CN112273715A - Filter core material of cigarette filter tip and preparation method - Google Patents
Filter core material of cigarette filter tip and preparation method Download PDFInfo
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- CN112273715A CN112273715A CN202010658385.6A CN202010658385A CN112273715A CN 112273715 A CN112273715 A CN 112273715A CN 202010658385 A CN202010658385 A CN 202010658385A CN 112273715 A CN112273715 A CN 112273715A
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- polypropylene
- polylactic acid
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- 235000019504 cigarettes Nutrition 0.000 title claims abstract description 48
- 239000011162 core material Substances 0.000 title abstract description 9
- 238000002360 preparation method Methods 0.000 title abstract description 6
- 229920000747 poly(lactic acid) Polymers 0.000 claims abstract description 48
- 239000004626 polylactic acid Substances 0.000 claims abstract description 48
- 239000000835 fiber Substances 0.000 claims abstract description 40
- 239000004744 fabric Substances 0.000 claims abstract description 35
- 239000011943 nanocatalyst Substances 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims abstract description 26
- 238000005507 spraying Methods 0.000 claims abstract description 25
- 230000008569 process Effects 0.000 claims abstract description 20
- 238000001035 drying Methods 0.000 claims abstract description 17
- 239000000853 adhesive Substances 0.000 claims abstract description 16
- 230000001070 adhesive effect Effects 0.000 claims abstract description 16
- 239000002131 composite material Substances 0.000 claims abstract description 8
- 239000004743 Polypropylene Substances 0.000 claims description 30
- -1 polypropylene Polymers 0.000 claims description 30
- 229920001155 polypropylene Polymers 0.000 claims description 30
- 239000000463 material Substances 0.000 claims description 22
- 239000000203 mixture Substances 0.000 claims description 11
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 10
- URAYPUMNDPQOKB-UHFFFAOYSA-N triacetin Chemical group CC(=O)OCC(OC(C)=O)COC(C)=O URAYPUMNDPQOKB-UHFFFAOYSA-N 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 9
- 239000004745 nonwoven fabric Substances 0.000 claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- 239000002994 raw material Substances 0.000 claims description 8
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 235000013773 glyceryl triacetate Nutrition 0.000 claims description 5
- 238000011068 loading method Methods 0.000 claims description 5
- 239000000155 melt Substances 0.000 claims description 5
- 239000004408 titanium dioxide Substances 0.000 claims description 5
- 229960002622 triacetin Drugs 0.000 claims description 5
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 239000011701 zinc Substances 0.000 claims description 4
- 229910052725 zinc Inorganic materials 0.000 claims description 4
- 239000002202 Polyethylene glycol Substances 0.000 claims description 3
- 229920001223 polyethylene glycol Polymers 0.000 claims description 3
- 238000007664 blowing Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- 239000011230 binding agent Substances 0.000 claims 1
- 239000001087 glyceryl triacetate Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- 229920005629 polypropylene homopolymer Polymers 0.000 claims 1
- 239000000779 smoke Substances 0.000 abstract description 10
- 239000000126 substance Substances 0.000 abstract description 10
- SNICXCGAKADSCV-JTQLQIEISA-N (-)-Nicotine Chemical compound CN1CCC[C@H]1C1=CC=CN=C1 SNICXCGAKADSCV-JTQLQIEISA-N 0.000 abstract description 7
- 229960002715 nicotine Drugs 0.000 abstract description 7
- SNICXCGAKADSCV-UHFFFAOYSA-N nicotine Natural products CN1CCCC1C1=CC=CN=C1 SNICXCGAKADSCV-UHFFFAOYSA-N 0.000 abstract description 7
- 230000036541 health Effects 0.000 abstract description 4
- 238000000465 moulding Methods 0.000 abstract 1
- 238000001914 filtration Methods 0.000 description 7
- 229920002301 cellulose acetate Polymers 0.000 description 6
- 150000001299 aldehydes Chemical class 0.000 description 4
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000002074 melt spinning Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 230000000391 smoking effect Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000004594 Masterbatch (MB) Substances 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 244000017020 Ipomoea batatas Species 0.000 description 1
- 235000002678 Ipomoea batatas Nutrition 0.000 description 1
- 206010058467 Lung neoplasm malignant Diseases 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229920002988 biodegradable polymer Polymers 0.000 description 1
- 239000004621 biodegradable polymer Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 239000007857 degradation product Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000004310 lactic acid Substances 0.000 description 1
- 235000014655 lactic acid Nutrition 0.000 description 1
- 201000005202 lung cancer Diseases 0.000 description 1
- 208000020816 lung neoplasm Diseases 0.000 description 1
- 210000000214 mouth Anatomy 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 235000019633 pungent taste Nutrition 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 238000007127 saponification reaction Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 230000009967 tasteless effect Effects 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
