CN115651297A - High-airtightness isotope sampling bottle and preparation method and application thereof - Google Patents
High-airtightness isotope sampling bottle and preparation method and application thereof Download PDFInfo
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- CN115651297A CN115651297A CN202211307664.3A CN202211307664A CN115651297A CN 115651297 A CN115651297 A CN 115651297A CN 202211307664 A CN202211307664 A CN 202211307664A CN 115651297 A CN115651297 A CN 115651297A
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- 238000005070 sampling Methods 0.000 title claims abstract description 63
- 238000002360 preparation method Methods 0.000 title claims abstract description 24
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims abstract description 41
- 229910052901 montmorillonite Inorganic materials 0.000 claims abstract description 39
- 239000002994 raw material Substances 0.000 claims abstract description 24
- 229920001903 high density polyethylene Polymers 0.000 claims abstract description 15
- 239000004700 high-density polyethylene Substances 0.000 claims abstract description 15
- 239000002105 nanoparticle Substances 0.000 claims abstract description 12
- 239000000203 mixture Substances 0.000 claims abstract description 10
- 229920002292 Nylon 6 Polymers 0.000 claims abstract description 6
- 239000003963 antioxidant agent Substances 0.000 claims description 24
- 230000003078 antioxidant effect Effects 0.000 claims description 24
- 229920006124 polyolefin elastomer Polymers 0.000 claims description 17
- 239000004014 plasticizer Substances 0.000 claims description 16
- ZFOZVQLOBQUTQQ-UHFFFAOYSA-N Tributyl citrate Chemical group CCCCOC(=O)CC(O)(C(=O)OCCCC)CC(=O)OCCCC ZFOZVQLOBQUTQQ-UHFFFAOYSA-N 0.000 claims description 14
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 13
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 12
- 229910052799 carbon Inorganic materials 0.000 claims description 11
- 238000001746 injection moulding Methods 0.000 claims description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 10
- 239000004677 Nylon Substances 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 10
- 229920001778 nylon Polymers 0.000 claims description 10
- 239000004952 Polyamide Substances 0.000 claims description 9
- 229960000892 attapulgite Drugs 0.000 claims description 9
- 239000000945 filler Substances 0.000 claims description 9
- 229910052625 palygorskite Inorganic materials 0.000 claims description 9
- 229920002647 polyamide Polymers 0.000 claims description 9
- 239000004743 Polypropylene Substances 0.000 claims description 8
- 239000002131 composite material Substances 0.000 claims description 8
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims description 8
- -1 polypropylene Polymers 0.000 claims description 8
- QZCLKYGREBVARF-UHFFFAOYSA-N Acetyl tributyl citrate Chemical compound CCCCOC(=O)CC(C(=O)OCCCC)(OC(C)=O)CC(=O)OCCCC QZCLKYGREBVARF-UHFFFAOYSA-N 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 229920001155 polypropylene Polymers 0.000 claims description 7
- 239000011787 zinc oxide Substances 0.000 claims description 7
- JKIJEFPNVSHHEI-UHFFFAOYSA-N Phenol, 2,4-bis(1,1-dimethylethyl)-, phosphite (3:1) Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OP(OC=1C(=CC(=CC=1)C(C)(C)C)C(C)(C)C)OC1=CC=C(C(C)(C)C)C=C1C(C)(C)C JKIJEFPNVSHHEI-UHFFFAOYSA-N 0.000 claims description 6
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 claims description 6
- XQSBLCWFZRTIEO-UHFFFAOYSA-N hexadecan-1-amine;hydrobromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[NH3+] XQSBLCWFZRTIEO-UHFFFAOYSA-N 0.000 claims description 6
- 239000000741 silica gel Substances 0.000 claims description 6
- 229910002027 silica gel Inorganic materials 0.000 claims description 6
- YHMYGUUIMTVXNW-UHFFFAOYSA-N 1,3-dihydrobenzimidazole-2-thione Chemical compound C1=CC=C2NC(S)=NC2=C1 YHMYGUUIMTVXNW-UHFFFAOYSA-N 0.000 claims description 5
- 239000005543 nano-size silicon particle Substances 0.000 claims description 5
- 235000012239 silicon dioxide Nutrition 0.000 claims description 5
- XJWSAJYUBXQQDR-UHFFFAOYSA-M dodecyltrimethylammonium bromide Chemical compound [Br-].CCCCCCCCCCCC[N+](C)(C)C XJWSAJYUBXQQDR-UHFFFAOYSA-M 0.000 claims description 4
- ZWGTVKDEOPDFGW-UHFFFAOYSA-N hexadecylazanium;chloride Chemical compound [Cl-].CCCCCCCCCCCCCCCC[NH3+] ZWGTVKDEOPDFGW-UHFFFAOYSA-N 0.000 claims description 4
- 238000004458 analytical method Methods 0.000 claims description 3
- 238000002485 combustion reaction Methods 0.000 claims description 3
- 238000010102 injection blow moulding Methods 0.000 claims description 3
- 230000002285 radioactive effect Effects 0.000 claims description 3
- 230000004888 barrier function Effects 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 abstract description 7
- 239000000463 material Substances 0.000 abstract description 6
- 238000012360 testing method Methods 0.000 abstract description 5
