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Hard rubber composition for hot water vulcanized anticorrosion lining of large equipment

A technology of hot water vulcanization and anti-corrosion lining, applied in the field of rubber composition, can solve the problems of forming a large number of blisters, poor bonding strength of the lining, unable to achieve complete vulcanization, etc., to achieve the effect of improving hardness and ensuring bonding strength

Inactive Publication Date: 2011-08-24
SHANGHAI SHUANGPU ANTICORROSION RUBBER LINING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the temperature of hot water vulcanization is low, and the unvulcanized lining is soaked in water. The existing hard rubber linings have the following problems with hot water vulcanization: Complete vulcanization cannot be achieved , the bonding strength of the lining is poor, and a large number of blisters will form on the surface

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0034] formula:

[0035] serial number

1

2

3

Natural rubber MR CV 50

75

82

90

high styrene

25

30

30

carbon black

11

20

39

Sulfur (industrial sulfur)

20

35

50

accelerator DM

1

2

3

Accelerator TT

3

2

5

[0036] The high styrene includes: high styrene rubber with a styrene content of 50% to 70%.

[0037] Production of rubber lining (rubber sheet):

[0038] Weigh the raw materials according to the formula ratio, mix the rubber in the open mill or internal mixer (that is, mix evenly), press out the mixed rubber film, and then press out the film on the extruder or calender (thickness is generally 3~5mm) .

[0039] Equipment lining rubber:

[0040] Sandblast the metal surface of the equipment that needs to be lined with rubber, the sandblasting grade is Sa 2.5, after cleaning, apply SP-2 gray primer within 4 hours, after air drying for 1~72 hours, then apply SP-...

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PUM

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Abstract

The invention relates to a rubber composition, in particular to a rubber composition for hot water vulcanized anticorrosion lining of large equipment, which is characterized by comprising the following components in percentage by weight: 70 to 90 parts of natural rubber, 10 to 30 parts of high styrene, 10 to 40 parts of filler, 3 to 10 parts of zinc oxide, 20 to 50 parts of sulfur, 1 to 3 parts of promoter DM1 and 1 to 5 parts of promoter TT. In the invention, the vulcanization of the composition can be realized without using any vulcanizing boiler, the vulcanization is complete, and surface quality problems are avoided.

Description

technical field [0001] The invention relates to a rubber composition, in particular to a large-scale equipment anti-corrosion lining rubber composition. Background technique [0002] The vulcanization method of the existing hard rubber lining is mainly vulcanization tank vulcanization, followed by bulk vulcanization. [0003] The vulcanization of the vulcanization tank requires that the size of the equipment itself should not be too large, and it must be able to enter the vulcanization tank. Bulk vulcanization requires the device itself to be hermetically sealed. Equipment that cannot be vulcanized by these two methods must seek a new vulcanization method. Hot water vulcanization is an effective way to solve this problem. [0004] However, the temperature of hot water vulcanization is low, and the unvulcanized lining is soaked in water. The hot water vulcanization of existing hard rubber linings has the following problems: complete vulcanization cannot be achieved, the bo...

Claims

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Application Information

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IPC IPC(8): C08L7/00C08L9/06C08K13/02C08K3/22C08K3/06
Inventor 彭高桥程广来梅杨敏
Owner SHANGHAI SHUANGPU ANTICORROSION RUBBER LINING
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