- A24D3/06—Use of materials for tobacco smoke filters
- A24D3/08—Use of materials for tobacco smoke filters of organic materials as carrier or major constituent
- A24D3/10—Use of materials for tobacco smoke filters of organic materials as carrier or major constituent of cellulose or cellulose derivatives
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
- A24D3/06—Use of materials for tobacco smoke filters
- A24D3/061—Use of materials for tobacco smoke filters containing additives entrapped within capsules, sponge-like material or the like, for further release upon smoking
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Cigarettes, Filters, And Manufacturing Of Filters (AREA)
Abstract
The invention discloses a cigarette filter tip filter core material and a preparation method thereof, and is characterized in that: the method is characterized in that: the polypropylene-polylactic acid composite melt-blown fabric consists of polypropylene-polylactic acid composite melt-blown fabric fiber modified by a compatibilizer and a nano catalyst adhered on the melt-blown fabric through an adhesive; wherein the weight ratio of the adhesive to the nano catalyst is 1: (0.1-0.15), the nano catalyst is loaded on the melt-blown cloth fiber through a spraying process and a drying process, and the nano catalyst is adhered on the melt-blown cloth fiber through an adhesive. The filter core material is molded by a cigarette filter core molding machine to obtain the cigarette filter core. The cigarette filter tip prepared by the method of the invention not only can effectively filter the harmful components such as tar, nicotine and the like in the smoke, but also can decompose most of the unfiltered harmful substances into harmless substances in a short time by introducing the nano catalyst, thereby effectively reducing the harm of the cigarette to the human health.
Description
Technical Field
The invention relates to a cigarette filter core material and a preparation method thereof, belonging to the field of non-woven fabric materials and cigarette filter materials.
Background
As is well known, smoking is harmful to human health, and in order to reduce the harm to human bodies, many means are taken by merchants, such as adding filter tips. Research shows that harmful substances decomposed by smoking, such as tar, aldehydes, nicotine and the like, can cause fatal diseases such as lung cancer and the like. The loss caused by smoking in China is up to more than one billion yuan each year.
The cigarette filter tip is an important component of a cigarette and is used for filtering and blocking a part of saline-alkali tar in smoke and reducing the harm of harmful substances in the smoke to human bodies when smokers smoke.
Currently, the material of cigarette filters consists mainly of cellulose acetate fibers or polypropylene fibers. The cellulose acetate is easily spun into fine fibers through a melt spinning process, and the filter stick and the filter made of the rolled fine fibers have excellent filterability and are the best filter material at present. However, since the cellulose acetate fiber is obtained by using wood as a raw material and through steps of cellulose extraction, acetification, saponification and the like, a large amount of waste water, waste gas and waste residues which seriously pollute the environment are generated in the preparation process. And forest resources in China are in short supply, cellulose acetate cannot be self-supplied, the cellulose acetate mainly depends on import, and the price is high, so that the cellulose acetate is not suitable for being used in large quantities. The polypropylene is easy to prepare fibers through melt spinning, has good lipophilicity, is nontoxic and tasteless, but is difficult to form a net structure after fiber opening due to the non-polarity and high crystallinity of the polypropylene, so that the filter tip prepared from the single polypropylene fiber has poor filtering effect and cannot meet the requirement of people on the filtering effect of the filter tip.
In recent years, there has been a great deal of development of biodegradable polymers, particularly lactic acid polymers such as polylactic acid. The research shows that the polylactic acid has better processing performance and can be processed by various processing technologies of common thermoplastic polymers, including a melt spinning technology. After the polylactic acid is formed into fibers by a spinning process, the polylactic acid has good adsorption and filtration functions on nicotine and tar. This provides the possibility of processing polylactic acid into filter material. Besides, the polylactic acid fiber has two advantages: firstly, the raw materials for preparing the polylactic acid fiber can be derived from natural starch such as corn, sweet potato and the like, the resources can be regenerated, the sources are rich, and the price is low; and secondly, the polylactic acid is a biodegradable material, the degradation products of the polylactic acid are water and carbon dioxide, no pollutant is generated, and the polylactic acid cannot cause pressure on environmental pollution when being used in large quantities. Unfortunately, polylactic acid fibers do not meet the core process of the filter process.
