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EPDM/EVOH-MAA (ethylene-propylene-diene monomer/ethylene vinyl alcohol-methacrylic acid) dynamically vulcanizled thermoplastic elastomer for separating gas and resisting water vapor and preparation method thereof

A technology of thermoplastic elastomer and water vapor resistance, which is applied in the field of polymer composite materials to improve interfacial compatibility and gas barrier properties

Active Publication Date: 2013-04-03
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional TPV material is composed of EPDM rubber and polypropylene (PP), which has poor permeation resistance to oxygen, nitrogen and other gases and water vapor, and also has insufficient oil resistance and organic solvent resistance. Therefore, its gas barrier properties, air tightness, solvent resistance and wear resistance are poor, which cannot meet the requirements of TPV materials for their gas barrier properties, water vapor resistance, etc. Requirements

Method used

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  • EPDM/EVOH-MAA (ethylene-propylene-diene monomer/ethylene vinyl alcohol-methacrylic acid) dynamically vulcanizled thermoplastic elastomer for separating gas and resisting water vapor and preparation method thereof
  • EPDM/EVOH-MAA (ethylene-propylene-diene monomer/ethylene vinyl alcohol-methacrylic acid) dynamically vulcanizled thermoplastic elastomer for separating gas and resisting water vapor and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] 40 parts of EPDM, 55 parts of EVOH-MAA, 5 parts of EPDM-g-MAH, 2.5 parts of sulfur, 0.5 parts of CZ, 0.3 parts of HAV-2, 0.5 parts of ZnO, 0.5 parts of stearic acid, 0.2 parts of antioxidant 1010, Add 0.2 parts of antioxidant 168 and 0.2 parts of antioxidant DSTDP to the high mixer and mix them well before adding them to the hopper of the extruder. At the same time, add 5 parts of carbon black N330 pre-coupled by NDZ-201 to the side feeding The material is extruded and granulated by a twin-screw extruder. Extrude and granulate through a twin-screw extruder. The temperature of each zone of the extruder is 180°C, 190°C, 190°C, 195°C, 205°C, 210°C, 210°C, 210°C, 210°C, 215°C from the feeding section to the die head. The diameter ratio is 40, the rotation speed of the extrusion screw is 160 rpm, and the main feeding speed is 12 rpm.

[0042]

Embodiment 2

[0044] 50 parts of EPDM, 40 parts of EVOH-MAA, 10 parts of EPDM-g-MAH, 2.5 parts of sulfur, 0.5 parts of CZ, 0.3 parts of HAV-2, 1.5 parts of MgO, 1 part of stearic acid, 3 parts of petroleum wax, 0.2 parts Antioxidant 1010, 0.1 part of antioxidant 168, and 0.3 part of antioxidant DLSTDP were mixed by a high-speed mixer for 3 minutes, mixed evenly and added to the hopper of the extruder, and 5 parts of carbon black N330 pre-coupled by KH550 were added at the same time It is added to the side feed, extruded and granulated by a twin-screw extruder. The temperature of each zone of the extruder is 180°C, 190°C, 190°C, 195°C, 205°C, 210°C, 210°C, 210°C, 210°C, 215°C from the feeding section to the die head. The diameter ratio is 40, the extrusion screw speed is 160 rpm, the main feeding speed is 12 rpm, and the side feeder speed is 2.8 rpm.

[0045]

Embodiment 3

[0047] 60 parts of EPDM, 30 parts of EVOH-MAA, 10 parts of EPDM-g-MAH, 2.5 parts of sulfur, 0.7 parts of DCP, 0.5 parts of CZ, 0.3 parts of HAV-2, 1.5 parts of MgO, 1 part of stearic acid, 10 parts of cyclo Paraffin oil, 0.2 parts of antioxidant 1010, 0.2 parts of antioxidant T1201, 0.2 parts of antioxidant DLSTDP were mixed by high-speed mixer for 3 minutes, mixed evenly and then added to the hopper of the extruder, and 5 parts were pre-coupled by KH560 The treated carbon black N330 was added to the side feed, extruded and granulated by a twin-screw extruder. The temperature of each zone of the extruder is 180°C, 190°C, 190°C, 195°C, 205°C, 210°C, 210°C, 210°C, 210°C, 215°C from the feeding section to the die head. The diameter ratio is 40, the extrusion screw speed is 160 rpm, the main feeding speed is 12 rpm, and the side feeder speed is 2.8 rpm.

[0048]

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Abstract

The invention discloses an EPDM / EVOH-MAA (ethylene-propylene-diene monomer / ethylene vinyl alcohol-methacrylic acid) dynamically vulcanizled thermoplastic elastomer for separating gas and resisting water vapor and a preparation method thereof. The EPDM / EVOH-MAA dynamically vulcanizled thermoplastic elastomer is prepared from EPDM, EVOH-MAA, a compatilizer, a filling reinforcing agent, a vulcanizing agent, a vulcanization accelerator, an active agent, a plasticizer, a coupling agent and an antioxidant. The thermoplastic elastomer prepared by the invention not only has excellent cyclicity and gas barrier property, but also has the characteristics of resistance to water vapor, oil resistivity, abrasive resistance and the like, belongs to the domain of a high-performance engineering thermoplastic elastomer, and has wide application field. The application field comprises the fields such as an electric appliance, mechanical seal, medicine, chemical industry and the like.

Description

technical field [0001] The invention belongs to the technical field of polymer composite materials, and in particular relates to an EPDM / EVOH-MAA dynamically vulcanized thermoplastic elastomer with gas barrier and water vapor resistance and a preparation method thereof. [0002] technical background [0003] Dynamically vulcanized thermoplastic elastomer (Theremoplastic Vukcanizate), referred to as TPV, is thermoplastic EPDM dynamically vulcanized elastomer or thermoplastic EPDM dynamically vulcanized rubber. It is a type of blended thermoplastic elastomer material prepared by dynamic vulcanization technology. Dynamic vulcanization technology means that when thermoplastic resin and rubber are melt blended, the rubber phase undergoes chemical crosslinking under the action of crosslinking, and is sheared and broken into a large number of micron-scale crosslinked rubber particles by means of strong mechanical shearing. The process of dispersing in the continuous phase of ther...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08L51/06C08K13/06C08K9/06C08K9/04C08K3/04C08K3/36B29B9/06B29C47/92B29C48/92
CPCB29C48/04B29C48/022B29C48/92B29C2948/9259B29C2948/92704B29C2948/92828B29C2948/92885B29C2948/92895
Inventor 杨桂生杨军明孙利明石允慧
Owner HEFEI GENIUS NEW MATERIALS