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Microporous ethylene propylene diene monomer aerator pipe and preparation method thereof

A technology of EPDM rubber and aeration tubes, which is applied in the field of rubber, can solve problems such as easy breakage, and achieve the effects of strong tensile resistance, environmentally friendly materials, and high temperature resistance

Active Publication Date: 2021-04-09
DANYANG WANBEN AUTOMOTIVE PARTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] By providing a microporous EPDM aeration tube, the present invention solves the defect that the rubber material aeration tube in the prior art is easy to break under high temperature, and the obtained EPDM rubber aeration tube has excellent mechanical properties performance, and the surface is smooth, no warping, no smell, especially able to work stably under high temperature conditions

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0052] The second aspect of the present invention provides a method for preparing a microporous EPDM aeration pipe, and the specific preparation steps include:

[0053] S1. Mixing: Add rubber, reinforcing agent, softener, filler, hygroscopic agent, zinc oxide, stearic acid, and polyethylene glycol into the internal mixer according to the formula amount and mix. The working conditions of the internal mixer are: The cooling water pressure is 0.4MPa, the air pressure is 0.4-1MPa, and the mixing time is 500-700 seconds. When the temperature of the mixed rubber reaches 130-140°C, the glue is removed to obtain the mixture 1;

[0054] S2. Tabletting: cooling the mixture 1 into tablets on the open mill, and parked for 24 hours to obtain the mixture 2;

[0055] S3. Add small ingredients: heat up at a rate of 5-10°C / min, add an accelerator when the temperature rises to 60-70°C, add sulfur when the temperature rises to 75-85°C, and pass three times to obtain a mixture three;

[0056] S4...

Embodiment 1

[0060] This embodiment provides a microporous EPDM aeration tube. In parts by weight, its raw materials include: 76 parts of rubber, 18 parts of reinforcing agent, 20 parts of softening agent, 24 parts of filler, and 4 parts of hygroscopic agent. parts, 5 parts of zinc oxide, 2.5 parts of stearic acid, 3 parts of polyethylene glycol, 1.5 parts of accelerator, and 1.6 parts of sulfur.

[0061] The rubbers are EPDM A and EPDM B. The weight ratio of EPDM A to EPDM B is 2:1.

[0062] The EPDM rubber A was purchased from Arlanxeo High Performance Elastomers (Changzhou) Co., Ltd., model number 10660C.

[0063] The EPDM rubber B was purchased from SK Group in Korea, and the model is S7486F.

[0064] The reinforcing agent is N550, purchased from Dongguan Dingxin Plastic Raw Material Co., Ltd.

[0065] The softener is petroleum wax, the melting point of which is 60° C., purchased from Jinan Tiantian Xinyuan Trading Co., Ltd.

[0066] The filler is calcium carbonate, and the particl...

Embodiment 2

[0076] This embodiment provides a microporous EPDM aeration tube. In parts by weight, its raw materials include: 62 parts of rubber, 14 parts of reinforcing agent, 15 parts of softening agent, 20 parts of filler, and 3 parts of hygroscopic agent. 1 part, 4 parts of zinc oxide, 2 parts of stearic acid, 1 part of polyethylene glycol, 0.5 part of accelerator, 1 part of sulfur.

[0077] The rubbers are EPDM A and EPDM B. The weight ratio of EPDM A to EPDM B is 2:1.

[0078] The EPDM rubber A was purchased from Arlanxeo High Performance Elastomers (Changzhou) Co., Ltd., model number 10660C.

[0079] The EPDM rubber B was purchased from SK Group in Korea, and the model is S7486F.

[0080] The reinforcing agent is N550, purchased from Dongguan Dingxin Plastic Raw Material Co., Ltd.

[0081] The softener is petroleum wax, the melting point of which is 60° C., purchased from Jinan Tiantian Xinyuan Trading Co., Ltd.

[0082] The filler is calcium carbonate, and the particle size of ...

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Abstract

The invention relates to the technical field of rubber, in particular to a microporous ethylene propylene diene monomer aerator pipe and a preparation method thereof. The rubber material is prepared from the following raw materials in parts by weight: 60-94 parts of rubber, 12-24 parts of a reinforcing agent, 14-36 parts of a softening agent, 20-36 parts of a filling agent, 2-6 parts of a moisture absorbent, 4-6 parts of zinc oxide, 2-3 parts of stearic acid, 1-5 parts of polyethylene glycol, 0.5-3 part of an accelerant and 1-2 parts of sulfur. The prepared rubber material for the automobile gas explosion pipe has excellent mechanical properties, the shore hardness can reach 63 + / -2HA, the high temperature resistance is high, and the shore hardness change of the material is less than 10HA after the material is placed at 150 DEG C for 72 hours; meanwhile, the tensile strength of the material is larger than 10 MPa, the elongation at break is larger than 300%, and the tensile resistance of the material is high; the material is smooth and flat, has no bubbles, has no defects such as buckling deformation after extrusion, and has high appearance quality; the rubber material is simple in preparation process, environment-friendly in material, excellent in performance and wide in application prospect.

Description

technical field [0001] The invention relates to the technical field of rubber, in particular to a microporous EPDM aeration pipe and a preparation method thereof. Background technique [0002] Rubber refers to a highly elastic polymer material with reversible deformation. It is elastic at room temperature, can produce large deformation under a small external force, and can return to its original shape after the external force is removed. EPDM rubber is a copolymer of ethylene, propylene and a small amount of non-conjugated dienes. Its main chain is composed of chemically stable saturated hydrocarbons, and only unsaturated double bonds are contained in the side chains. Ethylene-propylene rubber has excellent aging resistance such as ozone resistance, heat resistance, and weather resistance, so it is used in the production of automotive parts, automotive seals, waterproof materials for construction, wire and cable sheathing materials, as well as railway transportation, pipelin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08L71/02C08L91/06C08K3/26C08K3/22C08K5/09C08K13/02C08J9/00
CPCC08L23/16C08J9/0061C08J9/0095C08L2205/035C08L2205/025C08L2205/03C08L2203/18C08L2201/08C08K2003/265C08K2003/2296C08J2323/16C08J2423/16C08J2471/02C08J2491/06C08L71/02C08L91/06C08K3/26C08K3/22C08K5/09C08K13/02Y02W10/10
Inventor 张鑫
Owner DANYANG WANBEN AUTOMOTIVE PARTS
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