- 230000000844 anti-bacterial effect Effects 0.000 abstract description 2
- 230000003993 interaction Effects 0.000 abstract description 2
- 229920003023 plastic Polymers 0.000 abstract description 2
- 239000004033 plastic Substances 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- 239000000243 solution Substances 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 8
- 239000002245 particle Substances 0.000 description 7
- 238000007789 sealing Methods 0.000 description 7
- 239000004322 Butylated hydroxytoluene Substances 0.000 description 6
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 description 6
- 229940095259 butylated hydroxytoluene Drugs 0.000 description 6
- 235000010354 butylated hydroxytoluene Nutrition 0.000 description 6
- 239000003153 chemical reaction reagent Substances 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 238000009830 intercalation Methods 0.000 description 4
- 230000002687 intercalation Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000002244 precipitate Substances 0.000 description 4
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 238000000071 blow moulding Methods 0.000 description 3
- 239000000138 intercalating agent Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
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- 238000011056 performance test Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 229910001961 silver nitrate Inorganic materials 0.000 description 2
- 150000003385 sodium Chemical class 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000006228 supernatant Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
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- 238000009413 insulation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
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- 239000000047 product Substances 0.000 description 1
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- 239000003566 sealing material Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
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- 239000007787 solid Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Abstract
The invention belongs to the technical field of sealed plastic bottles, and discloses a high-sealability isotope sampling bottle as well as a preparation method and application thereof. The sampling bottle comprises a bottle body, a bottle cap and a gasket, wherein the gasket is arranged in the bottle cap. The invention realizes high air-proof and airtight performance by optimizing the raw material composition of the bottle body and setting the thickness of the bottle body to be 2-4 mm, so that the sampling bottle can meet the requirements of 14 C testing the requirements of sampling, sample preparation and testing in the year technology, and can also be matched with the used equipment. The sampling bottle takes high-density polyethylene as a main material, nylon 6 and intercalated montmorillonite are compounded to improve the gas barrier property, and the intercalated group of the intercalated montmorillonite has certain interaction with the high-density polyethylene, so that the intercalated montmorillonite is uniformly dispersed in the high-density polyethylene, and the barrier property is improved through the lamellar structure of the intercalated montmorillonite. The use of the nano particles not only improves the mechanical property of the sampling bottle, but also ensures that the sampling bottle has a certain antibacterial function, so that the sample can be stored in the bottle for a long time.
Description
Technical Field
The invention relates to the technical field of sealed plastic bottles, in particular to a high-sealability isotope sampling bottle and a preparation method and application thereof.
Background
14 The C year measuring method is gradually applied to geological fourth age, underground water and other related researches and surveys since the 80 th century. With the development of the technology, the technology is developed, 14 the C year measuring method gradually forms a series of mature technologies, and the collected samples to be measured are required to be isolated relative to the air no matter sampling, sample preparation and measurement are carried out, so that CO in the air is avoided 2 The contamination of the sample bottle or the sample bottle is required to have high gas barrier property and sealing property. Moreover, in the actual sampling and measuring operation, the sampling bottle is usually used for sampling and then is continuously used for being matched with the fourteen-carbon vacuum sample preparation system for subsequent vacuumizing sample preparation and detection, and the sample bottle is not replaced to eliminate the influence of carbon dioxide to the maximum extent. Therefore, the sampling bottle is required not only to be airtight but also not to be deformed by vacuum pumping.
