Polylactic acid bio-based full-degradable new material and preparation method and application thereof

A polylactic acid and bio-based technology, which is applied in the field of polylactic acid bio-based fully degradable new materials and their preparation, can solve the problems of high production cost, poor material performance, environmental pollution of materials, etc., and achieves saving of existing energy and tensile strength. and the effect of high elongation at break and high degradation rate

Pending Publication Date: 2021-03-12
浙江绿汐环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In summary, the degradable materials in the prior art have the problems of high production cost, environmental pollution, and poor material performance, and further improvement is urgently needed.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] This embodiment provides a method for preparing a polylactic acid bio-based fully degradable new material, the method comprising:

[0029] Put a certain proportion of polylactic acid, polybutylene succinate, vegetable starch, light calcium carbonate, superfine talc, emulsifier, antioxidant A, antioxidant B, and modified auxiliary raw materials at a certain temperature Mix evenly, the mixing temperature of the raw materials is 80-150°C, and the mixing time is 30-50min to obtain a fully biodegradable polylactic acid mixed material; the fully biodegradable polylactic acid mixed material is passed through a three-roll calendering film temperature machine Extruded into a bio-based fully degradable material sheet, the thickness of the polylactic acid bio-based fully degradable new material sheet is less than 0.8mm; The temperature of the hot pressing forming process is 200°C to 300°C, and the hot pressing forming process adopts a positive pressure forming one-time forming pro...

Embodiment 2

[0033] This embodiment provides a method for preparing a polylactic acid bio-based fully degradable new material, the method comprising:

[0034] Put a certain proportion of polylactic acid, polybutylene succinate, vegetable starch, light calcium carbonate, superfine talc, emulsifier, antioxidant A, antioxidant B, and modified auxiliary raw materials at a certain temperature Mix evenly, the mixing temperature of the raw materials is 80-150°C, and the stirring and mixing time is 30-50min to obtain the polylactic acid biodegradable mixture material; the polylactic acid biodegradable mixture material is extruded by a three-roll calender film temperature machine Polylactic acid bio-based fully degradable new material sheet, thickness of polylactic acid bio-based fully degradable new material sheet is less than 0.8mm; The temperature of the finished product is 200°C to 300°C in the hot pressing forming process, and the hot pressing forming process adopts a positive pressure forming...

Embodiment 3

[0038] This embodiment provides a method for preparing a polylactic acid bio-based fully degradable new material, the method comprising:

[0039] Put a certain proportion of polylactic acid, polybutylene succinate, vegetable starch, light calcium carbonate, superfine talc, emulsifier, antioxidant A, antioxidant B, and modified auxiliary raw materials at a certain temperature Mix evenly, the mixing temperature of the raw materials is 80-150°C, and the stirring and mixing time is 30-50min to obtain the polylactic acid biodegradable mixture; the polylactic acid biodegradable mixture is extruded by a three-roll calender film temperature machine to form a poly Lactic acid biodegradable material sheet, polylactic acid biodegradable material sheet thickness is less than 0.8mm; polylactic acid biodegradable material sheet is prepared by hot pressing molding process to obtain finished polylactic acid biodegradable material, the temperature of hot pressing molding process is 200 ℃ ~ 300...

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Abstract

The invention discloses a polylactic acid bio-based full-degradable new material and a preparation method and application thereof. The method comprises the following steps: uniformly mixing polylacticacid, poly (butylene succinate), plant starch, light calcium carbonate, superfine talcum powder, an emulsifier, an antioxidant A, an antioxidant B and a modifying aid raw material according to a certain proportion at a certain temperature, and obtaining a bio-based degradation mixed material; extruding the polylactic acid biodegradable mixed material into a bio-based polylactic acid bio-based fully-degradable new material sheet through a three-roller calendering film temperature controller; the polylactic acid bio-based full-degradable new material sheet is prepared into a polylactic acid bio-based full-degradable new material finished product through a hot press molding process. The polylactic acid bio-based full-degradable new material is high in tensile strength and elongation at break; the polylactic acid full-biodegradable material can be changed into carbon dioxide and water through incineration, landfill, composting, microbial degradation and the like, and existing energy is effectively saved.

Description

technical field [0001] The invention relates to the technical field of environmentally friendly degradable materials, in particular to a new polylactic acid bio-based fully degradable material and its preparation method and application. Background technique [0002] At present, with the improvement of people's living standards, the consumption of plastic products is constantly increasing. However, due to the long-term existence of most plastic products after use, serious white pollution is caused. It is becoming more and more urgent to seek a plastic product that can meet the needs of people and environmental protection, and has aroused widespread interest of researchers. Among them, degradable resin has become a research hotspot due to its degradation characteristics and economic characteristics. [0003] To sum up, the degradable materials in the prior art have the problems of high production cost, environmental pollution, and poor material performance, and further improv...

Claims

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Application Information

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IPC IPC(8): C08L67/04C08L67/02C08L3/02C08K3/26C08K3/34C08K5/134C08K13/02B65D65/46
CPCC08L67/04C08L67/02B65D65/466C08K2003/265C08L2201/06C08L2205/03C08L2205/02C08L3/02C08K3/26C08K3/34C08K5/1345C08K13/02Y02W90/10
Inventor 杨磊
Owner 浙江绿汐环保科技有限公司
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