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Fluoroelastomer Composition

IP.com Disclosure Number: IPCOM000243300D
Publication Date: 2015-Sep-18
Document File: 1 page(s) / 15K

Publishing Venue

The IP.com Prior Art Database

Abstract

This program is related to a method of reducing a hardness of fluoroelastomer. The base polymer is a peroxide curable fluoroelastomer. This fluoroelastomer composition can provide a method to reduce a hardness (Durometer A) to less than 65.

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Fluorelastomer Composition

Summary and background

This program is related to a method of reducing a hardness of fluoroelastomer. The base polymer is a peroxide curable fluoroelastomer. This fluoroelastomer composition can provide a method to reduce a hardness (Durometer A) to less than 65.

The hardness (Durometer A) of base fluoroelastomer is over 70 after post cure. However, the specification of the customer is hardness less than 65. In addition, the product using the fluoroelastomer has to endure in the presence of special chemicals such as hydrogen fluoride, ammonium, peroxide and hydrochloric acid solution.

Experiment

This experiment is relating to a method of reducing a hardness.

The fluoroelastomer has excellent chemical resistance. The objective of this trial is to provide a fluoroelastomer composition having a low hardness and strong chemical resistance in the presence of the special chemicals which end user is using.

(Control formulation)

As a raw gum, vinylidene fluoride/hexafluoropropylene/tetrafluoroethylene/cure site monomer peroxide curable terpolymer (%F content: 71%, Mooney viscosity (ML1+10) @ 121 degree C: 70) was used (Fluoroelastomer A). Triaryl isocyanurate (TAIC-70D) (4 phr) and 2,5-bis(tert-butylperoxy)-2,5-dimethyl hexane (DBPH) (1 phr) were mixed with 100 parts of this raw gum using an open roll mill. Subsequently, the unvulcanized compound was press-cured at 165 degree C for 10 minutes using a molding machine, and then was post-cured at 200 deg...