Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method of blending modified CPET sheet for high-temperature-resistant oven

A technology of blending modification and high temperature resistance, which is applied in the field of preparation of CPET sheets for blending and modified high temperature resistance ovens, can solve the problems of insufficient mechanical strength, resistance to bumps, brittleness, etc., and achieves uniform mechanical strength and no Pollution, improve the effect of thermal storage paste

Pending Publication Date: 2021-03-30
广东金榜塑料包装有限公司
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The foamed CPET sheet and its preparation method in the above patents have the following disadvantages: the mechanical strength is not enough when used, so that the problems of being fragile, easy to crack, and not resistant to bumps appear during use

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of blending modified CPET sheet for high-temperature-resistant oven
  • Preparation method of blending modified CPET sheet for high-temperature-resistant oven

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0019] The preparation method of the blended modified CPET sheet for high temperature resistant oven comprises the following steps: taking PET, modified material, phosphoric acid ester dispersant and organic chemical foaming agent as raw materials according to parts by weight; The material is subjected to ultrasonic dispersion treatment; the modified material after ultrasonic dispersion treatment and the remaining raw materials are heated to 180-200°C, mixed for 1-2 hours, and then extruded. The frequency range of the ultrasonic treatment is 20KHz-50KHz, and the power used is 700-1500W.

[0020] In the embodiment of the present invention, PET is used as the main raw material for preparation. PET refers to polyethylene terephthalate, which is a crystalline saturated polyester, and is a milky white or light yellow, highly crystalline polymer with a smooth and shiny surface. It is a common resin in daily life. It has excellent physical and mechanical properties in a wide temperat...

Embodiment 1

[0031] The raw materials are weighed according to the following parts by weight: 100 parts of PET, 5 parts of graphene, 1 part of phosphate ester dispersant, 1 part of organic chemical foaming agent; ultrasonic dispersion treatment is carried out to graphene, and the ultrasonic treatment frequency is a frequency range of 20KHz, And the power used is 700W; the graphene after ultrasonic dispersion treatment and the remaining raw materials are heated to 180°C, mixed for 1 hour, and then extruded. Cut the test sample of 10cm×10cm×10cm, measure its maximum tensile strength and elongation at break by stretching the test sample in the transverse and longitudinal directions; and tear the test sample in the transverse and longitudinal directions to measure the tearing force of the test sample ; Extrude the experimental sample with a pressing force of 100N in the transverse and longitudinal directions, and measure the dimensional change rate of the experimental sample.

Embodiment 2

[0033] The raw materials are weighed according to the following parts by weight: 100 parts of PET, 27 parts of graphene, 3 parts of phosphate ester dispersant, 3 parts of organic chemical foaming agent; ultrasonic dispersion treatment is carried out to graphene, and the frequency range of ultrasonic treatment is 35KHz, And the power used is 1100W; the graphene after the ultrasonic dispersion treatment and the remaining raw materials are heated to 190°C, mixed for 1.5 hours, and then extruded. Cut the test sample of 10cm×10cm×10cm, measure its maximum tensile strength and elongation at break by stretching the test sample in the transverse and longitudinal directions; and tear the test sample in the transverse and longitudinal directions to measure the tearing force of the test sample ; Extrude the experimental sample with a pressing force of 100N in the transverse and longitudinal directions, and measure the dimensional change rate of the experimental sample.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Diameteraaaaaaaaaa
Lengthaaaaaaaaaa
Monofilament diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses the technical field of high polymer materials, and provides a preparation method of a blending modified CPET sheet for a high-temperature-resistant oven, and the blending modified CPET sheet for the high-temperature-resistant oven is composed of the following components, by weight: 100 parts of PET, 5-50 parts of a modified material, 1-6 parts of a phosphate dispersing agent and 1-5 parts of an organic chemical foaming agent. The uniformity index and the mechanical property of a sheet product are effectively improved, inorganic particles or fiber materials are subjectedto ultrasonic dispersion, and the dispersion property of the inorganic particles or fiber materials is improved; meanwhile, when the inorganic particles or fiber materials are blended with PET, the inorganic particles or fiber materials can be rapidly adsorbed to the surface of PET due to the small size and the large specific surface area of PET. Therefore, the prepared sheet product is uniform in mechanical strength, the raw materials are better dispersed, and the extruded CPET sheet is uniform in performance.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a preparation method of a blended modified CPET sheet for a high temperature resistant oven. Background technique [0002] CPET is a polyethylene terephthalate material, odorless, tasteless, colorless and non-toxic. It is recognized as the best food packaging material in the world today. ℃ special materials. Products made of CPET materials can process various foods directly in the oven. During the heating process, no harmful substances and gases will be released, and it is called green packaging by countries such as Europe and the United States. The CPET material itself has good barrier properties, the oxygen permeability rate is only 0.03%, and the barrier properties become stronger as it is heated, and its functions of food preservation and quality preservation are incomparable to any material. It is widely used in aviation meals and is a common material for oven l...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C08L67/02C08L77/10C08K3/04C08K5/521C08K7/10C08J9/10C08J5/18
CPCC08J9/102C08J9/107C08J9/105C08J5/18C08J9/0061C08J9/0038C08J9/0085C08J9/0095C08J2203/04C08K3/042C08K5/521C08K7/10C08J2367/02C08J2477/10
Inventor 梁炜浩陈洲阳李昌奋
Owner 广东金榜塑料包装有限公司