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APET composite material and preparation method thereof, keyboard cover, electronic component tray and preparation method thereof

A technology of electronic components and composite materials, applied in the field of materials, can solve the problems of restricting applications and low transparency of APET keyboard covers

Pending Publication Date: 2020-11-24
深圳市品兴隆塑胶制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a method for preparing an APET composite material, aiming to solve the problem that the existing APET keyboard cover generally has low transparency, which restricts its application in this field

Method used

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  • APET composite material and preparation method thereof, keyboard cover, electronic component tray and preparation method thereof
  • APET composite material and preparation method thereof, keyboard cover, electronic component tray and preparation method thereof

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preparation example Construction

[0022] The embodiment of the present invention provides a method for preparing an APET composite material, comprising the following steps:

[0023] Step 101, weighing each component according to the following formula for later use: 100-150 parts of APET, 2-10 parts of PETG, 5-8 parts of modified loess, 2-7 parts of whitening agent and 1-3 parts of smoothing agent.

[0024] In a preferred embodiment of the present invention, the whitening agent is a mixture of titanium dioxide-coated calcium carbonate and vinyltriethylsilane. The slip agent is a mixture of any two of bio-based slip agent, erucamide slip agent or polyethylene wax.

[0025] The transparency of APET composites can be improved by adding the above-mentioned brightener; adding the above-mentioned smooth agent can not only assist the mixture to be extruded smoothly through the extruder, avoid clogging the die, improve production efficiency, and can give the product Excellent slip properties.

[0026] Step 102, ball ...

Embodiment 1

[0063] The preparation process of the APET composite material in the present embodiment is as follows:

[0064] Weigh each component according to the following formula for later use: 100 parts of APET, 2 parts of PETG, 5 parts of modified loess, 7 parts of whitening agent and slip agent (a mixture of bio-based slip agent and erucamide slip agent) 1 serving.

[0065] The APET is dried at 170° C. for 4 hours, so that the moisture content after drying is lower than 0.005%, and the dried APET is obtained.

[0066] The dried APET was ball milled and blended with PETG, modified loess, whitening agent and smooth agent to form a ball milled blend.

[0067] The temperature of the ball-milled blend was raised to 300° C. at a heating rate of 23° C. / min, and stirred for 60 min at a stirring rate of 1000 r / min to obtain a mixture.

[0068] The mixture is extruded through an extruder and flowed into a three-roll machine through a die for roll forming and cooling to obtain the APET composi...

Embodiment 2

[0070] The preparation process of the APET composite material in the present embodiment is as follows:

[0071] The components were weighed according to the following formula for later use: 120 parts of APET, 8 parts of PETG, 6 parts of modified loess, 5 parts of whitening agent and 3 parts of slip agent (a mixture of bio-based slip agent and polyethylene wax).

[0072] The APET is dried at 180° C. for 4 hours, so that the moisture content after drying is lower than 0.005%, and the dried APET is obtained.

[0073] The dried APET was ball milled and blended with PETG, modified loess, whitening agent and smooth agent to form a ball milled blend.

[0074] The temperature of the ball-milled blend was raised to 350° C. at a heating rate of 25° C. / min, and stirred for 30 min at a stirring rate of 1500 r / min to obtain a mixture.

[0075] The mixture is extruded through an extruder and flowed into a three-roll machine through a die for roll forming and cooling to obtain the APET comp...

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Abstract

The invention is applicable to the technical field of materials, and provides an APET composite material and a preparation method thereof, a keyboard cover, an electronic component tray and a preparation method thereof. The preparation method of the APET composite material comprises the following steps: carrying out ball milling and blending on APET, PETG, modified loess, a whitening agent and a slipping agent according to a specific ratio under the production reaction conditions, heating and stirring, extruding and rolling, cooling and the like to prepare the APET composite material. The transparency of the APET composite material can be remarkably improved, and the tensile property and the slipping property of the APET composite material can be obviously improved.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to an APET composite material and a preparation method thereof, a keyboard cover, an electronic component tray and a preparation method thereof. Background technique [0002] A keyboard cover refers to the protective film that covers the computer keyboard. APET (Amorphous Polyethylene Terephthalate, non-crystalline polyethylene terephthalate) is a thermoplastic environmentally friendly and degradable blister material with low price and excellent chemical resistance, thermoforming performance, mechanical properties, etc. , so it is widely used in the packaging of cosmetics, food, electronics, toys, printing and other industries, for example, various high-grade blister packaging, folding boxes, rubber tubes, windows, heat-shrinkable polyester films, etc. Keyboard covers, trays for electronic components, etc. [0003] For transparent keyboard covers, the transparency of...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L23/06C08K13/06C08K5/20C08K3/36C08K9/10C08K3/26C08K5/5425B65D85/86
CPCC08L67/02B65D85/70C08L2205/025C08L2205/03C08L2201/10C08K2003/265
Inventor 何小刚
Owner 深圳市品兴隆塑胶制品有限公司
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