CN105778258A - Preparation method of banana fresh-keeping material film master batch containing rare earth complex - Google Patents
Preparation method of banana fresh-keeping material film master batch containing rare earth complex Download PDFInfo
- Publication number
- CN105778258A CN105778258A CN201610177091.5A CN201610177091A CN105778258A CN 105778258 A CN105778258 A CN 105778258A CN 201610177091 A CN201610177091 A CN 201610177091A CN 105778258 A CN105778258 A CN 105778258A
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- China
- Prior art keywords
- rare earth
- master batch
- preparation
- compound
- temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 229910052761 rare earth metal Inorganic materials 0.000 title claims abstract description 73
- 150000002910 rare earth metals Chemical class 0.000 title claims abstract description 57
- 239000004594 Masterbatch (MB) Substances 0.000 title claims abstract description 48
- 238000002360 preparation method Methods 0.000 title claims abstract description 33
- 239000000463 material Substances 0.000 title claims abstract description 30
- 235000018290 Musa x paradisiaca Nutrition 0.000 title claims abstract description 22
- 240000005561 Musa balbisiana Species 0.000 title 1
- 239000000843 powder Substances 0.000 claims abstract description 38
- -1 cerium ions Chemical class 0.000 claims abstract description 31
- 229910052613 tourmaline Inorganic materials 0.000 claims abstract description 25
- 229940070527 tourmaline Drugs 0.000 claims abstract description 25
- 239000011032 tourmaline Substances 0.000 claims abstract description 25
- 241000234295 Musa Species 0.000 claims abstract description 23
- 229910052684 Cerium Inorganic materials 0.000 claims abstract description 16
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 16
- RYYKJJJTJZKILX-UHFFFAOYSA-M sodium octadecanoate Chemical compound [Na+].CCCCCCCCCCCCCCCCCC([O-])=O RYYKJJJTJZKILX-UHFFFAOYSA-M 0.000 claims abstract description 16
- 229910052746 lanthanum Inorganic materials 0.000 claims abstract description 14
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 14
- 238000002156 mixing Methods 0.000 claims abstract description 13
- 229910052727 yttrium Inorganic materials 0.000 claims abstract description 13
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000005253 cladding Methods 0.000 claims abstract description 12
- 230000004048 modification Effects 0.000 claims abstract description 12
- 238000012986 modification Methods 0.000 claims abstract description 12
- 230000008569 process Effects 0.000 claims abstract description 12
- 239000006185 dispersion Substances 0.000 claims abstract description 10
- 238000001125 extrusion Methods 0.000 claims abstract description 10
- 229910052772 Samarium Inorganic materials 0.000 claims abstract description 3
- KZUNJOHGWZRPMI-UHFFFAOYSA-N samarium atom Chemical compound [Sm] KZUNJOHGWZRPMI-UHFFFAOYSA-N 0.000 claims abstract description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 54
- 239000000243 solution Substances 0.000 claims description 48
- 238000013329 compounding Methods 0.000 claims description 45
- 239000002994 raw material Substances 0.000 claims description 33
- WFDIJRYMOXRFFG-UHFFFAOYSA-N Acetic anhydride Chemical compound CC(=O)OC(C)=O WFDIJRYMOXRFFG-UHFFFAOYSA-N 0.000 claims description 24
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 24
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 24
- 150000001875 compounds Chemical class 0.000 claims description 24
- 229920002101 Chitin Polymers 0.000 claims description 20
- 239000002244 precipitate Substances 0.000 claims description 18
- 230000021736 acetylation Effects 0.000 claims description 16
- 238000006640 acetylation reaction Methods 0.000 claims description 16
- 239000012153 distilled water Substances 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 238000004898 kneading Methods 0.000 claims description 14
- 238000006243 chemical reaction Methods 0.000 claims description 12
- 150000004676 glycans Chemical class 0.000 claims description 12
- 238000005453 pelletization Methods 0.000 claims description 12
- 229920001282 polysaccharide Polymers 0.000 claims description 12
- 239000005017 polysaccharide Substances 0.000 claims description 12
- 235000013311 vegetables Nutrition 0.000 claims description 12
- 229910052779 Neodymium Inorganic materials 0.000 claims description 10
- 239000007864 aqueous solution Substances 0.000 claims description 10
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 claims description 10
- 238000001556 precipitation Methods 0.000 claims description 10
- 239000002131 composite material Substances 0.000 claims description 9
- 229910002651 NO3 Inorganic materials 0.000 claims description 8
- HSJPMRKMPBAUAU-UHFFFAOYSA-N cerium(3+);trinitrate Chemical compound [Ce+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O HSJPMRKMPBAUAU-UHFFFAOYSA-N 0.000 claims description 8
- 230000008030 elimination Effects 0.000 claims description 8
- 238000003379 elimination reaction Methods 0.000 claims description 8
- FYDKNKUEBJQCCN-UHFFFAOYSA-N lanthanum(3+);trinitrate Chemical compound [La+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O FYDKNKUEBJQCCN-UHFFFAOYSA-N 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 8
