Utilizing recycled waste rigid polyurethane foam to make insulation pipe material, insulation pipe and manufacturing method

Abstract

The invention relates to a heat preservation tube material prepared by recycling waste hard polyurethane foamed plastic, a heat preservation tube and a manufacturing method. The heat preservation tube material is prepared from the following components in parts by weight: 80 to 90 parts of polyether polyol, 10 to 20 parts of a liquid oligomer polyhydric alcohol mixture of waste polyurethane hard foamed plastic glycolysis product, 1.0 to 1.5 parts of water, 1.5 to 3.0 parts of a surface active agent, 0.4 to 1.5 parts of a reaction type amine catalyst, 0.3 to 1 part of a conventional amine catalyst, 0 to 1.5 parts of a cross-linking agent, 30 to 50 parts of a foaming agent and 145 to 150 parts of polymerized MDI system isocyanate as a black material. The pollution to the environment is reduced, and cyclic utilization of resources is realized, so that the condition of producing the heat preservation tube by recycling hard polyurethane foam becomes possible, and the production cost is reduced.

Description

technical field [0001] The invention relates to a thermal insulation pipe material, a thermal insulation pipe and a manufacturing method using recycled waste rigid polyurethane foam plastics, which are used in central heating pipe networks. Background technique [0002] With the continuous improvement of people's awareness of environmental protection, especially in today's sustainable development, the rational use of resources has been mentioned as an important strategic height. Rigid polyurethane foam is a thermosetting material with a three-dimensional network structure. Due to its excellent performance, it has been widely used, resulting in the pollution of the environment caused by waste rigid polyurethane foam. [0003] One of the traditional treatment methods is land burial and the other is incineration. No matter which method is used, it will pollute the environment and waste resources at the same time. If the waste polyurethane foam is recycled and reused, the poll...

AI Technical Summary

Problems solved by technology

Due to its excellent performance, it has been widely used, resulting in the pollution of the environment caused by waste rigid polyurethane foam.

[0003] One of the traditional treatment methods is land burial and the other is incineration. No matter which method is used, it will pollute the environment and waste resources at the same time.

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