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Process for preparing thermal resistant easy processed polylactic resin

A polylactic acid resin, an easy-to-process technology, applied in the field of preparation of heat-resistant and easy-to-process polylactic acid resin, can solve the problems of difficult processing, low melt rate, and low crystallinity of polylactic acid resin

Inactive Publication Date: 2006-06-28
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that the crystallinity of the polylactic acid resin itself is low, mainly based on the amorphous structure.
It can improve the heat resistance of the resin, but the melt rate is low and the processing is difficult

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0010] Example 1: 80 parts of polylactic acid

[0011] 20 parts of styrene-acrylonitrile copolymer

[0012] ky-7910 and B215 0.5 parts

[0013] The raw materials were blended, extruded on a Φ30 twin-screw extruder at 185°C, and injected on a 200g injection molding machine. The measured Vicat softening temperature is 62.3°C; melt flow rate is 2.35g / 10min; tensile strength is 45.1Mpa; Izod impact strength is 40.0J / m.

example 2

[0014] Example 2: 70 parts of polylactic acid

[0015] 30 parts of styrene-acrylonitrile copolymer

[0016] ky-7910 and B215 0.5 parts

[0017] The raw materials are blended, extruded on a Φ30 twin-screw extruder at 160°C, and injected on a 200g injection molding machine. The measured Vicat softening temperature is 79.3°C; melt flow rate is 3.09g / 10min; tensile strength is 43.2Mpa; Izod impact strength is 37.5J / m.

example 3

[0018] Example 3: 60 parts of polylactic acid

[0019] Polycarbonate 40 parts

[0020] Polycaprolactone 20 parts

[0021] ky-7910 and B215 0.5 parts

[0022] The experimental operation is the same as that of Example 1, the Vicat softening temperature is 117.1°C; the melt flow rate is 7.60g / 10min; the tensile strength is 39.2Mpa; the Izod impact strength is 35.5J / m.

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Abstract

The invention belongs to a manufacturer method for thermal resistant easy to machined poly lactic acid resin that is made up from poly lactic acid, thermal resistant material, high molten mass speed polymers material aliphatic polyester and antioxidant. The process includes mixing in blending machine, and extruding at 160-185 degree centigrade. The resin could be used to make film, panel, sheet material, sparkle, and plastic components. The products have excellent thermal resistance capability, mechanical property and machine property.

Description

Technical field: [0001] The invention belongs to a preparation method of heat-resistant and easy-processing polylactic acid resin. Background technique: [0002] The initial raw material for the synthesis of polylactic acid is starch, which is converted into lactic acid through a biological fermentation process, and polylactic acid is obtained from lactic acid through polycondensation or ring-opening polymerization of lactide. It can be seen that one of the essences of polylactic acid different from other general-purpose plastics is that it utilizes renewable plant resources. This can effectively alleviate the increasingly depleted oil resources. Moreover, polylactic acid has exactly the same properties as general-purpose plastics, such as mechanical properties and processability. In particular, the current large-scale production has reduced the cost of polylactic acid resin, making it very cheap compared to other biodegradable polymer materials. Therefore, in recent year...

Claims

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Application Information

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IPC IPC(8): C08L67/04C08L25/12C08L69/00
Inventor 刘南安韩常玉董丽松
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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