- 239000000047 product Substances 0.000 claims description 8
- 230000001105 regulatory effect Effects 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 8
- 238000001291 vacuum drying Methods 0.000 claims description 8
- 238000005406 washing Methods 0.000 claims description 8
- BXJPTTGFESFXJU-UHFFFAOYSA-N yttrium(3+);trinitrate Chemical compound [Y+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O BXJPTTGFESFXJU-UHFFFAOYSA-N 0.000 claims description 8
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims description 4
- 229920000092 linear low density polyethylene Polymers 0.000 claims description 4
- 239000004707 linear low-density polyethylene Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 3
- OBOSXEWFRARQPU-UHFFFAOYSA-N 2-n,2-n-dimethylpyridine-2,5-diamine Chemical compound CN(C)C1=CC=C(N)C=N1 OBOSXEWFRARQPU-UHFFFAOYSA-N 0.000 claims description 2
- 239000005715 Fructose Substances 0.000 claims description 2
- 229930091371 Fructose Natural products 0.000 claims description 2
- RFSUNEUAIZKAJO-ARQDHWQXSA-N Fructose Chemical compound OC[C@H]1O[C@](O)(CO)[C@@H](O)[C@@H]1O RFSUNEUAIZKAJO-ARQDHWQXSA-N 0.000 claims description 2
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims description 2
- 229920002472 Starch Polymers 0.000 claims description 2
- DGVVPRHPLWDELQ-UHFFFAOYSA-N acetic acid;samarium Chemical compound [Sm].CC(O)=O.CC(O)=O.CC(O)=O DGVVPRHPLWDELQ-UHFFFAOYSA-N 0.000 claims description 2
- DUSUCKWNBGMKRV-UHFFFAOYSA-N acetic acid;yttrium Chemical compound [Y].CC(O)=O DUSUCKWNBGMKRV-UHFFFAOYSA-N 0.000 claims description 2
- 229920002678 cellulose Polymers 0.000 claims description 2
- 239000001913 cellulose Substances 0.000 claims description 2
- VYLVYHXQOHJDJL-UHFFFAOYSA-K cerium trichloride Chemical compound Cl[Ce](Cl)Cl VYLVYHXQOHJDJL-UHFFFAOYSA-K 0.000 claims description 2
- VGBWDOLBWVJTRZ-UHFFFAOYSA-K cerium(3+);triacetate Chemical compound [Ce+3].CC([O-])=O.CC([O-])=O.CC([O-])=O VGBWDOLBWVJTRZ-UHFFFAOYSA-K 0.000 claims description 2
- UNJPQTDTZAKTFK-UHFFFAOYSA-K cerium(iii) hydroxide Chemical compound [OH-].[OH-].[OH-].[Ce+3] UNJPQTDTZAKTFK-UHFFFAOYSA-K 0.000 claims description 2
- 229910000245 dravite Inorganic materials 0.000 claims description 2
- 229910000244 elbaite Inorganic materials 0.000 claims description 2
- 238000001914 filtration Methods 0.000 claims description 2
- IDIJOAIHTRIPRC-UHFFFAOYSA-J hexaaluminum;sodium;2,2,4,4,6,6,8,8,10,10,12,12-dodecaoxido-1,3,5,7,9,11-hexaoxa-2,4,6,8,10,12-hexasilacyclododecane;iron(2+);triborate;tetrahydroxide Chemical compound [OH-].[OH-].[OH-].[OH-].[Na+].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Fe+2].[Fe+2].[Fe+2].[O-]B([O-])[O-].[O-]B([O-])[O-].[O-]B([O-])[O-].[O-][Si]1([O-])O[Si]([O-])([O-])O[Si]([O-])([O-])O[Si]([O-])([O-])O[Si]([O-])([O-])O[Si]([O-])([O-])O1 IDIJOAIHTRIPRC-UHFFFAOYSA-J 0.000 claims description 2
- JLRJWBUSTKIQQH-UHFFFAOYSA-K lanthanum(3+);triacetate Chemical compound [La+3].CC([O-])=O.CC([O-])=O.CC([O-])=O JLRJWBUSTKIQQH-UHFFFAOYSA-K 0.000 claims description 2
- YXEUGTSPQFTXTR-UHFFFAOYSA-K lanthanum(3+);trihydroxide Chemical group [OH-].[OH-].[OH-].[La+3] YXEUGTSPQFTXTR-UHFFFAOYSA-K 0.000 claims description 2
- ICAKDTKJOYSXGC-UHFFFAOYSA-K lanthanum(iii) chloride Chemical compound Cl[La](Cl)Cl ICAKDTKJOYSXGC-UHFFFAOYSA-K 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- BCYBEIXXOVNETJ-UHFFFAOYSA-K samarium(3+);trihydroxide Chemical compound [OH-].[OH-].[OH-].[Sm+3] BCYBEIXXOVNETJ-UHFFFAOYSA-K 0.000 claims description 2
- BHXBZLPMVFUQBQ-UHFFFAOYSA-K samarium(iii) chloride Chemical compound Cl[Sm](Cl)Cl BHXBZLPMVFUQBQ-UHFFFAOYSA-K 0.000 claims description 2
- 229910000246 schorl Inorganic materials 0.000 claims description 2
- 235000019698 starch Nutrition 0.000 claims description 2
- 239000008107 starch Substances 0.000 claims description 2
- DEXZEPDUSNRVTN-UHFFFAOYSA-K yttrium(3+);trihydroxide Chemical compound [OH-].[OH-].[OH-].[Y+3] DEXZEPDUSNRVTN-UHFFFAOYSA-K 0.000 claims description 2
- FATBGEAMYMYZAF-KTKRTIGZSA-N oleamide Chemical compound CCCCCCCC\C=C/CCCCCCCC(N)=O FATBGEAMYMYZAF-KTKRTIGZSA-N 0.000 abstract description 14
- FATBGEAMYMYZAF-UHFFFAOYSA-N oleicacidamide-heptaglycolether Natural products CCCCCCCCC=CCCCCCCCC(N)=O FATBGEAMYMYZAF-UHFFFAOYSA-N 0.000 abstract description 14
- 238000003860 storage Methods 0.000 abstract description 10
- 239000011347 resin Substances 0.000 abstract description 4
- 229920005989 resin Polymers 0.000 abstract description 4
- 244000005700 microbiome Species 0.000 abstract description 2
- 238000000071 blow moulding Methods 0.000 abstract 1
- 230000002401 inhibitory effect Effects 0.000 abstract 1
- 230000029058 respiratory gaseous exchange Effects 0.000 abstract 1
- 230000000979 retarding effect Effects 0.000 abstract 1
- 229920010126 Linear Low Density Polyethylene (LLDPE) Polymers 0.000 description 13
- 230000000844 anti-bacterial effect Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 229910021645 metal ion Inorganic materials 0.000 description 7
- 230000001276 controlling effect Effects 0.000 description 6
- CFYGEIAZMVFFDE-UHFFFAOYSA-N neodymium(3+);trinitrate Chemical compound [Nd+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O CFYGEIAZMVFFDE-UHFFFAOYSA-N 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- 238000005303 weighing Methods 0.000 description 6
