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A polymer-based cigarette filter material with excellent temperature control effect and its preparation method

A polymer material and polymer-based technology, which is applied in the field of polymer-based cigarette filter materials and its preparation, can solve the problems of poor filter interception effect, poor sensory quality of cigarettes, and poor biodegradability, etc., and achieve excellent biodegradation properties, high latent heat of phase change, and stable performance

Active Publication Date: 2021-05-07
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the prominent problems of the existing cigarette filters, which are easy to cause environmental pollution due to poor biodegradability, as well as the poor interception effect of the filter and the poor sensory quality of cigarettes caused by excessively high smoke temperature during cigarette smoking, the present invention provides a A polymer-based cigarette filter material with excellent temperature control effect and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] 1. Preparation of microcapsule phase change material: Take 50mL of toluene solution, add 14.3g of PEG-2000 and acrylonitrile monomer (mass ratio 1:1), heat and stir, the amount of additive Span-80 accounts for the amount of PEG 10%, the emulsification temperature is 50°C, under the assistance of ultrasound, fully stir and disperse into very fine particles. After that, 2 g of initiator azobisisobutyronitrile was added, the temperature was controlled at about 50° C., and the reaction was kept for 4 hours. After the reaction, wash the microcapsules with alcohol and distilled water for 2-3 times respectively, then filter with suction and dry in vacuum to obtain the microcapsules PEG-2000.

[0032] 2. Preparation of modified BN: Take 1.0g BN, disperse it in 500mL water, and ultrasonicate it for 8-10h. Then add 1.0gPEI-10000 and continue to sonicate for 4h. After the reaction, the unstripped BN was removed by centrifugation at 4000 rpm. The filtrate was suction filtered an...

Embodiment 2

[0038] 1. Preparation of microcapsule phase change material: Take 50mL of toluene solution, add 14.3g of PEG-6000 and acrylonitrile monomer (mass ratio: 1:1), heat and stir, the amount of additive Span-80 accounts for the amount of PEG 8%, the emulsification temperature is 50°C, under the assistance of ultrasound, fully stir and disperse into very fine particles. After that, 5 g of initiator azobisisobutyronitrile was added, the temperature was controlled at about 50° C., and the reaction was kept for 6 hours. After the reaction is finished, the microcapsules are washed with alcohol and distilled water for 2-3 times, then filtered with suction and vacuum-dried to obtain PEG-6000 microcapsules.

[0039] 2. Preparation of modified BN: Take 1.0g BN, disperse it in 500mL water, and ultrasonicate it for 8-10h. Then add 2.0gPEI-12000 and continue to sonicate for 4h. After the reaction, the unstripped BN was removed by centrifugation at 4000 rpm. The filtrate was suction filtered ...

Embodiment 3

[0045] 1. Preparation of microcapsule phase change materials: Take 50mL of toluene solution, add 14.3g of PEG-4000 and acrylonitrile monomer (mass ratio: 1:2), heat and stir, the amount of additive Span-80 accounts for the amount of PEG 10%, the emulsification temperature is 60°C, under the assistance of ultrasonic, fully stir and disperse into very fine particles. After that, 2 g of initiator azobisisobutyronitrile was added, the temperature was controlled at about 50° C., and the reaction was kept for 4 hours. After the reaction, wash the microcapsules with alcohol and distilled water for 2-3 times, then filter with suction and dry in vacuum to obtain the microcapsules PEG-4000.

[0046] 2. Preparation of modified AlN: Take 1.0g of AlN, disperse it in 500mL of ethanol, and treat it ultrasonically for 6-8h. After that, 1.0 g of vinyltriethoxysilane was added, and ultrasonication was continued for 4 h. After the reaction was finished, unstripped AlN was removed by centrifuga...

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PUM

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Abstract

The invention discloses a high-molecular-based cigarette filter material with excellent temperature control effect and a preparation method thereof. Phase change materials and nanoparticles with high thermal conductivity are processed; the polymer material is one of polycaprolactone, polyhydroxyalkanoate, poly 3-hydroxybutyrate, polyglycolide polymer material or Several kinds; the microcapsule phase change material is microencapsulated polyethylene glycol, with polyethylene glycol as the core material and polyacrylonitrile as the wall material. The method of the invention can prepare a low-cost, safe and harmless multi-component polymer-based composite material suitable for cigarette filters with high phase change latent heat and heat transfer capacity. Using it as a new type of cigarette filter can effectively reduce the mainstream smoke of cigarettes, and has the characteristics of low dosage, obvious cooling effect, and significant reduction of harmful substances in smoke.

Description

technical field [0001] The invention relates to a polymer-based cigarette filter material with excellent temperature control effect and a preparation method thereof. Background technique [0002] As people pay more and more attention to the issue of "smoking and health" and the global anti-smoking movement continues to rise, it is a very important task to comprehensively reduce the amount of tar and harmful components in cigarette smoke, and it is also an inevitable part of the development of the tobacco industry roads and major issues that governments need to address urgently. Most components in cigarette smoke are toxic to the human body, such as benzene, 2-aniline, 4-aminobiphenyl, aldehydes, volatile nitrosamines, tobacco-specific nitrosamines, benzopyrene, etc., are all possible carcinogenic substances. As a bridge between the smoker and the smoke, the cigarette filter is an important medium for reducing tar and harm. The aerosol particles released during the burning...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A24D3/08
CPCA24D3/08
Inventor 胡伟兆汪俊岭汪碧波宋磊胡源
Owner UNIV OF SCI & TECH OF CHINA
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