Asbestos-free cork-rubber gasket for ships

A non-asbestos, rubber pad technology, applied in the field of polymer materials, can solve the problem of low compressive performance

Inactive Publication Date: 2012-10-17
JIANGSU HUAYANG HEAVY IND +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some people have studied to improve the compression resistance of asbestos-free cork rubber pads used in ships, but because no breakthrough has been made in the proportion of nitrile rubber, cork powder and various accelerators, the current domestic production of asbestos-free cork The compression resistance of rubber mats is generally low, and it still needs to be imported from abroad

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0009] Example 1. A marine non-asbestos cork rubber pad is composed of the following components in mass percentage except the allowable amount of trace impurities: nitrile rubber 26: 22.3~31,4 # Cork powder (40 mesh to 60 mesh): 12.4 to 14.9, 5 # Cork powder (60 mesh to 100 mesh): 18.6 to 22.3, light calcium carbonate: 18.6 to 31, zinc oxide: 1.7 to 2.5, accelerator sulfur: 0.25 to 0.37, accelerator TDTM: 0.37 to 0.5, accelerator DM: 0.37~0.5, anti-aging agent RM: 0.37~0.5, stone powder: 6.2~9.92, solid Malone: ​​1~1.49, resin 2123: 1.24~1.49.

example 2

[0010] Example 2. In addition to the allowable amount of trace impurities in a marine non-asbestos cork rubber pad, the preferred mass percentage composition is: nitrile rubber 26:23.1~30,4 # Cork powder (40 mesh to 60 mesh): 12.9 to 14.4, 5 # Cork powder (60 mesh to 100 mesh): 19.1 to 21.8, light calcium carbonate: 19 to 30.3, zinc oxide: 1.8 to 2.35, accelerator sulfur: 0.27 to 0.35, accelerator TDTM: 0.39 to 0.49, accelerator DM: 0.39~0.49, anti-aging agent RM: 0.39~0.49, stone powder: 6.6~9.86, solid Malone: ​​1.05~1.45, resin 2123: 1.25~1.45.

example 3

[0011] Example 3. In addition to the allowable amount of trace impurities in a marine non-asbestos cork rubber pad, the composition of the optimal mass percentage is: nitrile rubber 26:24~29,4 # Cork powder (40 mesh to 60 mesh): 13.4 to 13.9, 5 # Cork powder (60 mesh to 100 mesh): 19.6 to 21.3, light calcium carbonate: 19.4 to 29.6, zinc oxide: 1.9 to 2.2, accelerator sulfur: 0.28 to 0.34, accelerator TDTM: 0.4 to 0.47, accelerator DM: 0.4~0.48, anti-aging agent RM: 0.4~0.48, stone powder: 7~9.8, solid Malone: ​​1.1~1.4, resin 2123: 1.26~14.

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PUM

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Abstract

The invention relates to a polymer, especially relates to improvement of a formula of a cork-rubber gasket for ships, and discloses an asbestos-free cork-rubber gasket for ships. The asbestos-free cork-rubber gasket for ships comprises an acceptable trace amount of impurities, and also comprises: by mass, 22.3 to 31% of a nitrile rubber 26, 12.4 to 14.9% of 4# cork powder (having granularity of 40 to 60 meshes), 18.6 to 22.3% of 5# cork powder (having granularity of 60 to 100 meshes), 18.6 to 31% of light calcium carbonate, 1.7 to 2.5% of zinc oxide, 0.25 to 0.37% of an accelerator sulfur, 0.37 to 0.5% of an accelerator TDTM, 0.37 to 0.5% of an accelerator DM, 0.37 to 0.5% of an anti-aging agent RM, 6.2 to 9.92% of stone powder, 1 to 1.49% of coumarone, and 1.24 to 1.49% of a resin 2123. The asbestos-free cork-rubber gasket for ships satisfies requirements on ship equipment installation, does not produce environmental pollution, and satisfies requirements from the international maritime organization on ship transportation.

Description

technical field [0001] The invention relates to polymer materials, in particular to the improvement of the formulation of cork rubber pads for ships. Background technique [0002] Cork rubber pads are widely used in pipe flange connections on ships. In order to improve the compression resistance of cork rubber pads, an appropriate amount of asbestos is often added to cork rubber pads. In recent years, the International Maritime Organization has stipulated that the use of asbestos-containing products on ships is prohibited. In the face of my country's growing ocean transportation force, whether it is new ships or ship repairs, it is urgent to solve the problem of low compressive performance of asbestos-free cork rubber mats. . Some people have studied to improve the compression resistance of asbestos-free cork rubber pads used in ships, but because no breakthrough has been made in the proportion of nitrile rubber, cork powder and various accelerators, the current domestic pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/02C08L97/02C08K13/02C08K3/26C08K3/22C08K3/06
Inventor 丁郁华丁晓阳
Owner JIANGSU HUAYANG HEAVY IND
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