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Degradable cigarette filter tip filament bundle and preparation method thereof

A filter and tow technology, which is applied in the manufacture and application of e-liquid filter elements, rayon, etc., can solve the problems of easy hydrolysis, poor heat resistance, and effect effects, and achieve increased heat resistance, good adhesion, and easy The effect of the operation

Active Publication Date: 2015-12-23
ZHEJIANG HISUN BIOMATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cigarette filter made has the effect of adsorbing harmful substances in the smoke and filtering the solid particles. However, the cigarette filter made of pure polylactic acid is brittle and prone to hydrolysis, which affects the actual use. effect, and the problem of relatively poor heat resistance in actual use

Method used

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  • Degradable cigarette filter tip filament bundle and preparation method thereof
  • Degradable cigarette filter tip filament bundle and preparation method thereof
  • Degradable cigarette filter tip filament bundle and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Synthesis of polylactic acid copolymer:

[0028] Under the protection of nitrogen, add 83kg of terephthalic acid, 73kg of adipic acid, 90kg of butanediol and 0.1kg of tetrabutyl titanate into the reaction kettle with mechanical stirring, raise the temperature to 140°C under normal pressure and control the temperature Carry out the esterification reaction, and completely distill off the water; then raise the temperature to 210°C, and gradually reduce the pressure to 100Pa vacuum degree, and carry out the polycondensation reaction. After stirring for 2 hours, the corresponding intermediate product is obtained. After the reaction, reduce the temperature to At 120°C, add 700kg of dried L-lactide and 0.7kg of stannous octoate, react for 12 hours, protect with nitrogen, and then extrude and granulate to obtain poly-L-lactic acid block copolymer, that is, polylactic acid copolymer things.

Embodiment 2

[0030] The degradable cigarette filter tow of the present embodiment is mainly made of the following raw materials in parts by weight:

[0031] Poly L-lactic acid: 94; the number average molecular weight of the poly L-lactic acid is 200000, and the distribution width is 2.0;

[0032] Poly-D-lactic acid: 5.0; the number-average molecular weight of the poly-D-lactic acid is 180,000, and the distribution width is 2.0;

[0033] Polylactic acid copolymer: 1.0; the polylactic acid copolymer is formed by copolymerization of polylactic acid and polyadipic acid-terephthalic acid-butylene glycol, which can be prepared by the method of the above-mentioned embodiment 1, and the polylactic acid copolymer The mass ratio of polylactic acid to polyadipic acid-terephthalic acid-butylene glycol in the copolymer is 3:1;

[0034] Sodium stearate: 0.3.

[0035] The preparation method of the above-mentioned degradable cigarette filter tow is as follows:

[0036] According to the weight ratio of th...

Embodiment 3

[0038] The degradable cigarette filter tow of the present embodiment is mainly made of the following raw materials in parts by weight:

[0039] Poly L-lactic acid: 84; the number average molecular weight of the poly L-lactic acid is 120,000, the distribution width is 1.5, and the optical purity of L-lactic acid in the poly L-lactic acid is ≥98%;

[0040] Poly-D-lactic acid: 1.0; the number-average molecular weight of the poly-D-lactic acid is 100,000, the distribution width is 1.8, and the optical purity of D-lactic acid in the poly-D-lactic acid is ≥98%;

[0041] Polylactic acid copolymer: 15; the polylactic acid copolymer is formed by copolymerization of polylactic acid and polyadipic acid-terephthalic acid-butylene glycol, which can be prepared by the method of the above-mentioned embodiment 1, and the polylactic acid copolymer The mass ratio of polylactic acid to polyadipic acid-terephthalic acid-butylene glycol in the copolymer is 1:3; and the number average molecular wei...

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Abstract

The invention relates to a degradable cigarette filter tip filament bundle and a preparation method thereof, belongs to the degraded material field, and solves the problems that an existing filament bundle is poor in hear resistance and brittleness; the filament bundle mainly comprises the following raw materials by weight parts: 70-99 parts of poly L-lactic acid, 0.5-5.0 parts of poly D-lactic acid, 1.0-30 parts of polylactic acid copolymer, and 0.01-2.0 of eleaostearic acid and salt compound; the polylactic acid copolymer is formed by copolymerizing polylactic acid with poly adipic acid-terephthalic acid-butylene glycol; the raw materials are uniformly mixed so as to extrude granulates, thus obtaining polylactic acid modification resin particles; spinning, cooling, drawing-off and moudling the particles, and bonding the particles so as to obtain the degradable cigarette filter tip filament bundle. The degradable cigarette filter tip filament bundle is high in toughness and hear resistance, can improve filtering effect against harmful substances in flue gas; the method is simple in process.

Description

technical field [0001] The invention relates to a degradable cigarette filter tow and a preparation method thereof, belonging to the field of degradable materials. Background technique [0002] Cigarette filter is the product of cigarette development to a certain stage. When the filter first appeared, it was mainly used as a mouth-shaped part of a cigarette for decoration, and had almost no other functions. With the development of cigarette technology and people's pursuit of low-harm cigarettes, filters have gradually changed from dispensable to an indispensable part of cigarettes, and have assumed the function of reducing tar and harm. [0003] At present, the most widely used filter material for cigarettes is cellulose acetate tow. The cigarette filter material made of it has good elasticity, non-toxicity, tasteless, good thermal stability, small suction resistance, remarkable filtering effect, and high selectivity. It can effectively absorb the harmful components in cig...

Claims

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Application Information

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IPC IPC(8): D01D5/08A24D3/02A24D3/08D01F1/10
Inventor 边新超刘焱龙梁伟项盛孙彬冯立栋朱荣华丁伟伟
Owner ZHEJIANG HISUN BIOMATERIALS
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