Preparation method of durable hydrophilic polypropylene non-woven fabric

A technology of non-woven fabrics and polypropylene, applied in the field of polypropylene non-woven fabrics, can solve the problems of poor hydrophilicity and durability of non-woven fabrics, and achieve the effects of easy promotion and use, low equipment requirements, and simple operation procedures

Active Publication Date: 2020-06-12
浙江诚品无纺科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The initial hydrophilicity of polypropylene nonwovens treated with surfactants is good, but there is the problem of poor hydrophilic durability of nonwovens after finishing, and the applicable products are also disposable products, such as disposable wet wipes, Disposable wipes, etc.

Method used

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  • Preparation method of durable hydrophilic polypropylene non-woven fabric
  • Preparation method of durable hydrophilic polypropylene non-woven fabric

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Preparation of hydrophilic finishing agent: dopamine hydrochloride, CuSO 4 and H 2 o 2 Dissolve in Tris buffer and stir evenly, then add silica sol with a particle size of 20nm and a solid content of 20%, and adjust the pH of the solution to 8.5 to obtain a hydrophilic finishing agent;

[0024] (2) Wetting pretreatment of nonwovens: Wet polypropylene spunbond nonwovens in absolute ethanol for 1 min and then take them out;

[0025] (3) Hydrophilic finishing of nonwovens: Soak the wetted polypropylene nonwoven fabric in the prepared hydrophilic finishing agent for 3 minutes, take it out, and roll it on a padding machine to control the excess rate of 90%. Then place it in an air-blast oven at 80°C and bake for 20 minutes. After drying, a hydrophilic polypropylene nonwoven fabric is obtained.

[0026] After testing, the water contact angle of the prepared hydrophilic polypropylene nonwoven fabric is 0° (keep for 5s after dripping water and then test); take two 5 × 5c...

Embodiment 2

[0028] (1) Preparation of hydrophilic finishing agent: dopamine hydrochloride, CuSO 4 and H 2 o 2 Dissolve in Tris buffer and stir evenly, then add silica sol with a particle size of 40nm and a solid content of 30%, and adjust the pH of the solution to 8.5 to obtain a hydrophilic finishing agent;

[0029] (2) Wetting pretreatment of nonwovens: Wet polypropylene spunbonded nonwovens in isopropanol for 1 minute and then take them out;

[0030] (3) Hydrophilic finishing of nonwoven fabrics: Soak the wetted polypropylene nonwoven fabric in the prepared hydrophilic finishing agent for 3 minutes, take it out, and roll it on a padding machine to control the excess rate of 95%. Then place it in an air-blast oven at 80°C and bake for 20 minutes. After drying, a hydrophilic polypropylene nonwoven fabric is obtained.

[0031] After testing, the water contact angle of the prepared hydrophilic polypropylene nonwoven fabric is 0° (keep for 5s after dripping water and then test); take two...

Embodiment 3

[0033] (1) Preparation of hydrophilic finishing agent: dopamine hydrochloride, CuSO 4 and H 2 o 2 Dissolve in Tris buffer and stir evenly, then add silica sol with a particle size of 30nm and a solid content of 20%, and adjust the pH of the solution to 8.5 to obtain a hydrophilic finishing agent;

[0034] (2) Wetting pretreatment of nonwovens: Wet polypropylene spunbond nonwovens in 95% industrial ethanol for 1 min and then take them out;

[0035] (3) Hydrophilic finishing of nonwovens: Soak the wetted polypropylene nonwoven fabric in the prepared hydrophilic finishing agent for 3 minutes, take it out and roll it on a padding machine, and control the excess rate to 100%. Then place it in an air-blast oven at 80°C and bake for 20 minutes. After drying, a hydrophilic polypropylene nonwoven fabric is obtained.

[0036] After testing, the water contact angle of the prepared hydrophilic polypropylene nonwoven fabric is 0° (keep for 5s after dripping water and then test); take tw...

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Abstract

The invention discloses a preparation method of durable hydrophilic polypropylene non-woven fabric. The method comprises the following steps of (1) dissolving dopamine hydrochloride, CuSO4 and H2O2 ina Tris buffer solution according to a certain proportion, uniformly stirring, and then adding silicon dioxide sol to obtain a hydrophilic finishing agent; (2) taking out the polypropylene non-woven fabric after the polypropylene non-woven fabric is placed in a wetting agent to be wetted; (3) soaking the wetted polypropylene non-woven fabric in the hydrophilic finishing agent for 3min, taking outthe non-woven fabric, and padding the non-woven fabric on a padder, and then placing in an air blast drying oven at 80 DEG C for baking for 20 min, and drying to obtain the hydrophilic polypropylene non-woven fabric. The polypropylene non-woven fabric obtained by the preparation method disclosed by the invention has excellent hydrophilic effect and good durability, and can be applied to the fieldsof wiping cloth, water filtration and the like.

Description

technical field [0001] The invention belongs to a preparation method of functional textiles, in particular to a preparation method of a durable hydrophilic polypropylene nonwoven fabric. Background technique [0002] Over the past few decades, nonwoven fibers have outpaced woven, knitted and other textile products to become the strongest growing segment of the textile industry. The application of nonwoven products in current life is ubiquitous, such as masks, surgical gowns, packaging bags, diapers, water filters, geotextiles, wallpapers, etc., which have provided us with countless conveniences. Due to its overall performance and cost advantages, polypropylene materials are currently used in the largest amount among nonwoven materials in the world, and are extremely versatile. However, due to the high crystallinity of polypropylene itself, the relatively tight molecular structure and the absence of hydrophilic groups, the nonwoven fabrics composed of it show poor hydrophili...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/37D06M11/56D06M11/50D06M11/79D06M13/144D06M101/20
CPCD06M15/37D06M11/56D06M11/50D06M11/79D06M13/144D06M2101/20D06M2200/11
Inventor 刘国金张向阳赫玉萍裘菲菲
Owner 浙江诚品无纺科技有限公司
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