High temperature resistant polylactic acid melt-blown electret nonwoven filter material and its preparation method and application

A filter material, polylactic acid technology, applied in non-woven fabrics, separation methods, filtration separation, etc., can solve problems affecting performance, cumbersome process, complicated process, etc., achieve good dimensional stability, improve filtration efficiency, and simplify production The effect of the process
CN108708079BActive Publication Date: 2021-07-13上海精发实业有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
上海精发实业有限公司
Publication Date
2021-07-13

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Abstract

The invention provides a high-temperature-resistant polylactic acid melt-blown electret nonwoven filter material and its preparation method and application. Corona electret treatment. The material prepared by the method does not need to add any functional additives, and does not need to be granulated, which simplifies the production process.
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Description

technical field

[0001] The invention relates to a high-temperature-resistant polylactic acid melt-blown electret nonwoven filter material and a preparation method and application thereof. Background technique

[0002] As the government and the public's demand for environmental protection is becoming stronger and stronger, polylactic acid, as a non-toxic, harmless, and completely naturally degradable green environmental protection material, has attracted much attention. The preparation of polylactic acid melt-blown electret non-woven filter material has been reported for a long time. At present, the preparation method in this industry mainly includes the following steps: melt-blown polylactic acid and then corona electret treatment, such as patent CN103061038A After modifying and granulating polylactic acid by adding tourmaline and additives, a high-efficiency and environmentally friendly filter material is made after melt blown and corona electret; patent CN107475892A adds p...

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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