At present, cigarette filters made of fibers have nicotine and tar filtering performance, but can only filter 30% -50% of harmful substances. Or a part of harmful substances enter the oral cavity and respiratory tract of the human body through the cigarette filter tip, thereby causing harm to the health of the human body. Many researches show that the nano metal catalyst can decompose substances such as low aldehydes, aliphatic hydrocarbons and the like into harmless substances in a short time.
Disclosure of Invention
The invention aims to provide a filter element material of a cigarette filter and a preparation method thereof. On one hand, the polypropylene and polylactic acid mixed melt-blown fabric fiber has low price, is easy to produce, has filtering performance superior to that of polypropylene fiber, and can reduce the harm of the cigarette filter tip to the environment. On the other hand, the introduction of the nano catalyst further decomposes substances such as low aldehydes, aliphatic hydrocarbons and the like in the smoke, and reduces the harm of the cigarette smoke to human bodies. The filter element of the cigarette filter can solve the problem of filtering cigarette smoke in the modern society.
In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows: a filter element material for cigarette filter, which is characterized in that: the polypropylene-polylactic acid composite melt-blown fabric consists of polypropylene-polylactic acid composite melt-blown fabric fiber modified by a compatibilizer and a nano catalyst adhered on the melt-blown fabric through an adhesive; wherein the weight ratio of the adhesive to the nano catalyst is 1: (0.1-0.15), the nano catalyst is loaded on the melt-blown cloth fiber through a spraying process and a drying process, and the nano catalyst is adhered on the melt-blown cloth fiber through an adhesive.
Preferably, the polypropylene-polylactic acid composite meltblown fiber modified by the compatibilizer is prepared by mixing polypropylene, polylactic acid and the compatibilizer in a weight ratio of 1: (0.25-0.35): (0.03-0.1) uniformly stirring the mixture in a double screw to form mixed master batches, and extruding the mixed master batches by a melt-blowing process to obtain the master batches.
Preferably, the polypropylene is homopolymerized polypropylene, and the melt index is 1200-1500g/10 min; the polylactic acid is L-polylactic acid, and the number average molecular weight is 100000-140000 Mn; the compatibilizer is one of polyethylene glycol, polypropylene grafted maleic anhydride or maleic anhydride.
Preferably, the adhesive is glycerol triacetate; the adhesive is the guarantee of the bonding strength between the nano catalyst and the polypropylene/polylactic acid melt-blown cloth fiber.
The nano catalyst is one or more of titanium dioxide, iron or zinc.
The invention also provides a method for preparing the cigarette filter core material, which comprises the following steps:
a) preparing melt-blown cloth: uniformly stirring raw materials of polypropylene, polylactic acid and a compatibilizer by a stirrer according to a proportion, feeding the mixture into a double screw, and extruding and granulating the mixture to obtain mixed master batches; then, polypropylene-polylactic acid mixed melt-blown cloth fiber modified by the compatibilizer is obtained through a melt-blown process;
b) the nano catalyst loading process comprises the following steps: the adhesive and the nano catalyst are mixed according to the weight ratio of 1: (0.1-0.15), and uniformly stirring to prepare a spraying liquid; spraying the spraying liquid on polypropylene-polylactic acid mixed melt-blown fabric fibers modified by a compatibilizer to obtain a sprayed non-woven fabric;
c) drying: and drying the sprayed polypropylene-polylactic acid melt-blown cloth to obtain the filter element material of the cigarette filter.
Preferably, in the step a), the raw materials including polypropylene, polylactic acid and the compatibilizer are mixed according to a weight ratio of 1: (0.25-0.35): (0.03-0.1) in the ratio.
Preferably, the amount sprayed in step b) is from 15 to 25g/m2The spraying pressure range is between 0.08 and 0.1 MPa.
Preferably, the drying process in the step c) is heating to 100-110 ℃ for 15-20 min.
Has the advantages that:
1. the powerful and effective cigarette filter element prepared by the invention combines the polypropylene fiber and the polylactic acid fiber, has low material price and is easy to produce. The application of the polylactic acid reduces the harm of the cigarette filter tip to the environment.
