Crosslinked modified elastomer composite, elastomer flexible pipe, and preparation method for flexible pipe

A technology of cross-linking modification and elastomer, which is applied in the direction of hoses, pipes, mechanical equipment, etc., can solve the problems of poor hygienic performance, low corrosion resistance, complicated preparation methods, etc., and achieve improved environmental stress cracking resistance, The effect of increasing production speed

Active Publication Date: 2012-05-02
RIFENG ENTERPRISE FOSHAN CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In short, the shortcomings of the pipes disclosed in the prior art are that some have poor hygienic performance, poor heat resistance, and low corrosion resistance, and their preparation methods are more complicated and costly.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A cross-linked modified elastomer hose with a DN of 8 mm and a wall thickness of 1.8 mm was prepared.

[0045] The cross-linked modified elastomer composition of this embodiment is prepared using the following raw materials in parts by weight:

[0046] Ethylene-vinyl acetate copolymer VA600 (Hyundai Co., Ltd., 28% vinyl acetate content) 100Kg,

[0047] Vinyltrimethoxysilane (Degussa company, trade mark VTMO) 1.5Kg,

[0048] Di-tert-butylperoxycumene 0.6Kg,

[0049] Phenols (Clariant, brand 168) 0.2Kg,

[0050] Dibutyltin dilaurate (Dow Corning Company, brand D-22) 0.13Kg,

[0051] Silicone grease (3M company, brand PPA) 0.2Kg.

[0052] Prepare hose with the above-mentioned cross-linked modified elastomer composition according to the following method:

[0053] A, the obtained cross-linked modified elastomer composition is mixed uniformly;

[0054]b. Add the cross-linked modified elastomer composition in step a into a single-screw reaction extruder (model SJ-80 / 30),...

Embodiment 2

[0062] A cross-linked modified elastomer hose with a DN of 10 mm and a wall thickness of 2.0 mm was prepared.

[0063] The cross-linked modified elastomer composition of this embodiment is prepared using the following raw materials in parts by weight:

[0064] Ethylene-vinyl acetate copolymer Sumitate KA-31 (Sumitomo Corporation, 28% vinyl acetate content)

[0065] 100Kg,

[0066] Vinyltrimethoxysilane (Degussa company, brand VTMO) 1.0Kg,

[0067] Vinyl triethoxysilane (Degussa company, trade mark VTEO) 0.6Kg,

[0068] Tert-butyl hydroperoxide (produced by Shanghai Gaoqiao Chemical Factory) 0.8Kg,

[0069] Phenols (Clariant company, grade 168) 0.3Kg,

[0070] Dibutyltin dilaurate (Dow Corning Company, brand D22) 0.2Kg,

[0071] Silicone grease (3M company, brand PPA) 0.1Kg.

[0072] Prepare hose with the above-mentioned cross-linked modified elastomer composition according to the following method:

[0073] A, the obtained cross-linked modified elastomer composition is m...

Embodiment 3

[0078] A cross-linked modified elastomer hose with a DN of 10 mm and a wall thickness of 2.0 mm was prepared.

[0079] The cross-linked modified elastomer composition of this embodiment is prepared using the following raw materials in parts by weight:

[0080] Ethylene-vinyl acetate copolymer 7074M (Taiwan Plastics, 26% vinyl acetate content) 100Kg,

[0081] Vinyltrimethoxysilane (Degussa company, brand VTMO) 1.0Kg,

[0082] Vinyl triethoxysilane (Degussa company, trade mark VTEO) 0.4Kg,

[0083] Benzoic acid peroxide (produced by Shanghai Gaoqiao Chemical Factory) 0.7Kg,

[0084] Phenols (Ciba company, brand 1010) 0.2Kg,

[0085] Phenols (Line company, brand 168) 0.2Kg,

[0086] Dibutyltin dilaurate (Dow Corning Company, brand D-22) 0.16Kg,

[0087] Silicone lubricating grease (3M company, brand PPA) 0.3Kg.

[0088] Prepare hose with the above-mentioned cross-linked modified elastomer composition according to the following method:

[0089] A, the obtained cross-linked ...

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Abstract

The invention discloses a crosslinked modified elastomer composite, a flexible pipe which is prepared from the elastomer composite, and a preparation method for the elastomer flexible pipe. The crosslinked modified elastomer composite consists of ethylene-vinyl acetate copolymer, vinylsilane, organic peroxide, a catalyst, phenolic antioxidant, and silicone lubricating grease in a certain proportion; and a novel elastomer flexible pipe is prepared by extruding the elastomer composite which is used as a raw material by an extruder, and performing hydrolizing and crosslinking reaction. During production of the flexible pipe, the production efficiency of the flexible pipe is greatly improved in a negative-pressure sizing forming mode which increases air gaps. The hot strength, corrosion resistance, and the environmental stress cracking resistance of the prepared elastomer flexible pipe are greatly improved, and the elastomer flexible pipe has wide application prospect.

Description

technical field [0001] The invention relates to a cross-linked modified elastomer composition, an elastomer hose prepared from the cross-linked modified elastomer composition and a preparation method thereof. Background technique [0002] The hoses used for fluid delivery in the existing market are basically made of raw materials such as PVC, LDPE or EPDM. In this type of hose, PVC has poor hygienic performance and usually has a strong peculiar smell, so it is not suitable for drinking water transportation; LDPE and EPDM hoses have better hygienic performance, but are not heat resistant enough, so they can only be used for cold water transportation . [0003] Chinese patent document CN1269895C discloses a production method of a low-pollution hose and a rubber composition used for the hose. Mixed. The production method is that the mixed rubber composition is extruded and coated on a metal mandrel, and then vulcanized and cross-linked, and then the mandrel is drawn out to o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08K5/5425C08K5/14C08K5/13C08K5/57F16L11/04B29C47/92C08J7/12B29C48/92
CPCB29C48/09B29C48/92B29C2948/92514B29C2948/926B29C2948/92895
Inventor 金季靖彭晓翊
Owner RIFENG ENTERPRISE FOSHAN CO LTD
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