Adhesive for hot water-cured lining hard rubber and preparation method thereof

Abstract

The invention relates to an adhesive for lining hard rubber, in particular to an adhesive for hot water-cured lining hard rubber, which is a mixture of components A and B in a weight part ratio of 4:1. The component A comprises 100 parts of natural rubber, 1 to 3 parts of pigment, 20 to 40 parts of sulfur, 50 to 150 parts of zinc oxide, 15 to 40 parts of tackifying resin, 1 to 3 parts of accelerator DM1, 2 to 5 parts of mixed oil 933 and 400 to 700 parts of mixed solvent, wherein the mixed solvent is 2 or 3 of toluene, dimethylbenzene and gasoline. The component B comprises solution of polyisocyanate. Before use, the component B is added into the component A, the components are mixed uniformly (for at least 1 minute), and the adhesive for brushing can be obtained. The adhesive is applicable to hot water-cured lining hard rubber and has big adhesion force.

Description

technical field

[0001] The invention relates to a rubber adhesive, in particular to an adhesive for lining hard rubber. Background technique

[0002] Hot water vulcanized lining hard rubber is characterized by low vulcanization temperature, and the lining is soaked in water, and the water has strong permeability to the lining and its adhesive before vulcanization. The existing adhesives for low-temperature vulcanization, that is, self-vulcanizing adhesives, are only two types of neoprene and butyl rubber, which are only suitable for bonding soft rubber. When the lining is vulcanized in hot water, the bonding strength cannot meet the standard requirements. Contents of the invention

[0003] The present invention aims to solve the above-mentioned defects, and provides an adhesive for hot water vulcanization of lining hard rubber. The adhesive of the invention can be applied to lining hard rubber vulcanized by hot water, and has high bonding strength.

[0004] The present ...

Examples

Embodiment Construction

[0024] The present invention will be further described below by means of specific embodiments:

[0025] A hot water vulcanized adhesive for lining hard rubber, which includes the preparation of component A and the preparation and application of the adhesive;

[0026] Group A (parts by weight):

[0027] a. 100 parts of natural rubber

[0028] b. 1~3 parts of pigment

[0029] c. 20~40 parts of sulfur

[0030] d. Zinc oxide 50~150 parts

[0031] e. Tackifying resin 15~40 parts

[0032] f. Accelerator DM 1~3 parts

[0033] g. Mixed oil 933 2~5 parts

[0034] 400-600 parts of mixed solvent; said mixed solvent is two or three kinds of toluene, xylene and gasoline.

[0035] Preparation of the mixed rubber of component A: After weighing a~g materials, mix the rubber on the open mill or internal mixer, mix evenly and press out 1~10mm rubber sheets on the open mill, and cut them after cooling. into small pieces;

[0036] Preparation of component A: Add the above-mentioned mixed...

technical field

[0001] The invention relates to a rubber adhesive, in particular to an adhesive for lining hard rubber. Background technique

[0002] Hot water vulcanized lining hard rubber is characterized by low vulcanization temperature, and the lining is soaked in water, and the water has strong permeability to the lining and its adhesive before vulcanization. The existing adhesives for low-temperature vulcanization, that is, self-vulcanizing adhesives, are only two types of neoprene and butyl rubber, which are only suitable for bonding soft rubber. When the lining is vulcanized in hot water, the bonding strength cannot meet the standard requirements. Contents of the invention

[0003] The present invention aims to solve the above-mentioned defects, and provides an adhesive for hot water vulcanization of lining hard rubber. The adhesive of the invention can be applied to lining hard rubber vulcanized by hot water, and has high bonding strength.

[0004] The present ...

Examples

Embodiment Construction

[0024] The present invention will be further described below by means of specific embodiments:

[0025] A hot water vulcanized adhesive for lining hard rubber, which includes the preparation of component A and the preparation and application of the adhesive;

[0026] Group A (parts by weight):

[0027] a. 100 parts of natural rubber

[0028] b. 1~3 parts of pigment

[0029] c. 20~40 parts of sulfur

[0030] d. Zinc oxide 50~150 parts

[0031] e. Tackifying resin 15~40 parts

[0032] f. Accelerator DM 1~3 parts

[0033] g. Mixed oil 933 2~5 parts

[0034] 400-600 parts of mixed solvent; said mixed solvent is two or three kinds of toluene, xylene and gasoline.

[0035] Preparation of the mixed rubber of component A: After weighing a~g materials, mix the rubber on the open mill or internal mixer, mix evenly and press out 1~10mm rubber sheets on the open mill, and cut them after cooling. into small pieces;

[0036] Preparation of component A: Add the above-mentioned mixed...