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Shield adhesive and preparation method thereof

A technology of shield glue and adhesive, applied in adhesives, mining equipment, shaft equipment, etc., can solve the problems of poor bonding effect of adhesives, difficult bonding of EPDM rubber, and difficult bonding

Active Publication Date: 2013-01-30
SUZHOU JINQIANG NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

EPDM is a non-polar material, and it is difficult to bond
[0007] EPDM rubber is a kind of difficult-to-bond material, and the general non-grafted or poorly grafted adhesives have poor bonding effect

Method used

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  • Shield adhesive and preparation method thereof
  • Shield adhesive and preparation method thereof
  • Shield adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Embodiment 1 Preparation of shield adhesive

[0049] Mix 20kg of dimethyl carbonate, 20kg of ethyl acetate, and 60kg of cyclohexane evenly in the reactor, add 40kg of nano-aluminum metal phenolic resin, heat to 40°C, turn on the stirrer until the nano-aluminum metal phenolic resin is completely dissolved, Add 4kg of nano-magnesium oxide and 0.22kg of catalyst triethanolamine, keep the temperature at 40°C, and react for 14h to obtain a phenolic pre-reaction body.

[0050] Mix 20kg of dimethyl carbonate, 20kg of ethyl acetate, and 60kg of cyclohexane evenly in the reactor, add 70kg of neoprene film A90, 20kg of A30, and after completely dissolving at 40°C, add 25kg of MMA, 7kg of styrene, acrylic acid -2-Hydroxypropyl ester 17kg, acrylic acid 1kg, 50kg in total, after stirring evenly, then add initiator benzoyl peroxide 1kg and nano magnesium oxide 4kg, heat up to 80°C, after reacting for 4 hours, add terminator terephthalate Phenol 1kg, cooled to obtain grafted neoprene...

Embodiment 2

[0052] Example 2 Preparation of shield adhesive

[0053] Mix 20kg of dimethyl carbonate, 20kg of ethyl acetate, and 60kg of cyclohexane evenly in the reactor, add 40kg of phenolic resin, heat to 40°C, turn on the agitator until the phenolic resin is completely dissolved, and add 4kg of nano-magnesium oxide With 0.22kg of catalyst triethanolamine, the temperature was kept at 40°C, and reacted for 15 hours to obtain a phenolic pre-reaction body.

[0054] Mix 20kg of dimethyl carbonate, 20kg of ethyl acetate, and 60kg of cyclohexane evenly in the reactor, add 75kg of neoprene film A90, 25kg of A30, and after completely dissolving at 40°C, add 25kg of MMA, 10kg of styrene, acrylic acid -2-Hydroxypropyl ester 12kg, acrylic acid 3kg, after a total of 50kg, after stirring evenly, then add initiator benzoyl peroxide 1.5kg and nano-magnesium oxide 4kg, heat up to 80°C, after reacting for 4.5h, add terminator to Hydroquinone 1.2kg, cooling, obtains graft neoprene.

[0055] Add the pre...

Embodiment 3

[0056] Example 3 Preparation of shield adhesive

[0057] Mix 20kg of dimethyl carbonate, 20kg of ethyl acetate, and 60kg of cyclohexane in the reactor, add 40kg of phenolic resin, heat to 40°C, turn on the agitator until the phenolic resin is completely dissolved, and add 4kg of nano-magnesium oxide With 0.22kg of catalyst triethanolamine, the temperature was kept at 40°C, and reacted for 16 hours to obtain a phenolic pre-reaction body.

[0058]Mix 20kg of dimethyl carbonate, 20kg of ethyl acetate, and 60kg of cyclohexane evenly in the reactor, add 80kg of neoprene film A90, 30kg of A30, after completely decomposing at 40°C, add 25kg of MMA, 13kg of styrene, acrylic acid - 10kg of 2-hydroxypropyl ester, 2kg of acrylic acid, 50kg in total, after stirring evenly, then add 1.5kg of initiator benzoyl peroxide and 4kg of nano-magnesium oxide, heat up to 80°C, and after reacting for 5 hours, add terminator p-benzene Diphenol 1.5kg, cooling, obtains graft neoprene.

[0059] Add the...

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Abstract

The invention relates to a shield adhesive and a preparation method thereof. The shield adhesive comprises the following raw materials by weight: 90 to 110 parts of a chloroprene rubber adhesive, 50 parts of acrylic acid ester, 1 to 3 parts of organosilicon, 40 parts of a phenolic resin, 4 to 8 parts of nanometer magnesium oxide, 100 parts of a solvent, 0.22 to 0.44 part of a catalyst, 1 to 1.5 parts of an initiator, 1 to 1.5 parts of a terminator and 20 to 40 parts of a fire retardant. According to the invention, A90 and A30 are added into the sliced chloroprene rubber adhesive for blending to improve heat resistance of the sliced chloroprene rubber adhesive, and then an obtained mixture and acrylate undergo ternary polymerization. The shield adhesive provided by the invention has high bonding strength and strong high temperature resistance and is applicable to subways, underground roads and tunnels at the bottom of a sea (a river or a lake).

Description

technical field [0001] The invention relates to a shield adhesive and a preparation method thereof. Background technique [0002] Due to the large-scale urban municipal engineering construction in our country, especially the construction of underground railways, river bottom tunnels, lake bottom tunnels, and submarine tunnels, it is necessary to solve the waterproof problem of the tunnels. The shield tunneling method is one of the most commonly used methods. Shield segment elastic gasket is the mainstream material for water sealing. These gaskets are generally composed of EPDM rubber and expanded rubber. EPDM rubber is a non-polar material, and it is difficult to bond. [0003] At present, there are many products in the domestic market, good and bad, including neoprene adhesives, SBS adhesives and polyurethane adhesives. The strength of neoprene adhesive and SBS adhesive is not ideal, and the heat resistance of polyurethane adhesive is not enough (generally thermoplastic...

Claims

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Application Information

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IPC IPC(8): C09J151/04C09J161/14C08F279/02C08F8/42C08G8/28E21D9/06E21D11/38
Inventor 曹建强
Owner SUZHOU JINQIANG NEW MATERIALS
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