CN113841926A - Cigarette filter stick and preparation method and application thereof - Google Patents
Cigarette filter stick and preparation method and application thereof Download PDFInfo
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- CN113841926A CN113841926A CN202110932106.5A CN202110932106A CN113841926A CN 113841926 A CN113841926 A CN 113841926A CN 202110932106 A CN202110932106 A CN 202110932106A CN 113841926 A CN113841926 A CN 113841926A
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- silicon
- cigarette filter
- silica sol
- filter stick
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- 235000019504 cigarettes Nutrition 0.000 title claims abstract description 90
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 81
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 81
- 239000010703 silicon Substances 0.000 claims abstract description 81
- 239000004964 aerogel Substances 0.000 claims abstract description 44
- 239000002131 composite material Substances 0.000 claims abstract description 39
- 241000208125 Nicotiana Species 0.000 claims abstract description 33
- 235000002637 Nicotiana tabacum Nutrition 0.000 claims abstract description 33
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims description 48
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 40
- 239000002904 solvent Substances 0.000 claims description 37
- 239000003054 catalyst Substances 0.000 claims description 36
- 238000006243 chemical reaction Methods 0.000 claims description 33
- 239000000835 fiber Substances 0.000 claims description 33
- 239000004094 surface-active agent Substances 0.000 claims description 33
- 238000002156 mixing Methods 0.000 claims description 29
- 230000002378 acidificating effect Effects 0.000 claims description 28
- 238000005520 cutting process Methods 0.000 claims description 21
- 239000000203 mixture Substances 0.000 claims description 19
- 239000011148 porous material Substances 0.000 claims description 19
- -1 silicate ester Chemical class 0.000 claims description 15
- 125000000217 alkyl group Chemical group 0.000 claims description 12
- 229920006221 acetate fiber Polymers 0.000 claims description 10
- 239000003795 chemical substances by application Substances 0.000 claims description 10
- 238000001179 sorption measurement Methods 0.000 claims description 9
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 7
- 239000004743 Polypropylene Substances 0.000 claims description 6
- YYLGKUPAFFKGRQ-UHFFFAOYSA-N dimethyldiethoxysilane Chemical compound CCO[Si](C)(C)OCC YYLGKUPAFFKGRQ-UHFFFAOYSA-N 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 6
- BFXIKLCIZHOAAZ-UHFFFAOYSA-N methyltrimethoxysilane Chemical compound CO[Si](C)(OC)OC BFXIKLCIZHOAAZ-UHFFFAOYSA-N 0.000 claims description 6
- 229920001155 polypropylene Polymers 0.000 claims description 6
- LFQCEHFDDXELDD-UHFFFAOYSA-N tetramethyl orthosilicate Chemical compound CO[Si](OC)(OC)OC LFQCEHFDDXELDD-UHFFFAOYSA-N 0.000 claims description 5
- 239000004642 Polyimide Substances 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 4
- 239000004310 lactic acid Substances 0.000 claims description 4
- 235000014655 lactic acid Nutrition 0.000 claims description 4
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 4
- 229920001721 polyimide Polymers 0.000 claims description 4
- 238000000352 supercritical drying Methods 0.000 claims description 4
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims description 3
- 238000013329 compounding Methods 0.000 claims description 3
- ZMAPKOCENOWQRE-UHFFFAOYSA-N diethoxy(diethyl)silane Chemical compound CCO[Si](CC)(CC)OCC ZMAPKOCENOWQRE-UHFFFAOYSA-N 0.000 claims description 3
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 3
- UQMOLLPKNHFRAC-UHFFFAOYSA-N tetrabutyl silicate Chemical compound CCCCO[Si](OCCCC)(OCCCC)OCCCC UQMOLLPKNHFRAC-UHFFFAOYSA-N 0.000 claims description 3
- CPUDPFPXCZDNGI-UHFFFAOYSA-N triethoxy(methyl)silane Chemical compound CCO[Si](C)(OCC)OCC CPUDPFPXCZDNGI-UHFFFAOYSA-N 0.000 claims description 3
- JVTAAEKCZFNVCJ-UHFFFAOYSA-M Lactate Chemical compound CC(O)C([O-])=O JVTAAEKCZFNVCJ-UHFFFAOYSA-M 0.000 claims description 2
- 239000003377 acid catalyst Substances 0.000 claims description 2
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims description 2
- VSYLGGHSEIWGJV-UHFFFAOYSA-N diethyl(dimethoxy)silane Chemical compound CC[Si](CC)(OC)OC VSYLGGHSEIWGJV-UHFFFAOYSA-N 0.000 claims description 2
- JJQZDUKDJDQPMQ-UHFFFAOYSA-N dimethoxy(dimethyl)silane Chemical compound CO[Si](C)(C)OC JJQZDUKDJDQPMQ-UHFFFAOYSA-N 0.000 claims description 2
- SBRXLTRZCJVAPH-UHFFFAOYSA-N ethyl(trimethoxy)silane Chemical compound CC[Si](OC)(OC)OC SBRXLTRZCJVAPH-UHFFFAOYSA-N 0.000 claims description 2
- DENFJSAFJTVPJR-UHFFFAOYSA-N triethoxy(ethyl)silane Chemical compound CCO[Si](CC)(OCC)OCC DENFJSAFJTVPJR-UHFFFAOYSA-N 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 21
- 239000000463 material Substances 0.000 abstract description 12
- 239000000843 powder Substances 0.000 abstract description 10
- 239000011858 nanopowder Substances 0.000 abstract description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 36
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 20
- 238000003756 stirring Methods 0.000 description 17
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 description 12
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 10
- 229960000583 acetic acid Drugs 0.000 description 10
- 239000012362 glacial acetic acid Substances 0.000 description 10
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 9
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 9
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 8
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 8
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 8
- 239000002245 particle Substances 0.000 description 8
- SNICXCGAKADSCV-JTQLQIEISA-N (-)-Nicotine Chemical compound CN1CCC[C@H]1C1=CC=CN=C1 SNICXCGAKADSCV-JTQLQIEISA-N 0.000 description 7
- 230000032683 aging Effects 0.000 description 7
- 229960002715 nicotine Drugs 0.000 description 7
- SNICXCGAKADSCV-UHFFFAOYSA-N nicotine Natural products CN1CCCC1C1=CC=CN=C1 SNICXCGAKADSCV-UHFFFAOYSA-N 0.000 description 7
- 125000003545 alkoxy group Chemical group 0.000 description 6
- 229920002301 cellulose acetate Polymers 0.000 description 6