- 108090000790 Enzymes Proteins 0.000 description 5
- 102000004190 Enzymes Human genes 0.000 description 5
- 230000000241 respiratory effect Effects 0.000 description 5
- 241000196324 Embryophyta Species 0.000 description 4
- 235000013399 edible fruits Nutrition 0.000 description 4
- 239000010408 film Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000003755 preservative agent Substances 0.000 description 3
- 230000002335 preservative effect Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 102000030523 Catechol oxidase Human genes 0.000 description 2
- 108010031396 Catechol oxidase Proteins 0.000 description 2
- 241000234615 Musaceae Species 0.000 description 2
- 150000001450 anions Chemical class 0.000 description 2
- 230000000845 anti-microbial effect Effects 0.000 description 2
- 230000001580 bacterial effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 230000004345 fruit ripening Effects 0.000 description 2
- CZMAIROVPAYCMU-UHFFFAOYSA-N lanthanum(3+) Chemical compound [La+3] CZMAIROVPAYCMU-UHFFFAOYSA-N 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229920001184 polypeptide Polymers 0.000 description 2
- 102000004196 processed proteins & peptides Human genes 0.000 description 2
- 108090000765 processed proteins & peptides Proteins 0.000 description 2
- 210000001519 tissue Anatomy 0.000 description 2
- 208000024172 Cardiovascular disease Diseases 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 241001597008 Nomeidae Species 0.000 description 1
- 108010059820 Polygalacturonase Proteins 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000008485 antagonism Effects 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 244000052616 bacterial pathogen Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 235000009508 confectionery Nutrition 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 108010093305 exopolygalacturonase Proteins 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 235000019634 flavors Nutrition 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 210000002752 melanocyte Anatomy 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 244000052769 pathogen Species 0.000 description 1
- 230000001717 pathogenic effect Effects 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 230000035479 physiological effects, processes and functions Effects 0.000 description 1
- 230000035790 physiological processes and functions Effects 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 230000005070 ripening Effects 0.000 description 1
- 230000002000 scavenging effect Effects 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0807—Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
- C08L23/0815—Copolymers of ethene with aliphatic 1-olefins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B37/00—Preparation of polysaccharides not provided for in groups C08B1/00 - C08B35/00; Derivatives thereof
- C08B37/0006—Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid
- C08B37/0024—Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid beta-D-Glucans; (beta-1,3)-D-Glucans, e.g. paramylon, coriolan, sclerotan, pachyman, callose, scleroglucan, schizophyllan, laminaran, lentinan or curdlan; (beta-1,6)-D-Glucans, e.g. pustulan; (beta-1,4)-D-Glucans; (beta-1,3)(beta-1,4)-D-Glucans, e.g. lichenan; Derivatives thereof
- C08B37/0027—2-Acetamido-2-deoxy-beta-glucans; Derivatives thereof
- C08B37/003—Chitin, i.e. 2-acetamido-2-deoxy-(beta-1,4)-D-glucan or N-acetyl-beta-1,4-D-glucosamine; Chitosan, i.e. deacetylated product of chitin or (beta-1,4)-D-glucosamine; Derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/20—Compounding polymers with additives, e.g. colouring
- C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
- C08J3/226—Compounding polymers with additives, e.g. colouring using masterbatch techniques using a polymer as a carrier
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/08—Copolymers of ethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/08—Copolymers of ethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/16—Applications used for films
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Biochemistry (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Abstract
The invention relates to a preparation method of a banana fresh-keeping film master batch containing a rare earth complex. The preparation method comprises the following steps of: by taking LLDPE (Linear Low Density Polythylene) as carrier resin, adding tourmaline powder, the rare earth complex, kieselguhr, oleamide and sodium stearate; and performing cladding dispersion, interface modification, material mixing, and extrusion and grain-sized dicing processing. The rare earth complex is characterized in that the molar ratio of lanthanum, yttrium, samarium and cerium ions is w(3.00-3.15) to x(0.30-0.40) to y(1.20-1.25) to z(0.90-1.00). 6-8 percent of the master batch prepared by the method is added into the LLDPE resin so as to be subjected to blow molding, so that a film is prepared; the film is used for banana fresh-keeping package and is capable of inhibiting the respiration intensity and surface microorganism growth in a storage process, retarding a softening process, and prolonging the refreshing time at a normal temperature by 9-12 days.
