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Easy-to-clean high-temperature-resistant polylactic acid composite material for environment-friendly tableware

A composite material and polylactic acid technology, which is applied in the field of high temperature resistant polylactic acid composite material and its preparation, can solve the problem of increasing the interface bonding force between inorganic fillers and organisms, improving the easy cleaning performance of polylactic acid products, and crystallization of polylactic acid composite materials. Slow speed and other problems, to achieve the effects of excellent hydrophilic ability, improved interfacial adhesion, and good hydrolytic stability

Active Publication Date: 2020-12-18
湖南钜亿新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese invention patent CN106221162B discloses a heat-resistant and durable polylactic acid composite material. The shell micropowder is subjected to surface activation treatment, and the sisal fiber is subjected to thermoplastic modification treatment, and then the components are extruded through a twin-screw extruder. out of granulation, the composite material uses natural shell powder and sisal fiber to improve the performance, so that the heat distortion temperature exceeds 100 ° C, and has properties such as hydrolysis resistance and aging resistance, but the compatibility of the components of the polylactic acid composite material is poor , resulting in poor toughness, high brittleness and easy breakage of molded products of modified materials
Chinese invention patent CN107201015B discloses an antibacterial and heat-resistant polylactic acid tableware. In-situ graft surface modification is carried out on inorganic fillers, and melt blending is carried out by one-step method. The grafted crosslinking structure between components of the present invention can significantly increase the inorganic The interfacial binding force between the filler and the organism improves the mechanical properties of the polylactic acid tableware, improves the temperature resistance, and has antibacterial and oxidation resistance, but the crystallization rate of the polylactic acid composite material is slow, the toughness is poor, and There is no greater improvement with the improvement of heat resistance, which will affect the service life, which is not conducive to the widespread promotion in the field of tableware
[0005] To sum up, using some current methods to modify polylactic acid will have problems of low efficiency and durability, and there are no reports and studies on improving the performance of polylactic acid products in terms of easy cleaning. Therefore, as environmental protection With the widespread promotion of tableware, it will become an inevitable trend to develop an easy-to-clean and heat-resistant polylactic acid composite material

Method used

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  • Easy-to-clean high-temperature-resistant polylactic acid composite material for environment-friendly tableware

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] An easy-to-clean high-temperature-resistant polylactic acid composite material used for environmentally friendly tableware is composed of the following raw materials in parts by weight: 35 parts of modified polylactic acid, 65 parts of plant fiber, 1.5 parts of sodium rosinate, 0.3 parts of magnesium aluminum silicate, 25 parts of polyethylene glycol and 3 parts of polyethylene waxes, its preparation method comprises the following steps:

[0032]Add the weighed plant fiber and polyethylene glycol into a high-speed mixer and stir for 5-10 minutes, set the stirring speed at 320-450r / min, raise the temperature to 80-90°C, add and weigh at 80-90°C Sodium rosinate and modified polylactic acid, then stirred for 1-1.5h, after cooling to room temperature, magnesium aluminum silicate and polyethylene wax were added in sequence, after stirring for 10-15min, the evenly stirred mixture was added to the twin-screw extruder Melting and blending in the machine, extrusion, drawing, and...

Embodiment 2

[0037] An easy-to-clean high-temperature-resistant polylactic acid composite material used for environmentally friendly tableware is composed of the following raw materials in parts by weight: 70 parts of modified polylactic acid, 30 parts of plant fiber, 0.8 part of sodium rosinate, 0.1 part of magnesium aluminum silicate, 10 parts of polyethylene glycol, 3 parts of polyethylene wax and 3 parts of N,N,-ethylenebisstearamide, the preparation method is the same as in Example 1, specifically referring to Example 1, the difference is that polyethylene wax (i.e. lubricant) replaced by polyethylene wax and N, N, - ethylene bis stearamide.

[0038] The preparation method of above-mentioned modified polylactic acid comprises the following steps:

[0039] Add 100 parts of polylactic acid to an appropriate amount of tetrahydrofuran solution, stir at 50°C until dissolved, add 2.4 parts of FC-99 and 0.5 parts of TM-200S to the mixed solution at a constant temperature, stir for 2.5-4 hour...

Embodiment 3

[0042] An easy-to-clean high-temperature-resistant polylactic acid composite material used for environmentally friendly tableware is composed of the following raw materials in parts by weight: 45 parts of modified polylactic acid, 55 parts of plant fiber, 1.2 parts of sodium rosinate, 0.2 parts of magnesium aluminum silicate, 20 parts of polyethylene glycol and 4 parts of glycerol trihydroxystearate, its preparation method is the same as in Example 1, specifically with reference to Example 1, the difference is that polyethylene wax (i.e. lubricant) is changed into glycerol trihydroxystearate Fatty acid ester.

[0043] The preparation method of above-mentioned modified polylactic acid comprises the following steps:

[0044] Add 100 parts of polylactic acid to an appropriate amount of tetrahydrofuran solution, stir at 50°C until dissolved, add 3.0 parts of FC-99 and 0.7 parts of TM-200S to the mixed solution at a constant temperature, stir for 2.5-4 hours, and then raise the tem...

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Abstract

The invention discloses an easy-to-clean high-temperature-resistant polylactic acid composite material for environment-friendly tableware, and relates to the technical field of polylactic acid composite materials. The easy-to-clean high-temperature-resistant polylactic acid composite material for environment-friendly tableware is prepared from the following raw materials in parts by weight: 35-70parts of modified polylactic acid, 30-65 parts of plant fiber, 0.8-1.5 parts of sodium abietate, 0.1-0.3 part of magnesium aluminum silicate, 10-25 parts of polyethylene glycol and 3-6 parts of lubricant. The invention further discloses a preparation method of the easy-to-clean high-temperature-resistant polylactic acid composite material for the environment-friendly tableware. The polylactic acidcomposite material is easy to clean and resistant to high temperature, the thermal deformation temperature of the polylactic acid composite material exceeds 120 DEG C, the polylactic acid composite material has excellent mechanical performance, high toughness and low possibility of brittle failure, the service life of the polylactic acid composite material is prolonged, and the composite materialis simple in preparation method, low in cost and completely biodegradable and can be widely applied to the fields of food packaging, environment-friendly tableware and the like.

Description

technical field [0001] The invention belongs to the technical field of polylactic acid composite materials, and in particular relates to an easy-to-clean high-temperature-resistant polylactic acid composite material used for environment-friendly tableware and a preparation method thereof. Background technique [0002] Today, with the theme of environment and sustainable development, environmentally friendly biodegradable polymer materials are undoubtedly favored by people and become a research hotspot in recent years. However, polylactic acid is considered to be one of the most promising alternatives to traditional plastics. Polylactic acid (PLA) is a biodegradable aliphatic polyester prepared by chemical synthesis from lactic acid formed by fermentation of corn or potato starch. The energy consumption in the manufacturing process is lower than that of petroleum-based polymers such as PP, and it is a polymer material with low environmental load. [0003] PLA is a linear pol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08L97/02C08L1/02C08L71/02C08K13/02C08K5/098C08K3/34C08K5/435C08K5/00C08J3/24
CPCC08L97/02C08L1/02C08L67/04C08J3/24C08L2201/08C08L2205/035C08L2205/03C08L2205/16C08L2201/06C08J2367/04C08L71/02C08K13/02C08K5/098C08K3/34C08K5/435C08K5/0091Y02W90/10
Inventor 胡育强胡一帆
Owner 湖南钜亿新材料科技有限公司
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