with auxiliary catalysis, foam stabilizer and water to form polyether polyol. 5) Mix with foaming agent and isocyanate to obtain rigid polyurethane foam plastics. This invention has a high compatibility with alkane foaming and low cost. It's a good heat insulating material.

Description

technical field

[0001] The invention relates to a rigid polyurethane foam prepared from rapeseed oil, which belongs to the field of polyurethane synthetic materials. Background technique

[0002] Rigid polyurethane foam is widely used in household refrigerators, freezers, building insulation and pipeline industries due to its excellent thermal insulation performance, good plasticity and processing performance. It is a foam product formed by combining polyether (ester) polyol, foaming agent and isocyanate through chemical reaction under the action of a catalyst. Among them, polyether (ester) polyol is the main raw material for preparing polyurethane foam.

[0003] With the rapid development of the global economy, the global demand for all polyols including the above-mentioned polyether (ester) polyols is growing rapidly. However, the existing polyols are all downstream products of petroleum, and due to the shortage of petroleum resources, the prices of these products are re...

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