Highly Flexible Biodegradable Nonwovens

A biodegradable and flexible technology, used in plant fibers, non-woven fabrics, textiles and papermaking, etc., can solve the problems of long degradation time and poor flexibility, and achieve the effect of eliminating tingling, improving toughness and facilitating dispersion.

Active Publication Date: 2022-02-15
FUJIAN HENGAN HYGIENE MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it has brittleness, poor flexibility, and long degradation time.

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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The highly flexible biodegradable nonwoven fabric in this embodiment includes: an upper fiber web layer and a lower fiber web layer; wherein, the upper fiber web layer is made of toughened polylactic acid fibers and pure cotton fibers; the lower fiber web layer Layers were made from toughened polylactic acid fibers and coarse denier ES fibers.

[0025] Wherein, the preparation method of the toughened polylactic acid fiber is: adding 15% by weight of hemp nanofibers to the polylactic acid masterbatch. The hemp nanofibers include at least one of hemp cellulose nanowhiskers, hemp cellulose nanofibrils, and hemp microfibrils.

Embodiment 2

[0027] The highly flexible biodegradable nonwoven fabric in this embodiment includes: an upper fiber web layer and a lower fiber web layer; wherein, the upper fiber web layer is made of toughened polylactic acid fibers and pure cotton fibers; the lower fiber web layer Layers were made from toughened polylactic acid fibers and coarse denier ES fibers.

[0028] Wherein, the preparation method of the toughened polylactic acid fiber is: adding 10% by weight of modified hemp nanofibers to the polylactic acid masterbatch. The hemp nanofibers include at least one of hemp cellulose nanowhiskers, hemp cellulose nanofibrils, and hemp microfibrils.

[0029] The modification treatment step of modified hemp nanofiber is:

[0030] 1) Pretreatment, swelling 12-24, centrifuging at 5000rpm, filtering, redissolving in DMF to prepare hemp nanofiber premix,

[0031] 2) Add (triethylamine as a catalyst, silane coupling agent (such as γ-aminopropyltriethoxysilane (KH-550), toughening agent (capro...

Embodiment 3

[0034] The highly flexible biodegradable nonwoven fabric in this embodiment includes: an upper fiber web layer, a middle nanowire layer, and a lower fiber web layer; wherein, the upper fiber web layer is made of toughened polylactic acid fibers and pure cotton fibers; The lower fiber web layer is prepared from toughened polylactic acid fibers and coarse denier ES fibers.

[0035] The preparation method of described intermediate layer is:

[0036] 1) Preparation of ZnO nanowire dispersion

[0037] Add monoalkoxy titanate coupling hydrophilic 1-2 parts of water modifier, after stirring evenly, slowly add 10-30 parts of surface-treated ZnO nanowires to prepare a hydrophilic ZnO nanowire dispersion;

[0038] 2) Preparation of essence self-encapsulated microcapsules

[0039] Add 10-20 parts of essence to the ingredients containing 1-5 parts of C12-15 pareth-12, 1-3 parts of polyvinyl alcohol, 1-3 parts of hydroxymethyl cellulose, sodium carboxymethyl cellulose 0.1-0.5 parts, 0....

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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PUM

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Abstract

The high flexibility biodegradable non-woven fabric of the present invention, described non-woven fabric comprises: upper layer fiber web layer and lower layer fiber web layer; Wherein, upper layer fiber web layer is made of toughened polylactic acid fiber, pure cotton fiber; The described The lower web layer is made of toughened polylactic acid fibers and coarse denier ES fibers. In the non-woven fabric of the present invention, the toughened polylactic acid fiber prepared by adding 5-30% by weight of the modified hemp nanofiber to the polylactic acid masterbatch is used; the surface modification is used as a toughening agent to improve the toughness of the polylactic acid ; At the same time, it destroys the dense hydrogen bonds on the surface of nanocellulose, improves the redispersibility of nanocellulose, and is beneficial to the dispersion of nanofiber fillers in the polylactic acid system; at the same time, the smooth surface and cool feeling treatment can eliminate the contact between hemp fiber and human body tingling sensation.

Description

technical field [0001] The invention relates to a highly flexible biodegradable nonwoven fabric. Background technique [0002] Non-woven non-woven fabrics are fiber mesh fabrics that do not require warp and weft weaving and interweaving, but only require artificial or natural filaments or short fibers to be randomly strutted, laid, and reinforced. Due to its product characteristics, the preparation of nonwovens has the advantages of simple process, high production efficiency, low cost, wide range of uses, and diverse sources, so that it is widely used in clothing linings, medical dressings, industrial filter linings, and thermal insulation packaging. and many other fields. [0003] Due to environmental requirements, the existing non-woven fabrics use a large number of biodegradable natural polymer materials-polylactic acid (PLA) to make non-woven fabrics. Polylactic acid (PLA) is a non-woven fabric that is easier to transform from natural plants. The popularization and app...

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 Patents(China)
IPC IPC(8): D04H1/4382D04H1/4374D01F8/14D01F8/02D06M13/342D06M13/513D06M15/267D06M15/09D06M11/79B32B9/02B32B9/04B32B27/36B32B27/02B32B27/12B32B5/02B32B5/26B32B33/00D06M101/06
CPCD04H1/4382D04H1/4374D01F8/14D01F8/02D06M13/342D06M13/513D06M15/267D06M15/09D06M11/79B32B5/022B32B5/26B32B33/00D06M2101/06B32B2255/02B32B2255/24B32B2255/26B32B2262/0276B32B2262/062
Inventor 王伟翁文伟祝二斌吴晓彪林一速
Owner FUJIAN HENGAN HYGIENE MATERIAL
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