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Ethylene-propylene-diene monomer rubber seal strip and preparation method thereof

A EPDM rubber and sealing strip technology, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of aging, affecting the sealing performance, shock absorption performance and service life of the sealing strip, and easy to deform, and achieve Good low temperature resistance, meeting application requirements and high elongation at break

Pending Publication Date: 2019-03-01
陕西秦垒建设集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, a large number of sealing strips use rubber materials, which have some defects, and are prone to deformation and aging during long-term use. These phenomena seriously affect the sealing performance, shock absorption performance and service life of the sealing strips.

Method used

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  • Ethylene-propylene-diene monomer rubber seal strip and preparation method thereof
  • Ethylene-propylene-diene monomer rubber seal strip and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] This embodiment provides an EPDM sealing strip, which is made of the following raw materials in parts by weight: 170 parts of EPDM rubber, 75 parts of carbon black, 10 parts of white carbon black, and 5 parts of peroxide vulcanizing agent , 9 parts of zinc oxide, 14 parts of magnesium oxide, 13 parts of paraffin oil, 2 parts of accelerator TMTD, 2 parts of stearic acid, 2 parts of antioxidant MB, and 2 parts of coupling agent.

[0027] Wherein, the peroxide vulcanizing agent is an alkyl peroxide, the paraffin oil is a paraffin oil with a flash point above 280°C and an aromatic content of 0%, and the coupling agent is a silane coupling agent.

[0028] A kind of preparation method of above-mentioned EPDM sealing strip, comprises the steps:

[0029] S1, weigh each raw material of corresponding weight part respectively;

[0030] S2. Add EPDM rubber to the internal mixer for masticating for 6 minutes, and the masticating temperature is 115°C, then add carbon black, white ca...

Embodiment 2

[0035] This embodiment provides an EPDM sealing strip, which is made of the following raw materials in parts by weight: 150 parts of EPDM rubber, 60 parts of carbon black, 12 parts of white carbon black, and 3 parts of peroxide vulcanizing agent , 12 parts of zinc oxide, 12 parts of magnesium oxide, 10 parts of paraffin oil, 1 part of accelerator TMTD, 1 part of stearic acid, 1 part of antioxidant MB, and 1 part of coupling agent.

[0036] Among them, the peroxide vulcanizing agent is diacyl peroxide, the paraffin oil is paraffin oil with a flash point above 280° C. and the content of aromatic hydrocarbon is 0%, and the coupling agent is a titanate coupling agent.

[0037] A kind of preparation method of above-mentioned EPDM sealing strip, comprises the steps:

[0038] S1, weigh each raw material of corresponding weight part respectively;

[0039] S2. Add EPDM rubber into the internal mixer for 5min mastication, the mastication temperature is 110°C, then add carbon black, whi...

Embodiment 3

[0044] This embodiment provides an EPDM sealing strip, which is made of the following raw materials in parts by weight: 180 parts of EPDM rubber, 90 parts of carbon black, 8 parts of white carbon black, and 8 parts of peroxide vulcanizing agent , 6 parts of zinc oxide, 16 parts of magnesium oxide, 18 parts of paraffin oil, 3 parts of accelerator TMTD, 3 parts of stearic acid, 3 parts of antioxidant MB, and 3 parts of coupling agent.

[0045] Wherein, the peroxide vulcanizing agent is an alkyl peroxide, the paraffin oil is a paraffin oil with a flash point above 280°C and an aromatic content of 0%, and the coupling agent is a silane coupling agent.

[0046] A kind of preparation method of above-mentioned EPDM sealing strip, comprises the steps:

[0047] S1, weigh each raw material of corresponding weight part respectively;

[0048] S2. Add EPDM rubber to the internal mixer for mastication for 8 minutes, and the mastication temperature is 125°C, then add carbon black, white car...

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Abstract

The invention discloses an ethylene-propylene-diene monomer rubber seal strip. The ethylene-propylene-diene monomer rubber seal strip is prepared from, by weight, 150-180 parts of ethylene-propylene-diene monomer rubber, 60-90 parts of carbon black, 8-12 parts of white carbon black, 3-8 parts of a peroxide vulcanizing agent, 6-12 parts of zinc oxide, 12-16 parts of magnesium oxide, 10-18 parts ofparaffin oil, 1-3 parts of an accelerant TMTD, 1-3 parts of stearic acid, 1-3 parts of an anti-aging agent MB and 1-3 parts of a coupling agent. The ethylene-propylene-diene monomer rubber seal stripis high in hardness, tensile strength and elongation at break, great in low-temperature resistance and capable of well meeting utilization requirements.

Description

technical field [0001] The invention belongs to the field of sealing strips, and in particular relates to a EPDM sealing strip and a preparation method thereof. Background technique [0002] Rubber sealing strips have been applied to various industries such as automobiles, doors and windows, and exterior wall composite panels. According to the requirements of different industries, unique automotive sealing strips, mechanical sealing strips, and exterior wall sealing strips have been developed. Existing sealing strips for decorative caulking of exterior walls use silicone sealants, which are expensive, and the waterproof materials used are difficult to ensure that they will not age during the service life of the building (50 years as stipulated by the state), and their reliability is relatively poor. According to the actual demand and the actual use and installation conditions of the product, the material of the sealing strip needs to have excellent aging resistance and preve...

Claims

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Application Information

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IPC IPC(8): C08L23/16C08L91/06C08K13/02C08K3/04C08K3/36C08K3/22C08K5/09C08K5/14C09K3/10
CPCC08K2003/222C08K2003/2296C08L23/16C09K3/10C08L91/06C08K13/02C08K3/04C08K3/36C08K3/22C08K5/09C08K5/14
Inventor 秦金垒秦刚垒
Owner 陕西秦垒建设集团有限公司
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