- 239000013618 particulate matter Substances 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 239000000779 smoke Substances 0.000 description 5
- 238000002791 soaking Methods 0.000 description 5
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 4
- SUAKHGWARZSWIH-UHFFFAOYSA-N N,N‐diethylformamide Chemical compound CCN(CC)C=O SUAKHGWARZSWIH-UHFFFAOYSA-N 0.000 description 4
- RVGRUAULSDPKGF-UHFFFAOYSA-N Poloxamer Chemical compound C1CO1.CC1CO1 RVGRUAULSDPKGF-UHFFFAOYSA-N 0.000 description 4
- 229910021529 ammonia Inorganic materials 0.000 description 4
- 125000004432 carbon atom Chemical group C* 0.000 description 4
- 229960000502 poloxamer Drugs 0.000 description 4
- 229920001983 poloxamer Polymers 0.000 description 4
- 230000000391 smoking effect Effects 0.000 description 4
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000005470 impregnation Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 235000006408 oxalic acid Nutrition 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 description 2
- 235000011114 ammonium hydroxide Nutrition 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 239000004831 Hot glue Substances 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 description 1
- 239000002280 amphoteric surfactant Substances 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003093 cationic surfactant Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 238000004108 freeze drying Methods 0.000 description 1
- 150000004676 glycans Chemical class 0.000 description 1
- 230000005802 health problem Effects 0.000 description 1
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 1
- 125000001972 isopentyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 239000004816 latex Substances 0.000 description 1
- 229920000126 latex Polymers 0.000 description 1
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000001280 n-hexyl group Chemical group C(CCCCC)* 0.000 description 1
- 125000000740 n-pentyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001282 polysaccharide Polymers 0.000 description 1
- 239000005017 polysaccharide Substances 0.000 description 1
- 239000001508 potassium citrate Substances 0.000 description 1
- 229960002635 potassium citrate Drugs 0.000 description 1
- QEEAPRPFLLJWCF-UHFFFAOYSA-K potassium citrate (anhydrous) Chemical compound [K+].[K+].[K+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O QEEAPRPFLLJWCF-UHFFFAOYSA-K 0.000 description 1
- 235000011082 potassium citrates Nutrition 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 235000013772 propylene glycol Nutrition 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- DAJSVUQLFFJUSX-UHFFFAOYSA-M sodium;dodecane-1-sulfonate Chemical compound [Na+].CCCCCCCCCCCCS([O-])(=O)=O DAJSVUQLFFJUSX-UHFFFAOYSA-M 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
Images
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
- A24D3/062—Use of materials for tobacco smoke filters characterised by structural features
- A24D3/063—Use of materials for tobacco smoke filters characterised by structural features of the fibers
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Silicon Compounds (AREA)
Abstract
The invention relates to a cigarette filter stick and a preparation method and application thereof, belonging to the field of tobacco. The cigarette filter stick provided by the invention has the advantage of no powder falling, so that the risk of inhalation is avoided for smokers, and the mouth feel of the smokers can be ensured. Moreover, the method for preparing the silicon-containing aerogel composite material provided by the invention can realize industrialization of the nano powder material in the application of the cigarette filter stick.
Description
Technical Field
The invention relates to the field of tobacco, in particular to a cigarette filter stick and a preparation method and application thereof.
Background
In recent years, with the sharp increase of the health problem of smoking, the tobacco industry in China is developing towards the direction of low tar and low harm, and the tobacco industry needs a brand new material to realize the tobacco industry. The method is characterized in that a nano material with an adsorption function is added into a cigarette filter stick, so that the harm of harmful substances in smoke to smokers can be reduced, and the taste of the cigarette filter stick is not lost.
However, the nano powder material is easy to enter the mouth of a smoker along with smoke after being added into the cigarette filter stick, so that a new potential safety hazard is caused, and meanwhile, the nano powder material is difficult to realize industrialization, so that the application of the nano powder material in the cigarette filter stick is severely restricted.
CN102423132A discloses a plant polysaccharide cigarette filter tip and its preparation method, the filter tip prepared by the method can reduce the content of tar and nicotine, but generates a large amount of bubbles during the preparation process. The existence of a large amount of bubbles can generate local effect, influence the normal operation of reaction and cause the uneven structure and pore diameter of the formed material. Therefore, it is usually necessary to add a defoaming agent or to use defoaming equipment, resulting in a complicated process.
CN111974356A discloses a composite aerogel type cigarette filter tip material and a preparation method and application thereof, the method is to mix nano-cellulose suspension and nano-silica suspension evenly, then pre-freeze the mixture at low temperature and freeze-dry the mixture to obtain the composite material, although the material has strong adsorbability to tar, nicotine and other substances in smoke and does not fall off powder, the preparation period is long, the process is complex, the raw materials need to be ground for a plurality of times, and the freeze-drying period is long.
Therefore, there is a need for a cigarette filter rod that overcomes the above-mentioned drawbacks.
Disclosure of Invention
The invention aims to solve the problems that the nano powder material added into a cigarette filter stick in the prior art causes powder falling, has inhalation risk to smokers and is difficult to realize industrialization.