At present, the common chemical reagent storing PE, PP,Although the medicine bottle made of materials such as PET has certain sealing performance, the chemical reagent still has the phenomena of caking or moisture after being stored for a long time, and the use requirements of some solid or liquid reagents with higher sealing requirements cannot be met. On the basis of the above, there are researches on improving the structure of a sample bottle, for example, patent 201710553929.0 discloses a sealed bottle for storing chemical reagents, the main structure of which comprises a bottle body, one or more containers with certain volumes, a conduit passing through the inner cavity of the container and the sealed end of the container, a sealing cap mounted on the top of the conduit, and a sealing material between the sealing cap and the inner cavity of the container. Although the sealing bottle has good tightness, a certain time is needed for resealing after opening, and the bottle mouth is irregular and can not be matched with the bottle 14 And C, the equipment in the year measuring technology is well matched.
Therefore, a sample bottle pair which has good sealing performance, can store isotope samples and is not deformed after being vacuumized is developed 14 The development of the C year measuring technology has important significance.
Disclosure of Invention
The invention aims to provide a high-airtightness isotope sampling bottle and a preparation method and application thereof, and solves the technical problems of the existing sample bottle.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a high-airtightness isotope sampling bottle, which comprises a bottle body, a bottle cap and a gasket, wherein the gasket is arranged in the bottle cap;
the body of the sampling bottle is prepared from the following raw materials in parts by mass:
60-80 parts of high-density polyethylene, 10-30 parts of polyamide, 1-15 parts of polyolefin elastomer, 5-15 parts of filler, 1-10 parts of compatilizer, 1-5 parts of plasticizer, 3-8 parts of antioxidant and 10-15 parts of nano particles.
Preferably, in one of the above highly closed isotope sampling bottles, the polyamide is nylon 6; the polyolefin elastomer is POE.
Preferably, in the high-tightness isotope sampling bottle, the filler is a mixture of intercalated montmorillonite and attapulgite; the mass ratio of the intercalated montmorillonite to the attapulgite is 3-5: 1 to 3.
Preferably, in the high-airtightness isotope sampling bottle, the intercalated montmorillonite is one of intercalated modified sodium-based montmorillonite selected from cetyl ammonium bromide, cetyl ammonium chloride or dodecyl trimethyl ammonium bromide.
Preferably, in the high-sealability isotope sampling bottle, the compatilizer is HDPE-g-MAH; the plasticizer is tributyl citrate or acetyl tributyl citrate; the antioxidant is one or more of antioxidant 1010, antioxidant 168, antioxidant MB and antioxidant BHT; the nano particles are any two of nano titanium dioxide, nano silicon dioxide and nano zinc oxide.
Preferably, in the highly-closed isotope sampling bottle, the thickness of the bottle body is 2-4 mm.
Preferably, in the isotope sampling bottle with high airtightness, the bottle cap is prepared from the following raw materials in parts by mass: 60-80 parts of polypropylene, 620-30 parts of nylon, 1-10 parts of intercalated montmorillonite, 1-10 parts of compatilizer, 1-10 parts of plasticizer and 1-5 parts of antioxidant;
the gasket is made of a polytetrafluoroethylene-silica gel composite gasket.
The invention also provides a preparation method of the high-airtightness isotope sampling bottle, and the preparation method of the bottle body comprises the following steps: mixing the raw materials of the bottle body, and then sequentially performing injection molding, blow molding and demolding to obtain the bottle body of the high-airtightness isotope sampling bottle;
the preparation method of the bottle cap comprises the following steps: and extruding, granulating and injection molding the raw material of the bottle cap to obtain the bottle cap of the high-tightness isotope sampling bottle.
The invention also provides application of the high-tightness isotope sampling bottle in an underground water dissolved inorganic carbon radioactive analysis sample collection device, a liquid flash method carbon fourteen sample acidolysis sample preparation device or an organic carbon high-temperature closed combustion system.
Through the technical scheme, compared with the prior art, the invention has the following beneficial effects:
(1) The invention realizes high air-proof and airtight performance by optimizing the raw material composition of the bottle body of the sampling bottle and setting the thickness of the bottle body to be 2-4 mm, so that the sampling bottle can meet the requirements 14 C testing the requirements of sampling, sample preparation and testing in the year technology, and can also be matched with the used equipment.
(2) The sampling bottle of the invention takes high density polyethylene as a main material, and is compounded with nylon 6 and intercalated montmorillonite to improve the gas barrier property, the intercalated group of the intercalated montmorillonite has certain interaction with the high density polyethylene, so that the intercalated montmorillonite is uniformly dispersed in the high density polyethylene, and the barrier property is improved through the lamellar structure of the intercalated montmorillonite.
