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Tunnel duct piece joint waterproof ethylene propylene diene monomer rubber sealing gasket and preparation method thereof

A technology of EPDM rubber and tunnel segments, which is applied in the field of rubber gaskets, can solve the problems of product failure, poor water resistance and water pressure resistance, and can not be satisfied, so as to improve the water pressure resistance, excellent water resistance, The effect of meeting the waterproof ability index

Inactive Publication Date: 2016-08-17
HUAINAN CAOAN RUNLONG PLASTIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the rapid development of science, technology and industry, the performance requirements of EPDM sealing materials are getting higher and higher. The EPDM gaskets used for tunnel segment joints in the existing market have water resistance and The disadvantage of poor water pressure resistance can easily lead to product failure and fail to meet market demand

Method used

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Examples

Experimental program
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Embodiment Construction

[0015] A waterproof EPDM gasket for tunnel segment joints, made of the following raw materials (kg): EPDM rubber 42, chlorobromobutyl rubber 28, polyurea resin 23, zinc sulfite 4.5, polycarbodiimide 6, epoxidized soybean oil 10, divinylbenzene 7, magnesium powder 15, dilauryl thiodipropionate 2.5, 4,4-di(tert-butylperoxy)valeric acid N-butyl ester 5, polymerized rosin 7, imidazolidinyl urea 4, titanium nitride 12, tetrabenzylthiuram disulfide 2.5, diethylene glycol dibenzoate 9, ammonium zirconium carbonate 6, isobutylene triethoxysilane 3. Modifier 14;

[0016] The preparation method of described modifying agent is as follows: (1) get the raw material of following weight (kg): blast furnace water-quenched slag 17, titanium carbide 15, aluminum-magnesium spinel 12, silicon boride 11, cocoyl methyl boron Sodium Sulfonate 2.5, Lauryl Phosphate Betaine 2, Glucosaminoglycan 1.5, Tallow Amine Polyoxyethylene Ether 5, Jojoba Acid Polyoxypropylene Ester 4, Sorbitol Polyoxyethylene E...

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PUM

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Abstract

The invention discloses a tunnel duct piece joint waterproof ethylene propylene diene monomer rubber sealing gasket and a preparation method thereof. The tunnel duct piece joint waterproof ethylene propylene diene monomer rubber sealing gasket is prepared from, by weight, 33-47 parts of ethylene propylene diene monomer rubber, 24-35 parts of brominated butyl rubber, 16-27 parts of polyurea resin, 3-6 parts of zinc hydrosulfite, 4-7 parts of polycarbodiimide, 8-12 parts of epoxidized soybean oil, 6-9 parts of divinyl benzene, 14-18 parts of strong magnesium powder, 2-3 parts of dilauryl thiodipropionate, 4-6 parts of 4,4-bis(tertiary butyl peroxide)butyl isovalerate, 5-8 parts of polymerized rosin, 3-5 parts of imidazolidinyl urea, 10-15 parts of titanium nitride, 2-3 parts of tetrabenzylthiuramdisulfide, 7-11 parts of diethylene glycol dibenzoate, 4-8 parts of carbonic acid ammonium zirconium salt, 2-4 parts of isobutylene triethoxy silane and 12-16 parts of modifier. The prepared sealing gasket is high in mechanical strength and excellent in water resistance, the water pressure resisting capacity reaches 2.5 MPa or above, and the waterproof capacity index is met.

Description

technical field [0001] The invention relates to a rubber sealing pad, in particular to a waterproof EPDM rubber sealing pad for tunnel segment joints and a preparation method thereof. Background technique [0002] Ethylene-propylene-diene rubber (EPDM) is a general-purpose synthetic rubber with low unsaturation, which is polymerized with ethylene and propylene as the main raw materials and a small amount of non-conjugated dienes under the action of Zeigler-Netta catalyst. Because of its high chemical stability, good ozone resistance, weather resistance, oxidation resistance, corrosion resistance and excellent electrical insulation performance, it can be widely used in the production of sealing materials. With the rapid development of science, technology and industry, the performance requirements of EPDM sealing materials are getting higher and higher. The EPDM gaskets used for tunnel segment joints in the existing market have water resistance and The disadvantage of poor wa...

Claims

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Application Information

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IPC IPC(8): C08L23/16C08L23/28C08L75/02C08L79/00C08K13/06C08K9/04C08K3/14C08K3/22C08K3/38C08K5/3445C08K3/26C08K5/5415B29C35/02
CPCB29C35/02C08L23/16C08L2201/08C08L2205/035C08L23/283C08L75/02C08L79/00C08K13/06C08K9/08C08K9/04C08K3/14C08K2003/2227C08K2003/222C08K3/38C08K5/3445C08K3/26C08K5/5415
Inventor 徐良建张群
Owner HUAINAN CAOAN RUNLONG PLASTIC CO LTD
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