Palm leaf sheath fiber powder modified polyadipic acid/butylene terephthalate composite material and preparation method thereof

A technology of butylene terephthalate and palm leaf sheath, which is applied in the field of polymer composite materials, can solve the problems of high cost and insufficient tensile strength, and achieve the effects of reducing interface resistance, shortening the degradation cycle and improving compatibility

Inactive Publication Date: 2019-04-23
SHANGHAI DONGSHENG NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a single polybutylene adipate / terephthalate has disadvantages such as insufficient tensile strength and high cost, so modification is needed to improve its mechanical properties and reduce costs

Method used

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  • Palm leaf sheath fiber powder modified polyadipic acid/butylene terephthalate composite material and preparation method thereof
  • Palm leaf sheath fiber powder modified polyadipic acid/butylene terephthalate composite material and preparation method thereof
  • Palm leaf sheath fiber powder modified polyadipic acid/butylene terephthalate composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A modified polyadipate / butylene terephthalate composite material containing palm leaf sheath fiber powder and a preparation method thereof, calculated in parts by mass, its composition and content are as follows:

[0031]

[0032] Above-mentioned formula reacts according to the following steps:

[0033] (1) Place the dried palm leaf sheaths in a grinder and pulverize them into small pieces, then use a ball mill to grind them into powder, pass through a 100-mesh sieve to obtain powdery palm leaf sheaths, and then place them in a vacuum oven at 80°C for drying;

[0034] (2) Immerse the powdered palm leaf sheath in lye with a mass concentration of 4% (mixing ratio of solid to liquid mass: 1:20), treat it at 25°C for 2 hours, wash out the alkali with water, remove the alkali in an acid bath, and wash with water until neutral , after drying, palm leaf sheath fiber powder is obtained for subsequent use;

[0035] (3) the above-mentioned palm leaf sheath fiber powder is pla...

Embodiment 2

[0039] A modified polyadipate / butylene terephthalate composite material containing palm leaf sheath fiber powder and a preparation method thereof, calculated in parts by mass, its composition and content are as follows:

[0040]

[0041] Above-mentioned formula reacts according to the following steps:

[0042] (1) Place the dried palm leaf sheaths in a grinder and pulverize them into small pieces, then use a ball mill to grind them into powder, pass through a 100-mesh sieve to obtain powdery palm leaf sheaths, and then place them in a vacuum oven at 80°C for drying;

[0043] (2) Immerse the powdery palm leaf sheath in lye with a mass concentration of 3% (mixing ratio of solid to liquid mass: 1:20), treat it at 25°C for 3 hours, wash it with water to remove the alkali, acid bath, and wash to neutrality , after drying, palm leaf sheath fiber powder is obtained for subsequent use;

[0044] (3) the above-mentioned palm leaf sheath fiber powder is placed in a high-speed blender...

Embodiment 3

[0048] A modified polyadipate / butylene terephthalate composite material containing palm leaf sheath fiber powder and a preparation method thereof, calculated in parts by mass, its composition and content are as follows:

[0049]

[0050] Above-mentioned formula reacts according to the following steps:

[0051] (1) Place the dried palm leaf sheaths in a grinder and pulverize them into small pieces, then use a ball mill to grind them into powder, pass through a 100-mesh sieve to obtain powdery palm leaf sheaths, and then place them in a vacuum oven at 80°C for drying;

[0052] (2) Immerse the powdery palm leaf sheath in lye with a mass concentration of 2.5% (mixing ratio of solid to liquid mass: 1:20), treat it at 25°C for 3 hours, wash out the alkali with water, remove the alkali in an acid bath, and wash with water until neutral , after drying, palm leaf sheath fiber powder is obtained for subsequent use;

[0053](3) the above-mentioned palm leaf sheath fiber powder is pla...

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Abstract

The invention discloses a palm leaf sheath fiber powder modified polyadipic acid/butylene terephthalate composite material, which comprises, by mass, 100 parts of polyadipic acid/butylene terephthalate, and 1-20 parts of palm leaf sheath fiber powder, wherein the components are subjected to high-speed blending and extrusion granulation. According to the present invention, the alkali modification is performed after the palm leaf sheath fiber is crushed and grinded so as to effectively reduce the interface resistance, improve the compatibility with the matrix material and meet the modification requirements of polyadipic acid/butylene terephthalate; and by introducing the photosensitizer, the degradation cycle of the disposable article based on the composite material can be effectively shortened.

Description

technical field [0001] The invention relates to the field of fully biodegradable polymer composite materials, in particular to a palm leaf sheath fiber powder modified polyadipate / butylene terephthalate composite material and a preparation method thereof. Background technique [0002] Poly(butylene adipate / terephthalate) has excellent processing properties and has broad application prospects in industry, agriculture, household, packaging and other fields. However, single polybutylene adipate / terephthalate has disadvantages such as insufficient tensile strength and high cost, so modification is needed to improve its mechanical properties and reduce costs. [0003] There are about 2,500 species of palms in the world, and they are mainly produced in tropical regions. Among them, palms are palms, which are native to China and have a long history of planting. They are mainly distributed in provinces and regions south of the Yangtze River. It is not only an excellent ornamental t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L97/02C08K5/098C08K5/09C08K5/39
CPCC08L67/02C08L2201/06C08L2205/03C08L97/02C08L91/00C08K5/098C08K5/09C08K5/39
Inventor 施晓旦杨刚金霞朝
Owner SHANGHAI DONGSHENG NEW MATERIALS
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