Environmentally-friendly durable water repellent fabric and processing method thereof

A processing method and environmentally friendly technology, which can be used in chemical instruments and methods, textiles and papermaking, synthetic resin layered products, etc., and can solve problems such as ecological environment threats and difficult biodegradation.

Inactive Publication Date: 2010-12-22
TORAY FIBER RES INST(CHINA) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, according to research, when fluorine-containing compounds are subjected to biological, thermal, oxidative, hydrolysis and photodegradation conditions, fluorine-containing compounds will eventually be degraded into compounds containing perfluorooctyl, such as PFOA (perfluorooctanoic acid and its salts), PFOS (perfluorooctyl Octane sulfonic acid and salts) and their precursor substances may tend to bioaccumulate in organisms, have certain biological toxicity, are difficult to be biodegraded in the environment, and have potential threats to the ecological environment. See US Patent 5,688,884 (Baker et al.)

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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  • Environmentally-friendly durable water repellent fabric and processing method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] First, the PET100% fabric is subjected to the pretreatment of the padding process (I), then the padding process (II) is performed again, and finally the product is obtained by drying and setting. Its surface has a water-repellent layer containing polyurethane dendritic macromolecular structural units and melamine structural units.

[0032] The processing fluid components and parts by weight of the above-mentioned padding processing (I) and padding processing (II) are as follows:

[0033] Polyurethane dendrimer water-repellent resin 4 parts

[0034] Melamine bridging agent 1 part

[0035] Organic amine salt catalyst 1 part

[0036] 94 parts of water

[0037] The padding processing (I) is two dipping and two rolling, its drying temperature is 40°C, and the drying time is 2min; the padding processing (II) is two dipping and two rolling, its drying temperature is 130°C, drying time is 2min, and the setting temperature is 170°C , Setting time 0.75min.

Embodiment 2

[0039] The processing liquid component and parts by weight of padding processing (II) are as follows:

[0040] Polyurethane dendrimer water-repellent resin 4 parts

[0041] Aliphatic unblocked isocyanate bridging agent 1 part

[0042] 95 parts of water

[0043] All the other are with embodiment 1. The surface of the obtained product has a water-repellent layer containing polyurethane dendritic macromolecular structural units and isocyanate structural units.

Embodiment 3

[0045] The processing liquid component and parts by weight of padding processing (II) are as follows:

[0046] Aliphatic paraffin water-repellent resin 4 parts

[0047] Blocked isocyanate bridging agent 1 part

[0048] 95 parts of water

[0049] All the other are with embodiment 1. The surface of the obtained product has a water-repellent layer containing aliphatic paraffin wax structural units and isocyanate structural units.

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Abstract

The invention discloses an environmentally-friendly durable water repellent fabric and a processing method thereof. A water repellent layer contains at least one of a polyurethane treelike macromolecular structure unit and an aliphatic paraffin structure. The fabric has the advantages of high water repellency, air permeability, washability, abrasion resistance, no use of fluoride-containing waterrepellent, no edge substances such as perfluorooctanoic acid (PFOA) and perfluorooctane sulfonates (PFOS) and precursor substances thereof, no biological accumulation and no production of fluoride-containing gas and belongs to a high-performance environmentally-friendly water repellent fabric.

Description

technical field [0001] The invention relates to an environment-friendly durable water-repellent fabric, in particular to the water-repellent fabric processed by using one or two kinds of water-repellent resins among polyurethane tree-shaped macromolecular water-repellent agent and aliphatic paraffin water-repellent agent. Background technique [0002] With the development of society and the progress of mankind, people's demand for multifunctional textiles is increasing. Among them, products with water-repellent function are more and more popular among consumers, especially high-end clothing, outdoor clothing, sportswear, casual clothing and clothing for medical staff. [0003] At present, in terms of water-repellent finishing of textiles, there are generally two methods for preparing water-repellent surfaces: one is to modify the solid surface; the other is to construct microstructures on the surface. Water repellents such as paraffin, pyridinium quaternary ammonium salts, ...

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): D06N3/00D06N3/14B32B27/12B32B27/40
Inventor 王小燕沈晓成何彩霞
Owner TORAY FIBER RES INST(CHINA) CO LTD
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