A kind of hydrophobic and heat-resistant thermoplastic elastomer and its preparation method

A technology of thermoplastic elastomers and elastomers, applied in the direction of plastic/resin/wax insulators, insulators, organic insulators, etc., to achieve the effects of preventing ice hanging, improving thermodynamic compatibility, improving hydrophobicity and heat resistance

Active Publication Date: 2019-11-15
QINGDAO UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

First use POE and MVQ to prepare dynamically vulcanized thermoplastic elastomer (PMTPV), and then blend with PP, which can not only improve the compatibility of PP and MVQ, but also solve the problem of peroxide curing agent degradation of PP

Method used

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  • A kind of hydrophobic and heat-resistant thermoplastic elastomer and its preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0034] (1) First mix MVQ with white carbon black, silane coupling agent, and peroxide vulcanizing agent on an open mill to make MVQ masterbatch, and prepare the next sheet for later use; the ratio is 100:20:1:1.

[0035] (2) Mix POE with the above-mentioned MVQ masterbatch and polytetrafluoroethylene micropowder on a high-temperature open mill, and then cut into strips for subsequent use; the blending ratio is 100:110:6, and the temperature of the high-temperature open mill is 90°C.

[0036] (3) Extrude the above rubber strip with a twin-screw extruder, and dynamically vulcanize it to make PMTPV; the temperature of the feeding section of the extruder is 135°C, the temperature of the plasticizing section is 140°C, the temperature of the extrusion section is 145°C, and the temperature of the head is 140°C , the screw speed is 80rpm.

[0037] (4) After mixing the PP and PMTPV pellets evenly, the ratio is: 100:135; use a twin-screw extruder to extrude and granulate, the temperatu...

Embodiment approach 2

[0039] (1) Mix MVQ with white carbon black, silane coupling agent, and peroxide vulcanizing agent on an open mill, and then prepare the next sheet for later use; the ratio is 100:25:1:1.

[0040] (2) Mix POE and the above-mentioned MVQ masterbatch in an internal mixer evenly, put the sheets on and off the open mixer, cut into rubber strips, and granulate for later use; the blending ratio is 100:120.

[0041] (3) Extrude and granulate the above-mentioned pellets with a twin-screw extruder, and dynamically vulcanize them to make PMTPV; 140°C, the screw speed is 80rpm.

[0042] (4) After mixing PP, PMTPV pellets and polytetrafluoroethylene micropowder evenly, the ratio is: 100:140:5; use a twin-screw extruder to extrude and granulate to obtain the material of the present invention. The temperature of the feeding section of the extruder is 180°C, the temperature of the plasticizing section is 185°C, the temperature of the extrusion section is 190°C, the temperature of the head is 1...

Embodiment approach 3

[0044] (1) First mix MVQ with white carbon black, silane coupling agent, and peroxide vulcanizing agent on an open mill to make MVQ masterbatch, and prepare the next sheet for later use; the ratio is 100:25:1:1.

[0045] (2) Mix POE with the above-mentioned MVQ masterbatch and polytetrafluoroethylene micropowder on a high-temperature open mill, and then cut into strips for later use; the blending ratio is 100:130:6, and the temperature of the high-temperature open mill is 90°C.

[0046] (3) Extrude the above rubber strip with a twin-screw extruder, and dynamically vulcanize it to make PMTPV; the temperature of the feeding section of the extruder is 135°C, the temperature of the plasticizing section is 140°C, the temperature of the extrusion section is 145°C, and the temperature of the head is 140°C , the screw speed is 80rpm.

[0047] (4) After mixing the PP and PMTPV pellets evenly, the ratio is: 100:145; use a twin-screw extruder to extrude and granulate, the temperature of...

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Abstract

The invention relates to a lyophobic and thermal-resistant type thermoplastic elastomer and a preparation method thereof. The preparation method comprises the following steps: by taking polypropylene (PP) as a base material, performing dynamic vulcanization on methyl vinyl silicone rubber (MVQ) and a polyethylene-octylene elastomer (POE) to prepare the thermoplastic elastomer, performing commixing modification on PP and the thermoplastic elastomer by using a double-screw extruder, and further adding polytetrafluoroethylene micro powder of 200 meshes, thereby obtaining a novel thermoplastic material which is good in self-cleaning property, excellent in mechanical property and good in high temperature resistance and can be recycled.

Description

technical field [0001] The invention relates to a hydrophobic and heat-resistant thermoplastic elastomer and a preparation method thereof. POE and MVQ are dynamically vulcanized to make a thermoplastic elastomer (PMTPV), and PP is used as a matrix material, blended with PMTPV, and polytetrafluoroethylene is added. Micropowder, to obtain a hydrophobic and heat-resistant thermoplastic elastomer, which is a dynamic vulcanized thermoplastic elastomer, with self-cleaning, excellent mechanical properties, heat resistance, recyclable and other characteristics; the material can be used for wire and cable, decoration materials and some public facilities materials. Background technique [0002] Thermoplastic dynamically vulcanized elastomers are rubber that is dynamically vulcanized in the molten plastic phase, and at the same time sheared into micron-sized vulcanized particles, dispersed in the plastic phase, thus forming a rubber-plastic two-phase system with a sea-island structure....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/12C08L23/08C08L83/07C08L27/18C08K3/36C08J3/24H01B3/44B29B9/06
CPCB29B9/06C08J3/246C08J2323/12C08J2423/08C08J2427/18C08J2483/07C08L23/12C08L2201/08C08L2203/202C08L2205/02C08L2205/035C08L2207/04H01B3/441C08L23/0815C08L83/04C08L27/18C08K3/36
Inventor 肖雅王彦君史新妍肖建斌
Owner QINGDAO UNIV OF SCI & TECH
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