In order to achieve the above object, a first aspect of the present invention provides a cigarette filter rod comprising a first structure and a second structure, the first structure being formed from a silicon-containing aerogel composite material, the second structure being formed from tobacco fibres, one end of the first structure being connected to the second structure and the other end being connectable to a tobacco portion;
wherein, the silicon-containing aerogel composite material is formed by compounding silicon-containing aerogel and fibers, and the content weight ratio of the silicon-containing aerogel to the fibers is 1: 2-5, the density of the silicon-containing aerogel composite material is 48.9-70.1g/cm3The pore diameter is 500nm-1.0 μm, the porosity is 90% -93%, and the adsorption rate is 8.5-10.7 g/g.
A second aspect of the present invention provides a method of making a cigarette filter according to the first aspect, the method comprising:
cutting the silicon-containing aerogel composite material into filaments and then performing filter rod forming I to obtain a first structure; cutting tobacco fibers into filaments, and then performing filter rod forming II to obtain a second structure;
and connecting the first structure with the second structure and wrapping the first structure with cigarette paper to obtain the cigarette filter stick.
A third aspect of the invention provides the use of a cigarette filter according to the first aspect as hereinbefore described in the manufacture of a cigarette.
The invention has the beneficial effects that:
the cigarette filter stick provided by the invention has the advantage of no powder falling, so that the risk of inhalation is avoided for smokers, and the mouth feel of the smokers can be ensured. Moreover, the method for preparing the silicon-containing aerogel composite material provided by the invention realizes industrialization of the nano powder material in application of cigarette filter sticks.
Drawings
FIG. 1 is an exemplary illustration of a cigarette made using the cigarette filter rod in a preferred embodiment provided by the present invention;
figure 2 is a cigarette filter rod strip according to the preferred embodiment 1 of the present invention.
In the figure, 1-second structure 2-first structure 3-tobacco portion.
Detailed Description
The endpoints of the ranges and any values disclosed herein are not limited to the precise range or value, and such ranges or values should be understood to encompass values close to those ranges or values. For ranges of values, between the endpoints of each of the ranges and the individual points, and between the individual points may be combined with each other to give one or more new ranges of values, and these ranges of values should be considered as specifically disclosed herein.
In the description of the embodiments of the present application, it should be noted that the term "connected" is to be understood broadly and may be, for example, fixedly connected, detachably connected, or integrally connected, unless explicitly stated or limited otherwise; may be a mechanical connection; the two structures can be directly connected or indirectly connected through an intermediate medium, and the two structures can be communicated with each other. Specific meanings of the above terms in the embodiments of the present application can be understood in specific cases by those of ordinary skill in the art.
As mentioned above, a first aspect of the invention provides a cigarette filter rod comprising a first structure and a second structure, the first structure being formed from a silicon-containing aerogel composite material, the second structure being formed from tobacco fibres, one end of the first structure being connected to the second structure and the other end being connectable to a tobacco portion;
wherein, the silicon-containing aerogel composite material is formed by compounding silicon-containing aerogel and fibers, and the content weight ratio of the silicon-containing aerogel to the fibers is 1: 2-5, the density of the silicon-containing aerogel composite material is 48.9-70.1g/cm3The pore diameter is 500nm-1.0 μm, the porosity is 90% -93%, and the adsorption rate is 8.5-10.7 g/g.
The present invention is illustrated with reference to fig. 1. Fig. 1 is an exemplary diagram of a cigarette prepared by using a cigarette filter stick in a preferred embodiment provided by the invention, and as shown in fig. 1, the cigarette filter stick provided by the invention comprises a first structure 2 and a second structure 1, wherein one end of the first structure 2 is connected with the second structure 1, and the other end of the first structure can be connected with a tobacco part 3.
In the present invention, the adsorption rate is a ratio of the mass of a substance adsorbed when a material having an adsorption capacity per unit mass reaches an adsorption equilibrium to the mass of the material itself.
In the invention, the porosity is the percentage of the volume of the internal pores of the porous material in the total volume of the porous material, and the porosity can indicate the number of the pores of the porous material.
According to a preferred embodiment, the method for preparing the silicon-containing aerogel composite comprises:
in the presence of a solvent I, carrying out a first reaction on a silicon source I, an acidic catalyst I and a surfactant I to obtain silica sol I; in the presence of a solvent II, carrying out a second reaction on a silicon source II, an acid catalyst II and a surfactant II to obtain silica sol II; in the presence of a solvent III, carrying out a third reaction on a silicon source III, an acidic catalyst III and a surfactant III to obtain silica sol III;
carrying out a fourth reaction on the silica sol I, the silica sol II and the silica sol III with a pore size control agent, and adjusting the pH value to 8.0-10.0 by using an alkaline catalyst to obtain a first mixture;
impregnating and mixing fibers with the first mixture to obtain a second mixture, and mixing the second mixture with alcoholContacting with a solvent to age and dry sequentially to obtain the silicon-containing aerogel composite material; the drying is CO2Supercritical drying;
wherein the silicon source I is selected from at least one of silicate ester, the silicon source II is selected from at least one of alkyl trialkoxysilane, and the silicon source III is selected from at least one of dialkyl dialkoxysilane.
The present inventors have found that the silica-containing aerogel composites prepared using the preferred embodiments described above have better processability and higher porosity.
In the present invention, it is preferable that the "alkyl group" in the alkyltrialkoxysilane means an alkyl group having a total number of carbon atoms of 1 to 10 in the alkyl group, and the alkyl group in the dialkyldialkoxysilane means an alkyl group having a total number of carbon atoms of 1 to 10 in the alkyl group, including straight-chain alkyl groups and branched-chain alkyl groups. Integers from 1 to 10 include 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10. Illustrative may be methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, tert-butyl, n-pentyl, isopentyl, n-hexyl, and the like.
In the present invention, preferably, the alkoxy group in the alkyltrialkoxysilane means an alkyl group having a total number of carbon atoms of 1 to 10 in the alkoxy group, and the alkoxy group in the dialkyldialkoxysilane means an alkyl group having a total number of carbon atoms of 1 to 10 in the alkoxy group, including a linear alkoxy group and a branched alkoxy group. Integers from 1 to 10 include 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10. Illustrative may be methoxy, ethoxy, n-propoxy, isopropoxy, n-butoxy, isobutoxy, t-butoxy, n-pentoxy, isopentoxy, n-hexoxy, and the like.
