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Biodegradable modified polylactic acid material and preparation method thereof and method for preparing non-woven fabric by same

A polylactic acid material, biodegradable technology, applied in the direction of non-woven fabrics, textiles and papermaking, etc., can solve the problems of difficult prediction of biodegradability, performance requirements, physical and chemical properties, etc., to achieve comprehensive excellent degradation performance, preparation The process is environmentally friendly and the effect of easy implementation

Inactive Publication Date: 2010-12-15
IER BUSINESS DEV CENT +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Although the above-mentioned prospects are very bright and attractive, as of today, biodegradable non-woven fabrics made of polylactic acid resins with good elasticity, flexibility and strength, not easy to break, etc., can be used in many fields. Reports are still rare, let alone its commercialized products and mature processes
The basic difficulty lies in that, to modify the polylactic acid resin to increase its elasticity, flexibility and strength, it is often necessary to introduce some modified materials, but in this way, first of all, the biodegradability of the modified materials itself is difficult to guarantee, and secondly, It is difficult to predict the physical and chemical properties of the products produced by modified materials and polylactic acid resin, and it is also difficult to predict the biodegradability of products produced by modified materials and polylactic acid resin. Whether the products produced by modified materials and polylactic acid resin can achieve multi-purpose The performance requirements of spun fabrics are more unpredictable

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Biodegradable modified polylactic acid material and preparation method thereof and method for preparing non-woven fabric by same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] (1) Ingredients and composition: take by weight 100 parts of polylactic acid resin (produced by Nature Work, model 3051D), polyadipate-terephthalate-butylene glycol ester resin (PBAT) (produced by BASF company, Melting point Tm=110℃, glass transition temperature Tg=-30℃) 20 parts, inorganic filler (talc, 5000 mesh) 5 parts, plasticizer (acetylated tributyl citrate) 5 parts, functional additive stearin 0.5 part of zinc acid.

[0041] (2) Pretreatment of raw materials:

[0042] ①Drying: In a vacuum oven, the drying temperature of PLA and inorganic fillers is 80°C and the drying time is 5 hours, and the drying temperature of PBAT is 60°C and the drying time is 4 hours;

[0043] ②Mixing of raw materials: at room temperature, mix the raw materials prepared according to the pre-determined ratio in a mixer until uniform;

[0044] (3) Twin-screw extrusion granulation:

[0045] ①The twin-screw extruder controls the reactive extrusion according to the following 7-stage tempera...

Embodiment 2

[0051] (1) Ingredients and composition: weigh 100 parts of polylactic acid resin (produced by Nature Work, model 3051D), polyglutaric acid-ethylene terephthalate (PEGT) (produced by Far East Textile Co., Ltd.) by weight , melting point Tm=140℃, glass transition temperature Tg=-27℃) 30 parts, inorganic filler (talc, 5000 mesh) 10 parts, plasticizer (acetylated tributyl citrate) 5 parts, functional additives hard Zinc fatty acid 0.5 part, isocyanate 0.5 part.

[0052] Other steps and process conditions are the same as in Example 1.

[0053] The various test data of the non-woven fabrics of Examples 1 and 2 all meet or exceed the indicators in Table 2.

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Abstract

The invention relates to a biodegradable modified polylactic acid material, prepared by the following raw materials by parts by weight: 100 parts of polylactic acid resin; 10-50 parts of ternary copolyester obtained by polymerization of terephthalic acid, aliphatic hydrocarbon diacid and aliphatic hydrocarbon dihydric alcohol; 5-40 parts of inorganic filler and 1-20 parts of plasticizer. The raw materials are subject to mixing, refining and extrusion pelleting, thus obtaining the modified polylactic acid material. The biodegradable modified polylactic acid material of the invention has the following advantages: the material can be completely biodegraded and is environmentally friendly, and the non-woven fabric prepared by the material has good elasticity, mechanical strength and flexibility and can be popularized and applied in multiple fields.

Description

technical field [0001] The present invention relates to a chemical fiber raw material and its products, more specifically, the present invention relates to a biodegradable chemical fiber raw material, its products and its preparation method. Background technique [0002] Non-woven non-woven fabrics are web-like fabrics that do not require warp and weft weaving and weaving, and only need to pass artificial or natural filaments or short fibers through relatively random arrays, filament laying, and reinforcement. Due to its product characteristics, the preparation of non-woven fabrics has the advantages of simple process, high production efficiency, low cost, wide application and diverse sources, so that it is widely used in clothing linings, medical dressings, industrial filter linings, thermal insulation packaging and many other fields. [0003] However, due to the low cost and wide application of non-woven fabrics, it is difficult to recycle and the return is too low. There...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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IPC IPC(8): C08L67/04C08L67/02C08K13/02B29B9/06D04H1/70D04H1/44D04H1/72
Inventor 卢伟居学成刘勇余汉成翟茂林
Owner IER BUSINESS DEV CENT
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