Flame-retardant ethylene propylene diene monomer rubber and preparation method thereof

A technology of EPDM rubber and flame retardant, which is used in the field of rubber materials to reduce Mooney viscosity, improve processing performance and meet application requirements.

Inactive Publication Date: 2013-08-21
SHANGHAI UNIV OF ENG SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, how to use dendritic organic montmorillonite to modify EPDM rubber, realize the controllable peeling of montmorillonite and its uniform dispersion and compatibility in the polymer matrix, and obtain uniform flame retardancy and mechanical properties. Excellent flame-retardant EPDM rubber, so far no related reports

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Adjust the roller temperature of the rubber mill to 30°C, add 100g of EPDM rubber matrix, 2g of accelerator M, 0.5g of accelerator S, 1g of stearic acid, 1g of zinc oxide, 3g of anti-aging agent (4010NA, chemical Name: N-isopropyl-N'-phenyl-p-phenylenediamine) into the open mixer, mixing evenly (about 20min);

[0034] Adjust the roller distance to 0.5mm, add 1g of flame retardant (dendritic organic montmorillonite), pound the glue, and knead for 5 minutes; then adjust the roller distance to 3mm, and continue to knead (about 10min) until a smooth and gap-free glue layer is formed ;

[0035] The obtained rubber material is rolled out of the sheet, and after the film is naturally cooled at room temperature (about 8 hours), it is put into the open mill again, and 2g of vulcanizing agent (sulfur) is added to discharge and vulcanize to obtain the flame retardant EPDM rubber.

[0036] The test data of the tensile strength, elongation at break and limiting oxygen index of the...

Embodiment 2

[0041] Adjust the roller temperature of the rubber mill to 45°C, and sequentially add 100g of EPDM rubber matrix, 2.5g of accelerator M, 0.7g of accelerator S, 2g of stearic acid, 2g of zinc oxide, and 4g of anti-aging agent (4010NA, The chemical name is: N-isopropyl-N'-phenyl-p-phenylenediamine) put into the open mixer and mix evenly (about 25min);

[0042] Adjust the roller distance to 1mm, add 5g of flame retardant (dendritic organic montmorillonite), pound the glue, and knead for 10 minutes; then adjust the roller distance to 4mm, and continue to knead (about 15min) until a smooth and gap-free glue layer is formed;

[0043] The obtained rubber material is rolled out of the sheet, and after the film is naturally cooled at room temperature (about 16 hours), it is put into the mill again, and 3g of vulcanizing agent (sulfur) is added to discharge and vulcanize to obtain the flame retardant EPDM rubber.

[0044] The test data of the tensile strength, elongation at break and l...

Embodiment 3

[0049] Adjust the roller temperature of the rubber mill to 60°C, and sequentially add 100g of EPDM rubber matrix, 3g of accelerator M, 0.9g of accelerator S, 3g of stearic acid, 3g of zinc oxide, and 5g of anti-aging agent (4010NA, chemical Name: N-isopropyl-N'-phenyl-p-phenylenediamine) into the open mixer, mixing evenly (about 30min);

[0050] Adjust the roller distance to 1.5mm, add 10g of flame retardant (dendritic organic montmorillonite), pound the glue, and knead for 15 minutes; then adjust the roller distance to 5mm, and continue to knead (about 20min) until a smooth and gap-free glue layer is formed ;

[0051] The obtained rubber material is rolled out of the sheet, and after the film is naturally cooled at room temperature (about 24 hours), it is put into the mill again, and 4g of vulcanizing agent (sulfur) is added to discharge and vulcanize to obtain the flame retardant EPDM rubber.

[0052] The test data of the tensile strength, elongation at break and limiting ox...

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PUM

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Abstract

The invention discloses flame-retardant ethylene propylene diene monomer rubber and a preparation method thereof. The flame-retardant ethylene propylene diene monomer rubber comprises 100 parts by weight of ethylene propylene diene monomer rubber matrix, 2-4 parts by weight of vulcanizing agent, 2-4 parts by weight of accelerant, 1-10 parts by weight of flame retardant, 2-6 parts by weight of processing aid and 3-5 parts by weight of anti-aging agent, wherein the flame retardant is branch-shaped organic montmorillonite. According to the preparation method disclosed by the invention, the flame-retardant ethylene propylene diene monomer rubber with excellent flame retardance, mechanical properties and the like can be obtained by using the branch-shaped organic montmorillonite-modified ethylene propylene diene monomer rubber, the controllable stripping of the montmorillonite in the flame-retardant ethylene propylene diene monomer rubber, the uniform dispersion of the montmorillonite in the polymer matrix and the good compatibility with a polymer can be realized, the Mooney viscosity of the flame-retardant ethylene propylene diene monomer rubber is reduced, the processing performance of the flame-retardant ethylene propylene diene monomer rubber is improved, and the flame-retardant ethylene propylene diene monomer rubber can not only well meet the application requirements of the ethylene propylene diene monomer rubber, but also realize safety and environmental friendliness in use, thus having potential economic benefits and social significance.

Description

technical field [0001] The present invention relates to a kind of EPDM rubber and its preparation method, specifically, it relates to a kind of flame-retardant EPDM rubber modified by dendritic organic montmorillonite flame retardant and its preparation method, which belongs to the rubber material technology field. Background technique [0002] Terpolymer of ethylene-propylene-diene rubber (EPDM) is a terpolymer of ethylene, propylene and non-conjugated diene. Because of its excellent weather resistance, chemical resistance and electrical properties, it is widely used in wires and cables, conveyor belts, rubber hoses , body sealing products and waterproof materials and other fields, and these fields all have high flame-retardant requirements. Therefore, the flame-retardant technology involving EPDM has become a hot research topic. [0003] The flame retardant modification of EPDM rubber is usually carried out by using halogen or hydroxide as flame retardant. However, becau...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08L51/10C08K13/02C08K5/09C08K3/22C08K3/06C08K5/18C08K5/47C08K5/39
Inventor 王锦成杜有成潘晨孙一博赵雯赵艺
Owner SHANGHAI UNIV OF ENG SCI
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