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Liquid nitrosofluororubber composition for sealing

A technology of nitrosofluororubber and composition, which is applied in the field of organic fluorine materials, can solve problems such as the lack of in-depth research on the application of liquid nitrosofluororubber, and achieve good vulcanization mechanical properties, good flow properties, and good sealing properties. Effect

Active Publication Date: 2016-03-23
CHINA BLUESTAR CHENGRAND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this patent is limited to the preparation of nitrosofluororubber raw rubber, and there is no in-depth study on the application of liquid nitrosofluororubber

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A liquid nitrosofluororubber composition for sealing, characterized in that: by weight, it comprises the following components: 100 parts of nitrosofluororubber raw rubber, 0.5 part of vulcanizing agent, and 8 parts of reinforcing filler; The intrinsic viscosity of nitrosofluororubber raw rubber is 0.05dLg -1 , its physical form is a liquid form, with flowability at room temperature.

Embodiment 2

[0025] A liquid nitrosofluororubber composition for sealing, characterized in that: by weight, it comprises the following components: 100 parts of nitrosofluororubber raw rubber, 2 parts of organic polyamines, 5 parts of vulcanization aids, reinforcing 15 parts of filler; the intrinsic viscosity of the nitrosofluororubber raw rubber is 0.1dLg -1 , its physical form is a liquid form, with flowability at room temperature.

[0026] The said organic polyamine is in liquid state.

Embodiment 3

[0028] A liquid nitrosofluororubber composition for sealing, characterized in that: by weight, it comprises the following components: 100 parts of nitrosofluororubber raw rubber, 1 part of polyetheramine with a molecular weight of 400, and 2 parts of accelerator, 10 parts of reinforcing fillers; the intrinsic viscosity of the nitrosofluororubber raw rubber is 0.08dLg -1 , its physical form is a liquid form, with flowability at room temperature.

[0029] The low molecular weight polyetheramine is liquid.

[0030] The accelerator is liquid.

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PUM

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Abstract

The invention provides a liquid nitroso fluorine rubber composition for sealing. The Liquid nitroso fluorine rubber composition for sealing comprises the following components in parts by weight: 100 parts of nitroso fluorine raw rubber, 0.5-2 parts of vulcanizing agent, 0-5 parts of vulcanizing aid and 8-15 parts of reinforced filler. The intrinsic viscosity of the nitroso fluorine raw rubber is 0.05-0.1dLg<-1>, the physical form of the raw rubber is a liquid form, and the raw rubber has room-temperature fluidity. According to the composition disclosed by the invention, the nitroso fluorine rubber polymer which is low in molecular weight and has a room-temperature flowing form is adopted and applied to irregular shape sealing preparation, the sealing property is provided for substrates contacting a strong acid, a strong base, a strong oxidant and other chemical reagent mediums, and the liquid nitroso fluorine rubber composition can be applied to a plurality of fields such as aerospace, chemical engineering, electrons and new energy sources.

Description

technical field [0001] The invention belongs to the technical field of organic fluorine materials, and in particular relates to a liquid nitrosofluororubber composition for sealing. Background technique [0002] Nitroso fluororubber (NitrosoRubber, referred to as NR) is a polymer obtained by low-temperature copolymerization of nitrosotrifluoromethane, tetrafluoroethylene, and vulcanization point (or crosslinking point) monomers. Half of the main chain of NR polymer is a carbon-carbon bond (-C-C-), the other half is a nitrogen-oxygen bond (-N-O-), and the carbon atoms are all connected to fluorine atoms, which has good chemical stability; a large number of main chains The nitrogen-oxygen chain link endows rubber with excellent low-temperature resistance; NR has high fluorine content and does not contain C-H bonds. The gas released during high-temperature cracking can extinguish the flame, so NR will not burn even in pure oxygen; heat resistance Well, the long-term use temper...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L79/00C08K3/36C08G73/24
CPCC08G73/26C08K3/36C08K5/3412C08L79/00C08L79/02C08L71/00
Inventor 邓清田周楠杨晓勇徐亭吴勇唐培沈佶原华宋升
Owner CHINA BLUESTAR CHENGRAND CO LTD