Description
Technical field
The preparation method that the present invention relates to functional plastic film master batch, the preparation method being specifically related to a kind of banana fresh-keeping film master batch containing rare earth compounding.
Background technology
Fructus Musae belongs to Musaceae (Musaceae) Musa (Musa) plant, and Fructus Musae is one of the torrid zone, subtropical zone name fruit, and its yield is high, and sweet cunning is aromatic, containing abundant nutrient substance, very popular.Reactive oxygen free radical is had scavenging action by fresh Fructus Musae, often eats banana and can strengthen human plasma oxidation resistance, plays the positive role of prevention cardiovascular disease and slow down aging.After banana is adopted, pectinase activity increases, and participates in pulp softening, and polyphenol oxidase participates in producing melanocyte.Climacteric occurs rapidly under room temperature.Adopt and after ripening process can discharge ethylene, respiratory climacteric occurs, and makes fruit interior tissue that a series of maturations and old and feeble physiological change to occur.It is embodied in the generation that peel turns yellow, produces volatile flavor substance and various physiological disease.So suppressing respiratory intensity to delay the arrival of respiratory climacteric, be just conducive to fresh-keeping.Pathogen and mechanical wounding can promote physiology after-ripening, shorten the fruit storage life-span；Fructus Musae is very sensitive to low temperature simultaneously, is very easy to freezing evil, is difficult to storage and long-distance transportation and sales after causing Banana.
China's rare earth resources enriches, and rare earth develops exists great potential.Rare earth and derivant thereof can as antimicrobial antistaling agents, Ca2+It is the ion maintaining antibacterial normal activity, and lanthanum ion has antagonism Ca2+Effect, so antibacterial normal activities can be interfered by lanthanum ion, cause bacterial death, in Rare Earth Lanthanum coordination antibacterial, part enhances anti-microbial property simultaneously.Cerium ion has hydrolysis, it is possible to fracture polypeptide chain, and enzyme is protein, so cerium ion makes the polypeptide chain in enzyme rupture；In addition cerium ion is to the displacement of metal ion and competition in enzyme thus have impact on the physiological function of enzyme, therefore can slow down softening process by suppression pectase, polyphenol oxidase activity, it is suppressed that Tissue Browning；Can also with affecting relevant enzyme suppresses respiratory intensity excessively.Rare earth has the stronger ability removing hydroxyl radical free radical, reduces free radical and occurs, and weakens active oxygen injury, delayed fruit ripening and senescence, extends Fructus Musae shelf life.Tourmaline Ye Shi China is rich in mineral resources, and tourmaline powder anion releasing can effective killing pathogenic bacteria.Its mechanism essentially consists in after anion is combined with antibacterial, makes antibacterial produce the change of structure or the transfer of energy, causes bacterial death.Vegetable polysaccharides is abundant Renewable resource, itself has certain antibacterial effect, and acetylizad vegetable polysaccharides has the stronger ability removing hydroxyl radical free radical.
At present, the main air conditioned storage of banana fresh-keeping technology, variable temperature storage, cold haze, coating preservation, fresh chemically etc..Though physical method is nontoxic and compares effectively, but relatively costly, needs specific appointed condition, be not suitable for commonly used；And adopt chemical drugs to make antistaling agent, the problem such as residual hazard further relating to some medicine.Banana fresh-keeping technology is subject to industry for a long time and pays close attention to, and expert, scholar have carried out many-sided research, but this problem is solved not yet at all at present.
Summary of the invention
For the deficiency that existing banana fresh-keeping is packed.The preparation method that the invention provides the good lower-cost master batch of a kind of anti-bacterial refreshing, it is characterized in that: with LLDPE for vector resin, interpolation tourmaline powder, rare earth compounding, kieselguhr, oleamide, sodium stearate are processed by cladding dispersion, interface modification, mixing of materials, extrusion pelletizing.Master batch prepared by this method, adds in LLDPE resin with the ratio of 6～8%, after thin film is made in blowing, packs for banana fresh-keeping, can suppress respiratory intensity and surface microorganism growth in storage, and normal temperature condition prolongs storage period 9～12 days.
The technical scheme is that for realizing the purpose of the present invention
1, the preparation of rare earth compounding
Master batch is prepared according to the following steps:
(1) vegetable polysaccharides of 2 weight portions is dissolved in the acetic acid solution of 60 weight portions; after stirring, adding the methanol of 80 weight portions, solution is no longer sticky; add the acetic anhydride of 1 weight portion; after reacting 1h at temperature 30 DEG C, the thick liquid of reaction gained is joined in the ethanol of 150 weight portions, filtering precipitate after precipitation generation; with absolute ethanol washing 3 times; after dissolving with acetic acid solution again, elimination insoluble matter, obtain acetylation vegetable polysaccharides solution.
