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Double-layer plastic, raw material composition as well as preparation method and application of double-layer plastic

A raw material composition, plastic technology, applied in chemical instruments and methods, layered products, synthetic resin layered products, etc., can solve the problems of slow degradation, poor mechanical properties, low utilization of papermaking waste, etc. Crystal point, low price, the effect of protecting soil

Pending Publication Date: 2022-07-01
SHANGHAI CHANGFA NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a kind of double-layer plastic, in order to overcome the defects of poor mechanical properties of plastic products in the prior art, slow degradation speed in nature, and low utilization of paper-making waste generated in the paper-making industry. Raw material composition and its preparation method and application

Method used

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  • Double-layer plastic, raw material composition as well as preparation method and application of double-layer plastic
  • Double-layer plastic, raw material composition as well as preparation method and application of double-layer plastic
  • Double-layer plastic, raw material composition as well as preparation method and application of double-layer plastic

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0131] (1) The types and amounts of each component in the raw material composition of the outer layer film are shown in Table 1. The particle size of the hemicellulose is 1000 meshes. The raw material composition is added to a high-speed blender and mixed at a temperature of 150°C , the mixing speed is 300rpm, the mixing time is 90min, the above mixture is placed in a twin-screw extruder for extrusion and granulation, and the temperature of the twin-screw extruder from zone one to zone six is ​​150 ℃, 155 ℃, 170°C, 175°C, 180°C and 185°C; the temperature of the head of the twin-screw extruder is 175°C, and the rotational speed of the screw is 250rpm to obtain PE-hemicellulose masterbatch;

[0132] (2) The types and amounts of each component in the raw material composition of the inner layer film are shown in Table 1. The papermaking waste is the dried pulping waste liquid extract, and the particle size is 800 meshes. Each raw material composition is added into a high-speed ble...

Embodiment 2

[0137] (1) See Table 2 for the types and amounts of each component in the raw material composition of the outer layer film. The particle size of the hemicellulose is 1200 mesh. The raw material composition is added to a high-speed blender and mixed at a temperature of 100°C , the mixing speed is 100rpm, the mixing time is 100min, the above mixture is placed in a twin-screw extruder for extrusion and granulation, and the temperature of the twin-screw extruder from zone one to zone six is ​​90 ℃, 135 ℃, 160°C, 165°C, 170°C and 170°C; the temperature of the head of the twin-screw extruder is 170°C, and the rotational speed of the screw is 220rpm to obtain PE-hemicellulose masterbatch;

[0138] (2) See Table 2 for the types and amounts of each component in the raw material composition of the inner layer film. The papermaking waste is obtained by cleaning, drying, pulverizing and sieving the veneer, and the particle size of the dried veneer is 300 meshes. 300rpm, the mixing time i...

Embodiment 3

[0144] (1) See Table 3 for the types and amounts of each component in the raw material composition of the outer layer film. The particle size of the hemicellulose is 1200 meshes. The raw material composition is added to a high-speed blender and mixed at a temperature of 90°C , the mixing speed is 400rpm, the mixing time is 80min, the above mixture is placed in a twin-screw extruder for extrusion and granulation, and the temperature of the twin-screw extruder from zone one to zone six is ​​120 ℃, 145 ℃, 155°C, 170°C, 175°C and 175°C; the temperature of the head of the twin-screw extruder is 175°C, and the rotational speed of the screw is 190rpm to obtain PE-hemicellulose masterbatch;

[0145](2) The types and amounts of each component in the raw material composition of the inner layer film are shown in Table 3. The papermaking waste is obtained by cleaning, drying, pulverizing and sieving the pulp, and the particle size of the dried pulp is 1500 meshes. , adding each raw materi...

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Abstract

The invention discloses a double-layer plastic, a raw material composition as well as a preparation method and application of the double-layer plastic. The raw material composition of the outer layer film of the double-layer plastic comprises the following components in parts by weight: 50-90 parts of first polyethylene, 5-25 parts of hemicellulose, 5-25 parts of first talcum powder, 1-15 parts of biodegradable color masterbatch and 2-15 parts of a first auxiliary agent; the raw material composition of the inner layer film of the double-layer plastic comprises the following components in parts by weight: 40-90 parts of second polyethylene, 5-40 parts of papermaking waste, 5-20 parts of second talcum powder and 2-15 parts of a second auxiliary agent; the first auxiliary agent or the second auxiliary agent is one or more of a compatilizer, a cross-linking agent, a plasticizer and a dispersing agent; the compatilizer is a polyethylene graft and / or an ethylene copolymer. The double-layer plastic prepared by the invention has good stability and mechanical properties; the process route is simple, raw materials are wide in source and low in price, resources can be efficiently utilized, and the environment is protected.

Description

technical field [0001] The invention specifically relates to a double-layer plastic, a raw material composition and a preparation method and application thereof. Background technique [0002] The express delivery industry is one of the fastest growing industries in my country in recent years. Due to the rise of online shopping and e-commerce, the business volume of the express delivery industry has grown rapidly. At the same time, in order to ensure the safety of items and meet the conditions of express transportation, express companies use a large amount of plastic materials to package express items. This express bag is mainly made of PE and other materials. PE is a common petroleum-based plastic because of its high molecular weight. , high hydrophobicity and high chemical bond energy are difficult to be degraded by microorganisms, so they exist and accumulate in the environment for a long time. Since my country has not yet established an effective garbage recycling mechan...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08L5/14C08L23/06C08L97/02B32B27/32B32B27/06B32B27/18B29B7/28B29C48/00B29C48/92B29C55/28
CPCC08L23/0815B32B27/32B32B27/08B32B27/18B29B7/28B29C48/0018B29C48/92B29C55/28B32B2307/716B32B2307/54B32B2307/558B29C2948/9258B29C2948/92704C08L5/14C08L23/06C08L97/02
Inventor 施晓旦甄晓宇金霞朝
Owner SHANGHAI CHANGFA NEW MATERIAL CO LTD
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