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Short-fluorocarbon-chain acrylate polymer, preparation method thereof and application of short-fluorocarbon-chain acrylate polymer in release agent

A short fluorocarbon chain acrylate and acrylate technology, which is applied in the field of short fluorocarbon chain acrylate polymers and their preparation and application in release agents, can solve the problem of difficult migration of fluorine chains and stable arrangement, and poor surface properties. Good and other questions

Pending Publication Date: 2021-07-30
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, compared with long fluorocarbon chain acrylate polymers, due to the short fluorocarbon chain, the fluorine chain is difficult to migrate and stably arrange on the surface, so its surface performance is not good

Method used

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  • Short-fluorocarbon-chain acrylate polymer, preparation method thereof and application of short-fluorocarbon-chain acrylate polymer in release agent
  • Short-fluorocarbon-chain acrylate polymer, preparation method thereof and application of short-fluorocarbon-chain acrylate polymer in release agent
  • Short-fluorocarbon-chain acrylate polymer, preparation method thereof and application of short-fluorocarbon-chain acrylate polymer in release agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] N 2 Under the atmosphere, add 30g of octadecyl methacrylate and 5g of acrylic acid to 80g of butyl acetate, start stirring and raise the temperature to 65°C. After all the monomers are dissolved, add 0.2g of azobisisobutyronitrile dropwise to dissolve in 5mL The polymerization initiator solution of butyl acetate, react for 1h after the dropwise addition, and then add 10g CH at 65°C 2 =C(CH 3 )COO(CH 2 ) 2 (CF 2 ) 5 CF 3 React with 5g of vinyltriethoxysilane for 6.0 hours, then raise the temperature to 75°C for 2 hours. Cool to room temperature to obtain a uniform fluorine-containing acrylate copolymer solution.

[0067] Preparation of the release agent composition: take 5.0 g of the above-prepared fluorine-containing acrylate copolymer solution, add 20 g of methyl silicone oil, 70 g of acetone, and 5.0 g of hexafluoroisopropyl methyl ether, mix well and set aside.

[0068] Then use the following test method to test the mold release performance, please refer to T...

Embodiment 2

[0079] N 2 Under the atmosphere, add 20g of octadecyl methacrylate and 5g of acrylic acid to 80g of butyl acetate, start stirring and raise the temperature to 65°C. After all the monomers are dissolved, add 0.2g of azobisisobutyronitrile dropwise to dissolve in 5mL The polymerization initiator solution of butyl acetate, react for 1h after the dropwise addition, and then add 20g CH at 65°C 2 =C(CH 3 )COO(CH 2 ) 2 (CF 2 ) 5 CF 3 React with 5g of vinyltriethoxysilane for 6.0 hours, then raise the temperature to 75°C for 2 hours. Cool to room temperature to obtain a uniform fluorine-containing acrylate copolymer solution.

[0080] The preparation of the release agent composition and the test method of the release performance are the same as in Example 1, and the test results are shown in Table 1.

Embodiment 3

[0082] N 2 Under the atmosphere, add 10g of octadecyl methacrylate and 5g of acrylic acid to 80g of butyl acetate, start stirring and raise the temperature to 65°C. After all the monomers are dissolved, add 0.2g of azobisisobutyronitrile dropwise to dissolve in 5mL Polymerization initiator solution of butyl acetate, react for 1h after dropwise addition, then add 30g CH at 65°C 2 =C(CH 3 )COO(CH 2 ) 2 (CF 2 ) 5 CF 3 React with 5g of vinyltriethoxysilane for 6.0 hours, then raise the temperature to 75°C for 2 hours. Cool to room temperature to obtain a uniform fluorine-containing acrylate copolymer solution.

[0083] The preparation of the release agent composition and the test method of the release performance are the same as in Example 1, and the test results are shown in Table 1.

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Abstract

The invention provides a short-fluorocarbon-chain acrylate polymer. The short-fluorocarbon-chain acrylate polymer is prepared from a short-fluorocarbon-chain acrylate monomer, an acrylate monomer, a vinyl-containing organosilicon monomer and an acrylic monomer through solution polymerization. The invention also provides a fluorine-containing resin release agent composition taking the short fluorocarbon chain acrylate polymer as a main body, the fluorine-containing resin release agent composition has good degradability, and the use of PFOA / PFOS substances is avoided. The release agent composition is uniform in film forming on the surface of a mold, short in demolding time, long in demolding life, not prone to high-temperature glue flowing, easy to remove from the surface of a finished product to be demolded, excellent in demolding performance and capable of being applied to the technical field of demolding of thermosetting resin, thermoplastic resin, various rubber workpieces and the like.

Description

technical field [0001] The invention relates to the field of demoulding technology for thermosetting resins, thermoplastic resins and various rubber parts, in particular to a short fluorocarbon chain acrylate polymer, a preparation method thereof, and an application in a high-performance demoulding agent composition. Background technique [0002] The release agent is a functional substance between the mold and the molded product, and is often used in metal die-casting, polyurethane foam and elastomer, glass fiber reinforced plastics, injection molding thermoplastics, vacuum foamed sheets and extruded profiles, etc. In various molding operations, it is a type of processing aid that prevents molded products, laminated products, etc. from adhering to molds or other board surfaces, and acts as a type of processing aid that is easy to detach. [0003] In the field of polymer molding and processing, the use of release agents is essential. Traditionally used as release agents are m...

Claims

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Application Information

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IPC IPC(8): C08F220/18C08F220/06C08F220/24C08F230/08B29C33/62
CPCC08F220/1818C08F220/1812C08F220/24B29C33/62
Inventor 陈爱民宋蔚昌李信倪梯铜
Owner ZHEJIANG UNIV OF TECH
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