(3) The use of the nano particles not only improves the mechanical property of the sampling bottle, but also enables the sampling bottle to have a certain antibacterial function, so that the collected sample can be stored in the bottle for a long time.
Detailed Description
The invention provides a high-airtightness isotope sampling bottle, which comprises a bottle body, a bottle cap and a gasket, wherein the gasket is arranged in the bottle cap;
the body of the sampling bottle is prepared from the following raw materials in parts by mass:
60-80 parts of high-density polyethylene, 10-30 parts of polyamide, 1-15 parts of polyolefin elastomer, 5-15 parts of filler, 1-10 parts of compatilizer, 1-5 parts of plasticizer, 3-8 parts of antioxidant and 10-15 parts of nano particles.
In the invention, the bottle body is preferably prepared from the following raw materials in parts by mass: 62-78 parts of high-density polyethylene, 13-29 parts of polyamide, 4-14 parts of polyolefin elastomer, 7-13 parts of filler, 2-8 parts of compatilizer, 1.5-4.5 parts of plasticizer, 4-7 parts of antioxidant and 11-14 parts of nano particles; the composite material is further preferably prepared from the following raw materials in parts by mass: 66-75 parts of high-density polyethylene, 18-24 parts of polyamide, 7-11 parts of polyolefin elastomer, 8-12 parts of filler, 3-6 parts of compatilizer, 2.2-3.5 parts of plasticizer, 5-6 parts of antioxidant and 12-13 parts of nano particles; more preferably, the compound is prepared from the following raw materials in parts by mass: 69 parts of high-density polyethylene, 19 parts of polyamide, 10 parts of polyolefin elastomer, 11 parts of filler, 5 parts of compatilizer, 2.5 parts of plasticizer, 5.6 parts of antioxidant and 12.6 parts of nano particles.
In the present invention, the polyamide is preferably nylon 6; the polyolefin elastomer is preferably POE.
In the present invention, the filler is preferably a mixture of intercalated montmorillonite and attapulgite; the mass ratio of the intercalated montmorillonite to the attapulgite is preferably 3-5: 1 to 3, more preferably 3.3 to 4.6:1.2 to 2.8, more preferably 4.2: 2.3.
In the invention, the intercalated montmorillonite is preferably one of intercalation modified sodium montmorillonite of cetyl ammonium bromide, cetyl ammonium chloride or dodecyl trimethyl ammonium bromide.
In the invention, the preparation method of the intercalated montmorillonite comprises the following steps: mixing sodium-based montmorillonite with water to obtain montmorillonite solution; taking one of cetyl ammonium bromide, cetyl ammonium chloride or dodecyl trimethyl ammonium bromide as an intercalating agent, and mixing the intercalating agent with water to obtain an intercalating agent solution; mixing the intercalation agent solution and the montmorillonite solution, stirring for a certain time, and standing for layering; and washing the precipitate obtained by standing and layering with water until no precipitate is generated by dropwise adding a silver nitrate solution into the supernatant liquid, thereby obtaining the intercalated montmorillonite.
In the present invention, the compatibilizer is preferably HDPE-g-MAH; the plasticizer is preferably tributyl citrate or acetyl tributyl citrate, and is further preferably acetyl tributyl citrate; the antioxidant is preferably one or more of antioxidant 1010, antioxidant 168, antioxidant MB and antioxidant BHT, more preferably one or more of antioxidant 1010, antioxidant MB and antioxidant BHT, and even more preferably an oxygen agent MB; the nano particles are preferably any two of nano titanium dioxide, nano silicon dioxide and nano zinc oxide, more preferably the mixture of nano titanium dioxide and nano silicon dioxide or the mixture of nano zinc oxide and nano titanium dioxide, and more preferably the mixture of nano zinc oxide and nano titanium dioxide; the particle diameter of the nanoparticles is preferably 10 to 300nm, more preferably 30 to 220nm, and still more preferably 160nm.
In the present invention, the thickness of the bottle body is preferably 2 to 4mm, more preferably 2.3 to 3.7mm, and still more preferably 3.1mm.
In the invention, the bottle cap is prepared from the following raw materials in parts by mass:
60-80 parts of polypropylene, 620-30 parts of nylon, 1-10 parts of intercalated montmorillonite, 1-10 parts of compatilizer, 1-10 parts of plasticizer and 1-5 parts of antioxidant.
