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A kind of resin matrix composite material water-based release agent and preparation method thereof

A technology of composite materials and mold release agents, applied in lubricating compositions, petroleum industry, etc., can solve problems such as difficulty in obtaining a smooth coating on the surface of molds, high price of organic fluoropolymers, high construction performance, etc., to achieve good anti-corrosion , effective storage and transportation, and the effect of reducing the requirements for mold accuracy

Active Publication Date: 2022-07-01
YANTAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, organic fluoropolymers are expensive, and it is difficult to obtain a smooth coating on the surface of the mold
High price and construction performance are the bottlenecks that limit its wide application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] 1) Epoxy-terminated dimethyl polysiloxane resin (molecular weight 500000-1000000 g / mol) and diethanolamine are charged in a molar ratio of 1:4, then excess chloroform is added, and the reaction is carried out at room temperature for 12 hours. It is then precipitated in deionized water and dried to obtain a hydroxydimethylpolysiloxane resin.

[0037] 2) The hydroxydimethylpolysiloxane resin and 4-mercaptobutyric acid are charged according to the molar ratio of 1:9, and 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride and 4-dimethylaminopyridine was used as a catalyst (the molar ratio of the two was 10:1), and excess chloroform was used as a solvent, and the reaction was carried out at room temperature for 24 hours. Then washed with water, washed with 5% sodium bicarbonate aqueous solution, dried, removed chloroform with a rotary evaporator, and dried in a vacuum drying oven at 30° C. for 24 hours to obtain mercapto-terminated dimethylpolysiloxane.

[0038] 3)...

Embodiment 2

[0047] 1) Epoxy-terminated dimethyl polysiloxane resin (molecular weight 20000-50000 g / mol) and diethanolamine are charged in a molar ratio of 1:2, then excess chloroform is added, and the reaction is carried out at room temperature for 24 hours. It is then precipitated in deionized water and dried to obtain a hydroxydimethylpolysiloxane resin.

[0048] 2) Hydroxydimethylsiloxane resin and 3-mercaptopropionic acid are charged according to the molar ratio of 1:2, and 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride and 4 - Dimethylaminopyridine is used as catalyst (the molar ratio of the two is 10:1), and excess chloroform is used as solvent, and the reaction is carried out at room temperature for 24 hours. Then, washed with water, washed with a 5% aqueous sodium bicarbonate solution, dried, removed chloroform with a rotary evaporator, and dried in a vacuum drying oven at 30° C. for 24 hours to obtain a mercapto-terminated dimethylpolysiloxane resin.

[0049] 3) Hea...

Embodiment 3

[0057] 1) Epoxy-terminated diphenyldimethylsiloxane resin (molecular weight 2000-4000 g / mol) and diethanolamine are charged in a molar ratio of 1:3, then excess chloroform is added, and the reaction is carried out at room temperature for 2 hours . It is then precipitated in deionized water and dried to obtain a hydroxydiphenyldimethylsiloxane resin.

[0058] 2) Hydroxydiphenyldimethylsiloxane resin and 6-mercaptohexanoic acid were charged according to the molar ratio of 1:4, and 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloric acid was used. Salt and 4-dimethylaminopyridine were used as catalysts (the molar ratio of the two was 10:1), and excess chloroform was used as solvent, and the reaction was carried out at room temperature for 12 hours. Then, washed with water, washed with 5% aqueous sodium bicarbonate solution, dried, removed chloroform with a rotary evaporator, and dried in a vacuum drying oven at 30° C. for 24 hours to obtain a mercapto-terminated diphenyld...

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PUM

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Abstract

The invention discloses a resin-based composite material release agent and a preparation method thereof. The release agent is composed of the following components in parts by weight: 20-30 parts of mercaptopolysiloxane, 0.5-5 parts of organic solvent, emulsification 0.1-0.3 parts of a pH regulator, 0.5-2 parts of a pH regulator, 0.1-0.5 parts of an aqueous solution of graphene oxide (about 10% by weight of graphene oxide), and 70-80 parts of deionized water. The resin-based composite material release agent of the present invention has good film-forming property and wear resistance, can not only protect the mold, prolong the service life of the mold, but also significantly increase the number of demoulding. In addition, the mold release agent has the advantages of low cost, simple preparation process, good dilution, anti-corrosion and freeze-thaw stability.

Description

technical field [0001] The invention belongs to the technical field of composite material preparation, and particularly relates to a resin-based composite material release agent and a preparation method thereof. Background technique [0002] In the preparation process of resin-based composite materials, metal molds are often required to assist the molding of composite products. Limited by the reactive groups of the resin used and the type of supporting curing cross-linking agent, the molding temperature of the composite material is generally 120-200 ℃. During the molding process, the resin has the opportunity to directly contact the metal mold, and the composite product is firmly adhered to the surface of the mold, and it is difficult to demold to obtain a qualified product. Therefore, according to the process requirements, it is necessary to periodically wipe the mold release agent on the surface of the metal mold to form a complete coating, completely isolate the product ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M173/02C08G77/392C10N40/36
CPCC10M173/02C08G77/392C10M2229/053C10M2201/041C10M2207/022C10M2203/022C10M2209/104C10M2207/126C10M2207/046C10M2219/042C10M2209/109
Inventor 郑耀臣徐汇乔程辉刘潞王宋琦张文杰
Owner YANTAI UNIV
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