Die for building materials products and preparation method thereof

Abstract

The invention discloses a die for building materials products and a preparation method thereof. The die provided by the invention contains a preformed female die and is prepared by the following steps of: cleaning the female die by an air pump, coating a mold releasing agent on the surface of the female die, uniformly laying a silica gel surface layer on the surface of the female die coated with the mold releasing agent to form a nonstick material surface layer, placing a bar of angle iron at each long side of the die; successively laying a silica gel bonding coat and a layer of gauze on the silica gel surface layer after its gelation, laying an epoxy resin bonding layer and a layer of glass fiber grid cloth after coagulation of the silica gel bonding layer to form a bonding layer; laying an insulation plate and flat iron on the bonding layer, pressing tightly by using a steel plate and simultaneously installing seal section bars at the four corners of the die; laying epoxy resin mortar on the surface of the insulation plate to form a light filling layer; laying a layer of glass fiber biaxial cloth on the light filling layer, and laying an epoxy adhesive coat on the glass fiber biaxial cloth to form a hard base material. The die provided by the invention has a simple structure, is easy to demould, and can be used to effectively guarantee the quality of moulded products. In the meantime, the preparation method provided by the invention is convenient to operate, requires low cost, and is easy to maintain.

Description

technical field [0001] The invention relates to a mold and a preparation method thereof, in particular to a mold for building material products and a preparation method thereof. Background technique [0002] At present, the molds used in building materials are basically glass fiber reinforced plastic and silicone molds. The production of glass fiber reinforced plastic molds belongs to the traditional craft, which has the advantages of fast forming and high hardness. Chinese patent CN 101579899 A and Chinese patent CN 201320814 Y respectively describe two kinds of FRP mold manufacturing processes. However, the FRP mold prepared by the traditional process has the following disadvantages: 1) The release agent needs to be brushed before each use, which increases the manufacturing process and cost, and the release agent will pollute the surface of the building material product and affect the quality of the building material product; 2) It is very easy to cause the product to be...

AI Technical Summary

Problems solved by technology

However, the FRP mold prepared by the traditional process has the following disadvantages: 1) The release agent needs to be brushed before each use, which increases the manufacturing process and cost, and the release agent will pollute the surface of the building material product and affect the quality of the building material product; 2) It is very easy to cause the product to be heated unevenly and deform the product; 3) If the local temperature is too high, the product or the mold will be damaged; 4) The copper pipe used for water bath heating will have scale after long-term use, which will affect the heat conduction effect; 5) The production process of the glass fiber reinforced plastic mold easy to cause environmental pollution

6) The quality is too heavy

However, silicone molds have the following disadvantages: 1) Silicone is a soft material that is easily deformed during use, which affects the shape and size of building materials; difficulty

3) The amount of silica gel is large and the cost is high

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