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A kind of polylactic acid elastic superfine fiber nonwoven material and its preparation method and application

A technology of non-woven materials and ultra-fine fibers, which is applied in non-woven fabrics, cellulose/protein conjugated artificial filaments, fiber treatment, etc., can solve the problem of destroying the biodegradable properties of polylactic acid, high production costs, and complex production processes and other issues, to achieve the effect of enhancing mechanical properties, saving resources, and enriching application fields

Active Publication Date: 2022-05-13
河南驼人医疗器械研究院有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above method can effectively improve the mechanical properties of polylactic acid melt-blown nonwovens, it often destroys the biodegradable properties of polylactic acid, and there will be problems such as complex production process and high production cost.

Method used

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  • A kind of polylactic acid elastic superfine fiber nonwoven material and its preparation method and application
  • A kind of polylactic acid elastic superfine fiber nonwoven material and its preparation method and application
  • A kind of polylactic acid elastic superfine fiber nonwoven material and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] A kind of preparation method of polylactic acid elastic microfiber nonwoven material, its raw material preparation process is as follows figure 1 As shown, the specific preparation steps are as follows:

[0046] (1) Preparation of polyethylene glycol / nanocellulose blend solution:

[0047] First, a certain amount of polyethylene glycol slices with a molecular weight of 6000 was heated in a water bath at 90°C to fully dissolve it into a liquid state; then it was blended with the nanocellulose solution at a ratio of 1:1, and stirred for 2 hours under heating to make it fully mixed; Vacuum suction device, under the condition of heating in a water bath at 100°C, the water vapor is fully evaporated to obtain a polyethylene glycol / nanocellulose blend solution; then the prepared polyethylene glycol / nanocellulose blend solution is sealed at 80°C Stored in a vacuum oven for later use.

[0048] (2) Preparation of polylactic acid / polyethylene glycol / nanocellulose blended raw mate...

Embodiment 2

[0060] A preparation method of polylactic acid elastic superfine fiber nonwoven material, the steps are as follows:

[0061] The preparation method of this example is the same as that of Example 1, the difference is that the ratio of polylactic acid particles to thermoplastic polyurethane elastomer after polyethylene glycol / nanocellulose treatment in step (3) is 6:4, and the obtained The characteristic test results of polylactic acid elastic microfiber nonwoven materials with the ratio of polylactic acid / thermoplastic polyurethane elastomer / polyethylene glycol / nanocellulose at 6:4:1:1 are shown in Table 1.

Embodiment 3

[0063] A preparation method of polylactic acid elastic superfine fiber nonwoven material, the steps are as follows:

[0064] The preparation method of this example is the same as that of Example 1, the difference is that in step (3) the bio-based elastomer is a thermoplastic polyester elastomer, and the polylactic acid particles treated with polyethylene glycol / nanocellulose are mixed with thermoplastic polyester The blending ratio of ester elastomer is 7:3, and the characteristic test results are shown in Table 1.

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Abstract

The invention belongs to the field of melt-blown nonwoven materials, and relates to the preparation of ultrafine fibers, in particular to a polylactic acid elastic ultrafine fiber nonwoven material and its preparation method and application. It includes the following steps: (1) preparation process of polyethylene glycol / nanocellulose blend solution; (2) preparation process of polylactic acid / polyethylene glycol / nanocellulose blending raw material; (3) polylactic acid blending Melt blending molding process of particles and bio-based elastomer; (4) Melt blown molding process of polylactic acid elastic ultrafine fiber web; (5) Multi-stage thermal drawing process of polylactic acid elastic ultrafine fiber nonwoven material; final A polylactic acid elastic superfine fiber nonwoven material having strength, elasticity and biodegradable properties is obtained; the method has the characteristics of green environmental protection, reliable method and low production cost, and has the advantage of large-scale application.

Description

technical field [0001] The invention belongs to the field of melt-blown nonwoven materials, and relates to the preparation of ultrafine fibers, in particular to a polylactic acid elastic ultrafine fiber nonwoven material and its preparation method and application. Background technique [0002] As a fiber aggregate with engineering structural integrity made by physical or chemical methods, nonwovens are a functional fiber material derived from textile molding technology, and have been widely used in medical and health care, filtration and separation, and civil engineering. various fields of construction. As a kind of nonwoven material forming method, meltblown nonwoven forming technology has the characteristics of large specific surface area, dense pores and soft texture, and the prepared ultrafine fiber nonwoven material is better than other ultrafine fiber preparations. The technology has the advantages of low cost, environmental protection and mass production, and is one ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D04H1/56D01F8/14D01F8/16D01F8/02D01D5/30D01D5/12
CPCD04H1/56D01F8/14D01F8/16D01F8/02D01D5/30D01D5/12D10B2331/04D10B2331/00D10B2201/20D10B2401/061D10B2401/12D10B2401/063
Inventor 崔景强张恒甄琪王国锋程杰孙焕惟王富利张一风刘志远张永祥杨亚楠
Owner 河南驼人医疗器械研究院有限公司
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