2. The cigarette filter tip prepared by only using the polypropylene fiber has poor mouthfeel during use, and particularly, the cigarette filter tip has heavy pungency and is difficult to be accepted by smokers. The filter tip prepared by the invention has more refreshing mouthfeel, can give different feelings to smokers, and has excellent economic benefit.
3. The powerful and effective cigarette filter element prepared by the invention contains the nano metal catalyst capable of decomposing harmful substances such as low aldehydes, aliphatic hydrocarbon and the like, and provides better guarantee for the health of smokers.
Detailed Description
In order to enhance understanding of the present invention, the present invention will be described in further detail with reference to examples, which are provided for illustrating the present invention and are not limited to the examples.
Example 1
a) Preparing melt-blown fabric: raw materials of polypropylene (the melt index is 1200g/10min), levorotatory polylactic acid (the number average molecular weight is 100000-140000Mn) and polypropylene grafted maleic anhydride compatibilizer are mixed according to the weight ratio of 1: 0.35: 0.1 is evenly stirred by a stirrer and enters a double screw at 220 ℃, and the mixture is extruded and granulated to form mixed master batch. Then, the polypropylene/polylactic acid mixed melt-blown cloth fiber is obtained through the melt-blown process;
b) the nano catalyst loading process comprises the following steps: mixing a glycerol triacetate adhesive and a nano catalyst (titanium dioxide and iron are mixed according to a ratio of 4: 6) according to a weight ratio of 1: mixing at a ratio of 0.11, and stirring to obtain spray solution. Spraying the spraying liquid on the polypropylene/polylactic acid mixed melt-blown fabric fiber, wherein the spraying amount is 25g/m2Spraying at a pressure of 0.1mpa to obtain a sprayed non-woven fabric;
c) and (3) drying process: drying the sprayed non-woven fabric in a drying oven at 110 ℃ for 15min, and cooling to obtain the filter element material of the cigarette filter. ,
d) the filter element forming process comprises the following steps: and winding the obtained filter element material into roll paper, and forming by a cigarette filter element forming machine to obtain the cigarette filter element.
And (3) testing results: after cigarette smoke passes through the filter element of the cigarette filter, the removal rate of nicotine, tar and particles reaches 83.15 percent.
Example 2
a) Preparing melt-blown fabric: raw materials of polypropylene (the melt index is 1300g/10min), levorotatory polylactic acid (the number average molecular weight is 100000-140000Mn) and polyethylene glycol compatibilizer are mixed according to the weight ratio of 1: 0.30: 0.08 is evenly stirred by a stirrer and enters a double screw at the temperature of 210 ℃, and the mixture is extruded and granulated to form mixed master batch. Then, the polypropylene/polylactic acid mixed melt-blown cloth fiber is obtained through the melt-blown process;
b) the nano catalyst loading process comprises the following steps: mixing a glycerol triacetate adhesive and a nano catalyst (titanium dioxide and zinc in a ratio of 2: 8) according to a weight ratio of 1: 0.13, and stirring uniformly to prepare the spray coating liquid. Spraying the spraying liquid on the polypropylene/polylactic acid mixed melt-blown fabric fiber, wherein the spraying amount is 20g/m2Spraying at a pressure of 0.09mpa to obtain a sprayed non-woven fabric;
c) and (3) drying process: drying the sprayed non-woven fabric in a drying oven at 105 ℃ for 18min, and cooling to obtain the filter element material of the cigarette filter.
d) The filter element forming process comprises the following steps: and winding the obtained filter element material into roll paper, and forming by a cigarette filter element forming machine to obtain the cigarette filter element.
And (3) testing results: after cigarette smoke passes through the filter element of the cigarette filter tip, the removal rate of nicotine, tar and particles reaches 85.23 percent.
Example 3
a) Preparing melt-blown cloth: raw materials of polypropylene (the melt index is 1450g/10min), levorotatory polylactic acid (the number average molecular weight is 100000-140000Mn) and maleic anhydride compatibilizer are mixed according to the weight ratio of 1: 0.25: 0.05, stirring the mixture evenly by a stirrer, feeding the mixture into a double screw at 215 ℃, and extruding and granulating the mixture to obtain mixed master batches. Then, the polypropylene/polylactic acid mixed melt-blown cloth fiber is obtained through the melt-blown process;
b) the nano catalyst loading process comprises the following steps: mixing a glycerol triacetate adhesive and a nano catalyst (titanium dioxide, iron and zinc in a ratio of 2: 5: 3) according to a weight ratio of 1: 0.15, and uniformly stirring to prepare the spraying liquid. Spraying the spraying liquid on the polypropylene/polylactic acid mixed melt-blown fabric fiber, wherein the spraying amount is 17g/m2Spraying at a pressure of 0.08mpa to obtain a sprayed non-woven fabric;
c) and (3) drying process: drying the sprayed non-woven fabric in an oven at 100 ℃ for 20min, and cooling to obtain the filter element material of the cigarette filter.
d) The filter element forming process comprises the following steps: and winding the obtained filter element material into roll paper, and forming by a cigarette filter element forming machine to obtain the cigarette filter element.
