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Adhesive used for bonding vulcanized ethylene propylene diene monomer rubber and cast iron, and application thereof

A technology for vulcanizing ternary and ethylene-propylene rubber, applied in the direction of adhesive, adhesive type, bonding method, etc., can solve the problems of complex process and high production cost, and achieve the effect of improving surface energy, increasing surface area and reducing production cost

Inactive Publication Date: 2013-01-30
NANJING UNIV OF INFORMATION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The domestic use of vulcanized EPDM rubber and cast iron is usually bonded with unvulcanized EPDM rubber and metal first, then put into the mold for vulcanization and heat preservation. For example, the production process of the shock absorber is: the wheel hub and the Calculate the mass of the unvulcanized EPDM rubber from the volume of the gap between the inertia blocks, squeeze the unvulcanized EPDM rubber into the gap between the wheel hub and the inertia block coated with adhesive in advance, and then put it into the mold for heating and heat preservation , complex process and high production cost

Method used

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  • Adhesive used for bonding vulcanized ethylene propylene diene monomer rubber and cast iron, and application thereof
  • Adhesive used for bonding vulcanized ethylene propylene diene monomer rubber and cast iron, and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Adhesive preparation: The adhesive was prepared by mixing Chemlok-250# 65%, Lekna-1# 30%, and epoxy resin 5% by weight.

[0022] Surface treatment: mechanical grinding (brushing treatment, grinding with wooden file and sandpaper), vulcanized EPDM rubber 1 (a sample with a length of 155mm, a width of 25mm, and a thickness of 2mm) and cast iron 2 (a sample with a length of 240mm, a width of 30mm, and a thickness of 2mm) sample) and then cleaned with acetone, then soaked vulcanized EPDM rubber in sulfuric acid for 5 minutes, and finally washed with cold water and hot water in turn, and dried (it can be dried naturally). The surface treatment of cast iron adopts mechanical grinding method (that is, sandpaper grinding to remove rust), acetone degreasing, cold water, hot water cleaning and drying, that is, removing sulfuric acid soaking process and other process conditions remain unchanged.

[0023] Glue application: apply adhesive 3 on the bonded surface after surfac...

Embodiment 2

[0026] Adhesive preparation: Prepare the adhesive by mixing 80% of Chemlok-250#, 15% of Lekna-1#, and 5% of epoxy resin by weight.

[0027] Surface treatment: mechanically grind (with wooden files, sandpaper, etc.) the bonding surface of vulcanized EPDM rubber 1 and cast iron 2, then clean it with acetone, then soak the vulcanized EPDM rubber in sulfuric acid for 10 minutes, and finally Wash with cold water, hot water in turn, and dry (just dry naturally). The surface treatment of cast iron adopts mechanical grinding method (that is, sandpaper grinding to remove rust), acetone degreasing, cold water, hot water cleaning and drying, that is, removing sulfuric acid soaking process and other process conditions remain unchanged.

[0028] Glue application: apply adhesive 3 to the bonded surface after surface treatment, and let it dry naturally for 5 minutes.

[0029] Curing: according to figure 2 Bond the bonding surface as shown, and then cure after bonding. The curing ...

Embodiment 3

[0031] Adhesive preparation: Prepare the adhesive by mixing Chemlok-250# 70%, Lekna-1# 25%, and epoxy resin 5% by weight.

[0032] Surface treatment: mechanically grind and vulcanize (with wooden files, sandpaper, etc.) the bonding surface of EPDM rubber 1 and cast iron 2, then clean it with acetone, and then soak the vulcanized EPDM rubber in sulfuric acid for 5 minutes; finally Wash with cold water, hot water in turn, and dry (just dry naturally). The surface treatment of cast iron adopts mechanical grinding method (that is, sandpaper grinding to remove rust), acetone degreasing, cold water, hot water cleaning and drying, that is, removing sulfuric acid soaking process and other process conditions remain unchanged.

[0033] Glue application: apply adhesive 3 on the bonded surface after surface treatment, and let it dry naturally for 3 minutes.

[0034] Curing: according to figure 2 Bond the bonding surface as shown, and then cure after bonding. The curing pressur...

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Abstract

The invention discloses an adhesive used for bonding vulcanized ethylene propylene diene monomer rubber and cast iron, and an application thereof. The adhesive comprises, by weight, 65-80% of Chemlok-250#, 15-30% of polyisocyanate adhesive-1#, and 5% of epoxy resin. A method for bonding vulcanized ethylene propylene diene monomer rubber and cast iron by using the adhesive comprises the steps that: bonding surfaces are subjected to surface treatments; the adhesive is applied; bonding is carried out after the adhesive is dried; and a curing treatment is carried out, wherein pressurizing and heating are carried out during a curing process, such that a bonding effect is achieved. The bonding method of vulcanized ethylene propylene diene monomer rubber and cast iron is simple, and a finished product can satisfy bonding performance requirements.

Description

technical field [0001] The invention relates to an adhesive used for bonding vulcanized EPDM rubber and cast iron and its application. Background technique [0002] At present, the world's adhesive market is developing extremely rapidly, and it has been widely used in industrial applications. Adhesives in the automotive industry are mainly used in: ① car body and roof reinforcement plate, ② double-layer shell roof, ③ shock absorber, ④ clutch and transmission belt, etc. Among them, the shock absorber is composed of a hub, an inertia block and a shock-absorbing rubber ring. The design of the shock-absorbing rubber ring must be reasonable, and its shape, installation position and elastic modulus must also be appropriate. Under actual application conditions, temperature, oil pollution, ozone and sunlight are often encountered. In order to keep the performance of the shock absorber unchanged for a long time, vulcanized EPDM rubber with excellent ozone resistance and sunlig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J201/00C09J201/06C09J163/00C09J5/00C09J5/02C09J5/04
Inventor 王玲杨春军苏静
Owner NANJING UNIV OF INFORMATION SCI & TECH
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