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Preparation method of demolding agent

A technology of release agent and preparation steps, which is applied in the field of release agent preparation, can solve problems such as poor release performance, incomplete separation, and release agent adhesion, so as to increase the number of molecular chains and enhance the release effect , the effect of surface energy reduction

Inactive Publication Date: 2018-10-23
FOSHAN GAOMING DISTRICT ZHUAHE NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention: Aiming at the defects that the current release agent is easy to adhere to the surface of the finished product to be demoulded, and the incomplete separation causes poor release performance, a preparation method of the release agent is provided

Method used

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  • Preparation method of demolding agent

Examples

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Effect test

example 1

[0024] In parts by weight, weigh 4 parts of hydroxybenzoic acid, 20 parts of fluorine-containing olefin oligomers and 50 parts of N,N-dimethylformamide into a three-necked flask, and keep the temperature constant at the temperature of a water bath at 30°C React for 7 hours to obtain a reaction liquid, impregnate the reaction liquid with a mass fraction of 30% hydrochloric acid, shake and mix for 30 minutes, then filter to obtain a filter cake, wash the filter cake with distilled water for 5 times and dry in an oven to obtain a reaction powder for subsequent use; In terms of parts, weigh 5 parts of rapeseed oil, 8 parts of acetic acid and 1.0 part of succinoyl chloride and put them into a beaker to mix and stir to obtain a mixed solution. Put the beaker into a water bath with a water bath temperature of 60°C, and pour Add dropwise 20% of the mixed liquid mass fraction of 20% hydrogen peroxide, control the dropping speed, and finish dropping in 120 minutes to prepare a reaction e...

example 2

[0026]In parts by weight, weigh 5 parts of hydroxybenzoic acid, 21 parts of fluorine-containing olefin oligomer and 51 parts of N,N-dimethylformamide into a three-necked flask, and keep the temperature constant at the temperature of a water bath at 32°C React for 7.5 hours to obtain a reaction liquid, impregnate the reaction liquid with a mass fraction of 32% hydrochloric acid, oscillate and mix for 35 minutes, then filter to obtain a filter cake, wash the filter cake with distilled water 5 times and dry it in an oven to obtain a reaction powder for subsequent use; In terms of parts by weight, weigh 7 parts of rapeseed oil, 9 parts of acetic acid and 1.1 parts of succinoyl chloride and put them into a beaker to mix and stir to obtain a mixed solution. 25% of the mass fraction of the mixed solution was added dropwise to 21% hydrogen peroxide, and the rate of addition was controlled. After 125 minutes, the reaction emulsion was obtained; % of acetic acid, control the rate of add...

example 3

[0028] In terms of parts by weight, weigh 6 parts of hydroxybenzoic acid, 22 parts of fluorine-containing olefin oligomers and 53 parts of N,N-dimethylformamide into a three-necked flask, and keep the temperature constant at the temperature of a water bath at 35°C React for 8 hours to obtain a reaction liquid, impregnate the reaction liquid with a mass fraction of 35% hydrochloric acid, shake and mix for 40 minutes, then filter to obtain a filter cake, wash the filter cake with distilled water for 6 times and dry it in an oven to obtain a reaction powder for subsequent use; In terms of parts, weigh 8 parts of rapeseed oil, 10 parts of acetic acid and 1.3 parts of succinyl chloride and put them into a beaker to mix and stir to obtain a mixed solution. Put the beaker into a water bath with a water bath temperature of 65°C, and pour Add dropwise 30% of the mixed liquid mass fraction of 23% hydrogen peroxide, control the rate of addition, and finish dropping in 130 minutes to prepa...

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Abstract

The invention relates to a preparation method of a demolding agent, and belongs to the technical field of preparation of demolding agents. The preparation method is characterized in that fluorine olefin-containing oligomer is used as a starting material, a surfactant using a fluorine-containing compound as a main chain is generated, and the fluorine-containing compound has high surface activity, high thermal stability, and high chemical corrosion-resistant property; the fluorine olefin-containing oligomer is of a multiple-branch internal olefin structure, the stability of the structure is better, the activity of reaction with fluorine atoms directly connected with double-bond carbon atoms is high, a nucleophilic reagent can be easily substituted in a polarity reagent, and the demolding effect is enhanced. The preparation method has the advantages that by using rapeseed oil as the raw material, the plant oleyl alcohol is synthesized by acetic acid, hydrogen peroxide and other reagents,a large amount of hydroxyl groups, epoxy groups and the like is contained in the molecules, and is combined with the fluorine-containing compound to generate fluorine carbon bonds and fluorine oxygengroups, the number of molecule chains in the demolding agent is increased, and the mechanical property of the demolding agent is enhanced; the surface energy of the demolding agent is decreased, and the application prospect is broad.

Description

technical field [0001] The invention relates to a method for preparing a release agent, and belongs to the technical field of release agent preparation. Background technique [0002] The release agent is a functional substance between the mold and the finished product. The mold release agent is an important component in the molding process of composite materials. It not only affects the surface properties of composite materials, but also affects whether the product can be released from the mold. No matter how important the product and mold are, if the product sticks to the mold, If it cannot be released from the mold, the product and the mold can only be scrapped, so the role of the release agent is extremely important. The function of the release agent is to separate the cured composite product from the mold smoothly, so as to obtain a smooth and flat product, and to ensure that the mold can be used repeatedly. [0003] Due to the rapid development of injection molding, e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M159/12C10M131/12C10M129/04C10M163/00C10M169/04B22C3/00C10N40/36C10N30/06
CPCB22C3/00C10M129/04C10M131/12C10M159/12C10M163/00C10M169/045C10M2207/401C10M2211/044C10N2030/06C10N2040/36
Inventor 胡次兵蒋梦成朱彩娣
Owner FOSHAN GAOMING DISTRICT ZHUAHE NEW MATERIAL TECH CO LTD