Sawtooth oak cup/polylactic acid composite material and preparation method thereof

A composite material, polylactic acid technology, which is applied in the field of acorn shell powder/polylactic acid composite materials, can solve the problems of high price, achieve good mechanical properties, and the effect of simple and effective preparation method

Inactive Publication Date: 2012-11-28
INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to its high price, it is difficult to be accepted by the market

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Some examples are provided below to further illustrate the present invention, but the following examples are not intended to limit the scope of the present invention, and those skilled in the art can make some non-essential improvements and adjustments according to the content of the present invention and still belong to the scope of the present invention. .

[0026] In this embodiment, all are parts by mass.

[0027] Example 1

[0028] First configure 9 parts of absolute ethanol, 1 part of water in ethanol aqueous solution, add 2 parts of γ-aminopropyltriethoxysilane coupling agent, stir evenly, let it stand for 10 minutes, and evenly spray it on 98 parts of Quercus acorn husk On the powder, dry at 120°C for 6h. 10 parts of Quercus acorn husk powder, 87 parts of polylactic acid particles, 1 part of graft copolymer particles of maleic anhydride and polylactic acid, 1 part of tributyl phosphite, 1 part of stearic acid Mix evenly, then feed the premixed mixture into a ...

Embodiment 2

[0030] First configure 9 parts of absolute ethanol, 1 part of water ethanol aqueous solution, add 1 part of vinyltrimethoxysilane coupling agent, stir evenly, let stand for 10 minutes, and evenly spray on 99 parts of Lithocarpus acorn husk powder, 120 ℃ drying 6h. Mix 30 parts of Lithocarpus acorn husk powder, 64 parts of polylactic acid particles, 1 part of isocyanate, 5 parts of propyl gallate, and 1 part of sodium stearate after coupling treatment, and then add the premixed mixture to Extrude and granulate in a twin-screw extruder. The temperature settings of the extruder are: feeding section 130°C, feeding preheating section 165°C, mixing section 170°C, plasticizing section 168°C, head extrusion section 165°C ℃, the screw speed is 300rpm, and the acorn shell / polylactic acid composite material particles are obtained. The tensile strength of the composite material is 56.40MPa, the tensile modulus is 247.98MPa, the elongation at break is 16.52%, and the bending strength is 91...

Embodiment 3

[0032] First configure 9 parts of absolute ethanol, 1 part of water ethanol aqueous solution, add 2 parts of tetraisopropyl titanate coupling agent, stir evenly, let it stand for 10 minutes, and evenly spray it on 98 parts of acorn husk powder, 120 ℃ drying 6h. Mix 30 parts of Quaint acorn husk powder, 65 parts of polylactic acid particles, 1 part of 2,6-tert-butylphenol, and 4 parts of stearic acid amide after coupling treatment, and then add the premixed mixture to Extrude and granulate in a single-screw extruder. The temperature settings of the extruder are: feeding and conveying preheating section 160°C, mixing section plasticizing section 170°C, head extrusion section 165°C, screw speed 200rpm, Acorn shell / polylactic acid composite material particles were obtained, the tensile strength of the composite material was 57.22MPa, the tensile modulus was 252.13MPa, the elongation at break was 21.01%, the flexural strength was 91.54MPa, the flexural modulus was 4256.89MPa, and t...

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Abstract

The invention relates to a sawtooth oak cup / polylactic acid composite material and a preparation method thereof. The composite material is prepared from sawtooth oak cup, polylactic acid, plasticizing agents and compatibilizers. The composite material comprises the following ingredients in percentage by weight: 10 to 90 parts of polylactic acid, 20 to 80 parts of sawtooth oak cup, 0 to 20 parts of compatibilizers, 0 to 2 parts of plasticizing agents, 0 to 5 parts of antioxidizers and 0 to 5 parts of lubricating agents. The sawtooth oak cup / polylactic acid composite material can be widely usedfor manufacturing disposable plastic products such as environment protection tableware, trays, fruit trays, package containers, packing object foaming filling materials, electric appliance cases, forestry landscape seedling containers and the like, and belongs to a composite material with the actual application value.

Description

technical field [0001] The invention belongs to the technical field of biodegradable composite materials, in particular to an acorn shell powder / polylactic acid composite material. Background technique [0002] The development of fully biodegradable plastics can alleviate the current environmental pollution problems caused by plastic products, and can make the plastic industry get rid of its dependence on petroleum resources. It is an important way to truly reduce plastic waste, protect ecological balance and open up new plastic raw materials. The development of naturally degradable plastic products to replace commonly used ordinary plastic products has become a hot spot in the 1990s, but the development of degradable plastics was slow due to cost and technical problems. In recent years, with the advancement of raw material production and product processing technology, degradable plastics, especially biodegradable plastics, have received renewed attention and become the high...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/04C08L97/02
Inventor 储富祥李守海王春鹏金立维韩春国莫亚莉
Owner INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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