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Process for preparation formation of nonasbestos fibre enhanced latex sealing plate

A non-asbestos fiber and sealing gasket technology, which is applied in the field of fiber-reinforced rubber elastomer composite material manufacturing process, can solve pollution and other problems, and achieve the effect of good chemical corrosion resistance

Inactive Publication Date: 2004-12-29
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In 1995, we designed the new compressed asbestos method (NCA) molding process for the first time in China, and replaced asbestos with sulfonamide, aramid fiber, glass or carbon fiber, and developed some medium and high pressure non-asbestos fiber reinforced rubber materials. Due to the use of compressed asbestos method A large amount of organic solvents such as benzene, xylene or gasoline still have great pollution to the environment

Method used

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  • Process for preparation formation of nonasbestos fibre enhanced latex sealing plate
  • Process for preparation formation of nonasbestos fibre enhanced latex sealing plate

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Experimental program
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specific Embodiment

[0029] Specific embodiments of the present invention are now described in the following:

[0030] The molding process flow chart of the non-asbestos reinforced latex gasket plate of the present invention can be found in figure 1 , each step in the technological process of the inventive method is described as follows:

[0031] a. Treatment of non-asbestos fibers:

[0032] ①Shortening of fibers

[0033] The shortening of non-asbestos fibers should be controlled and the initial aspect ratio L / D should be 100-200. Different types of fibers have large differences in strength and toughness. For inorganic non-asbestos fibers with poor toughness, such as glass fiber, slag wool, titanate fiber, etc., the initial length-to-diameter ratio is preferably 200; and for organic fibers with excellent toughness, such as polysulfone fiber, aramid fiber, and Apmoc, etc. For fiber, it is better to choose 100-120, otherwise it will cause difficulty in uniform dispersion with rubber and filler d...

Embodiment 1

[0048] Embodiment one: in the present embodiment, the components of the non-asbestos fiber-reinforced latex gasket sheet and their proportioning ratio (percentage by dry mass) are as follows:

[0049] Formula A

[0050] Aramid pulp 13.00%

[0051] Glass fiber (L / D=200) 12.00%

[0052] Fibrous sepiolite 25.00%

[0053] Natural Rubber Emulsion 20.00%

[0054] Zinc Oxide 0.20%

[0055] Antiager D 0.20%

[0056] Casein 0.13%

[0057] Potassium hydroxide 0.03%

[0058] Lanolin 0.04%

[0059] Accelerator TMTD 0.18%

[0060] Sulfur 0.20%

[0061] Water-dispersible blocked isocyanate emulsion 2.02%

[0062] Nanoclay 5.00%

[0063] Gypsum Whiskers 5.00%

[0064] Calcium Carbonate 7.00%

[0065] Talc 5.00%

[0066] Diatomaceous earth 5.00%

[0067] A total of 50Kg (dry mass) of the above-mentioned components is taken according to the above wet molding process to obtain the non-asbestos fiber reinforced latex gasket plate of the present invent...

Embodiment 2

[0072] Embodiment two: in the present embodiment, each component of non-asbestos fiber reinforced latex gasket plate and its proportioning (dry mass percentage) are as follows:

[0073] Formula B

[0074] Kevlar pulp 10.00%

[0075] Glass fiber (L / D=200) 12.00%

[0076] Carbon fiber (L / D=160) 5.00%

[0077] Fibrous sepiolite 25.00%

[0078] Nitrile Rubber Emulsion 15.00%

[0079] Carboxylated styrene-butadiene emulsion 5.00%

[0080] Zinc Oxide 0.30%

[0081] Antiager D 0.20%

[0082] Casein 0.02%

[0083] Lanolin 0.10%

[0084] Accelerator ZDC 0.20%

[0085] Sulfur 0.30%

[0086] Water-dispersible blocked isocyanate emulsion 2.52%

[0087] Nanoclay 5.00%

[0088] Gypsum Whiskers 4.36%

[0089] Calcium Carbonate 7.00%

[0090] Talc 4.00%

[0091] Diatomaceous earth 4.00%

[0092] 50Kg (dry mass) of the above-mentioned components is obtained according to the above wet-process molding process to obtain the non-asbestos fiber rein...

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Abstract

The present invention belongs to the field of fiber reinforced composite rubber elastomer material producing technology. The technological process includes preparing materials including non-asbestos fiber, rubber emulsion, cross-linking agent, stuffing, auxiliary additive, etc.; treating non-asbestos fiber; compounding emulsion; preparing suspension; forming; drying and rolling sulfurization. The present invention features the specific material proportion, traditional process and wet formation. The technological process is environment friendly and has no environmental pollution, and the sealing gasket plate of the non-asbestos fiber reinforced composite rubber elastomer material has relatively high mechanical performance and chemical corrosion resistance.

Description

technical field [0001] The invention relates to a manufacturing process method for a non-asbestos fiber reinforced latex sealing gasket plate, which belongs to the technical field of fiber reinforced rubber elastic body composite material manufacturing process. Background technique [0002] The non-asbestosization of fiber-reinforced elastomer fluid sealing materials is an inevitable requirement for the development of environmental protection today. Many multinational companies in the United States, Japan and Australia replaced asbestos with aramid temperature-resistant organic fibers or carbon fibers as early as 1984, and used compressed asbestos (CA) to produce non-asbestos gaskets. In 1992, we took the lead in developing the first generation of non-asbestos fiber-reinforced nitrile rubber sheet in my country based on the molding method. Its basic performance is equivalent to that of low-pressure asbestos rubber sheet, but the temperature range that can be used is quite li...

Claims

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Application Information

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IPC IPC(8): C08J5/04C08L21/00
Inventor 胡宏玖刘红谢苏江赵俊瑾
Owner SHANGHAI UNIV
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