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A durable coating for release of glass forming molds

A glass forming and durability technology, applied in the direction of coating, etc., can solve the problems of increasing the difficulty of crack propagation, loss of crack propagation energy, etc., and achieve the effects of long service life, cost saving and super lubricating ability

Active Publication Date: 2020-09-04
SHANGQIU NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cracks between boron nitride grains will be deflected when encountering silicon carbide hard particles. This deflection loses the energy of crack propagation and increases the difficulty of crack propagation.

Method used

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  • A durable coating for release of glass forming molds

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] The durable coating used for demoulding of glass forming molds in this embodiment is made of the following raw materials in weight ratio: 30% hexagonal boron nitride, 5% silicon carbide, 2% graphene, 5% aluminum dihydrogen phosphate, Sodium tripolyphosphate 0.2%, 1% Deqian defoamer 6800, the balance is water. After the above-mentioned raw materials are prepared according to the weight ratio, under the condition of the ball-to-material ratio of 10:1, ball mill for 8 hours to make a durable coating for demoulding of glass forming molds.

Embodiment 2

[0013] The durable coating used for demoulding of glass forming molds in this embodiment is made of the following raw materials in weight ratio: 50% hexagonal boron nitride, 10% silicon carbide, 5% graphene, 20% aluminum sulfate, hexabia Sodium phosphate 0.2%, 0.3% Deqian defoamer 6500, the balance is water. After the above-mentioned raw materials are prepared according to the weight ratio, under the condition of the ball-to-material ratio of 10:1, ball mill for 8 hours to make a durable coating for demoulding of glass forming molds.

Embodiment 3

[0015] The durable coating used for demoulding of glass forming molds in this embodiment is made of the following raw materials in weight ratio: 40% hexagonal boron nitride, 8% silicon carbide and 4% graphene, 10% aluminum sol, diphosphoric acid Tetrasodium 0.2%, 0.5% Deqian defoamer 5500, the balance is water. After the above-mentioned raw materials are prepared according to the weight ratio, under the condition of the ball-to-material ratio of 10:1, ball mill for 8 hours to make a durable coating for demoulding of glass forming molds.

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Abstract

The invention relates to a durable boron nitride paint used for glass forming die demoulding. The durable boron nitride paint is prepared from following raw materials, by weight, 30% to 50% of hexagonal boron nitride, 5% to 10% of graphene, 2% to 5% of silicon carbide, 5% to 20% of a high temperature binder, 0.2% to 1% of a dispersant, a defoaming agent and water through 8h of ball milling. An aqueous system is adopted by the durable boron nitride paint, no harmful substance is volatilized during using process; the durable boron nitride paint is clean and environmentally friendly, and possesses good adhesiveness; cracking or peeling is not caused; adding of graphene and silicon carbide is capable of providing the durable boron nitride paint with super lubricating capacity, and demoulding of glassware is more convenient to realize; at the same time, silicon carbide is capable of increasing the difficulty of matrix crack propagation, enhancing the durability of the durable boron nitridepaint, providing the durable boron nitride paint with relatively long service life, reducing cost, and improving the economic benefits of enterprises.

Description

technical field [0001] The invention belongs to the technical field of paint preparation, and in particular relates to a durable paint for demoulding a glass forming mold. Background technique [0002] In the process of pressing and forming glass products in metal molds. The working temperature of the mold surface is generally 600~900°C. At such a temperature, the glass liquid is easy to adhere to the mold surface. Therefore, lubricant must be applied to the working surface of the metal mold. The performance requirements of coatings in the production process of glass products mainly include three aspects: lubricating ability, service life and pollution status. With the development of coating technology, the problem of environmental pollution has been initially resolved. Most of the current coatings use environmentally friendly inorganic materials as the collective and water as the carrier. For example, the release agent prepared by patents CN106167353A, CN108018114A and C...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D1/00C09D7/61
Inventor 孙家书张向飞臧运波邵梅玲蒲三旭翟滨
Owner SHANGQIU NORMAL UNIVERSITY