And (3) testing results: after cigarette smoke passes through the filter element of the cigarette filter, the removal rate of nicotine, tar and particles reaches 82.64 percent.
Claims (8)
1. A filter element material for cigarette filter, which is characterized in that: the polypropylene-polylactic acid composite melt-blown fabric consists of polypropylene-polylactic acid composite melt-blown fabric fiber modified by a compatibilizer and a nano catalyst adhered on the melt-blown fabric through an adhesive; wherein the weight ratio of the adhesive to the nano catalyst is 1: (0.1-0.15), the nano catalyst is loaded on the melt-blown cloth fiber through a spraying process and a drying process, and the nano catalyst is adhered on the melt-blown cloth fiber through an adhesive.
2. A filter element material of a cigarette filter according to claim 1, characterized in that the compatibilizer modified polypropylene-polylactic acid composite melt-blown fabric fiber is prepared by mixing polypropylene, polylactic acid and a compatibilizer in a weight ratio of 1: (0.25-0.35): (0.03-0.1) uniformly stirring the mixture in a double screw to form mixed master batches, and extruding the mixed master batches by a melt-blowing process to obtain the master batches.
3. The filter element material of cigarette filter according to claim 2, wherein the polypropylene is homo-polypropylene, and the melt index is 1200-1500g/10 min; the polylactic acid is L-polylactic acid, and the number average molecular weight is 100000-140000 Mn; the compatibilizer is one of polyethylene glycol, polypropylene grafted maleic anhydride or maleic anhydride.
4. A cigarette filter cartridge material as in claim 1 wherein the binder is triacetin; the nano catalyst is one or more of titanium dioxide, iron or zinc.
5. A method of making a cigarette filter element material of claim 1 comprising the steps of:
a) preparing melt-blown cloth: uniformly stirring raw materials of polypropylene, polylactic acid and a compatibilizer by a stirrer according to a proportion, feeding the mixture into a double screw, and extruding and granulating the mixture to obtain mixed master batches; then, polypropylene-polylactic acid mixed melt-blown cloth fiber modified by the compatibilizer is obtained through a melt-blown process;
b) the nano catalyst loading process comprises the following steps: the adhesive and the nano catalyst are mixed according to the weight ratio of 1: (0.1-0.15), and uniformly stirring to prepare a spraying liquid; spraying the spraying liquid on polypropylene-polylactic acid mixed melt-blown fabric fibers modified by a compatibilizer to obtain a sprayed non-woven fabric;
c) drying: and drying the sprayed polypropylene-polylactic acid melt-blown cloth to obtain the filter element material of the cigarette filter.
6. The method according to claim 5, characterized in that in step a) the raw polypropylene, polylactic acid and compatibilizer are mixed in a weight ratio of 1: (0.25-0.35): (0.03-0.1) in the ratio.
7. The method according to claim 5, characterized in that the amount sprayed in step b) is 15-25g/m2The spraying pressure range is between 0.08 and 0.1 MPa.
8. The method as claimed in claim 5, wherein the drying process in step c) is heating to 100 ℃ and 110 ℃ for 15-20 min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010658385.6A CN112273715A (en) | 2020-07-09 | 2020-07-09 | Filter core material of cigarette filter tip and preparation method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010658385.6A CN112273715A (en) | 2020-07-09 | 2020-07-09 | Filter core material of cigarette filter tip and preparation method |
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| CN112273715A true CN112273715A (en) | 2021-01-29 |
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2020
- 2020-07-09 CN CN202010658385.6A patent/CN112273715A/en active Pending
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|---|---|---|---|---|
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| Title |
|---|
| 杨钦等: "可生物降解聚乳酸/助剂/聚丙烯复合纺粘非织造布的制备与性能研究", 《化工新型材料》 * |
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