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PBAT melt-blowing degradable non-woven fabric and manufacturing method thereof

A non-woven fabric and melt-blown technology, which is applied in the direction of melt spinning, non-woven fabrics, textiles and papermaking, etc., can solve the problem that the performance is difficult to meet the requirements of practical applications, the performance stability needs to be further improved, and the structure of non-woven fabric materials is not enough Uniformity and other issues, to achieve continuous and stable soft hand feeling, conducive to environmental protection, avoid or alleviate the effect of thermal degradation

Inactive Publication Date: 2016-05-18
六安载丰新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Chinese patent 201110238669.0 discloses a polylactic acid / polyε-caprolactone biodegradable composite ultra-fine fiber nonwoven fabric and its preparation method. PLA and PCL are used to electrospun each other into fibers and then entangled and woven to prepare composite ultra-fine fibers. non-woven fabric, but the structure of the non-woven material obtained by this method is not uniform enough, and the performance stability needs to be further improved
Chinese patent 201010250346.9 relates to a biodegradable modified polylactic acid material and its preparation method as well as a method for preparing non-woven fabrics. Polylactic acid, terephthalic acid, aliphatic dibasic acid and aliphatic dibasic alcohol are polymerized into three Non-woven fabrics are prepared by mixing and refining, extruding granulation, and spun-bonding with meta-copolyester, non-polar fillers, and plasticizers; this process is complicated and needs to be further optimized
However, in most cases, the performance of a single material is often difficult to meet the requirements of practical applications.

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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  • PBAT melt-blowing degradable non-woven fabric and manufacturing method thereof
  • PBAT melt-blowing degradable non-woven fabric and manufacturing method thereof
  • PBAT melt-blowing degradable non-woven fabric and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Vacuum-dry PBAT, PLA and PCL particles at 60°C for 48 hours, and the moisture content after drying is less than 100ppm;

[0034] (2) Blend 100 parts of PBAT, 10 parts of PLA, and 5 parts of polycaprolactone (PCL) after drying for 3 minutes, heat through a screw extruder, melt at 200 ° C, and extrude into a melt. When the spinneret hole of the die head is extruded, the PBAT polyester melt is stretched into ultra-fine fibers by the high-pressure hot air flow with a flow rate of 50m / sec and a temperature of 210°C on both sides of the spinneret hole, and is condensed on the nozzle from the nozzle. On the drum-type receiver with a distance of 5cm, the drum speed of the receiver is 15r / min, and it is self-bonded into a non-woven fabric. After cooling, the non-woven fabric is removed from the drum with a blade and placed in a drying oven to dry and shape. 70°C, setting time 5h, to obtain PBAT melt-blown biodegradable non-woven fabric.

Embodiment 2

[0036] (1) Air-dry PBAT, PLA and PCL particles at 75°C for 40 hours, and the moisture content after drying is less than 100ppm;

[0037] (2) After drying, 100 parts of PBAT, 20 parts of PLA, 10 parts of polycaprolactone (PCL), and 5 parts of compatibilizer (AX8900) were blended for 5 minutes, heated by a screw extruder, and the melting temperature was 220°C , Extruded into a melt, when the melt is extruded from the spinneret hole of the die, it is blown by a high-pressure hot air flow with a flow rate of 100m / sec and a temperature of 250°C on both sides of the spinneret hole, and the PBAT polyester melt is Stretched into ultra-fine fibers, condensed on the drum receiver with a distance of 15cm from the nozzle, the drum speed of the receiver is 20r / min, self-adhesive into non-woven fabric, after cooling, use a blade to remove the non-woven fabric from the drum Put it into a drying oven to dry and set the shape, the setting temperature is 80°C, and the setting time is 15 hours t...

Embodiment 3

[0039] (1) Vacuum-dry PBAT, PLA and PCL particles at 90°C for 30 hours, and the moisture content after drying is less than 100ppm;

[0040](2) After drying, 100 parts of PBAT, 40 parts of PLA, 25 parts of polycaprolactone (PCL), and 10 parts of compatibilizer (GMA) were blended for 8 minutes, heated by a screw extruder, and the melting temperature was 270°C , Extruded into a melt, when the melt is extruded from the spinneret hole of the die head, it is blown by a high-pressure hot air flow with a flow rate of 150m / sec and a temperature of 230°C on both sides of the spinneret hole, and the PBAT polyester melt is Stretched into ultra-fine fibers, condensed on the roller receiver with a distance of 20cm from the nozzle, the roller speed of the receiver is 30r / min, self-adhesive into non-woven fabric, after cooling, use a blade to remove the non-woven fabric from the roller Put it into a drying oven to dry and set the shape, the setting temperature is 90 ° C, and the setting time ...

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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Abstract

The invention relates to a PBAT melt-blowing degradable non-woven fabric and a manufacturing method thereof. The manufacturing method comprises: blending 100 parts of dried PBAT, 10-50 parts of dried polylactic acid, 5-30 parts of dried polycaprolactone, and 0-10 parts of compatilizer for 3-10 min, through a screw extruder, heating, melting, and extruding the above to form a melt, when the melt is extruded from the spinneret orifice of a die head, the melt being blown by high-pressure hot airflow on two sides of the spinneret orifice, and being stretched to superfine fibers and coagulating on a drum-type receiver which is a certain distance away from the nozzle, the superfine fibers bonding to form a non-woven fabric, after being cooled, taking the non-woven fabric down from the drum and putting the non-woven fabric in a drying oven to dry and shape, to obtain the PBAT melt-blowing degradable non-woven fabric. Compared with the prior art, the method is simple in device, short in process flow, and low in energy consumption. Using the melt-blowing method to manufacture the non-woven fabric, fibers of the non-woven fabric are thin in diameter, and the non-woven fabric is characterized by large specific surface area, high porosity, and excellent filter efficiency.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and relates to a PBAT melt-blown degradable non-woven fabric and a preparation method thereof. Background technique [0002] Non-woven fabrics, also known as non-woven fabrics, are composed of oriented or random fibers, and have the characteristics of moisture-proof, breathable, flexible, light weight, easy to decompose, non-toxic, and non-irritating. Cloth is a new promising new technology, which has the advantages of advanced technology, short process and low cost. Especially in recent years, with the rapid development of industry and the strengthening of environmental protection, the market demand for melt-blown non-woven fabrics getting bigger. [0003] Polybutylene adipate / terephthalate (PBAT) is a ternary copolyester polymerized from terephthalic acid, adipic acid and 1,4-butanediol. It has been studied at home and abroad in recent years. A new type of biodegradable material. P...

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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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/4382D01D5/08D06C7/02
Inventor 严莉莉
Owner 六安载丰新材料有限公司
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