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Completely-degradable composite material with high toughness

A composite material, completely degradable technology, applied in the field of PBS/PBAT/starch degradable composite materials, can solve the problem of fast degradation rate, and achieve the effect of increasing melt flow index, high toughness, and easier processing and molding

Inactive Publication Date: 2013-01-30
大河宝利材料科技(苏州)有限公司
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0005] It can be seen that the current PBS, PBAT and their composite materials are difficult to meet the conditions of high material toughness, fast degradation rate, excellent processing performance, and low cost at the same time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] The present invention will be further described through specific examples below, but the examples are only used to explain the present invention, not to limit the present invention.

[0018] Embodiments of the present invention adopt following preparation method:

[0019] According to parts by weight, first blend the PBS / PBAT base material in the Haake internal mixer for 5 minutes, and set the temperature to 135° C., then blend starch, plasticizer and water for starch gelatinization, and gelatinize the gelatinized Starch was added in the internal mixer and blended for 5min, and the temperature was set at 135°C. The blended material was hot-pressed at 150°C for 5 minutes in a vulcanizer, and then cold-pressed at room temperature for 5 minutes to obtain a blended composite material.

[0020] Gained composite material of the present invention adopts following method or standard to carry out performance test, and all sample strips all need to be at temperature 23 ℃...

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PUM

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Abstract

The invention discloses a completely-degradable composite material with high toughness, which comprises the following components in percentage by weight: 5 to 94% of PBS or / and PBAT, 5 to 70% of starch, and 0.5 to 60% of plasticize. The use of the starch as a component of the starch reduces production cost and speeds up the degradation of the composite material; and the system of the composite material can increase the melt flow index of the PBAT, so the composite material is easy to process and form. The high toughness of the composite material allows the composite material to be formed into films by casting and blowing or plastic products by blowing, extruding and injecting.

Description

technical field [0001] The invention belongs to the technical field of fully degradable polymer composite material processing, and in particular relates to a high-toughness PBS / PBAT / starch fully degradable composite material. Background technique [0002] Poly(butylene succinate), PBS, as a thermoplastic aliphatic polyester with biodegradability, has good mechanical properties, thermal and chemical stability, and biodegradability, although PBS is relatively Compared with other biodegradable materials, it has relatively high melting point, good heat resistance, and excellent mechanical strength. However, compared with traditional polymer materials that have been widely used, PBS still has defects such as high brittleness and low melting point. . [0003] Poly(butylene adipate-co-butylene terephthalate), PBAT is a copolymer of butylene adipate and butylene terephthalate, with both PBA With the characteristics of PBT, it has not only good ductility and elongation at break, bu...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L3/02C08L3/08C08L3/10C08L3/06C08K5/053C08K5/06C08K5/103C08K5/21C08K5/17
Inventor 管丽敏罗煜张怀忠李宝江
Owner 大河宝利材料科技(苏州)有限公司
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