High-fluidity degradable polyester melt-blown material, and preparation method and application thereof

A technology of degrading polyester and high fluidity is applied in the field of polymer preparation, which can solve the problems of waste mask pollution and short supply of polypropylene meltblown materials.

Pending Publication Date: 2021-07-06
RED AVENUE NEW MATERIALS GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This degradable melt-blown cloth can not only alleviate the serious shortage of polypropylene melt-blown materials during the epidemic, but also solve the pollution problem of discarded masks

Method used

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  • High-fluidity degradable polyester melt-blown material, and preparation method and application thereof
  • High-fluidity degradable polyester melt-blown material, and preparation method and application thereof
  • High-fluidity degradable polyester melt-blown material, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] Take ethylene glycol 100, terephthalic acid 20, oxalic acid 60, trimethyl phosphate 0.015, hydroquinone 0.072, then heat up to 180 ° C, in N 2 React under the atmosphere for 3 hours, then raise the temperature to 200°C, add 0.5% antimony acetate / ethylene glycol mixed solution (concentration: 20g / L), vacuumize to 4kPa, and react for 0.5h; raise the temperature to 220°C, and vacuum until the system pressure is 300Pa , react for 1h, discharge, cool, draw, granulate, and dry to obtain the high-fluidity degradable polyester melt-blown material, whose molecular structure is as follows:

[0060]

[0061] X=12 y=66 n=0 x:y=0.182 Total alkyd ratio=2 Terephthalic acid / total acid mole fraction=15%.

Embodiment 2

[0063] Take ethylene glycol 100, terephthalic acid 30, oxalic acid 65, trimethyl phosphate 0.02, hydroquinone 0.079, then heat up to 190 ° C, in N 2 React under atmosphere for 4 hours, then raise the temperature to 220°C, add antimony acetate / ethylene glycol 0.6 (concentration: 20g / L), evacuate to 4kPa, react for 1h; heat up to 240°C, evacuate to a system pressure of 300Pa, and react for 2h , discharging, cooling, wire drawing, granulation, and drying to obtain the high-fluidity degradable polyester melt-blown material, whose molecular structure is as follows:

[0064]

[0065] X=18 y=72 n=0 x:y=0.25 Total alkyd ratio=1.8 Terephthalic acid / total acid mole fraction=20%.

Embodiment 3

[0067] Take 1,4-butanediol 100, terephthalic acid 40, succinic acid 72, triphenyl phosphite 0.025, antioxidant I-10100.085, and then heat up to 200 ° C, in N 2 React under atmosphere for 3h, then add tetrabutyl titanate / 1,4-butanediol mixed solution 0.45 (concentration: 20g / L), heat up to 230°C, vacuumize to 4kPa, react for 0.5h; after cooling to room temperature, Raise the temperature to 250°C, evacuate to a system pressure of 300Pa, react for 0.5h, discharge, cool, draw, granulate, and dry to obtain the high-fluidity degradable polyester melt-blown material, its molecular structure as follows:

[0068]

[0069] X=24 y=61 n=2 x:y=0.39 Total alkyd ratio=1.4 Terephthalic acid / total acid mole fraction=28%.

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Abstract

The invention discloses a high-fluidity degradable polyester melt-blown material, and a preparation method and application thereof. The molecular structure of the high-fluidity degradable polyester melt-blown material is as shown in the specification. In the structure, n is equal to 0, 2, 4 or 8, x is greater than or equal to 12 and smaller than or equal to 65, y is greater than or equal to 31 and smaller than or equal to 120, and a ratio of x: y is smaller than or equal to 2: 5. The melt-blown material disclosed by the invention is high in melt index, can be used for preparing melt-blown cloth materials applied to masks, is finally made into degradable masks, and provides an effective way for solving the pollution problem of waste masks.

Description

technical field [0001] The invention relates to the technical field of high molecular polymer preparation, and furthermore, relates to a high fluidity degradable polyester melt-blown material, a preparation method and an application. Background technique [0002] Melt-blown cloth is the core filter layer material of anti-virus masks. At present, it is basically prepared from polypropylene plastic through a melt-blown process. Due to the emergence of the 2019 novel coronavirus (2019-nCoV), people across the country consumed a large amount of masks. According to reports, 162,000 tons of discarded masks were added nationwide in just two or three months. Since the polypropylene material is not degradable, serious pollution is caused. Degradable materials are currently a hot spot in international research. In recent years, many degradable high-strength materials such as polylactic acid, polybutylene succinate, and polyadipate-terephthalate Molecular materials, through the devel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/183
CPCC08G63/183
Inventor 赵燕超王朝张立群唐帅张奇男董栋张宁
Owner RED AVENUE NEW MATERIALS GRP CO LTD
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