(2) according to lanthanum, yttrium, neodymium, cerium ion mol ratio be 3.00～3.15:0.30～0.40:1.20～1.25:0.90～1.00, weigh the compound of lanthanum, the compound of yttrium, the compound of neodymium and the compound of cerium respectively and be mixed into rare earth compound, and join in distilled water with the weight part ratio of 15, obtain rare earth compound mixed aqueous solution after being entirely capable of dissolving；According to weight ratios such as vegetable polysaccharides and rare earth compounds; rare earth compound mixed aqueous solution is slowly added dropwise to acetylation vegetable polysaccharides solution; regulating reaction system pH to 7.0, react 6～7 hours under rotating speed 1000r/min, 25～30 DEG C of conditions of temperature, product precipitates out with precipitation form；Filter after precipitate, remove unreacted rare earth ion with distilled water wash, dry in vacuum drying oven, grind, obtain pulverous rare earth compounding.
2, the preparation of master batch
(1) by 18～21 weight portion rare earth compoundings, 2.5～3.0 weight portion kieselguhr, composite it is placed in blender, add 1.0～1.2 weight portion oleamides, being 250r/min at rotating speed, temperature is cladding dispersion under 102 ± 1 DEG C of conditions, becomes raw material I to be placed in mixer after 15min；
(2) being placed in high-speed kneading machine by 12～14 parts of tourmaline powders, be rotating speed at rotating speed be 500r/min, temperature is, after mediating 10min under 105 ± 1 DEG C of conditions, add 0.8～1.0 weight portion sodium stearate, becomes raw material II after carrying out interface modification 20min；
(3) raw material II and raw material I being placed in mixer and be mixed into compound, the LLDPE mixing 10min adding 59.8～65.7 weight portions obtains mixed material；
(4) mixed material is placed in double screw extruder extrude pelletizing be master batch.
It is placed in mixer and mixes with raw material I, add 54.1～61.6 parts of linear low density polyethylene (LLDPE) mixing 10min；Mixed material is placed in double screw extruder extrude pelletizing be master batch.The present invention
Described tourmaline powder is the mixture of one or more arbitrary proportions in dravite powder, schorl powder, elbaite powder, tsilaisite powder；Described tourmaline powder particle diameter is 1.3～6.5 μm.
Acetic acid solution mass percent concentration of the present invention is 2%.
Vegetable polysaccharides of the present invention is one or more arbitrary proportions in starch, fructose, cellulose, chitin.
The compound of lanthanum of the present invention is the one of lanthanum hydroxide, lanthanum acetate, Lanthanum (III) nitrate or lanthanum chloride.
The compound of yttrium of the present invention is the one of Yttrium trihydroxide, acetic acid yttrium, Yttrium trinitrate or Yttrium chloride(Y2Cl6).
The compound of samarium of the present invention is the one of Samarium trihydroxide., acetic acid samarium, samaric nitrate or samarium trichloride.
The compound of cerium of the present invention is the one of cerium hydroxide, cerous acetate, cerous nitrate or cerium chloride.
Rare earth compounding reaction condition of the present invention is rotating speed 1000r/min, temperature 25～30 DEG C.
In cladding dispersive process of the present invention, the rotating speed of blender is 250r/min, and temperature is 102 ± 1 DEG C.
The rotating speed of interfacial modification process high speed kneader of the present invention is 500r/min, and temperature is 105 ± 1 DEG C.
In mixing of materials process of the present invention, the rotating speed of mixer is 120r/min, and temperature is 108 ± 1 DEG C.
In extrusion pelletizing process of the present invention twin-screw extruder barrel temperature control in 130～140 DEG C of I district, 145～150 DEG C of II district, 150～155 DEG C of III district, 160～165 DEG C of IV district, 155～160 DEG C of V district, die head 155～160 DEG C.
The invention has the beneficial effects as follows: the tourmaline powder that 1. adopts, rare earth, natural plant polyose aboundresources, can effectively reduce cost；2. the tourmaline powder that adopts, rare earth, natural plant polyose are harmless, the material safety prepared, and can relieved pack for fresh food；3. the tourmaline powder that adopts, rare earth, natural plant polyose itself have sterilizing fresh-keeping function, can effectively strengthen anti-bacterial refreshing effect by the mode such as modified, composite.
Accompanying drawing explanation
The sample that Fig. 1 is prepared by the embodiment of the present invention 1 packs 25 DEG C to the storage Fructus Musae appearance effects figure of 8 days with common preservative film.
The sample that Fig. 2 is prepared by the embodiment of the present invention 1 packs 25 DEG C of impacts on the Fructus Musae fruit hardness of storage with common preservative film.
Fig. 3 is the impact of the Fructus Musae content of reducing sugar at the sample prepared by the embodiment of the present invention 1 packs 25 DEG C with common preservative film on storage.
Detailed description of the invention
Embodiment 1
The component of master batch is made up of linear low density polyethylene (LLDPE) 6.08kg, tourmaline powder 1.3kg, rare earth compounding 2.1kg, kieselguhr 0.3kg, oleamide 0.12kg, sodium stearate 0.10kg.
Master batch is prepared according to the following steps:
1, the preparation of rare earth compounding
(1) 2kg chitin is dissolved in 60L acetic acid solution, after stirring, adds 80L methanol; solution is no longer sticky; add acetic anhydride 1L, after reacting 1h at temperature 30 DEG C, the thick liquid of reaction gained is joined in 150L ethanol; precipitation is had to generate; leach solid, with absolute ethanol washing 3 times, then after dissolving with acetic acid solution; elimination insoluble matter, obtains acetylation chitin solution.