Preferably, the solvent I, the solvent II and the solvent III are each independently selected from at least one of methanol, ethanol, n-butanol, isopropanol.
Preferably, the acidic catalyst I, the acidic catalyst II and the acidic catalyst III are each independently selected from at least one of hydrochloric acid, oxalic acid, hydrofluoric acid, glacial acetic acid.
Preferably, the surfactant I, the surfactant II and the surfactant III are each independently selected from at least one of an anionic surfactant, a cationic surfactant and an amphoteric surfactant.
More preferably, the surfactant I, the surfactant II and the surfactant III are each independently selected from at least one of cetyltrimethylammonium bromide (CTAB), sodium dodecylsulphonate, poloxamer.
Preferably, the silicon source I is at least one selected from the group consisting of methyl orthosilicate, ethyl orthosilicate, butyl orthosilicate, methyl polysilicate, ethyl polysilicate, and butyl polysilicate.
Preferably, the silicon source II is selected from at least one of methyltrimethoxysilane, methyltriethoxysilane, ethyltrimethoxysilane, and ethyltriethoxysilane.
Preferably, the silicon source III is selected from at least one of dimethyldimethoxysilane, dimethyldiethoxysilane, diethyldimethoxysilane, diethyldiethoxysilane.
Preferably, the step of CO2 supercritical drying comprises: discharging at least part of the alcohol solvent every 10-30min at the temperature of 35-45 ℃ and the pressure of 10-16 MPa until no alcohol solvent is discharged, and performing pressure relief treatment, wherein the pressure relief treatment conditions meet: the pressure was reduced to 0 over a period of not more than 2 h. The inventors found that the preferred case has higher drying efficiency, and the prepared silicon-containing aerogel composite material has smaller shrinkage and better elastic property.
According to a preferred embodiment, the conditions of the first, second and third reactions are at least such that: the reaction temperature is 20-30 ℃ and the reaction time is 5-30 min.
According to another preferred embodiment, the silicon source I and the solvent I, the acidic catalyst I and the surfactant I are used in a weight ratio of 1: 3-15: 14-16: 0.1-0.3.
Preferably, the silicon source II, the solvent II, the acidic catalyst II and the surfactant II are used in a weight ratio of 1: 0.7-15: 2.0-12: 0.05-0.3.
Preferably, the weight ratio of the silicon source III to the solvent III, the acidic catalyst III and the surfactant III is 1: 1-30: 2.5-15: 0.05-0.6.
Preferably, the weight ratio of the silica sol I, the silica sol II, the silica sol III and the pore size controlling agent is 1: 1-4: 0.5-3: 0.01-3. The inventors have found that the preferred case produces a silicon-containing aerogel composite having better processability and higher porosity.
Preferably, the pore size controlling agent is at least one selected from the group consisting of N, N-diethylformamide and N, N-dimethylformamide.
Preferably, the basic catalyst is selected from at least one of NaOH, NaHCO3, and ammonia.
Preferably, the conditions of the fourth reaction at least satisfy: the reaction temperature is 20-30 ℃, and the reaction time is 10-60 min.
Preferably, the fiber is at least one selected from the group consisting of acetate fiber, lactate fiber, polyimide fiber, polypropylene fiber, and meltblown.
Preferably, the alcohol solvent is selected from at least one of methanol, ethanol, n-butanol, and isopropanol.
Preferably, the conditions of the impregnation mixing at least satisfy: the impregnation mixing temperature is 20-30 deg.C, and the impregnation mixing time is 10-60 min.
Preferably, the aging condition at least satisfies: the aging temperature is 20-65 ℃, and the aging time is 16-48 h.
Preferably, the fibers for cigarettes are at least one selected from acetate fibers, lactic acid fibers, polypropylene fibers and polyimide fibers.
Preferably, the length ratio of the second structure to the first structure is 1: 0.5-1.2. The inventors of the present invention found that the length ratio of the second structure to the first structure was 1: when the concentration is 0.5-1.2, the prepared cigarette filter stick has better adsorption capacity.
As mentioned above, a second aspect of the present invention provides a method of making a cigarette filter rod according to the first aspect, the method comprising:
cutting the silicon-containing aerogel composite material into filaments and then performing filter rod forming I to obtain the first structure; cutting the tobacco fibers into filaments and then performing filter rod forming II to obtain the second structure;
and connecting the first structure with the second structure and wrapping the first structure with cigarette paper to obtain the cigarette filter stick.
Preferably, the filter plug wrap I is identical to the filter plug wrap II.
Forming a filter stick: cutting the silicon-containing aerogel composite material or the tobacco fibers into tows with fixed width, gathering, bundling and wrapping the cigarette paper by a filter rod forming machine to form continuous cylindrical strips, and cutting into fixed lengths to obtain the cigarette filter rod.
As mentioned above, a third aspect of the present invention provides the use of a cigarette filter rod according to the first aspect as hereinbefore described in the manufacture of a cigarette.
The room temperature in the present invention means 25. + -. 5 ℃ unless otherwise specified.
The invention will be described in detail below by way of examples:
in the following examples, the test methods of the related partial characteristic parameters are as follows:
the test method of the powder falling rate comprises the following steps: weighing a 10cm x 10cm sample of the silicon-containing aerogel composite material m0, placing the sample into a standard vibrating screen machine (model BZS-200, Changan group Co., Ltd.), taking out the sample after 2min, and weighing the mass m1 of the silicon-containing aerogel composite material sample after vibrating screen. The powder dropping rate is (m0-m1)/m0 is 100%.
Method for testing total particulate matter: the method for testing the total particulate matter of the cigarettes is specified in the total particulate matter and the tar by a smoking machine according to the routine analysis of GB/T19609-2004 cigarettes.
