Water-absorbing melt-blown non-woven fabric and preparation method thereof

A technology of melt-blown non-woven fabric and hydrophilic agent, which is applied in non-woven fabric, rayon manufacturing, textile and paper making, etc. problems, to achieve good reusability, excellent mechanical strength, and improve the effect of water absorption

Active Publication Date: 2020-01-17
JIANGSU YIMAO FILTER MEDIA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The invention patent with the application number CN201910151763.9 discloses a new type of spinning spunlace nonwoven material and its production method. Hydrophilic finishing of non-woven fabrics, the fibers of the prepared non-woven materials are thin and soft, with good water absorption and oil absorption, but the mechanical properties of the non-woven fabrics prepared by this method have not been improved, and due to the spunlace process, the prepared The repeated use performance of non-woven fabrics is not good

Method used

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  • Water-absorbing melt-blown non-woven fabric and preparation method thereof
  • Water-absorbing melt-blown non-woven fabric and preparation method thereof

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preparation example Construction

[0032] A method for preparing a water-absorbent melt-blown non-woven fabric, comprising the steps of:

[0033] S1. Preparation of polymer masterbatch:

[0034] S11, mixing the polypropylene and the hydrophilic agent uniformly according to a predetermined ratio, and then drying to prepare the first polymer blend masterbatch;

[0035] S12, uniformly mixing the surface-modified nano-silica, polyester elastomer and polypropylene according to a predetermined ratio, and drying to prepare the second polymer blend masterbatch;

[0036] S2. Two-component melt spinning: the first polymer blending masterbatch and the second polymer masterbatch are heated and melted through the screw extruder staged temperature control reaction respectively, and are melted by two extruders. The molten polymer is ejected from the spiral nozzle, and after being drawn by high-temperature airflow at high speed, a blended primary fiber with a coiled spiral structure is formed;

[0037] S3. Post-processing: t...

Embodiment 1

[0044] A method for preparing a water-absorbent melt-blown non-woven fabric, comprising the steps of:

[0045] S1. Preparation of polymer masterbatch:

[0046] S11. Mix polypropylene (PP) and hydrophilic agent sulfonated polyethersulfone (SPES) evenly, and then dry them to prepare the first polymer blend masterbatch powder; wherein, the mass percentage of PP and SPES is 98%: 2%; the melt index of the polypropylene is 1100g / 10min, and the melt density is 0.9g / cm 3 ;

[0047] S12. Mix the surface-modified nano-silica particles with dry thermoplastic polyester elastomer (TPEE) and polypropylene (PP) with a high-speed mixer to prepare the second polymer masterbatch powder; wherein, the The melt density of polyester elastomer is 1.2g / cm 3 ; In the second polymer master batch, nano-SiO 2, The mass percentage of TPEE and PP is 1%: 15%: 84%.

[0048] S2. Melt spinning: the first polymer blending masterbatch powder and the second polymer masterbatch powder are heated and melted th...

Embodiment 2-3

[0075] The difference from Example 1 is that the mass percentages of PP and SPES are different, as shown in Table 2, and the other steps are the same as in Example 1, and will not be repeated here.

[0076] Table 2 is the setting of PP and SPES mass percentage in embodiment 1-3

[0077] Example PP:SPES Water absorption speed water absorption Example 1 98％：2％ 11.2s 583.4g / g Example 2 97％：3％ 10.5s 635.7g / g Example 3 96％：4％ 6.3s 683.2g / g

[0078] In the present invention, the hydrophilic agent sulfonated polyether sulfone is added to the fibers of the hydrophobic polymer polypropylene, the hydrophilic groups in the fibers increase, and the water absorption performance of the fibers is significantly improved.

[0079] Since the melting point of SPES is higher than that of polypropylene, the melting temperature of the polymer blend is higher than that of polypropylene. But when the polymer melt temperature is too high, the blend polym...

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Abstract

The invention provides a water-absorbing melt-blown non-woven fabric and a preparation method thereof. The preparation method comprises the following steps: firstly, preparing a first polymer blendingmaster batch composed of polypropylene and a hydrophilic agent and a second polymer blending master batch composed of surface-modified nano silicon dioxide, polyester elastomer and polypropylene, heating and melting by a screw extruder in a sectional temperature control reaction mode, spraying out melt from a spiral nozzle, drafting at high speed through high-temperature air flow, cooling the melt into a net, and collecting the net to obtain the water-absorbing melt-blown non-woven fabric. The fiber structure in the water-absorbing melt-blown non-woven fabric is a side-by-side structure, andthe water-absorbing melt-blown non-woven fabric presents a micro-nano-scale spiral fiber structure, has the characteristics of a three-dimensional crimped fluffy fiber structure, and has excellent water-absorbing performance and mechanical performance.

Description

technical field [0001] The invention relates to the technical field of textile materials, in particular to a water-absorbing melt-blown non-woven fabric and a preparation method thereof. Background technique [0002] The meltblown method is a non-woven fabric processing technology that directly prepares polymers into webs. Its main principle is to use high-speed and high-temperature airflow to gradually solidify the polymer melt into a thin stream of melt to obtain ultra-fine fibers. Meltblown nonwoven materials are mainly used as composite materials, filter materials, thermal insulation materials, sanitary products, oil-absorbing materials and battery separators, etc., and are widely used in fields such as medical and health care, filter materials, environmental protection, and industry. [0003] At present, melt-blown non-woven fabrics mainly use polypropylene as raw material, but because polypropylene has a macromolecular structure, does not contain hydrophilic groups, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/56D04H1/541D01F8/06D01F8/14D01F1/10
CPCD01F1/10D01F8/06D01F8/14D04H1/541D04H1/56
Inventor 吴龙涛王亚飞宋宝祥朴一镛张小宇陈凯
Owner JIANGSU YIMAO FILTER MEDIA CO LTD
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