Manganese oxide-cellulose modified polylactic acid composite material and preparation method thereof

A technology of composite materials and polylactic acid, which is applied in the field of manganese oxide-cellulose modified polylactic acid composite materials and its preparation, can solve the problems of poor impact resistance, high brittleness of polylactic acid materials, unfavorable use range, etc., and achieve impact resistance Good, good toughness effect

Inactive Publication Date: 2016-03-23
SUZHOU FAST INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the high brittleness and poor impact resistance of polylactic acid materials are not conducive to expanding its application range.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A preparation method of manganese oxide-cellulose modified polylactic acid composite material, comprising the following steps:

[0019] (1) Weigh the raw materials according to parts by weight: 40 parts of polylactic acid, 7 parts of manganese oxide, 8 parts of sodium carboxymethyl cellulose, 6 parts of gypsum whiskers, 4 parts of nano attapulgite, 3 parts of polyethylene glycol, 5 parts of vinylbenzene, 3 parts of vermiculite powder, 1 part of γ-aminopropyltriethoxysilane, 3 parts of polypropylene wax; dry the weighed polylactic acid at 90°C for 5 hours;

[0020] (2) Add the dried polylactic acid and the remaining raw materials except manganese oxide and gypsum whiskers to the high-speed mixer and mix them evenly; put them into the co-rotating twin-screw extruder, undergo melting reaction, and then sequentially Add manganese oxide and gypsum whiskers and extrude to granulate. The temperature of each zone in the co-rotating screw extruder is as follows: the first zone i...

Embodiment 2

[0024] A preparation method of manganese oxide-cellulose modified polylactic acid composite material, comprising the following steps:

[0025] (1) Weigh each raw material according to parts by weight: 80 parts of polylactic acid, 15 parts of manganese oxide, 18 parts of sodium carboxymethyl cellulose, 12 parts of gypsum whiskers, 11 parts of nano attapulgite, 10 parts of polyethylene glycol, 14 parts of vinylbenzene, 9 parts of vermiculite powder, 5 parts of γ-aminopropyltriethoxysilane, 8 parts of polypropylene wax; dry the weighed polylactic acid at 90°C for 8 hours;

[0026] (2) Add the dried polylactic acid and the remaining raw materials except manganese oxide and gypsum whiskers to the high-speed mixer and mix them evenly; put them into the co-rotating twin-screw extruder, undergo melting reaction, and then sequentially Add manganese oxide and gypsum whiskers, extrude and granulate. The temperature of each zone in the co-rotating screw extruder is as follows: the first z...

Embodiment 3

[0030] A preparation method of manganese oxide-cellulose modified polylactic acid composite material, comprising the following steps:

[0031] (1) Weigh the raw materials according to parts by weight: 60 parts of polylactic acid, 11 parts of manganese oxide, 13 parts of sodium carboxymethyl cellulose, 9 parts of gypsum whiskers, 7 parts of nano attapulgite, 6 parts of polyethylene glycol, 9 parts of vinylbenzene, 6 parts of vermiculite powder, 3 parts of γ-aminopropyltriethoxysilane, 5 parts of polypropylene wax; dry the weighed polylactic acid at 90°C for 6 hours;

[0032] (2) Add the dried polylactic acid and the remaining raw materials except manganese oxide and gypsum whiskers to the high-speed mixer and mix them evenly; put them into the co-rotating twin-screw extruder, undergo melting reaction, and then sequentially Add manganese oxide and gypsum whiskers, extrude and granulate. The temperature of each zone in the co-rotating screw extruder is as follows: the first zone ...

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Abstract

The invention discloses a manganese oxide-cellulose modified polylactic acid composite material and a preparation method thereof. The polylactic acid composite material is prepared from, by weight, 40-80 parts of polylactic acid, 7-15 parts of manganese oxide, 8-18 parts of sodium carboxymethylcellulose, 6-12 parts of gypsum whiskers, 4-11 parts of nanometer attapulgite, 3-10 parts of polyethylene glycol, 5-14 parts of divinyl benzene, 3-9 parts of vermiculite powder, 1-5 parts of gamma-amino propyl triethoxysilane and 3-8 parts of polypropylene wax. It is proved through tests that the tensile strength of the polylactic acid composite material prepared through the preparation method ranges from 55.4 MPa to 58.7 MPa, the elongation at break ranges from 13.6% to 15.8%, and the notch impact strength ranges from 9.6 kJ/m<2> to 11.4 kJ/m<2>.

Description

technical field [0001] The invention belongs to the field of composite materials, and in particular relates to a manganese oxide-cellulose modified polylactic acid composite material and a preparation method thereof. Background technique [0002] Polylactic acid has good thermal stability, the processing temperature is 150~230°C, and it has good solvent resistance. It can be processed in various ways, such as extrusion, spinning, biaxial stretching, and injection blow molding. In addition to being biodegradable, products made of polylactic acid have good biocompatibility, gloss, transparency, feel and heat resistance, and also have certain bacteria resistance, flame retardancy and UV resistance, so they are very useful. Extensive, can be used as packaging materials, fibers and non-wovens, etc. However, the high brittleness and poor impact resistance of polylactic acid materials are not conducive to expanding its application range. For this reason, polylactic acid materials...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08L1/28C08L71/02C08L23/12C08K13/04C08K3/34C08K5/544C08K7/08C08K3/22B29C47/92B29C45/76B29B9/06B29C48/92
CPCC08L67/04B29B9/06B29C45/76B29C48/92B29C2945/76735B29C2948/9259B29C2948/92704C08K2201/003C08K2201/011C08K2201/014C08K2201/016C08L2205/025C08L2205/035C08L1/286C08L71/02C08L23/12C08K13/04C08K3/346C08K5/544C08K7/08C08K2003/2262
Inventor 彭孝茹
Owner SUZHOU FAST INFORMATION TECH CO LTD
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