In the invention, the bottle cap is preferably prepared from the following raw materials in parts by mass: 61-76 parts of polypropylene, 621-28 parts of nylon, 2-9 parts of intercalated montmorillonite, 3-9 parts of compatilizer, 3-8 parts of plasticizer and 1.6-4.2 parts of antioxidant; the composite material is further preferably prepared from the following raw materials in parts by mass: 66-73 parts of polypropylene, 624-27 parts of nylon, 3-8 parts of intercalated montmorillonite, 4-8 parts of compatilizer, 4-7 parts of plasticizer and 2.6-3.7 parts of antioxidant; the composite material is more preferably prepared from the following raw materials in parts by mass: 68 parts of polypropylene, 626 parts of nylon, 6 parts of intercalated montmorillonite, 7 parts of compatilizer, 5 parts of plasticizer and 2.9 parts of antioxidant.
In the invention, the intercalated montmorillonite in the raw material of the bottle cap is preferably cetyl ammonium bromide intercalated modified sodium-based montmorillonite; the compatilizer is preferably PP-g-MAH; the plasticizer is preferably tributyl citrate or acetyl tributyl citrate, and is further preferably tributyl citrate; the antioxidant is preferably one or more of antioxidant 1010, antioxidant 168 and antioxidant BHT, more preferably antioxidant 1010 or antioxidant 168, and even more preferably antioxidant 168.
In the invention, the gasket is preferably made of a polytetrafluoroethylene-silica gel composite gasket; the gasket is a commercially available product and is purchased from Nantong cloud engineering experimental equipment Co.Ltd; the preparation method of the gasket is not limited, and the gasket can be a polytetrafluoroethylene-silica gel composite gasket which can be purchased by a person skilled in the art. In the invention, one side of the gasket made of the polytetrafluoroethylene material is in contact with the bottle mouth of the bottle body, and one side of the gasket made of the silica gel material is in contact with the bottle cap.
The invention also provides a preparation method of the high-leakproofness isotope sampling bottle, which comprises the following steps: mixing the raw materials of the bottle body, and then sequentially performing injection molding, blow molding and demolding to obtain the bottle body of the high-airtightness isotope sampling bottle;
the preparation method of the bottle cap comprises the following steps: and extruding, granulating and injection molding the raw material of the bottle cap to obtain the bottle cap of the high-tightness isotope sampling bottle.
In the invention, an injection molding machine is used in the preparation method of the bottle body and the bottle cap; the temperature of the fore zone of the cylinder of the injection molding machine is independently preferably 160 to 185 ℃, more preferably 163 to 178 ℃, and more preferably 172 ℃; the feed temperature is independently preferably 220 to 245 ℃, more preferably 224 to 241 ℃, and even more preferably 237 ℃.
In the present invention, the pressure for blow molding in the method for producing a bottle body is preferably 0.5 to 1.2MPa, more preferably 0.7 to 1.1MPa, and still more preferably 0.9MPa; the time for blowing is preferably 1 to 60 seconds, more preferably 5 to 50 seconds, and still more preferably 24 seconds.
In the present invention, the temperature for extrusion granulation in the method for producing a bottle cap is preferably 180 to 240 ℃, more preferably 187 to 232 ℃, and still more preferably 206 ℃.
The invention also provides application of the high-tightness isotope sampling bottle in an underground water dissolved inorganic carbon radioactive analysis sample collecting device, a liquid flash method carbon fourteen sample acidolysis sample preparation device or an organic carbon high-temperature closed combustion system.
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Example 1
The embodiment provides a high leakproofness isotope sampling bottle, and this sampling bottle includes body, bottle lid and gasket, and the gasket is arranged in the bottle lid.
The preparation method of the body of the sampling bottle comprises the following steps:
(1) Mixing 70 parts of high-density polyethylene, 623 parts of nylon, 11 parts of POE, 5 parts of intercalated montmorillonite, 3 parts of attapulgite, 7 parts of HDPE-g-MAH, 4 parts of tributyl citrate, 10105 parts of antioxidant, 6 parts of nano titanium dioxide with the particle size of 100nm and 6 parts of nano silicon dioxide with the particle size of 100nm to obtain a mixture;
(2) Injecting the mixture into an injection molding machine, wherein the front region temperature of the charging barrel is 175 ℃, and the feeding temperature is 225 ℃ to obtain a bottle blank;
(3) Placing the bottle blank in a blow molding mould, wherein the blow molding pressure is 1MPa, and the time is 20s, so as to obtain a molded bottle body; and demolding the molded bottle body in a mold to obtain a bottle body with the volume of 1L and the thickness of 3.8 mm.