The tar yield test method comprises the following steps: the method for testing the tar content of the cigarettes is specified in the total particulate matter and the tar by a smoking machine according to the routine analysis of GB/T19609-2004 cigarettes. .
The method for testing the nicotine amount comprises the following steps: the method for testing the nicotine content of cigarette is specified in total particulate matter and tar by a smoking machine according to the routine analysis of GB/T19609-2004 cigarette.
Preparation example 1
1g of methyl orthosilicate (i.e. silicon source I), 14.9g of glacial acetic acid (i.e. acidic catalyst I) and 0.27g of cetyltrimethylammonium bromide (i.e. surfactant I) were mixed in 7.85g of methanol (i.e. solvent I) at room temperature and stirred for 30min (i.e. first reaction) to obtain silica sol I;
4g of methyltrimethoxysilane (i.e. silicon source II) was mixed with 11.17g of glacial acetic acid (i.e. acidic catalyst II) and 0.27g of cetyltrimethylammonium bromide (i.e. surfactant II) in 7.85g of methanol (i.e. solvent II) at room temperature and stirred for 30min (i.e. second reaction) to give silica sol II;
2.6g of dimethyldiethoxysilane (i.e. silicon source III) was mixed with 7.45g of glacial acetic acid (i.e. acidic catalyst III) and 0.27g of cetyltrimethylammonium bromide (i.e. surfactant III) in 7.85g of methanol (i.e. solvent III) at room temperature and stirred for 30min (i.e. third reaction) to give silica sol III;
mixing 5g of the silica sol I, 10g of the silica sol II and 10g of the silica sol III with 5g of N, N-dimethylformamide (i.e., a pore size control agent) at room temperature and stirring for 10min (i.e., a fourth reaction), standing, and adjusting the pH value to 9.0 with 5.0mol/L of ammonia water (i.e., a basic catalyst) to obtain a first mixture;
soaking and mixing 5g of cellulose acetate and 20g of the first mixture at room temperature for 35min, adding ethanol to ensure that the surface of the cellulose acetate is submerged, aging the cellulose acetate at 40 ℃ for 24h, then discharging the ethanol at 40 ℃ and 13MPa every 15min until no ethanol is discharged, and reducing the pressure to 0 within 2h to obtain the silicon-containing aerogel composite material C1.
Preparation example 2
This preparation was carried out using a similar procedure to example 1, except that: and replacing the equal weight of the methyl orthosilicate with the ethyl orthosilicate to obtain the silicon-containing aerogel composite material C2.
Preparation example 3
Mixing 1g of methyl polysilicate (i.e., silicon source I), 15g of hydrochloric acid (i.e., acidic catalyst I) and 0.2g of cetyltrimethylammonium bromide (i.e., surfactant I) in 9g of methanol (i.e., solvent I) at room temperature and stirring for 25min (i.e., first reaction) to obtain silica sol I;
mixing 1g of methyltriethoxysilane (i.e., silicon source II), 7g of glacial acetic acid (i.e., acidic catalyst II) and 0.2g of poloxamer (i.e., surfactant II) in 8g of n-butanol (i.e., solvent II) at room temperature and stirring for 20min (i.e., second reaction) to obtain silica sol II;
mixing 1g of dimethyldiethoxysilane (i.e., silicon source III) with 9g of oxalic acid (i.e., acidic catalyst III) and 0.35g of cetyltrimethylammonium bromide (i.e., surfactant III) in 15g of isopropanol (i.e., solvent III) at room temperature and stirring for 25min (i.e., a third reaction) to obtain silica sol III;
mixing 5g of the silica sol I, 10g of the silica sol II and 10g of the silica sol III with 7.5g of N, N-diethylformamide (i.e., a pore size control agent) at room temperature and stirring for 35min (i.e., a fourth reaction), standing, and adjusting the pH value to 9.0 with 5.0mol/L of ammonia (i.e., a basic catalyst) to obtain a first mixture;
soaking and mixing 5g of cellulose acetate and 20g of the first mixture at room temperature for 35min, adding ethanol to ensure that the surface of the cellulose acetate is submerged, aging the cellulose acetate at 40 ℃ for 32h, then discharging the ethanol at 40 ℃ and 13MPa every 15min until no ethanol is discharged, and reducing the pressure to 0 within 2h to obtain the silicon-containing aerogel composite material C3.
Preparation example 4
Mixing 1g of poly butyl silicate (namely silicon source I), 15g of glacial acetic acid (namely acidic catalyst I) and 0.2g of sodium dodecyl sulfate (namely surfactant I) in 6g of ethanol (namely solvent I) at room temperature, and stirring for 15min (namely a first reaction) to obtain silica sol I;
mixing 3g of methyltrimethoxysilane (i.e., silicon source II) with 10.5g of 1mol/L hydrochloric acid (i.e., acidic catalyst II) and 0.3g of cetyltrimethylammonium bromide (i.e., surfactant II) in 6g of ethanol (i.e., solvent II) at room temperature and stirring for 20min (i.e., second reaction) to obtain silica sol II;
mixing 2g of dimethyldiethoxysilane (i.e., silicon source III) with 8g of glacial acetic acid (i.e., acidic catalyst III) and 3g of cetyltrimethylammonium bromide (i.e., surfactant III) in 6g of methanol (i.e., solvent III) at room temperature and stirring for 15min (i.e., a third reaction) to obtain silica sol III;
mixing 5g of the silica sol I, 15g of the silica sol II and 7.5g of the silica sol III with 5g of N, N-dimethylformamide (i.e., a pore size controlling agent) at room temperature and stirring for 30min (i.e., a fourth reaction), standing, and adjusting the pH value to 9.0 with 6.5mol/L of ammonia water (i.e., a basic catalyst) to obtain a first mixture;
soaking and mixing 5g of lactic acid fiber and 20g of the first mixture at room temperature for 50min, adding methanol to ensure that the liquid surface is submerged in the lactic acid fiber, aging at 40 ℃ for 32h, then discharging the methanol at 30 ℃ and 16MPa every 10min until no methanol is discharged, and reducing the pressure to 0 within 2h to obtain the silicon-containing aerogel composite material C4.
