Crosslinking sensitizer for fluorine-containing polymer

A cross-linking sensitizer and polymer technology, which is applied in the field of cross-linking sensitizers, can solve the problems of poor product stability, low smoke generation, and high volatility, and achieve low volatility, small smoke generation, and non-toxic Self-aggregation effect

Active Publication Date: 2015-11-11
中广核三角洲(江苏)塑化有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a crosslinking sensitizer for fluorine-containing polymers, which solves the problem of current crosslinking sensitizers for fluorine-containing polymers in fluorine-containing The polymer is easy to self-polymerize and volatile at the processing temperature, producing a large amount of toxic smoke and poor product stability. The fluoropolymer is not easy to sel

Method used

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  • Crosslinking sensitizer for fluorine-containing polymer
  • Crosslinking sensitizer for fluorine-containing polymer

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Embodiment 1~5

[0018] Examples 1 to 5: A cross-linking sensitizer for fluoropolymers, the cross-linking sensitizer is formed by mixing component A and component B, said component A: component B The mass ratio is 1:0.1~10, and component A conforms to the following general structural formula (1):

[0019] (1)

[0020] Where X is vinyl, allyl, methallyl or propargyl, n=2-15, and the weight average molecular weight of X is 600-5000;

[0021] The component B is at least one of triallyl isocyanate, trimethylallyl isocyanate, triallyl cyanate, and trimethylallyl cyanate.

[0022] The weight average molecular weight of the above component A is 1000-3000.

[0023] Specifically as described in Table 1:

[0024] Table 1

[0025]

[0026] A crosslinked fluoropolymer using the above crosslinked sensitizer is obtained through the following steps:

[0027] The first step of ingredients: mix the following substances by mass in a high-speed mixer for 10 minutes;

[0028] 100 parts of ethylene-tetrafluoroethylene copolym...

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Abstract

The invention discloses a crosslinking sensitizer for a fluorine-containing polymer. The crosslinking sensitizer is characterized by being formed by mixing a component A and a component B according to the mass ratio of 1 to 0.1-10; the component A conforms to the structural formula (1) (please see the formula in the specifications), wherein X represents vinyl or allyl or methylallyl or propargyl, n ranges from 2 to 15, and the weight-average molecular weight of X ranges from 600 to 5000; the component B is at least one of triallyl isocyanate, trimethyl allyl isocyanate, triallyl cyanate and trimethyl allyl cyanate. At a machining temperature, the fluorine-containing polymer is not prone to self-polymerization, low in volatility and not prone to volatilization or self-polymerization, and product stability can be improved; it is found in the machining process that a sample of the crosslinking sensitizer is small in smoke amount, white and luster in color, free of after-radiation color changes and quite high in product stability in the use process.

Description

Technical field [0001] The present invention relates to the technical field of cross-linking sensitizers, in particular to cross-linking sensitizers for fluoropolymers. Background technique [0002] The crosslinking and degradation of fluorine-containing polymers occur simultaneously under radiation, and a crosslinking sensitizer must be added to obtain a high degree of crosslinking at room temperature. At present, the crosslinking sensitizers used in fluoropolymers are mainly triallyl isocyanate (TAIC), triallyl cyanate (TAC) and so on. However, because the processing temperature of fluoropolymers is basically above 200°C, and TAIC and TAC have low melting points, they are very volatile at the processing temperature of fluoropolymers, or have self-polymerized, so that a large amount of Toxic fumes, and will affect product stability. [0003] Therefore, it is very worthwhile for those skilled in the art to provide a radiation crosslinking sensitizer that is not easy to self-polym...

Claims

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Application Information

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IPC IPC(8): C08K5/3492C08K5/29C08L23/08C08K5/00C08K5/20
Inventor 史丛丛
Owner 中广核三角洲(江苏)塑化有限公司
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