Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Hollow heat storage and heat preservation polylactic acid fiber and preparation method thereof

A technology of polylactic acid fiber and L-polylactic acid, which is applied in the field of hollow thermal storage polylactic acid fiber and its preparation, can solve problems such as infeasibility, damaged capsules, and wear of spinneret micropores, so as to avoid complicated procedures and solve Abrasion problem, good fluffiness effect

Pending Publication Date: 2021-04-13
SHANGHAI DEFULUN CHEM FIBER
View PDF7 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, fiber modification by adding phase-change capsule material can theoretically endow the fiber with heat storage and heat preservation function. Due to poor performance and other reasons, it is not feasible to modify fibers by adding phase change capsule materials before melt spinning.
Therefore, it is feasible to choose zirconium carbide material to modify polylactic acid fiber to give fiber heat storage and heat preservation function. However, zirconium carbide material has high hardness and wears the micropores of the spinneret. Carry out comprehensive research on the spinnability and heat storage and heat preservation effect of polylactic acid fiber spinning, and solve related problems

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Hollow heat storage and heat preservation polylactic acid fiber and preparation method thereof
  • Hollow heat storage and heat preservation polylactic acid fiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Preparation of 3C-shaped hollow polylactic acid fiber for heat storage and heat preservation

[0047] Mix 4g of zirconium carbide powder, 0.5g of silicon dioxide powder and 95.5g of 3-glycidyl etheroxypropyltrimethoxysilane coupling agent powder by weight percentage: 4%: 0.5%: 95.5%, and stir , disperse to obtain heat storage and heat preservation powder, and then blend 10g of the above heat storage and heat preservation powder with 90g of fiber-grade L-polylactic acid powder according to the weight percentage of 10%:90%, and dry (120°C, 4h), screw extrusion Melting (225-248°C), extrusion, water tank cooling, stranding, pelletizing and drying (130°C, 2h) to make heat-storage insulation masterbatch.

[0048] The thermal storage and thermal insulation masterbatch and fiber-grade L-polylactic acid slices prepared above were dried separately (maximum temperature 120°C, time 12-16 hours), and the weight-loss injection machine was measured separately, and the thermal storage ...

Embodiment 2

[0058] Preparation of four-T hollow polylactic acid fiber for heat storage and heat preservation

[0059] Mix 5g of zirconium carbide powder, 0.6g of silicon dioxide powder and 94.4g of 3-glycidyl etheroxypropyl trimethoxysilane coupling agent powder by weight percentage: 5%: 0.6%: 94.4%, and stir , disperse to obtain heat storage and heat preservation powder, then 13g of the above heat storage and heat preservation powder and 87g of fiber-grade L-polylactic acid powder are blended according to the weight percentage of 13%: 87%. After drying, screw extrusion, melting, extrusion, and water tank After cooling, drawing, pelletizing and drying, heat storage and heat preservation masterbatches are made.

[0060] The thermal storage and heat preservation masterbatch and fiber-grade L-polylactic acid slices prepared above are dried separately (the highest temperature is 120 ° C, and the time is 12-16 hours), and the weight-loss injection machine is measured separately, and the heat s...

Embodiment 3

[0070] Preparation of 3C-shaped hollow polylactic acid fiber for heat storage and heat preservation

[0071] Mix 6g of zirconium carbide powder, 0.8g of silicon dioxide powder and 93.2g of 3-glycidyl etheroxypropyltrimethoxysilane coupling agent powder by weight percentage: 6%: 0.8%: 93.2%, and stir , disperse to obtain heat storage and heat preservation powder, and then blend 10g of the above heat storage and heat preservation powder with 90g of fiber-grade L-polylactic acid powder according to the weight percentage of 10%:90%, and dry, screw extrusion, melting, extrusion, and water tank After cooling, drawing, pelletizing and drying, heat storage and heat preservation masterbatches are made.

[0072] The thermal storage and heat preservation masterbatch and fiber-grade L-polylactic acid slices prepared above are dried separately (the highest temperature is 120 ° C, and the time is 12-16 hours), and the weight-loss injection machine is measured separately, and the heat storag...

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
Login to View More

PUM

PropertyMeasurementUnit
particle sizeaaaaaaaaaa
sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a hollow heat-storage heat-preservation polylactic acid fiber which is prepared from the following components in percentage by weight: 5-10% of heat storage and heat preservation master batch and 90-95% of fiber-grade polylactic acid slices; wherein the heat storage and heat preservation master batch is prepared from the following components in percentage by weight: 10-15% of heat storage and heat preservation powder and 85-90% of fiber-grade L-polylactic acid powder; and wherein the heat storage and heat preservation powder is prepared from the following components in percentage by weight: 4-7% of zirconium carbide powder, 0.5-1% of silicon dioxide powder and 92-95.5% of coupling agent powder. According to the preparation method of the hollow heat storage and heat preservation polylactic acid fiber, zirconium carbide nano powder and silicon dioxide nano powder are selected to be used in cooperation, and abrasion of zirconium carbide materials to micropores of a spinneret plate can be avoided; and the coupling agent powder is selected to directly modify the surface of the zirconium carbide powder, so that the complicated process of modifying the surface of the powder by using coupling agent liquid can be omitted.

Description

technical field [0001] The invention belongs to the technical field of polylactic acid fiber preparation, and in particular relates to a hollow thermal storage polylactic acid fiber and a preparation method thereof. Background technique [0002] Polylactic acid fiber is currently recognized as a green and environmentally friendly fiber with renewable raw material sources and completely biodegradable fibers under certain conditions. Since 2020, countries around the world have issued "plastic ban orders", which has caused the global supply of polylactic acid chips and fibers to be in short supply, further promoting and promoting the development of the global polylactic acid fiber industry chain. However, compared with polyester (PET) fiber, which has the largest production volume in the world, wide application fields, and raw materials from petroleum, polylactic acid fiber is still a new type of fiber. How to further improve the biodegradability of polylactic acid fiber while ...

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
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/92D01F1/10D01D5/098D01D5/24D01D5/253
CPCD01F6/92D01F1/10D01D5/098D01D5/24D01D5/253
Inventor 王佳欢李忠李东华陈辉华陆育明冯忠耀王缘杨卫忠顾惠琴周永华
Owner SHANGHAI DEFULUN CHEM FIBER
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com