Preparation example 5
Mixing 1g of polyethyl silicate (i.e., silicon source I), 14g of hydrochloric acid (i.e., acidic catalyst I) and 0.1g of cetyltrimethylammonium bromide (i.e., surfactant I) in 4g of methanol (i.e., solvent I) at room temperature and stirring for 10min (i.e., first reaction) to obtain silica sol I;
mixing 2g methyltrimethoxysilane (i.e., silicon source II) with 8g glacial acetic acid (i.e., acidic catalyst II) and 0.1g poloxamer (i.e., surfactant II) in 2g n-butanol (i.e., solvent II) at room temperature and stirring for 20min (i.e., second reaction) to obtain silica sol II;
mixing 3g of diethyldiethoxysilane (i.e., silicon source III) with 7.5g of oxalic acid (i.e., acidic catalyst III) and 0.9g of cetyltrimethylammonium bromide (i.e., surfactant III) in 15g of isopropanol (i.e., solvent III) at room temperature and stirring for 15min (i.e., a third reaction) to obtain silica sol III;
mixing 5g of the silica sol I, 5g of the silica sol II and 2.5g of the silica sol III with 0.5g of N, N-diethylformamide (i.e., a pore size control agent) at room temperature and stirring for 50min (i.e., a fourth reaction), standing, and adjusting the pH to 8.0 with 6.5mol/L of ammonia (i.e., a basic catalyst) to obtain a first mixture;
soaking and mixing 5g of polypropylene fibers and 15g of the first mixture at room temperature for 40min, adding ethanol to ensure that the polypropylene fibers are aged for 48h at 20 ℃ when the liquid level is over, then discharging the ethanol at 45 ℃ and 10MPa every 20min until no ethanol is discharged, and reducing the pressure to 0 within 2h to obtain the silicon-containing aerogel composite material C5.
Preparation example 6
Mixing 1g of methyl orthosilicate (i.e., silicon source I) with 16g of glacial acetic acid (i.e., acidic catalyst I) and 0.3g of cetyltrimethylammonium bromide (i.e., surfactant I) in 9g of butanol (i.e., solvent I) at room temperature and stirring for 15min (i.e., first reaction) to obtain silica sol I;
mixing 2g of methyltrimethoxysilane (i.e. silicon source II), 4g of hydrofluoric acid (i.e. acidic catalyst II) and 0.4g of sodium dodecyl sulfate (i.e. surfactant II) in 6g of methanol (i.e. solvent II) at room temperature and stirring for 10min (i.e. second reaction) to obtain silica sol II;
mixing 2g of dimethyldiethoxysilane (i.e., silicon source III) with 12g of glacial acetic acid (i.e., acidic catalyst III) and 0.1g of poloxamer (i.e., surfactant III) in 2g of ethanol (i.e., solvent III) at room temperature and stirring for 10min (i.e., a third reaction) to obtain silica sol III;
mixing 5g of the silica sol I, 20g of the silica sol II and 15g of the silica sol III with 10g of N, N-diethylformamide (i.e., a pore size control agent) at room temperature and stirring for 60min (i.e., a fourth reaction), standing, and adjusting the pH value to 10.0 with 6.5mol/L of ammonia (i.e., a basic catalyst) to obtain a first mixture;
soaking and mixing 5g of melt-blown cloth and 25g of the first mixture at room temperature for 60min, adding ethanol to ensure that the liquid surface is not covered by the melt-blown cloth, aging at 65 ℃ for 16h, then discharging the ethanol at 35 ℃ and 10MPa every 30min until no ethanol is discharged, and reducing the pressure to 0 within 2h to obtain the silicon-containing aerogel composite material C6.
Example 1
Cutting the silicon-containing aerogel composite material C1 into tows with the width of 1mm, and preparing the tows into a filter stick I (namely a first structure) by using a filter stick forming machine;
cutting the acetate fibers into tows with the width of 1mm, and preparing the tows into a filter stick II (namely a second structure) by using a filter stick forming machine;
connecting the first structure and the second structure through a filter stick forming machine and wrapping the first structure and the second structure with cigarette paper to obtain a cigarette filter stick B1 with the length of 30 mm;
wherein, the length ratio of the second structure to the first structure is 1: 0.8.
example 2
Cutting the silicon-containing aerogel composite material C2 into tows with the width of 1mm, and preparing the tows into a filter stick I (namely a first structure) by using a filter stick forming machine;
cutting the acetate fibers into tows with the width of 1mm, and preparing the tows into a filter stick II (namely a second structure) by using a filter stick forming machine;
connecting the first structure and the second structure through a filter stick forming machine and wrapping the first structure and the second structure with cigarette paper to obtain a cigarette filter stick B2 with the length of 30 mm;
wherein, the length ratio of the second structure to the first structure is 1: 0.8.
example 3
Cutting the silicon-containing aerogel composite material C3 into tows with the width of 1mm, and preparing the tows into a filter stick I (namely a first structure) by using a filter stick forming machine;
cutting the acetate fibers into tows with the width of 1mm, and preparing the tows into a filter stick II (namely a second structure) by using a filter stick forming machine;
connecting the first structure and the second structure through a filter stick forming machine and wrapping the first structure and the second structure with cigarette paper to obtain a cigarette filter stick B3 with the length of 30 mm;
wherein, the length ratio of the second structure to the first structure is 1: 0.8.
example 4
Cutting the silicon-containing aerogel composite material C4 into tows with the width of 1mm, and preparing the tows into a filter stick I (namely a first structure) by using a filter stick forming machine;
cutting the acetate fibers into tows with the width of 1mm, and preparing the tows into a filter stick II (namely a second structure) by using a filter stick forming machine;
connecting the first structure and the second structure through a filter stick forming machine, and wrapping the first structure and the second structure with cigarette paper to obtain a cigarette filter stick B4 with the length of 30 mm;
wherein, the length ratio of the second structure to the first structure is 1: 0.8.