The preparation method of the bottle cap of the sampling bottle comprises the following steps:
70 parts of polypropylene, 625 parts of nylon, 4 parts of intercalated montmorillonite, 7 parts of PP-g-MAH, 6 parts of acetyl tributyl citrate and 10105 parts of antioxidant are mixed, and extruded and granulated at 220 ℃ by an extruder; and performing injection molding in an injection molding machine, wherein the front zone temperature of the charging barrel is 165 ℃, and the feeding temperature is 235 ℃, so as to obtain the bottle cap.
The gasket is a polytetrafluoroethylene-silica gel composite gasket.
The preparation method of the intercalated montmorillonite in the bottle body and the bottle cap comprises the following steps: mixing 5g of sodium montmorillonite with 100mL of water to obtain montmorillonite solution; mixing 4g of hexadecyl ammonium bromide with 150mL of water to obtain an intercalation agent solution; mixing the intercalation agent solution and the montmorillonite solution, stirring at 70 ℃ for 3h, and standing for layering; and washing the precipitate obtained by standing and layering with water until no precipitate is generated by dropwise adding 0.1mol/L silver nitrate solution into the supernatant, thereby obtaining the intercalated montmorillonite.
Example 2
The embodiment provides a high-leakproofness isotope sampling bottle, which is specifically referred to in embodiment 1, and the difference is that the bottle body is made of the following raw materials: 62 parts of high-density polyethylene, 630 parts of nylon, 6 parts of POE (polyolefin elastomer), 8 parts of intercalated montmorillonite, 6 parts of attapulgite, 3 parts of HDPE-g-MAH (high-density polyethylene-maleic anhydride), 3 parts of tributyl citrate, 7 parts of antioxidant BHT (butylated hydroxytoluene), 5 parts of nano titanium dioxide with the particle size of 200nm and 10 parts of nano zinc oxide with the particle size of 200 nm; the thickness of the bottle body is 2.8mm.
Example 3
The embodiment provides a high leakproofness isotope sampling bottle, refer to embodiment 1 specifically, the difference lies in that the raw materials of body are: 80 parts of high-density polyethylene, 616 parts of nylon, 15 parts of POE (polyolefin elastomer), 10 parts of intercalated montmorillonite, 5 parts of attapulgite, 1 part of HDPE-g-MAH (high-density polyethylene-grafted maleic anhydride), 2 parts of acetyl tributyl citrate, 8 parts of antioxidant MB, 5 parts of nano-silica with the particle size of 50nm and 5 parts of nano-zinc oxide with the particle size of 100 nm; the thickness of the bottle body is 2.2mm.
Comparative example 1
This comparative example provides a sampling bottle, see in particular example 1, except that the body has a thickness of 1mm.
Comparative example 2
This comparative example provides a sampling bottle, refer to example 1 specifically, the difference does not contain nylon 6, POE in the raw materials of body.
The bodies obtained in examples 1 to 3 and comparative examples 1 to 2 were subjected to a performance test, and the results are shown in Table 1.
TABLE 1 body Performance test results
| Sample (I) | Tensile strength MPa | Oxygen transmission rate g/(m) 2 ·d) | Water permeability g/(m) 2 ·d) |
| Example 1 | 106.4 | 0.054 | 0.043 |
| Example 2 | 103.7 | 0.063 | 0.056 |
| Example 3 | 104.9 | 0.057 | 0.067 |
| Comparative example 1 | 87.2 | 1.369 | 1.794 |
| Comparative example 2 | 75.3 | 1.428 | 1.921 |
As can be seen from Table 1, the sampling bottle provided by the invention has excellent mechanical properties, has the transmittance for oxygen and water of less than 0.1, has high barrier property, and can meet the storage and test requirements of samples with high requirements on tightness. From comparative examples 1-2, it can be seen that the thickness of the body and the addition of the barrier material have significant effects on mechanical properties, air permeability, and water permeability.