(2) according to lanthanum, yttrium, neodymium, the mol ratio of cerium ion is the 3.05:0.40:1.25:1.00 Lanthanum (III) nitrate weighing total amount 2kg respectively, Yttrium trinitrate, neodymium nitrate, cerous nitrate, it is dissolved in 10L distilled water, rare earth nitrate aqueous solution is slowly added dropwise to acetylation chitin solution, control rotating speed 1000r/min, temperature 25 DEG C, react 6 hours, pH value of solution is regulated to 7.0, product precipitates out with flocculent deposit form, filter after precipitate, unreacted metal ion is removed with distilled water wash, vacuum drying oven dries, grind, obtain buff powder, it is rare earth compounding.
2, the preparation of master batch
(1) by 2.1kg rare earth compounding, 0.3kg kieselguhr, composite being placed in blender, add 0.12kg oleamide, at rotating speed 250r/min, temperature is become raw material I after carrying out cladding dispersion 15min under 102 ± 1 DEG C of conditions；
(2) being placed in high-speed kneading machine by 1.3kg tourmaline powder, be 500r/min at rotating speed, temperature is mediate after 10min under 105 ± 1 DEG C of conditions, after being placed in high-speed kneading machine to mediate 10min, adds 0.10kg sodium stearate, becomes raw material II after interface modification 20min；
(3) raw material II and raw material I are placed in mixer and are mixed into compound, add 6.08kg linear low density polyethylene (LLDPE) mixing 10min and obtain mixed material；
(4) mixed material is placed in double screw extruder, mixed material is placed in double screw extruder, controlling extruder barrel temperature: 132 DEG C of I district, 150 DEG C of II district, 155 DEG C of III district, 161 DEG C of IV district, 158 DEG C of V district, die head 160 DEG C, extrusion pelletizing is master batch.
Embodiment 2
The component of master batch is made up of linear low density polyethylene (LLDPE) 6.36kg, tourmaline powder 1.2kg, rare earth compounding 2.0kg, kieselguhr 0.25kg, oleamide 0.10kg, sodium stearate 0.09kg.
Master batch is prepared according to the following steps:
1, the preparation of rare earth compounding
(1) 2kg chitin is dissolved in 60L acetic acid solution, after stirring, adds 80L methanol; solution is no longer sticky; add acetic anhydride 1L, after reacting 1h at temperature 30 DEG C, the thick liquid of reaction gained is joined in 150L ethanol; precipitation is had to generate; leach solid, with absolute ethanol washing 3 times, then after dissolving with acetic acid solution; elimination insoluble matter, obtains acetylation chitin solution.
(2) according to lanthanum, yttrium, neodymium, the mol ratio of cerium ion is the 3.05:0.40:1.25:1.00 Lanthanum (III) nitrate weighing total amount 2kg respectively, Yttrium trinitrate, neodymium nitrate, cerous nitrate, it is dissolved in 10L distilled water, rare earth nitrate aqueous solution is slowly added dropwise to acetylation chitin solution, control rotating speed 1000r/min, temperature 25 DEG C, react 6 hours, pH value of solution is regulated to 7.0, product precipitates out with flocculent deposit form, filter after precipitate, unreacted metal ion is removed with distilled water wash, vacuum drying oven dries, grind, obtain buff powder, it is rare earth compounding.
2, the preparation of master batch
(1) by 2.0kg rare earth compounding, 0.25kg kieselguhr, composite being placed in blender, add 0.10kg oleamide, at rotating speed 250r/min, temperature is become raw material I after carrying out cladding dispersion 15min under 102 ± 1 DEG C of conditions；
(2) being placed in high-speed kneading machine by 1.2kg tourmaline powder, be 500r/min at rotating speed, temperature is mediate after 10min under 105 ± 1 DEG C of conditions, after being placed in high-speed kneading machine to mediate 10min, adds 0.09kg sodium stearate, becomes raw material II after interface modification 20min；
(3) raw material II and raw material I are placed in mixer and are mixed into compound, add 6.36.kg linear low density polyethylene (LLDPE) mixing 10min and obtain mixed material；
(4) mixed material is placed in double screw extruder, mixed material is placed in double screw extruder, controlling extruder barrel temperature: 135 DEG C of I district, 150 DEG C of II district, 155 DEG C of III district, 160 DEG C of IV district, 155 DEG C of V district, die head 155 DEG C, extrusion pelletizing is master batch.
Embodiment 3
The component of master batch is made up of linear low density polyethylene (LLDPE) 6.33kg, tourmaline powder 1.4kg, rare earth compounding 1.8kg, kieselguhr 0.25kg, oleamide 0.12kg, sodium stearate 0.10kg.
Master batch is prepared according to the following steps:
1, the preparation of rare earth compounding
(1) 2kg chitin is dissolved in 60L acetic acid solution, after stirring, adds 80L methanol; solution is no longer sticky; add acetic anhydride 1L, after reacting 1h at temperature 30 DEG C, the thick liquid of reaction gained is joined in 150L ethanol; precipitation is had to generate; leach solid, with absolute ethanol washing 3 times, then after dissolving with acetic acid solution; elimination insoluble matter, obtains acetylation chitin solution.
