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PET (polyethylene terephthalate) composite material and preparation method thereof

A composite material and formula technology, applied in the field of PET composite materials and their preparation, can solve the problems of easy hydrolysis, poor weather resistance, acid and alkali resistance of PET composite materials, and achieve the effects of increasing hydrolysis resistance, improving mechanical properties and low cost.

Inactive Publication Date: 2014-01-08
SHENZHEN KEJU NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the embodiments of the present invention is to provide a PET composite material, which aims to solve the problems of easy hydrolysis, acid and alkali resistance, and poor weather resistance of the PET composite material

Method used

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  • PET (polyethylene terephthalate) composite material and preparation method thereof
  • PET (polyethylene terephthalate) composite material and preparation method thereof
  • PET (polyethylene terephthalate) composite material and preparation method thereof

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preparation example Construction

[0034] Correspondingly, the embodiment of the present invention also provides a method for preparing a PET composite material, including the following steps, as shown in the attached figure 1 Shown:

[0035] S01. Weighing formula components: weigh each component according to the above-mentioned PET composite material formula;

[0036] S02. Prepare a mixed material: perform mixing treatment on the weighed components except the modified glass fiber to obtain a mixed material;

[0037] S03. Melt extrusion of materials: feed the mixed material from the main feed port, and feed the modified glass fiber from the side feed port for melt extrusion and granulation;

[0038] The melting adopts twin-screw extrusion, and the extrusion process conditions are: the temperature of the first zone is 260-270°C, the temperature of the second zone is 270-280°C, the temperature of the third zone is 270-290°C, and the temperature of the fourth zone is 260-280°C , the head temperature is 280-290°C...

Embodiment 1

[0047] A PET composite material, the formulation components it includes and the mass percentages of the corresponding components are shown in Example 1 in Table 1 below.

[0048] Preparation method of PET composite material:

[0049] (1) Weigh each component according to the formula of Example 1 in Table 1;

[0050] (2) Mix the above-mentioned components except the modified glass fiber in a medium-speed mixer to obtain a mixed material;

[0051] (3) Add the mixed material from the main feeding port, add the modified glass fiber by side feeding, melt and blend, extrude and granulate to form a composite material. The temperature of each section is as follows: the temperature of the first zone is 260°C; the temperature of the second zone is 270°C; the temperature of the third zone is 280°C; the temperature of the fourth zone is 270°C;

Embodiment 2

[0053] A PET composite material, the formulation components it includes and the mass percentages of the corresponding components are shown in Example 2 in Table 1 below.

[0054] Preparation method of PET composite material:

[0055] (1) Weigh each component according to the formula of Example 2 in Table 1;

[0056] (2) Mix the above-mentioned components except the modified glass fiber in a medium-speed mixer to obtain a mixed material;

[0057] (3) Add the mixed material from the main feeding port, add the modified glass fiber by side feeding, melt and blend, extrude and granulate to form a composite material. The temperature of each section is as follows: the temperature of the first zone is 260°C; the temperature of the second zone is 270°C; the temperature of the third zone is 280°C; the temperature of the fourth zone is 270°C;

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Abstract

The invention is applicable to the technical field of high-molecular materials, and provides a PET (polyethylene terephthalate) composite material and a preparation method thereof. The PET composite material comprises the following formula components in percentage by weight: 30-60% of PET, 10-25% of polyphenylene sulfide, 20-40% of modified glass fiber, 3-6% of compatible flexibilizer, 0.4-0.8% of heat stabilizer, 0.4-0.8% of anti-ultraviolet agent, 0.5-1.0% of lubricant and 1-2% of black masterbatch. The preparation method comprises the steps of weighing the formula components, preparing a mixture, and performing melt extrusion of the mixture. The PET composite material provided by the invention has good mechanical properties and excellent hydrolysis resistance, acid-base resistance and weather resistance. The method provided by the invention has the advantages of simple technology, low production cost and high production benefit and is suitable for industrial production.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a PET composite material and a preparation method thereof. Background technique [0002] PET (polyethylene terephthalate) material is a crystalline polymer with good creep resistance, fatigue resistance, friction resistance, dimensional stability, and folding resistance, but its mechanical properties need to be improved. Improve. PET composite materials are low in price and excellent in performance, and are widely used in appearance parts, structural parts, functional parts, etc. Most of the existing PET materials use ordinary glass fiber as a reinforcing agent. The reinforced PET composite material has increased mechanical properties and excellent strength and toughness. However, when it is used to make outdoor parts, especially automotive exterior parts, due to There are disadvantages such as easy hydrolysis, no acid and alkali resistance, and poor weath...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L81/02C08K13/06C08K9/06C08K9/04C08K7/14C08K5/3475B29B9/06B29C47/92B29C48/92
CPCB29C48/92B29C2948/92514B29C2948/92704B29C2948/92876B29C2948/92895
Inventor 徐东周兵徐永
Owner SHENZHEN KEJU NEW MATERIAL
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