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Polyethylene glycol terephthalate (PET) coating composite material and preparation method thereof

A technology of polyethylene terephthalate and composite material, which is applied in the field of polyethylene terephthalate encapsulated composite material and its preparation, can solve the problem of insufficient elongation at break, toughness, compatibility not good and other problems, to achieve the effect of high elongation at break, high toughness and good compatibility

Inactive Publication Date: 2013-06-05
SHENZHEN KEJU NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Its modified material has excellent mechanical properties in a wide temperature range. The long-term use temperature can reach 140 ° C. It has excellent electrical insulation. Even at high temperature and high frequency, its electrical and mechanical properties are still good, friction resistance, Excellent dimensional stability and high heat distortion temperature, but the elongation at break and toughness of PET modified materials in the prior art are insufficient, and the compatibility is not good

Method used

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  • Polyethylene glycol terephthalate (PET) coating composite material and preparation method thereof
  • Polyethylene glycol terephthalate (PET) coating composite material and preparation method thereof

Examples

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Effect test

Embodiment 1

[0016] The polyethylene terephthalate encapsulated composite material of this embodiment is composed of the following components in parts by weight:

[0017] 100 parts of PET, 8 parts of ethylene-vinyl acetate copolymer, 2 parts of compatibilizer, 0.5 part of antioxidant, 3 parts of high polysiloxane.

[0018] The preparation method is as follows:

[0019] Step 1. Weigh each component according to the above-mentioned parts by weight;

[0020] Step 2: Mix the weighed components in a high-speed mixer for 10 minutes;

[0021] Step 3. Add the mixed materials into the hopper of the twin-screw extruder, undergo melting reaction, extrusion, and granulation; the process conditions of the twin-screw extruder are: the temperature in the first zone is 235℃, and the temperature in the second zone is 245℃, temperature in zone three is 255℃, temperature in zone four is 240℃, temperature in zone five is 240℃, residence time is 1min, pressure is 10MPa.

Embodiment 2

[0023] The polyethylene terephthalate encapsulated composite material of this embodiment is composed of the following components in parts by weight:

[0024] 100 parts of PET, 10 parts of ethylene-vinyl acetate copolymer, 3 parts of compatibilizer, 0.8 parts of antioxidant, 4 parts of high polysiloxane.

[0025] The preparation method is as follows:

[0026] Step 1. Weigh each component according to the above-mentioned parts by weight;

[0027] Step 2: Mix the weighed components in a high-speed mixer for 15 minutes;

[0028] Step 3. Add the mixed materials into the hopper of the twin-screw extruder, undergo melt reaction, extrusion, and granulation; the process conditions of the twin-screw extruder are: the temperature in the first zone is 245℃, and the temperature in the second zone is 255℃, temperature in zone three is 265℃, temperature in zone four is 250℃, temperature in zone five is 250℃, residence time is 5min, pressure is 20MPa.

Embodiment 3

[0030] The polyethylene terephthalate encapsulated composite material of this embodiment is composed of the following components in parts by weight:

[0031] 100 parts of PET, 12 parts of ethylene-vinyl acetate copolymer, 3 parts of compatibilizer, 0.8 parts of antioxidant, 4 parts of high polysiloxane.

[0032] The preparation method is as follows:

[0033] Step 1. Weigh each component according to the above-mentioned parts by weight;

[0034] Step 2: Mix the weighed components in a high-speed mixer for 12 minutes;

[0035] Step 3. Add the mixed materials into the hopper of the twin-screw extruder, undergo melting reaction, extrusion, and granulation; the process conditions of the twin-screw extruder are: the temperature in the first zone is 250℃, and the temperature in the second zone is 260℃, temperature in zone three is 260℃, temperature in zone four is 245℃, temperature in zone five is 245℃, residence time is 3min, pressure is 15MPa.

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Abstract

The invention discloses a PET coating composite material and a preparation method thereof. The composite material comprises the following components, by weight, 100 parts of PET, 8-15 parts of an ethylene-vinyl acetate copolymer, 2-4 parts of a compatibilizer, 0.5-1 part of an antioxidant, and 3-5 parts of a high polysiloxane. The preparation method comprises the following steps: 1, weighing above components according to above weight parts; 2, carrying out mixing processing on the weighed components for 10-15min in a high speed mixer; and 3, adding mixed materials to a hopper of a double screw extruder, carrying out a fusion reaction, extruding, and granulating. The composite material of the invention which is added with the compatibilizer and the high polysiloxane allows the PET and the ethylene-vinyl acetate copolymer in a whole system to reach an extremely good compatibility and form a segmented copolymer, so the breaking elongation rate and the toughness of the composite material are high; and the compatibility is good, and adverse cases of unfull coating and extremely easy shedding do not appear.

Description

[Technical Field] [0001] The invention relates to the field of polymer materials, in particular to a polyethylene terephthalate encapsulated composite material and a preparation method thereof. [Background technique] [0002] PET (polyethylene terephthalate) is a polyester resin with high crystallinity and excellent physical and chemical properties. The modified material has excellent mechanical properties in a wide temperature range, the long-term use temperature can reach 140 ℃, excellent electrical insulation, even at high temperature and high frequency, its electrical and mechanical properties are still good, friction resistance, It has excellent dimensional stability and high thermal deformation temperature, but the elongation at break and toughness of the PET modified material of the prior art are insufficient, and the compatibility is not good. [Summary of the Invention] [0003] The invention provides a polyethylene terephthalate encapsulated composite material and a prep...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08L23/08C08L31/04C08L83/04B29C47/92B29C48/92
CPCB29C48/04B29C48/40
Inventor 徐东徐永孙航
Owner SHENZHEN KEJU NEW MATERIAL
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