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Degradable composite material prepreg tape, and preparation method and use thereof

A technology of composite material and prepreg tape, which is applied in the field of composite material prepreg tape and its preparation, can solve the problems of small fiber length and diameter of natural fiber reinforced materials, prone to brittle fracture, limited reinforcement effect, etc., and achieve excellent impact resistance , less environmental hazards, and less reduction in mechanical properties

Active Publication Date: 2014-07-09
SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The natural fiber reinforced materials prepared by these methods have a relatively small fiber length and diameter, and their reinforcing effect is limited, and their impact properties are poor, and they are prone to brittle fracture

Method used

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  • Degradable composite material prepreg tape, and preparation method and use thereof
  • Degradable composite material prepreg tape, and preparation method and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] (1) Preparation of modified PBAT:

[0059] Put 82 parts of PBAT resin, 10 parts of compatibilizer PCL, 3 parts of bis(2,2,6,6-tetramethyl-4-piperidinyl) sebacate as weathering agent, and 5 parts of release agent silicone oil in a mixer Mixed in medium for 7 minutes, fully mixed and then added to a twin-screw extruder to extrude and pelletize. The screw speed is 80r / min, and the extrusion temperature is 115°C to obtain a modified PBAT resin.

[0060] (2) if figure 1 As shown, 120 volumes of jute fibers are drawn from the creel 1, and untwisted through the untwisting machine 3, in a loose and expanded form;

[0061] (3) The jute fiber after the untwisting is drawn out from the arrangement and warping device 4, so that it is evenly distributed;

[0062] (4) The jute fiber enters the pressing roller 5 and the tension control device 6 successively. After these steps, the jute fiber becomes a thin layer with a thickness of 0.5mm;

[0063] (5) The jute fiber is fully contac...

Embodiment 2

[0068] (1) Preparation of modified PBAT:

[0069] Take 88 parts of PBAT resin, 8 parts of PHA, 2 parts of weather resistance agent 2,4-dihydroxy-benzophenone, and 2 parts of mold release agent polyethylene glycol and mix them in a mixer for 4 minutes, and then add them to twin-screw extrusion after fully mixing In the machine, pelletizing was extruded, the screw speed was 75r / min, and the extrusion temperature was 115°C to obtain the modified PBAT resin.

[0070] (2) if figure 1 As shown, 80 rolls of flax fiber are drawn from the creel 1, and untwisted by the untwisting machine 3, showing a loose and expanded form;

[0071] (3) Lead out the untwisted flax fibers from the arrangement and warping device 4 to make them evenly distributed;

[0072] (4) The flax fiber enters the pressing roller 5 and the tension control device 6 successively. After these steps, the flax fiber becomes a thin layer with a thickness of 0.5mm;

[0073] (5) Flax fibers are fully contacted and impregn...

Embodiment 3

[0078] (1) Preparation of modified PBAT:

[0079] Take 90 parts of PBAT resin, 5 parts of compatibilizer PEG, 1 part of weather resistance agent 2-(2'-hydroxy-5'-)benzotriazole, 4 parts of release agent low molecular weight polyethylene, and mix in a mixer for 6 minutes , mixed and added to a twin-screw extruder, extruded and pelletized, the screw speed is 75r / min, and the extruder head temperature is 118°C.

[0080] (2) if figure 1 As shown, 150 rolls of jute fibers are drawn from the creel 1, and untwisted through the untwisting machine 3, in a loose and expanded form;

[0081] (3) The jute fiber after the untwisting is drawn out from the arrangement and warping device 4, so that it is evenly distributed;

[0082] (4) The jute fiber enters the pressing roller 5 and the tension control device 6 successively. After these steps, the jute fiber becomes a thin layer with a thickness of 0.4mm;

[0083] (5) The jute fiber is fully contacted and impregnated with the PBAT resin pa...

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Abstract

The invention belongs to the technical field of polymer modification, and relates to a composite material prepreg tape, and a preparation method and a use thereof. The composite material prepreg is prepared by using natural fibers, and PBAT resin or modified PBAT resin; and 0.20-1.01kg of the PBAT resin or modified PBAT resin is infiltrated on every square meter of the natural fibers. Compared with the prior art, the preparation method has the following advantages: the prepared composite material has an excellent impact resistance and is difficult to break; and the complete impregnation of the resin by the natural fibers can be guaranteed, and few defects and high mechanical strength of the above obtained product can be guaranteed in the product preparation process.

Description

technical field [0001] The invention belongs to the technical field of polymer modification, and relates to a composite material prepreg tape and its preparation method and application. Background technique [0002] The current white pollution has brought huge social and ecological problems to human beings. Among them, non-degradable plastics prepared from polymer compounds such as polystyrene, polypropylene, and polyvinyl chloride are one of the main culprits causing white pollution. The best way to solve this problem is to research and develop new degradable plastics, and use them to replace non-degradable plastics on appropriate occasions. At present, the degradable plastics that have been studied more include polylactic acid (PLA), poly-3-hydroxyalkanoate (PHA), poly-ε-caprolactone (PCL) and polybutylene succinate (PBS). The research on PLA is relatively comprehensive, and the performance research in various aspects is very sufficient. The results show that polylactic ...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L97/02C08L67/04C08L71/08C08K5/1539
Inventor 刘密密
Owner SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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