Urea-formaldehyde foamed plastic for heat preservation and insulation and preparation method and apparatus thereof

Abstract

The invention provides urea-formaldehyde foamed plastic for heat preservation and insulation and a preparation method and a preparation apparatus thereof. The urea-formaldehyde foamed plastic for heat preservation and insulation is composed of the following raw materials in percentage by mass: 40-45% of urea-formaldehyde resin, 46-50% of water, 0.4-0.5% of a surfactant, 2-3% of a curing agent, and the balance of inorganic filler. The preparation method comprises the following steps: diluting urea-formaldehyde resin, and stirring for completely dissolving the urea-formaldehyde resin so as to obtain raw material slurry, wherein the density of the raw material slurry can be arbitrarily adjusted as required; adding the surfactant into the raw material slurry; injecting the raw material slurry in which the surfactant is added into a foaming machine, and injecting the curing agent and inorganic filler into the foaming machine; and uniformly stirring the raw materials injected into the foaming machine so as to obtain a foaming body, and conveying the foaming body to a finished product box to cure and mold. The preparation apparatus comprises a raw material solution pool, a raw material delivery pump, an air pump, the foaming machine, a curing agent solution pool, a curing agent delivery pump, a filler pool, a filler pump, a finished product container, a motor and a stirring head.

Description

technical field [0001] The invention relates to a urea-formaldehyde foam plastic for thermal insulation, a preparation method and equipment, and belongs to the technical field of urea-formaldehyde foam plastic, preparation method and equipment. Background technique [0002] Existing insulation materials such as polystyrene boards and polyurethane boards are flammable products, which will produce a large amount of toxic and harmful smoke when burned, have disadvantages such as polluting the environment, and also have certain hidden safety hazards, and must be produced in factories. It cannot be poured on site, requires high production equipment, occupies a large space, pollutes the environment, and has certain damage to the health of processing and production personnel. When using and installing, splicing and installation are required, the requirements for construction facilities are high, and a large amount of corner waste and other garbage will be generated. Contents of t...

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problems in the above-mentioned prior art, that is, the existing thermal insulation materials such as polystyrene boards and polyurethane boards are inflammable products, which will produce a large amount of toxic and harmful smoke when burning, and pollute the environment. There are still some potential safety hazards, and it must be produced in a factory, and cannot be poured on site. The production equipment requires high requirements, occupies a large space, pollutes the environment, and has certain damage to the health of processing and production personnel.

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