example 5
Cutting the silicon-containing aerogel composite material C5 into tows with the width of 1mm, and preparing the tows into a filter stick I (namely a first structure) by using a filter stick forming machine;
cutting the acetate fibers into tows with the width of 1mm, and preparing the tows into a filter stick II (namely a second structure) by using a filter stick forming machine;
connecting the first structure and the second structure through a filter stick forming machine, and wrapping the first structure and the second structure with cigarette paper to obtain a cigarette filter stick B5 with the length of 30 mm;
wherein, the length ratio of the second structure to the first structure is 1: 0.8.
example 6
Cutting the silicon-containing aerogel composite material C6 into tows with the width of 1mm, and preparing the tows into a filter stick I (namely a first structure) by using a filter stick forming machine;
cutting the acetate fibers into tows with the width of 1mm, and preparing the tows into a filter stick II (namely a second structure) by using a filter stick forming machine;
connecting the first structure and the second structure through a filter stick forming machine, and wrapping the first structure and the second structure with cigarette paper to obtain a cigarette filter stick B6 with the length of 30 mm;
wherein, the length ratio of the second structure to the first structure is 1: 0.8.
example 7
This example was carried out using a procedure similar to that of example 1, except that: the length ratio of the second structure to the first structure is 1: 0.5, obtaining a cigarette filter stick B7.
Example 8
This example was carried out using a procedure similar to that of example 1, except that: the length ratio of the second structure to the first structure is 1: 1.2, obtaining a cigarette filter stick B8.
Comparative example 1
This comparative example was carried out using a procedure similar to that of example 1, except that: and replacing the first structure with a second structure with the same length to obtain the cigarette filter stick DB 1.
Comparative example 2
This comparative example was carried out using a procedure similar to that of example 1, except that: the length ratio of the second structure to the first structure is 1: and 2, obtaining the cigarette filter stick DB 2.
Test example
The cigarette filter sticks prepared in the examples and the comparative examples and tobacco are made into cigarettes so as to detect total particulate matters, tar content and nicotine content of main stream smoke of the cigarettes, and the results are shown in table 1. (the preparation method of the cigarette refers to the method described in example 1 in CN107536101A, and specifically comprises the following steps:
1) 50g of tobacco leaves and 100g of tobacco stems purchased from tobacco industry Limited liability company in Yunnan are crushed into 100-mesh and 120-mesh tobacco powder at 40 ℃;
2) mixing the tobacco powder with sodium bicarbonate, potassium citrate, 10% white latex solution for tobacco, propylene glycol, tobacco essence and the like according to the mass ratio of 100: 1: 0.5: 5: 0.2: 0.05, granulating and drying in one step to obtain tobacco particles, and removing the particles smaller than 70 meshes by air separation;
3) spraying polyethylene hot melt adhesive on the surfaces of the tobacco particles qualified by winnowing, pressing the tobacco particles into the tobacco particles from one end of a cylindrical die with the diameter of 7.5mm by using a continuous feeding device under the condition of heat preservation, solidifying and rapidly cooling the tobacco particles, and extruding the tobacco particles from the other end to obtain tobacco particle round bars with the density of 0.3 g/mL;
4) and (3) wrapping the extruded tobacco round bar by using cigarette paper, cutting the tobacco round bar into 59mm, and connecting the tobacco round bar with a cigarette filter stick through a tipping paper to prepare the cigarette. )
The cigarettes prepared BY the cigarette filter sticks B1, B2, B3, B4, B5, B6, B7, B8, DB1 and DB2 are respectively marked as BY1, BY2, BY3, BY4, BY5, BY6, BY7, BY8, DBY1 and DBY 2.
Figure 2 is a cigarette filter rod strip according to the preferred embodiment 1 of the present invention. It can be seen from fig. 2 that the cigarette filter stick made of the composite aerogel fiber material containing silicon has full forming degree and moderate stiffness, and meets the requirements of the cigarette filter stick.
TABLE 1
| Cigarette numbering | Total particulate matter (mg) | Amount of tar (mg) | Amount of nicotine (mg) | Powder falling rate (%) |
| BY1 | 7.34 | 6.0 | 0.51 | 0.4 |
| BY2 | 8.06 | 6.4 | 0.56 | 0.5 |
| BY3 | 8.08 | 6.6 | 0.60 | 0.5 |
| BY4 | 8.12 | 6.3 | 0.62 | 0.6 |
| BY5 | 8.07 | 6.4 | 0.60 | 0.5 |
| BY6 | 8.05 | 6.3 | 0.61 | 0.5 |
| BY7 | 8.11 | 6.6 | 0.63 | 0.6 |
| BY8 | 8.32 | 6.9 | 0.66 | 0.6 |
| DBY1 | 12.43 | 10.4 | 0.94 | - |
| DBY2 | 10.70 | 9.3 | 0.75 | 0.7 |
The results in table 1 show that the cigarette filter stick provided by the invention has the advantage of no powder falling, so that no inhalation risk is caused to smokers, and meanwhile, the cigarette filter stick provided by the invention has excellent adsorption effect on total particulate matters, tar and nicotine in smoke.
The preferred embodiments of the present invention have been described above in detail, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, many simple modifications can be made to the technical solution of the invention, including combinations of various technical features in any other suitable way, and these simple modifications and combinations should also be regarded as the disclosure of the invention, and all fall within the scope of the invention.
Claims (10)
1. A cigarette filter stick is characterized by comprising a first structure and a second structure, wherein the first structure is formed by a silicon-containing aerogel composite material, the second structure is formed by cigarette fibers, one end of the first structure is connected with the second structure, and the other end of the first structure can be connected with a tobacco part;
wherein, the silicon-containing aerogel composite material is formed by compounding silicon-containing aerogel and fibers, and the content weight ratio of the silicon-containing aerogel to the fibers is 1: 2-5, the density of the silicon-containing aerogel composite material is 48.9-70.1g/cm3The pore diameter is 500nm-1.0 μm, the porosity is 90% -93%, and the adsorption rate is 8.5-10.7 g/g.
