Methods of minimising density gradients in rigid polyurethane foams

被引：12

作者：

Harbron, DR ^{[1
]}

Page, CJ ^{[1
]}

Scarrow, RK ^{[1
]}

机构：

[1] AWE PLC, Reading RG7 4PR, Berks, England

来源：

JOURNAL OF CELLULAR PLASTICS | 2001年 / 37卷 / 01期

关键词：

Amines - Catalysts - Composition effects - Density (specific gravity) - Polyurethanes - Thermal effects;

D O I：

10.1106/7FW8-15L5-3N83-KQX3

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

This paper discusses methods to minimise density gradients in moulded rigid polyurethane foams of densities 0.35 g/cc and 0.80 g/cc. Methods examined were changing the nature and concentration of the amine catalyst, the use of high functionality isocyanates and varying the mould temperature. All methods can reduce the density gradient in moulded foam compared to a control formulation.

引用

页码：43 / 57

页数：15