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Thermoplastic wood-plastic composite packaging plastic and preparation method thereof

A wood-plastic composite and packaging plastic technology, which is applied in the field of packaging materials, can solve the problems of difficult thermal plasticization processing packaging films, etc., and achieve the effects of easy large-scale promotion and use, improved packaging quality, and good texture

Pending Publication Date: 2020-06-23
四川锦盛瑞科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the current problem that wood-plastic composite materials are difficult to thermally plasticize and process into packaging films by filling and compounding, in order to promote wood-plastic composite plastics in the field of packaging on a large scale, this invention proposes a thermoplastic wood-plastic composite packaging plastic. The special thermoplastic treatment of the shell makes the obtained wood-plastic composite packaging plastic have good thermoplastic processability, and can be directly calendered and stretched on the calendering equipment to be processed into packaging film or sheet

Method used

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  • Thermoplastic wood-plastic composite packaging plastic and preparation method thereof
  • Thermoplastic wood-plastic composite packaging plastic and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] S1: First, wash the rice husks with clean water to remove impurities such as soil, sand and gravel; then soak them in 200mL / L hydrogen peroxide solution for re-bleaching for 10 minutes, filter to remove the hydrogen peroxide solution, wash them again with clean water for 3 times, and then Drying at 80°C to obtain bleached rice husk powder;

[0037] S2: Mix bleached rice husk powder with 1250-mesh fine talcum powder, citric acid, and dispersant ethylene bis fatty acid amide at a mass ratio of 6:1:0.3:0.05, and pass through the two-stage vortex airflow micromachine, of which the first-stage airflow The rotating speed of the crushing knife is 600rpm, and the rotating speed of the primary classification is 900rpm; the rotating speed of the secondary airflow crushing knife is 1500rpm, and the rotating speed of the secondary classification is 1200rpm; through the high-speed rotating moving knife, a strong airflow is generated to make the material appear in a suspended flow in ...

Embodiment 2

[0042] S1: First, wash the rice husk with clean water to remove impurities such as soil, sand and gravel; then soak it in 200mL / L hydrogen peroxide solution for re-bleaching for 20 minutes, filter to remove the hydrogen peroxide solution, wash it again with clean water for 3 times, and then Drying at 80°C to obtain bleached rice husk powder;

[0043] S2: Mix bleached rice husk powder with 1250-mesh fine talcum powder, citric acid, and dispersant pentaerythritol stearate at a mass ratio of 6:1:0.3:0.1, and pass through the two-stage vortex airflow fine machine, of which the first-stage airflow The speed of the pulverizing knife is 800rpm, and the speed of the primary classification is 900rpm; the speed of the secondary airflow pulverizing knife is 1000rpm, and the speed of the secondary classification is 1200rpm; through the high-speed rotating moving knife, a strong airflow is generated to make the material appear in a suspended flow in the grinding chamber The air flow and th...

Embodiment 3

[0048] S1: First, wash the rice husk with clean water to remove impurities such as soil, sand and gravel; then soak it in 200mL / L hydrogen peroxide solution for re-bleaching for 20 minutes, filter to remove the hydrogen peroxide solution, wash it again with clean water for 3 times, and then Drying at 80°C to obtain bleached rice husk powder;

[0049] S2: Mix bleached rice husk powder with 1250-mesh fine talcum powder, citric acid, and dispersant ethylene bis fatty acid amide at a mass ratio of 6:1:0.2:0.1, and pass through a two-stage vortex airflow micromachine, of which the first-stage airflow The rotational speed of the pulverizing knife is 800rpm, and the rotational speed of the primary classification is 1000rpm; the rotational speed of the secondary airflow pulverizing knife is 1500rpm, and the rotational speed of the secondary classification is 1500rpm; through the high-speed rotating moving knife, a strong airflow is generated to make the material appear in a suspended f...

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Abstract

The invention relates to the field of packaging materials, in particular to thermoplastic wood-plastic composite packaging plastic and a preparation method. Specifically, during rice hull micronization treatment, talcum powder, a dispersing agent and citric acid are added, and secondary airflow refining is assisted by the talcum powder and the dispersing agent, so that rice hull powder is micronized into micron-sized particles without agglomeration; citric acid is added during micronization, so that the surface of micronized rice hull powder is slightly hydrolyzed, the crystallinity is reduced, and permeation and plasticization of a plasticizer are facilitated; according to the wood-plastic composite packaging plastic and the preparation method thereof, the rice hull powder and polyolefinare compounded to have better compatibility and thermoplastic processing characteristics, the obtained wood-plastic composite packaging plastic can be directly extruded, calendered and stretched to prepare a packaging film or sheet, various prepared packaging bags and packaging boxes have good texture, and the packaging quality is greatly improved. The preparation method of the thermoplastic wood-plastic composite packaging plastic is easy to control and easy to popularize and use on a large scale.

Description

technical field [0001] The invention relates to the field of packaging materials, in particular to plastic packaging materials, and further specifically relates to a thermoplastic wood-plastic composite packaging plastic and a preparation method thereof. Background technique [0002] Plastic packaging has now become an essential and important packaging material in daily life. With the development of polymer technology, packaging plastics are widely used in chemical, food, daily necessities, medicine and other fields. Plastic packaging is commonly used as a single-layer packaging film obtained by blown film, calendering, biaxial stretching, etc., such as PE plastic packaging film, PO plastic packaging film, BOPP plastic packaging film, etc. With the continuous development of packaging requirements, various composite packaging and functional packaging have been developed. Composite packaging plastic film is composed of two or more layers of composite materials. The packagin...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08L23/06C08L51/06C08L97/02C08K5/134C08K3/34C08K5/092C08K5/20C08K5/053C08K5/526C08K13/02
CPCC08L23/0815C08L2205/035C08L2203/16C08L23/06C08L51/06C08L97/02C08K5/1345C08K3/34C08K5/092C08K5/20C08K5/053C08K5/526C08K13/02
Inventor 张强莫刚
Owner 四川锦盛瑞科技发展有限公司
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