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Preparation method for anti-ultraviolet-ray anti-yellowing waterproof coating fabric

A waterproof coating and anti-ultraviolet technology, applied in the field of textile processing, can solve the problems of polyurethane materials such as the decline in physical and mechanical properties, anti-ultraviolet, poor weather resistance, low strength, etc., achieve excellent anti-ultraviolet function, keep the appearance beautiful, and prolong the service life Effect

Pending Publication Date: 2020-11-06
YANCHENG INST OF TECH
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when used outdoors for a long time, under the joint action of ultraviolet radiation, heat radiation, oxidative atmosphere, etc., the benzene ring structure in the aromatic polyurethane resin in the fabric coating is easy to absorb ultraviolet rays with a wavelength greater than 340nm, and oxidizes the formazan in the molecule. support, thereby producing a quinone / diquinone-amide structure, which in turn causes yellowing of the coated fabric
At the same time, the polyurethane chain segment will undergo optical Fourier rearrangement and breakage of the urethane bond under the action of ultraviolet light, resulting in a serious decline in the physical and mechanical properties of the polyurethane material.
Therefore, this type of polyurethane coated fabric will not only yellow, but also its water repellency will decrease, its breaking strength and tearing strength will decrease, and its service life will be greatly shortened.
This seriously affects the long-term use of outdoor coated fabrics
[0004] In order to avoid the shortage of aromatic polyurethane fabrics, aliphatic or alicyclic polyurethane can be selected for coating, because it has no benzene ring with conjugation effect, and the urethane bond is relatively stable, and it is not easy to be yellowed by light, but its reactivity is relatively low , the strength is not high, it is not resistant to solvents, and it is not resistant to water pressure, so its use is limited in outdoor waterproof textiles
[0005] In summary, it is still a technical problem to solve the phenomenon of aromatic polyurethane coated fabrics with poor UV protection, weather resistance, and easy yellowing, so that the fabric has superior water repellency and improves its service life.

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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  • Preparation method for anti-ultraviolet-ray anti-yellowing waterproof coating fabric

Examples

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Comparison scheme
Effect test

Embodiment 1

[0028] A preparation method for an anti-ultraviolet and anti-yellowing waterproof coating fabric, comprising the steps of:

[0029] (1) Add the ultraviolet shielding agent into the water, stir evenly, prepare the dispersion liquid of the ultraviolet shielding finishing agent with a mass concentration of 15%, place it in the trough of the padding machine, and process the polyester base cloth with two dipping and two rolling processes at room temperature, and roll The remaining rate is 60%. After baking at 120°C for 20s, calendering treatment is carried out to obtain the treated fabric;

[0030] (2) 0.5 part of organic UV absorber (2-hydroxy-4-n-octyloxybenzophenone), 0.2 part of antioxidant (tetrakis[β-(3,5-di-tert-butyl-4-hydroxy phenyl) propionate] pentaerythritol ester) and 0.2 parts of light stabilizer (polymer of succinic acid and 4-hydroxy-2,2,6,6-tetramethyl-1-piperidinol) added to 31.53 parts of organic After dissolving in the solvent (toluene), add 0.05 parts of UV sh...

Embodiment 2

[0034] A preparation method for an anti-ultraviolet and anti-yellowing waterproof coating fabric, comprising the steps of:

[0035] (1) Add the ultraviolet shielding agent into the water, stir evenly, prepare the dispersion liquid of the ultraviolet shielding finishing agent with a mass concentration of 15%, place it in the trough of the padding machine, and process the polyester base cloth with two dipping and two rolling processes at room temperature, and roll The remaining rate is 70%. Calendering treatment is performed after baking at 135°C for 25s to obtain the treated fabric;

[0036] (2) Mix 1 part of organic UV absorber (2-hydroxy-4-n-octyloxybenzophenone), 0.5 part of antioxidant (tetrakis[β-(3,5-di-tert-butyl-4-hydroxy Phenyl) propionic acid] pentaerythritol ester) and 0.5 parts of light stabilizer (polymer of succinic acid and 4-hydroxy-2,2,6,6-tetramethyl-1-piperidinol) added to 22.9 parts of organic After dissolving in the solvent (butanone), add 0.1 part of UV s...

Embodiment 3

[0040] A preparation method for an anti-ultraviolet and anti-yellowing waterproof coating fabric, comprising the steps of:

[0041] (1) Add the ultraviolet shielding agent into the water, stir evenly, prepare the dispersion liquid of the ultraviolet shielding finishing agent with a mass concentration of 15%, place it in the trough of the padding machine, and process the polyester base cloth with two dipping and two rolling processes at room temperature, and roll The remaining rate is 80%, and calendering treatment is performed after baking at 150°C for 30s to obtain the treated fabric;

[0042](2) 2.5 parts of organic UV absorber (2-(2'-hydroxy-3'-tert-butyl-5'-methylphenyl)-5-chlorobenzotriazole), 1.5 parts of antioxidant (Distearyl thiodipropionate) and 1.5 parts of light stabilizer (bis(2,2,6,6-tetramethyl-4-piperidinyl) sebacate) were added to 11.5 parts of organic solvent After dissolving in (butanone), add 0.8 parts of UV shielding agent, and after mixing, add 82 parts ...

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Abstract

The invention relates to a preparation method for an anti-ultraviolet-ray anti-yellowing waterproof coating fabric. The preparation method comprises the following steps of: firstly, preparing ultraviolet-ray shielding finishing agent dispersion liquid, putting in a padding machine material trough, processing base cloth by a two-dipping two-calendering working procedure, carrying out calendaring processing after baking is carried out to obtain the processed fabric, wherein a calendaring residual rate is 60-80%; and then, adding organic ultraviolet absorbent, antioxidant and light stabilizer into organic solvent, then, adding ultraviolet-ray shielding agent, evenly mixing, then, adding polyurethane and cross-linking agent to obtain coating adhesive, and evenly coating the surface of the processed fabric with the coating adhesive, and baking to obtain the anti-ultraviolet-ray anti-yellowing waterproof coating fabric. By use of the preparation method, through a technology that two after treatment forms, including padding and coating, are combined, an ultraviolet shielding layer-anti-yellowing absorption layer two-layer compound structure is formed on the surface of the fabric, the prepared coating texture has an excellent anti-ultraviolet-ray function, also has an anti-yellowing-ageing function and has an attractive appearance, and the service life of the coating fabric is prolonged.

Description

technical field [0001] The invention relates to a preparation method of a coated fabric, in particular to a preparation method of an anti-ultraviolet, anti-yellowing and waterproof coated fabric, belonging to the technical field of textile processing. Background technique [0002] Due to the rapid development of industry, the ozone layer in the atmosphere has been destroyed, leading to an increase in ultraviolet radiation. Excessive ultraviolet radiation has greatly increased the chances of people suffering from skin diseases and skin cancer. High-performance UV-resistant textiles that avoid excessive UV radiation are increasingly required. For this reason, at present, some domestic coated fabric products already have a certain anti-ultraviolet function, but for the textiles in the outdoor industry, not only must have the effect of anti-ultraviolet, but also need to have the function of preventing rainwater, which usually adopts coating The first layer method is to apply a ...

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): D06N3/14D06N3/00
CPCD06N3/148D06N3/0063D06N3/0088D06N3/0059D06N3/0036D06N3/0034D06N3/0015D06N2209/1678D06N2209/142D06N2209/1692
Inventor 王慧严金龙全桂香
Owner YANCHENG INST OF TECH
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