Phenolic foam thermal-insulation material and preparation method thereof

Abstract

The invention discloses a phenolic foam thermal-insulation material and a preparation method thereof. The material is prepared from raw materials in parts by weight as follows: 80-90 parts of phenolicresin, 10-15 parts of glass fiber, 2-4 parts of expansible graphite, 7-12 parts of a silane coupling agent, 10-15 parts of a foaming agent and 8-12 parts of a curing agent. The phenolic foam thermal-insulation material is mainly applied to thermal insulation materials of flat-plate solar collectors and has good heat resistance, insulativity, corrosion resistance, wide work temperature range and lower production cost; the brittleness of phenolic foam is improved and the compressive strength and mechanical performance of the phenolic foam are improved to a certain extent by the aid of the addedglass fiber and expansible graphite, the service life of the flat-plate solar collectors can be prolonged, and the quality stability of the flat-plate solar collectors can be improved.

Description

technical field [0001] The invention relates to the field of thermal insulation materials, in particular to a phenolic foam thermal insulation material and a preparation method thereof. Background technique [0002] With the increasing shortage of energy and the increasing pressure on environmental protection, all countries in the world have begun to promote the development of renewable energy. Among them, solar energy is the most widely used and developed renewable energy with the best development prospects, and has been widely used in all walks of life. , the solar water heater industry is one of them. my country is rich in solar energy resources and has broad prospects for solar energy utilization. At present, it is the first country in the world for the use and production of solar water heaters. [0003] Insulation materials are generally materials with a thermal coefficient of less than or equal to 0.12. The traditional thermal insulation materials are mainly based on...

AI Technical Summary

Problems solved by technology

The phenolic board produced abroad has good thermal insulation performance, but the current domestic promotion efforts are small, and the production technology is relatively backward, and its thermal insulation performance is slightly worse than that of foreign products.

Domestically produced phenolic boards have weaknesses such as easy pulverization, low mechanical strength, brittleness, no extensibility and high water absorption.