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Method for direct joint of ethylen-propylene rubber and cast iron

A technology of ethylene-propylene rubber and cast iron, which is applied in the direction of cells, electrolysis, organic chemistry, etc., can solve the problems of changing physical-mechanical properties, and achieve the effects of easy popularization and application, simple process and stable quality

Inactive Publication Date: 2009-04-22
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method adds a small amount of joint promoters to the ethylene-propylene rubber compound, such as organic acids and inorganic acid salts of some polyvalent metals. Although the joint effect can be improved, it will change the original physical-mechanical properties of the rubber material or cause difficulty in mold release. That is, the case of sticky mold

Method used

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  • Method for direct joint of ethylen-propylene rubber and cast iron
  • Method for direct joint of ethylen-propylene rubber and cast iron
  • Method for direct joint of ethylen-propylene rubber and cast iron

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033]The substrate metal used for organic coating is thin-wall tough ductile iron, and the size of the substrate metal in this embodiment is 30×50×4.5 (mm). The chemical composition (wt%) is 3.71C, 2.35Si, 0.19Mn, 0.044Mg, 0.035 Cu, 0.025P and 0.006S.

[0034] Step 1: Organic Coating

[0035] Firstly, the cast iron samples were pre-polished, then ultrasonically degreased in acetone solution for 30 minutes at a temperature of 30 °C, and then carried out organic coating treatment. The specific process conditions and steps are as follows:

[0036] 1. The organic coating adopts a three-electrode working method, the working electrode is a cast iron sheet, the auxiliary electrode is a stainless steel sheet, and the reference electrode is a saturated calomel electrode (SCE);

[0037] 2. The electrolyte solution used in organic coating is composed of the following substances:

[0038]

[0039] 0.5mmol / l triazine organic compound salt containing the above functional groups, 1mol / ...

Embodiment 2

[0047] The substrate metal used for organic coating is thin-wall tough ductile iron, and the size of the substrate metal in this embodiment is 30×50×4.5 (mm). The chemical composition (wt%) is 3.71C, 2.35Si, 0.19Mn, 0.044Mg, 0.035 Cu, 0.025P and 0.006S.

[0048] Step 1: Organic Coating

[0049] Firstly, the cast iron samples were pre-polished, then ultrasonically degreased in acetone solution for 30 minutes at a temperature of 30 °C, and then carried out organic coating treatment. The specific process conditions and steps are as follows:

[0050] 1. The organic coating adopts a three-electrode working method, the working electrode is a cast iron sheet, the auxiliary electrode is a stainless steel sheet, and the reference electrode is a saturated calomel electrode (SCE);

[0051] 2. The electrolyte solution used in organic coating is composed of the following substances:

[0052]

[0053] 1mmol / l triazine organic compound salt containing the functional groups shown in the ...

Embodiment 3

[0061] The substrate metal used for organic coating is thin-wall tough ductile iron, and the size of the substrate metal in this embodiment is 30×50×4.5 (mm). The chemical composition (wt%) is 3.71C, 2.35Si, 0.19Mn, 0.044Mg, 0.035 Cu, 0.025P and 0.006S.

[0062] Step 1: Organic Coating

[0063] Firstly, the cast iron samples were pre-polished, then ultrasonically degreased in acetone solution for 30 minutes at a temperature of 30 °C, and then carried out organic coating treatment. The specific process conditions and steps are as follows:

[0064] 1. The organic coating adopts a three-electrode working method, the working electrode is a cast iron sheet, the auxiliary electrode is a stainless steel sheet, and the reference electrode is a saturated calomel electrode (SCE);

[0065] 2. The plating solution used in organic coating is composed of the following substances:

[0066]

[0067] 2.5mmol / l triazine organic compound salt containing the above functional groups, 5mol / l s...

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Abstract

The invention relates to an adhere method between rubber and metal and surface modify technique, especially a method for combing ethylen-propylene rubber and casting iron. Wherein, the invention uses three electrode method to organic plate film; the electrolyte solution comprises triazine organic compound salt at 0.5-13mmol / l, electrolyte at 0.25-5mol / l; the pH valve of plate liquid is 8-12, the current density is 0.5-2A / m2; the plating time is 10-50min; the function nanometer organic film thickness can be controlled in 6-25nm along the change of current density and plating time; the ethylen-propylene rubber is put on the surface of plated casting iron work piece, to be embedded into mould, keeping temperature at 130-155Deg. C for 3-30min, crosslinking, to obtain the combined ethylen-propylene rubber / casting iron element. The invention has simple process and stable quality.

Description

technical field [0001] The invention relates to a bonding method and surface modification technology for rubber and metal materials, in particular to a method for realizing the direct bonding of ethylene-propylene rubber and cast iron through a functional nanometer organic film. Background technique [0002] Ethylene-propylene rubber and cast iron are two materials with different properties. Due to the high saturation of molecular chains, ethylene-propylene rubber has better weather resistance, ozone resistance, heat resistance and good corrosion resistance than other general-purpose rubbers. Electrical insulation, chemical corrosion resistance; cast iron metal has the advantages of easy forming of complex shape parts, good wear resistance, easy recycling and low cost, and is widely used in engineering and daily life. Therefore, composite parts with different configurations and characteristics can be produced by joining spheroidal graphite iron and ethylene-propylene rubber,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C65/00B29C65/02C25D3/00C25D21/12C25D5/34C25D3/54C07D251/38
Inventor 康志新衷诚武李元元
Owner SOUTH CHINA UNIV OF TECH
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