2. The cigarette filter stick according to claim 1, wherein the preparation method of the silicon-containing aerogel composite material comprises the following steps:
in the presence of a solvent I, carrying out a first reaction on a silicon source I, an acidic catalyst I and a surfactant I to obtain silica sol I; in the presence of a solvent II, carrying out a second reaction on a silicon source II, an acid catalyst II and a surfactant II to obtain silica sol II; in the presence of a solvent III, carrying out a third reaction on a silicon source III, an acidic catalyst III and a surfactant III to obtain silica sol III;
carrying out a fourth reaction on the silica sol I, the silica sol II and the silica sol III with a pore size control agent, and adjusting the pH value to 8.0-10.0 by using an alkaline catalyst to obtain a first mixture;
impregnating and mixing the fiber and the first mixtureTo obtain a second mixture, and contacting the second mixture with an alcohol solvent to sequentially age and dry to obtain the silicon-containing aerogel composite material; the drying is CO2Supercritical drying;
the silicon source I is selected from at least one of silicate ester, the silicon source II is selected from at least one of alkyl trialkoxysilane, and the silicon source III is selected from at least one of dialkyl dialkoxysilane.
3. The cigarette filter stick according to claim 2, wherein the silicon source I is at least one selected from the group consisting of methyl orthosilicate, ethyl orthosilicate, butyl orthosilicate, methyl polysilicate, ethyl polysilicate and butyl polysilicate;
the silicon source II is at least one selected from methyltrimethoxysilane, methyltriethoxysilane, ethyltrimethoxysilane and ethyltriethoxysilane;
the silicon source III is at least one selected from dimethyl dimethoxy silane, dimethyl diethoxy silane, diethyl dimethoxy silane and diethyl diethoxy silane.
4. A cigarette filter rod according to claim 2 or 3 wherein the CO is2The supercritical drying step comprises: discharging at least part of the alcohol solvent every 10-30min at the temperature of 35-45 ℃ and the pressure of 10-16 MPa until no alcohol solvent is discharged, and performing pressure relief treatment under the conditions that: the pressure was reduced to atmospheric pressure over a period of not more than 2 hours.
5. The cigarette filter stick according to any one of claims 2-4, wherein the silicon source I, the solvent I, the acidic catalyst I and the surfactant I are used in an amount by weight ratio of 1: 3-15: 14-16: 0.1-0.3;
the weight ratio of the silicon source II to the solvent II, the acidic catalyst II and the surfactant II is 1: 0.7-15: 2.0-12: 0.05-0.3;
the weight ratio of the silicon source III to the solvent III, the acidic catalyst III and the surfactant III is 1: 1-30: 2.5-15: 0.05-0.6.
6. The cigarette filter stick according to any one of claims 2-4, wherein the silica sol I, the silica sol II, the silica sol III and the pore size control agent are used in an amount by weight ratio of 1: 1-4: 0.5-3: 0.01-3;
the fiber is at least one selected from acetate fiber, lactic acid fiber, polyimide fiber, polypropylene fiber and melt-blown cloth.
7. The cigarette filter according to any one of claims 2-4, wherein the cigarette fibers are selected from at least one of acetate fibers, lactate fibers, polypropylene fibers and polyimide fibers.
8. A cigarette filter rod according to any one of claims 2 to 7 wherein the ratio of the length of the second structure to the first structure is 1: 0.5-1.2.
9. A method of making a cigarette filter according to any one of claims 1 to 8 comprising:
cutting the silicon-containing aerogel composite material into filaments and then performing filter rod forming I to obtain a first structure; cutting tobacco fibers into filaments, and then performing filter rod forming II to obtain a second structure;
and connecting the first structure with the second structure and wrapping the first structure with cigarette paper to obtain the cigarette filter stick.
10. Use of the cigarette filter rod according to any one of claims 1 to 8 in the manufacture of a cigarette.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010004735A1 (en) * | 2008-07-08 | 2010-01-14 | ダイセル化学工業株式会社 | Filter material made from porous silica and cigarette filter using same |
| CN111040235A (en) * | 2019-12-20 | 2020-04-21 | 爱彼爱和新材料有限公司 | Aerogel composite material and preparation method thereof |
| CN111285623A (en) * | 2020-04-14 | 2020-06-16 | 河南爱彼爱和新材料有限公司 | Composite aerogel fiber free of powder falling and preparation process thereof |
| CN111908478A (en) * | 2020-08-10 | 2020-11-10 | 西南大学 | Preparation method of flexible silica aerogel |
-
2021
- 2021-08-13 CN CN202110932106.5A patent/CN113841926B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010004735A1 (en) * | 2008-07-08 | 2010-01-14 | ダイセル化学工業株式会社 | Filter material made from porous silica and cigarette filter using same |
| CN111040235A (en) * | 2019-12-20 | 2020-04-21 | 爱彼爱和新材料有限公司 | Aerogel composite material and preparation method thereof |
| CN111285623A (en) * | 2020-04-14 | 2020-06-16 | 河南爱彼爱和新材料有限公司 | Composite aerogel fiber free of powder falling and preparation process thereof |
| CN111908478A (en) * | 2020-08-10 | 2020-11-10 | 西南大学 | Preparation method of flexible silica aerogel |
Non-Patent Citations (2)
| Title |
|---|
| CHAO YAO 等: ""Microstructure and Adsorption Properties of MTMS / TEOS Co-precursor Silica Aerogels Dried at Ambient Pressure"", 《JOURNAL OF NON-CRYSTALLINE SOLIDS》, vol. 562, 9 March 2021 (2021-03-09), pages 1 - 6, XP086537244, DOI: 10.1016/j.jnoncrysol.2021.120778 * |
| 陈永全: ""光产酸制备二氧化硅气凝胶及其性能研究"", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》, no. 3, 15 March 2018 (2018-03-15), pages 015 - 112 * |
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