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Solvent type wax release agent and preparation method thereof

A solvent-based, release agent technology, applied in the field of solvent-based wax release agent and its preparation, can solve the problems of poor thixotropy, poor stability, poor high temperature resistance, etc., achieve good coating thixotropy, improve high temperature resistance Performance, the effect of good coating stability

Active Publication Date: 2017-01-25
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the existing solvent-based wax release agents have poor high temperature resistance when demoulding at high temperatures. After the finished product is often poured and solidified at high temperature, the demoulding performance is poor. poor surface appearance
Existing solvent-based wax release agents have problems of poor construction adaptability, such as poor thixotropy during brushing, uncontrollable drying time of wax surfaces after brushing, and poor stability of residual materials in finished material containers after repeated brushing
Moreover, the existing solvent-based wax release agent has a heavy odor, is not an environmentally friendly solvent, and is more serious to human injury and environmental pollution
The above-mentioned technical defects of existing solvent-based wax release agents limit its practical application. Therefore, developing a solvent-based wax release agent with high temperature resistance, ideal construction adaptability, environmental protection and non-toxicity needs to be solved by those skilled in the art. technical problem

Method used

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  • Solvent type wax release agent and preparation method thereof
  • Solvent type wax release agent and preparation method thereof
  • Solvent type wax release agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment 1 Preparation of solvent-based wax release agent

[0033] (1) Mix 5.0kg of modified polytetrafluoroethylene wax, 3.0kg of modified silicone wax, 16.0kg of microcrystalline wax and 6.0kg of paraffin wax, and heat to 125°C for melting;

[0034] (2) After the mixture in step (1) is completely melted, slowly add 35.0 kg of hydrodesulfurized and dearomatized gasoline at 110° C. and 60 rpm stirring condition, and lower the temperature to 80° C. at 60 rpm stirring condition. Slowly add 35.0 kg of hydrodesulfurization and dearomatization petroleum ether under stirring conditions of 80°C and 60 rpm;

[0035] (3) After the hydrodesulfurization and dearomatization of petroleum ether is completed, the temperature is slowly lowered to 55° C. under stirring at 60 rpm, and the product is packaged and cooled to room temperature to obtain a finished solvent-based wax release agent.

Embodiment 2

[0036] Example 2 Preparation of solvent-based wax release agent

[0037] (1) Mix 10.0kg of modified polytetrafluoroethylene wax, 3.0kg of modified silicone wax, 12.0kg of microcrystalline wax and 5.0kg of paraffin wax, and heat to 95°C for melting;

[0038] (2) After the mixture in step (1) is completely melted, slowly add 30.0 kg of hydrodesulfurized and dearomatized gasoline at 100° C. and stirring at 75 rpm, and lower the temperature to 75° C. while stirring at 75 rpm. Slowly add 45.0 kg of hydrodesulfurization and dearomatization petroleum ether under stirring conditions of 75°C and 75 rpm;

[0039] (3) After the hydrodesulfurization and dearomatization petroleum ether is added, the temperature is slowly lowered to 48° C. under stirring at 75 rpm, and the product is packaged and cooled to room temperature to obtain a finished solvent-based wax release agent.

Embodiment 3

[0040] Example 3 Preparation of solvent-based wax release agent

[0041] (1) Mix 18.0kg modified polytetrafluoroethylene wax, 2.0kg modified silicon wax, 8.0kg microcrystalline wax and 2.0kg paraffin wax, heat to 135°C for hot melting;

[0042] (2) After the mixture in step (1) is completely melted, slowly add 14.0 kg of hydrodesulfurized and dearomatized gasoline at 120° C. and 15 rpm stirring condition, and lower the temperature to 95° C. at 15 rpm stirring condition. Slowly add 56.0 kg of hydrodesulfurization and dearomatization petroleum ether under stirring conditions of 95°C and 15 rpm;

[0043] (3) After the hydrodesulfurization and dearomatization of petroleum ether is completed, the temperature is slowly lowered to 75° C. under stirring at 15 rpm, and the product is packaged and cooled to room temperature to obtain a finished solvent-based wax release agent.

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Abstract

The invention relates to the field of release agents and discloses a solvent type wax release agent and a preparation method thereof. The solvent type wax release agent is prepared from, by weight, 5-18 parts of modified polytetrafluoroethylene wax, 2-3 parts of modified silicon wax, 8-16 parts of microcrystalline wax, 2-6 parts of paraffin, 14-35 parts of a high-boiling-point environment-friendly solvent and 35-56 parts of a low-boiling-point environment-friendly solvent. The preparation method includes steps: 1) dissolving a solid wax mixture at a high temperature; 2) adding the high-boiling-point environment-friendly solvent under a condition of high-temperature low-speed stirring, and cooling and adding the low-boiling-point environment-friendly solvent under a condition of low-speed stirring; 3) after low-speed stirring for cooling, discharging, packaging, and cooling to the room temperature to obtain a product. The solvent type was release agent has excellent high temperature resistance and coating performances. The preparation method of the solvent type wax release agent is simple in process, low in cost and beneficial for industrial production.

Description

technical field [0001] The invention relates to the field of release agents, in particular to a solvent-based wax release agent and a preparation method thereof. Background technique [0002] In the resin mold manufacturing industry and the industry of using molds to produce infusion products, mold release agents are often used. This is because the mold release agent can prevent resin, rubber and plastic products from adhering to the mold, avoiding poor appearance of the product and a decline in the pass rate Case. [0003] At present, in the industry that requires high smoothness of the mold surface, solvent-based wax release agent is the necessary release agent. Because it can be painted and polished multiple times, it can make the inner surface of the mold have a high degree of smoothness, and at the same time play a role in demoulding, and finally can obtain a finished product with a smooth outer surface and fewer defects, which can greatly reduce the amount of finished...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C33/62
CPCB29C33/62
Inventor 宋巍姬文晋张磊余坚郑育英殷莉
Owner GUANGDONG UNIV OF TECH
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