Polylactic acid/modified polypropylene carbonate/thermoplastic guar gum composite material and preparation method thereof

A polypropylene carbonate and composite material technology, which is applied in the field of polylactic acid/modified polypropylene carbonate/thermoplastic guar gum composite material and its preparation, can solve the problems of high cost, poor impact performance, poor processing performance, etc. problem, to achieve the effect of low cost, good processing rheological properties and mechanical properties, and low price

Active Publication Date: 2017-12-15
广东超远生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, PLA is a linear aliphatic polyester, which has the disadvantages of brittleness, poor impact performance, poor processability and high cost, which greatly limits its application.

Method used

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  • Polylactic acid/modified polypropylene carbonate/thermoplastic guar gum composite material and preparation method thereof
  • Polylactic acid/modified polypropylene carbonate/thermoplastic guar gum composite material and preparation method thereof
  • Polylactic acid/modified polypropylene carbonate/thermoplastic guar gum composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) Preparation of modified nano-zinc oxide: Prepare 600 mL of ethanol / water solution with a volume ratio of 20 / 1, add 20 g of nano-zinc oxide, ultrasonically disperse for 30 min, add 5 mL of KH560, reflux at 80 °C for 180 min, and then cool to room temperature. Washing with ethanol three times, drying in vacuum at 50° C. to obtain modified nanometer zinc oxide.

[0023] (2) Preparation of modified polypropylene carbonate: 300g polypropylene carbonate, 6g modified nano zinc oxide, 3g succinic anhydride and 0.6g epoxy soybean oil were pre-mixed in a high-speed mixer for 15min and then added to the bismuth In a screw extrusion granulator, the modified polypropylene carbonate is obtained by extrusion and granulation after melt blending. The temperature of each section from the feed area to the die of the twin-screw extrusion granulator is: 145°C, 150°C, 155°C, 160°C, 160°C, 158°C, 155°C, the speed of the main engine is 90rpm, and the speed of the feeder is 8.5 rpm.

[00...

Embodiment 2

[0027] (1) The preparation of modified nano zinc oxide is the same as in Example 1.

[0028] (2) Preparation of modified polypropylene carbonate: 250g polypropylene carbonate, 3.8g modified nano-zinc oxide, 7.5g succinic anhydride and 0.6g epoxy soybean oil were pre-mixed in a high-speed mixer for 15min and then added into a twin-screw extrusion granulator, and then extruded and granulated after melt blending to obtain modified polypropylene carbonate. The temperature of each section from the feed area to the die of the twin-screw extrusion granulator is: 148°C, 152°C, 155°C, 160°C, 162°C, 160°C, 158°C, the speed of the main engine is 105rpm, and the speed of the feeder is 9.8rpm.

[0029] (3) Preparation of thermoplastic guar gum: premix 280g guar gum and 150g glycerin under the action of an electric mixer for 3h, after the glycerin fully swells the guar gum, the premixed material is added to the twin-screw extrusion granulator , after being melted and plasticized, extruded...

Embodiment 3

[0032] (1) The preparation of modified nano zinc oxide is the same as in Example 1.

[0033] (2) Preparation of modified polypropylene carbonate: 400g polypropylene carbonate, 20g modified nano-zinc oxide, 15g maleic anhydride and 3g epoxy butyl stearate were premixed in a high-speed mixer for 15min Adding it into a twin-screw extruding granulator, extruding and granulating after melt blending to obtain modified polypropylene carbonate. The temperatures of each section from the feed area to the die of the twin-screw extrusion granulator are: 150°C, 152°C, 158°C, 162°C, 165°C, 168°C, 165°C, the speed of the main engine is 100rpm, and the speed of the feeder is 9.5 rpm.

[0034] (3) Preparation of thermoplastic guar gum: premix 400g guar gum and 180g glycerin under the action of an electric mixer for 3h, after the glycerin fully swells the guar gum, add the premixed material to the twin-screw extruder granulator , after being melted and plasticized, extruded and granulated to ...

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Abstract

The invention provides a polylactic acid/modified polypropylene carbonate/thermoplastic guar gum composite material and a preparation method thereof. The polylactic acid/modified polypropylene carbonate/thermoplastic guar gum composite material comprises the following materials in parts by weight: 100 parts of polylactic acid; 5 to 30 parts of modified polypropylene carbonate; 5 to 25 parts of thermoplastic guar gum; 1 to 5 parts of a plasticizer; 0.1 to 0.5 part of a lubricant. The olylactic acid/modified polypropylene carbonate/thermoplastic guar gum composite material is available in all components, low in cost, nontoxic, green and environmentally friendly, has the characteristics of excellent processing rheological property and mechanical property, low cost and capability of being biodegradable, and is applicable to the manufacture of plastic products, such as disposable tableware, packing materials and films, through various forming technoliges.

Description

technical field [0001] The invention relates to the technical field of environmentally friendly polymer materials, in particular to a polylactic acid / modified polypropylene carbonate / thermoplastic guar gum composite material and a preparation method thereof. Background technique [0002] Polylactic acid (PLA) is a non-toxic, non-irritating, biocompatible biodegradable polymer material, which can be completely degraded into water and carbon dioxide under the action of microorganisms, and will not cause any harm to the environment. In the context of shortage of petroleum resources and rising polyolefin prices year by year, PLA has a tendency to replace traditional polyolefin plastics in the fields of hollow products and films. However, PLA is a linear aliphatic polyester, which has the disadvantages of brittleness, poor impact performance, poor processability and high cost, which greatly limits its application. Contents of the invention [0003] In view of the problems exis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08L69/00C08L5/00C08K13/06C08K9/06C08K3/22
CPCC08K2003/2296C08K2201/011C08L67/04C08L2201/06C08L2205/035C08L69/00C08L5/00C08K13/06C08K9/06C08K3/22
Inventor 张青
Owner 广东超远生物科技有限公司
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