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Degradable low-density polyethylene material

A low-density polyethylene and ethylene technology, which is applied in the field of degradable low-density polyethylene materials and its preparation, can solve the problems of farmland ecological environment pollution and difficult recycling, and achieve the effect of improving safety performance and flame retardancy

Inactive Publication Date: 2016-03-09
QINGDAO YISHIBAO PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, plastic mulch has been widely promoted in my country. While obtaining huge economic and social benefits, it is difficult to recycle, causing serious pollution to farmland and the ecological environment.

Method used

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  • Degradable low-density polyethylene material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0016] (1) Take each raw material respectively by weight ratio as follows:

[0017] Low-density polyethylene raw material: 60

[0018] Iron stearate: 0.4

[0019] Nano calcium carbonate: 30

[0020] Rare earth photosensitizer: 0.1

[0021] Antioxidant (copolymer of ethylene-octene): 0.5

[0022] (2) First dry mix the above-mentioned various raw materials in a high-speed mixer for 3-5 minutes, and then put them in a twin-screw extruder to melt and extrude, cool, pelletize, and pack the finished product; wherein, the twin-screw extruder The temperature of the first zone is 90-100°C, the second zone is 160-190°C, the third zone is 200-210°C, the fourth zone is 205-210°C; the fifth zone is 190-200°C, and the residence time is 1-2 minutes , the pressure is 10-15Mpa.

[0023] Experimental results:

[0024] The performance has been greatly improved and improved, the flame retardant grade has reached the V0 level, and the rest of the mechanical properties have also been improv...

Embodiment 2

[0026] (1) Take each raw material respectively by weight ratio as follows:

[0027] Low-density polyethylene raw material: 50

[0028] Iron stearate: 0.2

[0029] Nano calcium carbonate: 20

[0030] Rare earth photosensitizer: 0.05

[0031] Antioxidant (copolymer of ethylene-octene): 0.3

[0032] (2) First dry mix the above-mentioned various raw materials in a high-speed mixer for 3-5 minutes, and then put them in a twin-screw extruder to melt and extrude, cool, pelletize, and pack the finished product; wherein, the twin-screw extruder The temperature of the first zone is 90-100°C, the second zone is 150-180°C, the third zone is 200-210°C, the fourth zone is 200-205°C; the fifth zone is 190-200°C, and the residence time is 1-2 minutes , the pressure is 10-15Mpa.

[0033] Experimental results:

[0034]

[0035]

[0036] The above test results show that the flame retardant properties of polyethylene materials have been significantly improved and enhanced, reaching th...

Embodiment 3

[0038] (1) Take each raw material respectively by weight ratio as follows:

[0039] Low-density polyethylene raw material: 70

[0040] Iron stearate: 0.6

[0041] Nano calcium carbonate: 40

[0042] Rare earth photosensitizer: 0.15

[0043] Antioxidant (copolymer of ethylene-octene): 0.7

[0044] (2) First dry mix the above-mentioned various raw materials in a high-speed mixer for 3-5 minutes, and then put them in a twin-screw extruder to melt and extrude, cool, pelletize, and pack the finished product; wherein, the twin-screw extruder The temperature of the first zone is 90-100°C, the second zone is 150-180°C, the third zone is 200-210°C, the fourth zone is 200-205°C; the fifth zone is 190-200°C, and the residence time is 1-2 minutes , the pressure is 10-15Mpa.

[0045] Experimental results:

[0046]

[0047]

[0048] The above experimental results show that the flame retardant performance of the polyethylene material has been significantly improved and improved, ...

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Abstract

The present invention belongs to the technical field of polyethylene material production, and particularly relates to a degradable low-density polyethylene material and a preparation method thereof so as to improve original disadvantages of polyethylene. In the prior art, polyethylene is one of five synthetic resins, and in recent years, a large area of plastic mulch plastic films are promoted, and great economic and social benefits are obtained while serious pollution on farmlands and ecological environments are caused due to difficult recycling, such that the research and development of the degradable plastic is essential.

Description

technical field [0001] The invention belongs to the technical field of polyethylene material production, and specifically relates to improving the original deficiency of polyethylene, providing a degradable low-density polyethylene material and a preparation method thereof. Background technique [0002] Polyethylene, English name: Polyethylene, abbreviated name PE. Its chemical formula is: (C2H4)n. The structural formula is: [0003] -[-CH2-CH2-]-n. [0004] Polyethylene is one of the five major synthetic resins. Low-density polyethylene (LDPE) is suitable for various molding processes of thermoplastic molding processing, and has good molding processability. LDPE is mainly used for film products, but also for injection molding products, medical appliances, pharmaceutical and food packaging materials, blow molding hollow molding products, etc. In recent years, plastic mulch has been widely promoted in my country. While obtaining huge economic and social benefits, it has ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/08C08K5/098C08K3/26B29B9/06B29C47/92B29C48/92
Inventor 栾蓉王世字
Owner QINGDAO YISHIBAO PLASTIC