When a certain water sample is stored in the sampling bottle in the embodiment 1 and is detected after being stored for 3 years, the apparent age of the fourteen carbon samples can reach 43.75 thousand years, and the detection result is ideal, which shows that the sampling bottle can store the samples for a long time and has excellent tightness and air insulation.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (9)
1. A high-airtightness isotope sampling bottle is characterized by comprising a bottle body, a bottle cap and a gasket, wherein the gasket is arranged in the bottle cap;
the body of the sampling bottle is prepared from the following raw materials in parts by mass:
60-80 parts of high-density polyethylene, 10-30 parts of polyamide, 1-15 parts of polyolefin elastomer, 5-15 parts of filler, 1-10 parts of compatilizer, 1-5 parts of plasticizer, 3-8 parts of antioxidant and 10-15 parts of nano particles.
2. The highly sealable isotope sampling bottle in accordance with claim 1, wherein said polyamide is nylon 6; the polyolefin elastomer is POE.
3. The high-tightness isotope sampling bottle according to claim 1 or 2, wherein the filler is a mixture of intercalated montmorillonite and attapulgite; the mass ratio of the intercalated montmorillonite to the attapulgite is 3-5: 1 to 3.
4. The isotope sampling bottle in accordance with claim 3, wherein said intercalated montmorillonite is one of cetyl ammonium bromide, cetyl ammonium chloride or dodecyl trimethyl ammonium bromide.
5. The highly hermetic isotope sampling bottle in accordance with claim 1, 2, or 4, wherein the compatibilizer is HDPE-g-MAH; the plasticizer is tributyl citrate or acetyl tributyl citrate; the antioxidant is one or more of antioxidant 1010, antioxidant 168, antioxidant MB and antioxidant BHT; the nano particles are any two of nano titanium dioxide, nano silicon dioxide and nano zinc oxide.
6. The highly-closed isotope sampling bottle according to claim 1 or 4, wherein the thickness of the bottle body is 2-4 mm.
7. The high-tightness isotope sampling bottle according to claim 6, wherein the bottle cap is prepared from the following raw materials in parts by mass: 60-80 parts of polypropylene, 620-30 parts of nylon, 1-10 parts of intercalated montmorillonite, 1-10 parts of compatilizer, 1-10 parts of plasticizer and 1-5 parts of antioxidant;
the gasket is made of a polytetrafluoroethylene-silica gel composite gasket.
8. The method for preparing a high-tightness isotope sampling bottle according to any one of claims 1 to 7, characterized in that the method for preparing the bottle body comprises the following steps: mixing the raw materials of the bottle body, and then sequentially performing injection molding, blow molding and demolding to obtain the bottle body of the high-airtightness isotope sampling bottle;
the preparation method of the bottle cap comprises the following steps: and extruding, granulating and injection molding the raw material of the bottle cap to obtain the bottle cap of the high-tightness isotope sampling bottle.
9. The use of the highly-sealed isotope sampling bottle as claimed in any one of claims 1 to 7 in a sample collection device for radioactive analysis of groundwater-dissolved inorganic carbon, a device for acidolysis of a liquid-flash-method carbon fourteen-sample or a high-temperature sealed combustion system for organic carbon.
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| US20040106719A1 (en) * | 2001-12-27 | 2004-06-03 | Myung-Ho Kim | Nanocomposite blend composition having super barrier property |
| US20050215694A1 (en) * | 2001-12-27 | 2005-09-29 | Myung-Ho Kim | Nanocomposite composition having super barrier property and article using the same |
| CN101768302A (en) * | 2008-12-29 | 2010-07-07 | 上海杰事杰新材料股份有限公司 | Preparation method of high barrier property polyethylene/nylon 6 in-situ nanocomposite material |
| CN113121903A (en) * | 2021-04-12 | 2021-07-16 | 金富科技股份有限公司 | High-barrier plastic bottle cap and preparation method thereof |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040106719A1 (en) * | 2001-12-27 | 2004-06-03 | Myung-Ho Kim | Nanocomposite blend composition having super barrier property |
| US20050215694A1 (en) * | 2001-12-27 | 2005-09-29 | Myung-Ho Kim | Nanocomposite composition having super barrier property and article using the same |
| CN101768302A (en) * | 2008-12-29 | 2010-07-07 | 上海杰事杰新材料股份有限公司 | Preparation method of high barrier property polyethylene/nylon 6 in-situ nanocomposite material |
| CN113121903A (en) * | 2021-04-12 | 2021-07-16 | 金富科技股份有限公司 | High-barrier plastic bottle cap and preparation method thereof |
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