(2) according to lanthanum, yttrium, neodymium, the mol ratio of cerium ion is the 3.05:0.40:1.25:1.00 Lanthanum (III) nitrate weighing total amount 2kg respectively, Yttrium trinitrate, neodymium nitrate, cerous nitrate, it is dissolved in 10L distilled water, rare earth nitrate aqueous solution is slowly added dropwise to acetylation chitin solution, control rotating speed 1000r/min, temperature 25 DEG C, react 6 hours, pH value of solution is regulated to 7.0, product precipitates out with flocculent deposit form, filter after precipitate, unreacted metal ion is removed with distilled water wash, vacuum drying oven dries, grind, obtain buff powder, it is rare earth compounding.
2, the preparation of master batch
(1) by 1.8kg rare earth compounding, 0.25kg kieselguhr, composite being placed in blender, add 0.12kg oleamide, at rotating speed 250r/min, temperature is become raw material I after carrying out cladding dispersion 15min under 102 ± 1 DEG C of conditions；
(2) being placed in high-speed kneading machine by 1.4kg tourmaline powder, be 500r/min at rotating speed, temperature is mediate after 10min under 105 ± 1 DEG C of conditions, after being placed in high-speed kneading machine to mediate 10min, adds 0.11kg sodium stearate, becomes raw material II after interface modification 20min；
(3) raw material II and raw material I are placed in mixer and are mixed into compound, add 6.33.kg linear low density polyethylene (LLDPE) mixing 10min and obtain mixed material；
(4) mixed material is placed in double screw extruder, mixed material is placed in double screw extruder, controlling extruder barrel temperature: 130 DEG C of I district, 145 DEG C of II district, 155 DEG C of III district, 160 DEG C of IV district, 160 DEG C of V district, die head 155 DEG C, extrusion pelletizing is master batch.
Embodiment 4
The component of master batch is made up of linear low density polyethylene (LLDPE) 6.08kg, tourmaline powder 1.3kg, rare earth compounding 2.1kg, kieselguhr 0.3kg, oleamide 0.12kg, sodium stearate 0.10kg.
Master batch is prepared according to the following steps:
1, the preparation of rare earth compounding
(1) 2kg chitin is dissolved in 60L acetic acid solution, after stirring, adds 80L methanol; solution is no longer sticky; add acetic anhydride 1L, after reacting 1h at temperature 30 DEG C, the thick liquid of reaction gained is joined in 150L ethanol; precipitation is had to generate; leach solid, with absolute ethanol washing 3 times, then after dissolving with acetic acid solution; elimination insoluble matter, obtains acetylation chitin solution.
(2) according to lanthanum, yttrium, neodymium, the mol ratio of cerium ion is the 3.10:0.35:1.20:0.95 Lanthanum (III) nitrate weighing total amount 2kg respectively, Yttrium trinitrate, neodymium nitrate, cerous nitrate, it is dissolved in 10L distilled water, rare earth nitrate aqueous solution is slowly added dropwise to acetylation chitin solution, control rotating speed 1000r/min, temperature 25 DEG C, react 6 hours, pH value of solution is regulated to 7.0, product precipitates out with flocculent deposit form, filter after precipitate, unreacted metal ion is removed with distilled water wash, vacuum drying oven dries, grind, obtain buff powder, it is rare earth compounding.
2, the preparation of master batch
(1) by 2.1kg rare earth compounding, 0.3kg kieselguhr, composite being placed in blender, add 0.12kg oleamide, at rotating speed 250r/min, temperature is become raw material I after carrying out cladding dispersion 15min under 102 ± 1 DEG C of conditions；
(2) being placed in high-speed kneading machine by 1.3kg tourmaline powder, be 500r/min at rotating speed, temperature is mediate after 10min under 105 ± 1 DEG C of conditions, after being placed in high-speed kneading machine to mediate 10min, adds 0.10kg sodium stearate, becomes raw material II after interface modification 20min；
(3) raw material II and raw material I are placed in mixer and are mixed into compound, add 6.08kg linear low density polyethylene (LLDPE) mixing 10min and obtain mixed material；
(4) mixed material is placed in double screw extruder, mixed material is placed in double screw extruder, controlling extruder barrel temperature: 132 DEG C of I district, 150 DEG C of II district, 155 DEG C of III district, 161 DEG C of IV district, 158 DEG C of V district, die head 160 DEG C, extrusion pelletizing is master batch.
Embodiment 5
The component of master batch is made up of linear low density polyethylene (LLDPE) 6.36kg, tourmaline powder 1.2kg, rare earth compounding 2.0kg, kieselguhr 0.25kg, oleamide 0.10kg, sodium stearate 0.09kg.
Master batch is prepared according to the following steps:
1, the preparation of rare earth compounding
(1) 2kg chitin is dissolved in 60L acetic acid solution, after stirring, adds 80L methanol; solution is no longer sticky; add acetic anhydride 1L, after reacting 1h at temperature 30 DEG C, the thick liquid of reaction gained is joined in 150L ethanol; precipitation is had to generate; leach solid, with absolute ethanol washing 3 times, then after dissolving with acetic acid solution; elimination insoluble matter, obtains acetylation chitin solution.
