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Weather-resistant degradable plastic bottle and preparation method

A degradable plastic and weather-resistant technology, which is applied in the field of plastic product production, can solve the problems of poor weather resistance, no UV resistance, poor dispersion of polylactic acid, etc., and achieve the effect of improving UV resistance, improving weather resistance and eliminating odor

Active Publication Date: 2018-12-07
万卓(武汉)新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, attapulgite has poor dispersion in polylactic acid, it is difficult to maximize the reinforcement effect, and it has no UV resistance and poor weather resistance.

Method used

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  • Weather-resistant degradable plastic bottle and preparation method
  • Weather-resistant degradable plastic bottle and preparation method
  • Weather-resistant degradable plastic bottle and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A weather-resistant degradable plastic bottle, the preparation method of which comprises the following steps:

[0034] (1) Dissolve 1 part of sodium pyrophosphate in 100 parts of deionized water, add 20 parts of attapulgite, stir at 30-60°C for 1 hour, take the upper suspension after standing for a while, add HCl solution, Stir at -60 °C for 1 h. centrifuged, washed with water until neutral and then dried to obtain purified attapulgite;

[0035] (2) Add γ-aminopropyltriethoxysilane solution to the purified attapulgite obtained in step (1), stir at 50°C for 2 hours, wash with alcohol and water three times, and then dry to obtain an amination modification After the attapulgite;

[0036] (3) Add a certain amount of xylene, methyl methacrylate, and initiator to the modified attapulgite obtained in step (2), ultrasonically disperse for 10-20min, and stir magnetically at 80°C for 3 minutes under a nitrogen atmosphere. -5h, washing and drying after completion of the reactio...

Embodiment 2

[0039] A weather-resistant degradable plastic bottle, the preparation method of which comprises the following steps:

[0040] (1) Dissolve 1 part of sodium pyrophosphate in 100 parts of deionized water, add 20 parts of attapulgite, stir at 30-60°C for 1 hour, take the upper suspension after standing for a while, add HCl solution, Stir at -60 °C for 1 h. centrifuged, washed with water until neutral and then dried to obtain purified attapulgite;

[0041] (2) Add aminosilane coupling agent solution to the purified attapulgite obtained in step (1), stir at 50°C for 2 hours, wash with alcohol and water three times, and then dry to obtain attapulgite after amination modification ;

[0042](3) Add a certain amount of xylene, methyl methacrylate, and initiator to the modified attapulgite obtained in step (2), ultrasonically disperse for 10-20min, and stir magnetically at 80°C for 3 minutes under a nitrogen atmosphere. -5h, washing and drying after completion of the reaction to obta...

Embodiment 3

[0045] A weather-resistant degradable plastic bottle, the preparation method of which comprises the following steps:

[0046] (1) Dissolve 1 part of sodium pyrophosphate in 100 parts of deionized water, add 20 parts of attapulgite, stir at 30-60°C for 1 hour, take the upper suspension after standing for a while, add HCl solution, Stir at -60 °C for 1 h. centrifuged, washed with water until neutral and then dried to obtain purified attapulgite;

[0047] (2) Add N-β(aminoethyl)-γ-aminopropyltrimethoxysilane solution to the purified attapulgite obtained in step (1), stir at 50°C for 2h, wash with alcohol and water three times respectively After drying, obtain the attapulgite after amination modification;

[0048] (3) Add a certain amount of xylene, methyl methacrylate, and initiator to the modified attapulgite obtained in step (2), ultrasonically disperse for 10-20min, and stir magnetically at 80°C for 3 minutes under a nitrogen atmosphere. -5h, washing and drying after comple...

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Abstract

The invention discloses a weather-resistant degradable plastic bottle and a preparation method thereof. The weather-resistant degradable plastic bottle contains the following components in parts by weight: 50-70 parts of polylactic acid, 15-25 parts of attapulgite / polymethyl methacrylate hybrid particles, 1-5 parts of nano-titanium dioxide, 1-5 parts of nano-zinc oxide, 5-10 parts of glass fibers,0.01-1 part of a plasticizer and 0.05-1.2 parts of a compatibilizer. The plastic bottle prepared by virtue of the preparation method is environment-friendly and degradable, can be applied outdoors and can resist weather, and modified attapulgite-grafted polymethyl methacrylate is introduced, so that the mechanical property and weather resistance of polylactic acid are improved; and meanwhile, byadding nanoparticles, the plastic bottle has the excellent ultraviolet-resistant, sterilization and anti-pollution characteristics.

Description

technical field [0001] The invention relates to the technical field of plastic product production, in particular to a weather-resistant degradable plastic bottle. Background technique [0002] The production process of polylactic acid is non-polluting, the product can be biodegraded, and it can be recycled in nature, so it is an ideal green polymer material. However, the crystallization speed of pure polylactic acid resin is slow, the shrinkage rate of molded products is large, the dimensional stability is poor, the material itself is brittle, and the processing thermal stability is poor, which limits its application as engineering plastics. At the same time, plastic products are easily affected by external conditions such as sunlight, temperature changes, wind and rain, and a series of aging phenomena such as fading, discoloration, cracking, chalking, and strength decline. In addition, the growth of bacteria also affects the preservation of food. . [0003] In recent deca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08L51/10C08K3/22C08K7/14C08F292/00C08F220/14
CPCC08F292/00C08K2003/2241C08K2003/2296C08K2201/011C08L67/04C08L2201/08C08L2203/10C08L51/10C08K3/22C08K7/14C08F220/14
Inventor 邓琪
Owner 万卓(武汉)新材料有限公司
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