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High temperature resistant butyronitrile synthetic rubber and process for preparing same

A technology of synthetic rubber and high temperature resistance, which is applied in the field of rubber or its derivative composition, which can solve the problems of complex production process, high cost, high production and use cost, reduce production cost and use cost, wide application range, Excellent performance indicators

Inactive Publication Date: 2006-10-11
张成余
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when the gasket on the plate heat exchanger is used in the case of superheated steam at 200 ° C, it is usually installed with a cooling regulator, or a gasket made of silicone rubber and fluororubber at a higher cost is used to meet the requirements of the application. Requirements, and the production process of silicone rubber and fluororubber with good high temperature resistance is complicated, resulting in high production and use costs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] When the temperature of the front roller of the rubber mixer reaches 50°C and the temperature of the rear roller reaches 60°C, add 17 parts by weight of nitrile NA36-40 into the open flat plate rubber mixer for 28 times of mastication, and roll it in the first 4 minutes. The gap is 5mm, and the roller distance is 2mm in the last 5 minutes. After relaxing, roll the lower sheet and make three triangle bags to facilitate the follow-up process; add 0.9 parts by weight of active zinc oxide, 0.3 parts of anti-aging agent D, 4 parts of spray carbon black 330, 8 parts of calcium carbonate, 2 parts of phenolic resin 2123, 70 parts of five-grade asbestos fiber, 0.3 parts of accelerator M, 0.5 parts of analytically pure benzene, 0.5 parts of sulfur and 1 part of carbon fiber. Continue to knead for another 20 minutes after feeding the material, and then roll off the sheet to get the finished product.

Embodiment 2

[0032] When the temperature of the front roller of the rubber mixer reaches 60°C and the temperature of the rear roller reaches 70°C, add 25 parts by weight of nitrile NA36-40 into the open flat plate rubber mixer for mastication 35 times, and roll it in the first 5 minutes. The gap is 5mm, and the roller distance is 2mm in the last 6 minutes. After relaxing, roll the lower sheet and make three triangle bags to facilitate the follow-up process; add 2 parts of active zinc oxide, 0.6 parts of anti-aging agent D, 3 parts of spray carbon black 330, 7 1 part of calcium carbonate, 3 parts of phenolic resin 2123, 75 parts of five-grade asbestos fiber, 0.4 part of accelerator M, 0.8 part of analytical pure benzene, 0.3 part of sulfur and 0.8 part of carbon fiber After rolling in the rubber mixing machine for 6 minutes, add plain rubber Continue to knead for 25 minutes after feeding, and roll off the sheet after relaxing.

Embodiment 3

[0034] When the temperature of the front and rear rollers of the rubber mixing machine reaches 55°C and 65°C respectively, add 20 parts by weight of nitrile NA36-40 for mastication, repeat it several times, and reach 9 minutes, of which the roller distance is 5mm in the first 4 minutes , the last 5 minutes, the roller distance is 2mm, and the triangle bag is made to make the plain rubber into strips to facilitate the subsequent process; take 1 part by weight of zinc oxide, 0.4 parts of anti-aging agent D, 10 parts of calcium carbonate, 1.5 parts of phenolic resin 2123, 5 330 parts of spray carbon black, 65 parts of five-grade asbestos fiber, 0.1 part of accelerator M, 0.6 parts of benzene, 0.8 parts of sulfur and 2 parts of carbon fiber were put into the rubber mixer and rolled for 5 minutes, then added mastic rubber and continued to mix for 20 minutes , put the back and roll the next film.

[0035] serial number

[0036] It can be seen from the test data that each p...

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Abstract

The invention relates to a refractory nitrile synthetic rubber and its process for preparing, in which the said rubber is the preferred sealing element of the equipments such as oil-extraction, petroleum cracking and coal stilling basin used in a hot environment. The said rubber is prepared by the following raw materials (weight parts): butyronitrile NA36-40, asbestos fiber, active zinc bloom, antiager D, atomizing coom 330, calcium carbonate, phenol resin 2123, accelerant M, benzene, sulfur and carbon fiber.

Description

technical field [0001] The invention relates to a composition of rubber or its derivatives, in particular to a high-temperature-resistant nitrile butadiene synthetic rubber and a manufacturing method thereof. It is the preferred seal for equipment used in high temperature environments such as oil refining, petroleum cracking, and coal distillation equipment. Background technique [0002] Rubber products such as rubber gaskets, rings, rubber tubes and their conveyor belts are widely used in various fields of industry and have played an active role in industrial development. However, with the rapid development of science and technology and industry, the requirements for its use are getting higher and higher, and the use conditions are more stringent. For example, in some special industries, not only acid and alkali resistance, but also high temperature and high pressure resistance are required to meet the use Require. At present, the high temperature resistance index of dome...

Claims

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Application Information

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IPC IPC(8): C08L9/02C08K7/06C08L61/06C08K3/04C08K3/22C08K3/06
Inventor 张成余
Owner 张成余
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