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PTFE-g-MAH modified polymer and preparation method thereof

A PTFE-G-MAH and polymer technology, applied in the field of PTFE-g-MAH modified polymer and its preparation, can solve the problems of little research on polymer grafting, affecting the use of polymers, etc., to improve mechanical properties and the feasibility of industrialization, improve the graft conversion rate, and reduce the effect of side reactions

Inactive Publication Date: 2017-05-24
彭州市运达知识产权服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, straight-chain linear polymers such as polypropylene and polyethylene are modified, and there are many studies through MAH and glycidyl methacrylate. The Chinese invention patent of "method" discloses a method for grafting polypropylene with multiple monomers, but there is little research on grafting other types of polymers, which affects the use of these polymers

Method used

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  • PTFE-g-MAH modified polymer and preparation method thereof

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specific Embodiment 1

[0018] The PTFE-G-MAH modified polymer disclosed in this embodiment is prepared according to the following method:

[0019] Step A: Dissolving MAH monomer, triphenoxyvinylsilane, and initiator benzoyl peroxide in an organic solvent to prepare a solution. The solvent is acetone or toluene, and the MAH monomer is PTFE resin 1%wt of the amount of PTFE resin, silane is 1%wt of the amount of PTFE resin, and the initiator is 0.1%wt of the amount of PTFE resin.

[0020] Step B: PTFE resin powder and the monomer after step A are mixed;

[0021] Step C: The mixture after step B is grafted and modified through a twin-screw extruder reaction device to obtain the PTFE-g-MAH modified polymer, and the extrusion temperature is 140 ° C; the twin-screw extruder The rotating speed is 50r / min.

specific Embodiment 2

[0023] The PTFE-G-MAH modified polymer disclosed in this embodiment is prepared according to the following method:

[0024] Step A: Dissolving MAH monomer, 3-chloropropyl dimethyl vinyl silane and initiator benzoyl peroxide in an organic solvent to prepare a solution, the solvent is acetone or toluene, wherein MAH mono The body is 20%wt of the PTFE resin amount, the silane is 20%wt of the PTFE resin amount, and the initiator is 1%wt of the PTFE resin amount.

[0025] Step B: PTFE resin powder and the monomer after step A are mixed;

[0026] Step C: The mixture after step B is grafted and modified through a twin-screw extruder reaction device to obtain the PTFE-g-MAH modified polymer, and the extrusion temperature is 190 ° C; the twin-screw extruder The rotating speed is 50r / min.

specific Embodiment 3

[0028] The PTFE-G-MAH modified polymer disclosed in this embodiment is prepared according to the following method:

[0029] Step A: Dissolving MAH monomer, triphenoxyvinylsilane, and initiator benzoyl peroxide in an organic solvent to prepare a solution. The solvent is acetone or toluene, and the MAH monomer is PTFE resin 20%wt of the amount of PTFE resin, the silane is 1%wt of the amount of PTFE resin, and the initiator is 0.03%wt of the amount of PTFE resin.

[0030] Step B: PTFE resin powder and the monomer after step A are mixed;

[0031] Step C: The mixture after step B is grafted and modified through a twin-screw extruder reaction device to obtain the PTFE-g-MAH modified polymer, and the extrusion temperature is 190 ° C; the twin-screw extruder The rotating speed is 20r / min.

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Abstract

The invention discloses a PTFE-g-MAH modified polymer and a preparation method thereof, belongs to the field of polymer modification and aims at modifying PTFE resin. The polymer contains a macromolecular main chain and branched chains, wherein the main chain is a PTFE macromolecular chain, the branched chains contain repeated units containing grafting monomers and repeated units containing second grafting monomers, the first containing grafting monomers are MAH monomers, the second grafting monomers are unsaturated silane containing carbon-carbon double bonds, and a peroxide initiator is added during grafting modification of the main chain monomer and branched chain monomers.

Description

technical field [0001] The invention relates to the field of polymer modification, in particular to a PTFE-g-MAH modified polymer and a preparation method thereof. Background technique [0002] Graft modification is a common method in the polymer modification process. In order to improve the performance of the matrix resin and expand the application range, it can be grafted and copolymerized with other polar monomers to prepare functionalized HDPE with polar groups. These comonomers are: MAH, methyl methacrylate, methacrylic acid, acrylic acid, glycidyl methacrylate, etc. [0003] At present, straight-chain linear polymers such as polypropylene and polyethylene are modified, and there are many studies through MAH and glycidyl methacrylate. The Chinese invention patent of "method" discloses a method for grafting polypropylene with multiple monomers, but there is little research on the grafting of other types of polymers, which affects the use of these polymers. Contents of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F259/08C08F222/06C08F230/08
CPCC08F259/08
Inventor 梁海霞
Owner 彭州市运达知识产权服务有限公司