Title:
METHOD FOR PREPARING FLAME-RETARDANT COLORED FUNCTIONAL ENVIRONMENTALLY FRIENDLY FIBERS
Document Type and Number:
WIPO Patent Application WO/2022/099979
Kind Code:
A1
Abstract:
A method for preparing flame-retardant colored functional environmentally friendly fibers. The method comprises the following steps: step 1. uniformly mixing a polylactic acid powder, an environmentally friendly pigment, a flame retardant, and nano calcium carbonate, drying the mixture, and carrying out extrusion granulation by means of a screw extruder to obtain a stock solution colored flame-retardant polylactic acid master batch; and step 2. subjecting the stock solution colored flame-retardant polylactic acid master batch and polylactic acid slices to spinning and drawing to obtain stock solution colored flame-retardant polylactic acid fibers. The problem of existing flame-retardant polyester fibers having a poor flame-retardant effect is solved, and by intrusively mixing the flame retardant by means of the melt granulation of the polylactic acid powder, the flame-retardant properties of the polylactic acid powder are improved, and the overall performance is thus improved.
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Inventors:
ZHU GUOYING (CN)
ZHANG JINGDONG (CN)
ZHANG JINGDONG (CN)
Application Number:
PCT/CN2021/084434
Publication Date:
May 19, 2022
Filing Date:
March 31, 2021
Export Citation:
Assignee:
ZHEJIANG HUILONG NEW MAT CO LTD (CN)
International Classes:
D01F6/92; D01D5/12; D01F1/04; D01F1/07; D01F1/10
Domestic Patent References:
| WO2017066975A1 | 2017-04-27 | |||
| WO2015164447A2 | 2015-10-29 | |||
| WO2017055339A1 | 2017-04-06 |
Foreign References:
| CN108166096A | 2018-06-15 | |||
| CN102241878A | 2011-11-16 | |||
| CN103665800A | 2014-03-26 | |||
| CN112553707A | 2021-03-26 |
Attorney, Agent or Firm:
HANGZHOU FENGHE PATENT ATTORNEYS OFFICE CO., LTD. (CN)
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