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Non-silicon grease type mold release agent for special-shaped rubber tube

A release agent and rubber technology, which is applied in the field of rubber hose molding and processing for automobiles, can solve the problems of rubber quality and life-span adverse effects, and achieve the effects of excellent isolation effect, easy cleaning, and high solid content

Active Publication Date: 2016-10-05
TIANJIN MODERN VOCATIONAL TECH COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the present invention aims to propose a silicone-free mold release agent for special-shaped rubber tubes, so as to overcome the adverse effects of silicone in the existing mold release agent on the quality and life of rubber

Method used

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  • Non-silicon grease type mold release agent for special-shaped rubber tube
  • Non-silicon grease type mold release agent for special-shaped rubber tube
  • Non-silicon grease type mold release agent for special-shaped rubber tube

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Embodiment 1 prepares polyether surfactant

[0040] Raw materials (parts by weight, 1kg per part by weight, the same below):

[0041] The weight of synthetic polyol polyoxyethylene polyoxypropylene ether A consists of:

[0042] Pentaerythritol: 50 parts; Ethylene oxide: 450 parts; Propylene oxide: 500 parts.

[0043] The weight of synthetic polyol polyoxyethylene polyoxypropylene ether B consists of:

[0044] Pentaerythritol: 50 parts; Ethylene oxide: 120 parts; Propylene oxide: 830 parts.

[0045] The weight of synthetic polyol polyoxyethylene polyoxypropylene ether C consists of:

[0046] Pentaerythritol: 20 parts; Ethylene oxide: 130 parts; Propylene oxide: 850 parts.

[0047] The preparation process of each of the above polyol polyoxyethylene polyoxypropylene ethers is as follows: add polyol and potassium hydroxide according to the weight composition in a high-pressure stainless steel kettle, mix and heat up to 60-80°C, and then add ethylene oxide and ring Prop...

Embodiment 2

[0049] Embodiment 2 Preparation of non-silicone grease type mold release agent for special-shaped rubber tube

[0050] Using the three polyol polyoxyethylene polyoxypropylene ethers obtained in Example 1, the raw materials were mixed uniformly according to the formulas 1 and 2 in Table 2, respectively, to obtain the silicone grease-free mold release agent for special-shaped rubber tubes of the present invention.

[0051]In the production line of rubber hose forming, especially the production line of rubber hose forming processing for automobiles, use cloth, brush or spray gun to clean the surface of metal film tools with 90 and 120 degrees and diameters of 1cm, 2cm, 3cm and 5cm respectively, and directly clean them according to the above The special-shaped rubber tubes obtained in formulas 1 and 2 were painted on the surface of the core type with a silicone-free mold release agent, and then the unshaped EPDM rubber and nitrile rubber tubes were respectively inserted into the mo...

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Abstract

The invention provides a silicon grease-free mold release agent for a special-shaped rubber pipe. The silicon grease-free mold release agent comprises the following components of 26-100 parts of a polyether surfactant, 1-5 parts of an antirust agent, 5-15 parts of alkyl benzene sulfonic acid monoethanolamine and 5-15 parts of fatty acid methyl ester ethoxylate sulfonate. The mold release agent provided by the invention does not contain an organic silicon component, and can meet various requirements of high-temperature resistance, lubrication property, water solubility, no corrosion, no residue, water-borne environment friendliness and the like on a mold release agent for a production line for rubber pipe molding.

Description

technical field [0001] The invention belongs to the technical field of rubber hose forming and processing for automobiles, and in particular relates to a silicone-free rubber release agent. Background technique [0002] Rubber hoses for automobiles are generally processed into various fixed shapes, and the production line is made by covering unshaped rubber hoses with metal cores of various shapes and forming them at high temperature. During production, the metal core needs to be coated with a release agent before covering the rubber tube that needs to be shaped, otherwise the shaped rubber tube cannot be removed after setting. The release agent is a functional substance between the mold and the product. In the rubber and plastic manufacturing industry, when manufacturing model products, it is used to release the mold, improve production efficiency, and prolong the service life of the mold. At the same time, the product is smooth and the size is qualified. , To reduce waste...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C33/62
Inventor 张克贤
Owner TIANJIN MODERN VOCATIONAL TECH COLLEGE
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