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Environment-friendly EPDM (Ethylene Propylene Diene Monomer) and NBR (Nitrile Butadiene Rubber) combined closed-pore secondary foam material and preparation method thereof

A technology of EPDM rubber and nitrile rubber, which is applied in the field of environmentally friendly EPDM rubber and nitrile rubber combined with closed-cell secondary foaming materials and its preparation, to overcome the high halogen content, reduce costs, Effect of improving ozone resistance

Active Publication Date: 2015-02-11
YIBAO FUJIAN POLYMER MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to provide a kind of environment-friendly type EPDM rubber and nitrile rubber combined closed-cell secondary foaming material and preparation method thereof. Lower cost, improve the ozone resistance, weather resistance, low temperature resistance and dielectric properties of NBR; and overcome the disadvantages of high halogen content in existing foaming materials

Method used

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  • Environment-friendly EPDM (Ethylene Propylene Diene Monomer) and NBR (Nitrile Butadiene Rubber) combined closed-pore secondary foam material and preparation method thereof
  • Environment-friendly EPDM (Ethylene Propylene Diene Monomer) and NBR (Nitrile Butadiene Rubber) combined closed-pore secondary foam material and preparation method thereof
  • Environment-friendly EPDM (Ethylene Propylene Diene Monomer) and NBR (Nitrile Butadiene Rubber) combined closed-pore secondary foam material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The formula of this embodiment is as shown in Table 1, EPDM is ethylene propylene diene monomer rubber, and NBR is nitrile butadiene rubber. The preparation method of present embodiment raw material is as follows:

[0031] (1) Banbury

[0032] A. Put EPDM, NBR, 1 / 2 ratio of carbon black, 1 / 2 ratio of magnesium powder, softening oil KN4006, and American white clay into the internal mixer according to the weight parts shown in Table 1 to form a mixed rubber.

[0033] B. Put zinc oxide and stearic acid 1801 in the parts by weight shown in Table 1 into the internal mixer and knead with the mixed rubber for 1-2min.

[0034] C. Put the remaining 1 / 2 ratio of carbon black and 1 / 2 ratio of magnesium powder into the internal mixer and knead for 1-2min.

[0035] D. Put the foaming agent OBSH and the sulfur accelerator EG-4 into the internal mixer according to the weight parts shown in Table 1, and then carry out pressurized kneading for 8-10min, and the hammer pressure is 5KG. ...

Embodiment 2

[0049] The formula of this embodiment is as shown in Table 4, EPDM is ethylene propylene diene monomer rubber, and NBR is nitrile butadiene rubber. The preparation method of the foam material of this embodiment is the same as that of Embodiment 1.

[0050] Table 2 also shows the physical performance test results of the halogen-free environment-friendly EPDM rubber and nitrile rubber combined with secondary closed-cell foaming materials obtained in the present invention. In this example, the halogen-free and environment-friendly EPDM and NBR combined with the secondary closed-cell foaming material SGS halogen element test report is also shown in Table 3.

[0051]The combination of EPDM and NBR rubber in this example has excellent ozone resistance, aging resistance and good oil resistance, solvent resistance and chemical resistance through a reasonable formula and preparation process. It can be seen from the previous two test reports , the halogen-free environment-friendly EPDM...

Embodiment 3

[0053] The formula of this embodiment is as shown in Table 5, EPDM is ethylene-propylene-diene rubber, and NBR is nitrile butadiene rubber. The preparation method of the foam material of this embodiment is the same as that of Embodiment 1.

[0054] Table 2 also shows the physical performance test results of the halogen-free environment-friendly EPDM rubber and nitrile rubber combined with secondary closed-cell foaming materials obtained in the present invention. In this example, the halogen-free and environment-friendly EPDM and NBR combined with the secondary closed-cell foaming material SGS halogen element test report is also shown in Table 3.

[0055] The combination of EPDM and NBR rubber in this example has excellent ozone resistance, aging resistance and good oil resistance, solvent resistance and chemical resistance through a reasonable formula and preparation process. It can be seen from the previous two test reports , the halogen-free environment-friendly EPDM and NB...

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Abstract

The invention discloses an environment-friendly EPDM (Ethylene Propylene Diene Monomer) and NBR (Nitrile Butadiene Rubber) combined closed-pore secondary foam material and a preparation method thereof. The environment-friendly EPDM and NBR combined closed-pore secondary foam material comprises the following raw materials in part by weight: 60 to 120 parts of EPDM; 27 to 36 parts of NBR; 8 to 15 parts of carbon black; 10 to 15 parts of magnesium powder; 15 to 35 parts of America argil; 10 to 15 parts of softening oil; 2 to 3 parts of foaming agent; 1.5 to 2 parts of sulphur accelerator; 4 to 6 parts of zinc oxide; and 1.5 to 2.5 parts of stearic acid. The invention has the advantages of combining rubber performances, reducing the cost and improving the performances of ozone resistance, weather resistance, low temperature resistance and the like of the NBR, the dielectric performance and the like and overcoming the defect of higher content of halogen in the traditional foam material.

Description

technical field [0001] The invention relates to an environment-friendly closed-cell secondary foam material combined with EPDM and nitrile rubber NBR and a preparation method thereof. Background technique [0002] EPDM is a copolymer of ethylene, propylene and an unsaturated third monomer. It is a high-saturation rubber with excellent heat resistance, ozone resistance, acid and alkali resistance, weather aging resistance, fatigue resistance, and anti-aging properties. Tear and other properties, can be used for a long time under the condition of -60 ° C ~ 135 ° C, widely used in the fields of automobile manufacturing, construction, wire and cable and polymer modification, etc., its molecular chain is basically aliphatic saturated chain, lacking Active groups and polar substituent groups, so the vulcanization speed is slow, and the oil resistance and adhesion are poor. [0003] Nitrile rubber has good oil resistance, abrasion resistance, bond strength, small compression defor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/16C08L9/02C08K13/02C08K3/34C08K3/04C08K3/22C08J9/10B29C47/92B29C35/00B29C48/92
CPCB29C47/92B29C48/92B29C2948/92561B29C2948/9259B29C2948/92704B29C2948/92885B29C2948/92895B29C2948/92923
Inventor 陈奕汲侯汝红
Owner YIBAO FUJIAN POLYMER MATERIALS
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