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Vulcanized rubber composition and articles manufactured therefrom

A rubber composition, composition technology, applied in the direction of rubber layered products, applications, layered products, etc., can solve the problems of loss of control of valve opening and closing, loss of pneumatic pressure, etc.

Active Publication Date: 2006-11-29
FISHER CONTROLS INT LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Failure to retain the actuator diaphragm between the actuator housing flanges will result in loss of pneumatic pressure and loss of control over valve opening and closing

Method used

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  • Vulcanized rubber composition and articles manufactured therefrom
  • Vulcanized rubber composition and articles manufactured therefrom

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0035] 1 Parts per 100 parts of copolymer rubber

[0036] 2 Dibutoxyethoxyethyladipate

[0037] 3 N-isopropyl-N-phenyl-p-phenylenediamine (antioxidant)

[0038] 4 N-Cyclohexylthiophthalimide

[0039] 5 Tetramethylthiuram disulfide

[0040] Hybrid scheme

[0041] Banbury Internal Mixer MB (Banbury MB):

[0042] Add the copolymer rubber and break for 1 minute.

[0043] Blend DSC-18 with Ultrasil VN3 and add to mixer immediately.

[0044] Mix Stearic Acid, Kadox 920C and Santogard PVI with 1 / 2 of N-550 Black and add to mixer.

[0045] Sweep, mix Plasthall 226 with remaining N-550 Black and add to mixer.

[0046] Sweep and add Agerite Resin D, Struktol WB-300, Sunproof Junior and Flexzone3C.

[0047] lower or when the temperature reaches 150°C. The Rhenorgran S-80 was added on the mill immediately after combining the batches.

[0048] Blend for 3 minutes and tablet. Store aged for 24 hours before boosting.

[0049] The mill facilitates:

[0050] Combine ...

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PUM

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Abstract

The rubber composition described herein have been found to have an exceptionally long life as a spring-biased actuator diaphragm material that maintains its position compressed, e.g., bolted, between opposed flanges, while maintaining excellent compressibility, low temperature flexibility, hydrocarbon resistance, abrasion resistance and mechanical strength. The compositions include a copolymer rubber component; a plasticizer for the copolymer rubber; a vulcanizing agent for the copolymer rubber; a silica filler; and a coupling agent, such as a silane coupling agent, capable of coupling the silica filler to the copolymer rubber. Ranges may be expressed herein as from 'about' or 'approximately' on particular value and / or to 'about' or 'approximately' another particular value. When such a range is expressed, another embodiment includes from the one particular value and / or to the other particular value.

Description

technical field [0001] The present invention describes vulcanized rubber compositions having excellent hardness characteristics, low temperature flexibility, abrasion resistance, tensile strength, compressive strength and hydrocarbon resistance while maintaining a relatively high coefficient of friction such that when When the composition is compressed between two opposing flanges, it maintains its position between the opposing flanges under repeated stretching. In a preferred embodiment, the rubber composition is synthesized, shaped and then vulcanized for use as a spring loaded actuator diaphragm in a fluid control valve to control the flow of liquid and / or gas such as in natural gas pipelines, as in As described in the assignee's patent application Ser. No. 10 / 360,292 filed February 7, 2003, which is incorporated herein by reference. Background technique [0002] Actuator valves for controlling fluid flow are known in the art and include an actuator housing housing an ac...

Claims

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Application Information

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IPC IPC(8): B32B25/00C08J5/04C08J5/22C08K3/04C08K3/30C08K3/36C08K5/00C08K5/10C08L9/02F16K31/126B32B25/10B32B25/14B32B25/16C08K3/00
CPCC08K5/0016F16K31/1262B32B25/16C08K3/0033B32B25/10B32B25/14C08K3/013Y10T428/31678Y10T428/31692Y10T428/31696Y10T428/31699Y10T428/3175Y10T428/31797Y10T428/31928C08L9/02B32B2038/0076B32B2305/72B32B2475/00
Inventor 特德·丹尼斯·格拉波
Owner FISHER CONTROLS INT LLC
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