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Full-biodegradable modified plastic for plastic-absorbing thin-walled product and preparation method thereof

A thin-walled product and all-biological technology, applied in the field of plastic materials, can solve the problems of low thermal deformation temperature and brittleness of PLA materials, and achieve the effects of simplified process flow, high thermal deformation temperature and simple preparation process

Active Publication Date: 2020-12-08
JIANGXI GREEN ECO MFG RESOURCE CYCLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the above technical deficiencies, to propose a fully biodegradable modified plastic for plastic-absorbing thin-walled products and its preparation method, to solve the problems in the prior art. The technical problems of brittleness and low thermal deformation temperature of PLA materials

Method used

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  • Full-biodegradable modified plastic for plastic-absorbing thin-walled product and preparation method thereof
  • Full-biodegradable modified plastic for plastic-absorbing thin-walled product and preparation method thereof
  • Full-biodegradable modified plastic for plastic-absorbing thin-walled product and preparation method thereof

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preparation example Construction

[0022] see figure 1 , the second aspect of the present invention provides a preparation method of a fully biodegradable modified plastic for blister thin-walled products, comprising the following steps:

[0023] S1: Mix the nucleating agent, chain extender, filler, and color modifier uniformly to obtain a first mixture. In this step, the materials are uniformly mixed in a low-speed mixer, and the speed of the low-speed mixer is 40-60 r / min, the mixing time is 5-10 min, and the mixing temperature is normal temperature (about 20-40° C.).

[0024] S2: Mix PLA, PBS and / or PBAT, crystallization accelerator, and compatibilizer with the above-mentioned first mixture uniformly to obtain a second mixture; in this step, the materials are uniformly mixed in a high-speed mixer, and the high-speed mixer The rotating speed is 300~600r / min, the mixing time is 4~8min, and the mixing temperature is 30~50℃.

[0025] S3: add the second mixture into the twin-screw extruder for extrusion granula...

Embodiment 1

[0031] This embodiment provides a fully biodegradable modified plastic for blister thin-walled products, in parts by weight, including the following components:

[0032]

[0033]

[0034] Specifically, the PLA used is NatureWorks 4032D, the filler is talcum powder, the mesh number is 3000 meshes, the nucleating agent is TMP-6, the crystallization accelerator is glycerol, the chain extender is HDI, and the compatibilizer is maleic anhydride Grafting PLA, the terminator is maleic anhydride, and the color modifier is titanium dioxide.

[0035] The preparation method of the fully biodegradable modified plastic for the blister thin-walled product comprises the following steps:

[0036] Weigh the nucleating agent, the chain extender, the filler, and the color modifier according to the above-mentioned proportions, and mix them uniformly in a low-speed mixer to obtain the first mixture. In this step, the speed of the low-speed mixer is 50 r / min, the mixing time is 8 min, and th...

Embodiment 2

[0041] This embodiment provides a fully biodegradable modified plastic for blister thin-walled products, in parts by weight, including the following components:

[0042]

[0043] Specifically, the PLA used is NatureWorks 2500HP, the filler is talcum powder, and its mesh number is 2000 meshes, the nucleating agent is organic bentonite (particle size 1 μm), the crystallization accelerator is sorbitol, and the chain extender is organic peroxides BPO, the compatibilizer is maleic anhydride grafted PBAT, the terminator is dodecyl mercaptan, and the color regulator is brightener RQT.

[0044] The preparation method of the fully biodegradable modified plastic for the blister thin-walled product comprises the following steps:

[0045] Weigh the nucleating agent, the chain extender, the filler, and the color modifier according to the above-mentioned proportions, and mix them uniformly in a low-speed mixer to obtain the first mixture. In this step, the speed of the low-speed mixer i...

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Abstract

The invention discloses full-biodegradable modified plastic for a plastic-absorbing thin-walled product and a preparation method of the full-biodegradable modified plastic. The full-biodegradable modified plastic for the plastic-absorbing thin-walled product is prepared from the following raw materials, by mass: 75 to 85 parts of PLA, 20 to 30 parts of PBS and / or PBAT, 10 to 30 parts of a filler,0.5 to 1 part of a nucleating agent, 1 to 3 parts of crystallization promoter, 0.3 to 0.5 part of a chain extender, 2 to 5 parts of a compatibilizer, 0.3 to 0.5 part of a terminating agent and 0.5 to2 parts of a color regulator. According to the invention, PLA is modified by using PBS and / or PBAT, and the nucleating agent, the crystallization accelerator, the chain extender, the compatibilizer, the terminator and the filler are added, so that the obtained material has high thermal deformation temperature and good mechanical properties; the preparation process is simple, annealing treatment isnot needed, the technological process is simplified, and the production cost is reduced.

Description

technical field [0001] The invention relates to the technical field of plastic materials, in particular to a fully biodegradable modified plastic for blister thin-walled products and a preparation method thereof. Background technique [0002] In the last century, the vigorous development of polymer science has brought great convenience to people's lives. At the same time, there are more and more wastes after the use of polymer material products, which brings great harm to the environment. With the increasingly serious environmental problems and the strengthening of people's awareness of environmental protection, the disposal of polymer waste has been paid more and more attention. At present, there are two main development directions for the problem of polymer product waste disposal. One is to research and develop the recycling and reuse of waste plastics, and the other is to develop biodegradable plastics. [0003] Biodegradable plastics refer to plastics that are degraded...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08L67/02C08L51/08C08K13/02C08K5/053C08K5/00C08K13/06C08K3/34C08K5/1545C08K5/14C08K3/22C08K5/06
CPCC08L67/04C08L2201/06C08L2205/24C08L2205/08C08L2205/02C08L2205/03C08L2205/035C08K2201/005C08K2003/2241C08L67/02C08L51/08C08K13/02C08K5/053C08K3/34C08K5/0083C08K13/06C08K3/346C08K5/1545C08K5/14C08K3/22C08K5/06
Inventor 许开华吕怀兴秦玉飞李坤刘何丽张云河鲁习金牛远航刘玉清何超超刘锐
Owner JIANGXI GREEN ECO MFG RESOURCE CYCLE
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