(2) according to lanthanum, yttrium, neodymium, the mol ratio of cerium ion is the 3.10:0.35:1.20:0.95 Lanthanum (III) nitrate weighing total amount 2kg respectively, Yttrium trinitrate, neodymium nitrate, cerous nitrate, it is dissolved in 10L distilled water, rare earth nitrate aqueous solution is slowly added dropwise to acetylation chitin solution, control rotating speed 1000r/min, temperature 25 DEG C, react 6 hours, pH value of solution is regulated to 7.0, product precipitates out with flocculent deposit form, filter after precipitate, unreacted metal ion is removed with distilled water wash, vacuum drying oven dries, grind, obtain buff powder, it is rare earth compounding.
2, the preparation of master batch
(1) by 2.0kg rare earth compounding, 0.25kg kieselguhr, composite being placed in blender, add 0.10kg oleamide, at rotating speed 250r/min, temperature is become raw material I after carrying out cladding dispersion 15min under 102 ± 1 DEG C of conditions；
(2) being placed in high-speed kneading machine by 1.2kg tourmaline powder, be 500r/min at rotating speed, temperature is mediate after 10min under 105 ± 1 DEG C of conditions, after being placed in high-speed kneading machine to mediate 10min, adds 0.09kg sodium stearate, becomes raw material II after interface modification 20min；
(3) raw material II and raw material I are placed in mixer and are mixed into compound, add 6.36.kg linear low density polyethylene (LLDPE) mixing 10min and obtain mixed material；
(4) mixed material is placed in double screw extruder, mixed material is placed in double screw extruder, controlling extruder barrel temperature: 135 DEG C of I district, 150 DEG C of II district, 155 DEG C of III district, 160 DEG C of IV district, 155 DEG C of V district, die head 155 DEG C, extrusion pelletizing is master batch.
Embodiment 6
The component of master batch is made up of linear low density polyethylene (LLDPE) 6.33kg, tourmaline powder 1.4kg, rare earth compounding 1.8kg, kieselguhr 0.25kg, oleamide 0.12kg, sodium stearate 0.10kg.
Master batch is prepared according to the following steps:
1, the preparation of rare earth compounding
(1) 2kg chitin is dissolved in 60L acetic acid solution, after stirring, adds 80L methanol; solution is no longer sticky; add acetic anhydride 1L, after reacting 1h at temperature 30 DEG C, the thick liquid of reaction gained is joined in 150L ethanol; precipitation is had to generate; leach solid, with absolute ethanol washing 3 times, then after dissolving with acetic acid solution; elimination insoluble matter, obtains acetylation chitin solution.
(2) according to lanthanum, yttrium, neodymium, the mol ratio of cerium ion is the 3.10:0.35:1.20:0.95 Lanthanum (III) nitrate weighing total amount 2kg respectively, Yttrium trinitrate, neodymium nitrate, cerous nitrate, it is dissolved in 10L distilled water, rare earth nitrate aqueous solution is slowly added dropwise to acetylation chitin solution, control rotating speed 1000r/min, temperature 25 DEG C, react 6 hours, pH value of solution is regulated to 7.0, product precipitates out with flocculent deposit form, filter after precipitate, unreacted metal ion is removed with distilled water wash, vacuum drying oven dries, grind, obtain buff powder, it is rare earth compounding.
2, the preparation of master batch
(1) by 1.8kg rare earth compounding, 0.25kg kieselguhr, composite being placed in blender, add 0.12kg oleamide, at rotating speed 250r/min, temperature is become raw material I after carrying out cladding dispersion 15min under 102 ± 1 DEG C of conditions；
(2) being placed in high-speed kneading machine by 1.4kg tourmaline powder, be 500r/min at rotating speed, temperature is mediate after 10min under 105 ± 1 DEG C of conditions, after being placed in high-speed kneading machine to mediate 10min, adds 0.11kg sodium stearate, becomes raw material II after interface modification 20min；
(3) raw material II and raw material I are placed in mixer and are mixed into compound, add 6.33.kg linear low density polyethylene (LLDPE) mixing 10min and obtain mixed material；
(4) mixed material is placed in double screw extruder, mixed material is placed in double screw extruder, controlling extruder barrel temperature: 130 DEG C of I district, 145 DEG C of II district, 155 DEG C of III district, 160 DEG C of IV district, 160 DEG C of V district, die head 155 DEG C, extrusion pelletizing is master batch.
Claims (10)
1. a preparation method for the banana fresh-keeping film master batch containing rare earth compounding, is characterized in that:
The preparation of rare earth compounding
(1) vegetable polysaccharides of 2 weight portions is dissolved in the acetic acid solution of 60 weight portions; after stirring, adding the methanol of 80 weight portions, solution is no longer sticky; add the acetic anhydride of 1 weight portion; after reacting 1h at temperature 30 DEG C, the thick liquid of reaction gained is joined in the ethanol of 150 weight portions, filtering precipitate after precipitation generation; with absolute ethanol washing 3 times; after dissolving with acetic acid solution again, elimination insoluble matter, obtain acetylation vegetable polysaccharides solution；
(2) according to lanthanum, yttrium, neodymium, cerium ion mol ratio be 3.00～3.15:0.30～0.40:1.20～1.25:0.90～1.00, weigh the compound of lanthanum, the compound of yttrium, the compound of neodymium and the compound of cerium respectively and be mixed into rare earth compound, and join in distilled water with the weight part ratio of 15, obtain rare earth compound mixed aqueous solution after being entirely capable of dissolving；According to weight ratios such as vegetable polysaccharides and rare earth compounds; rare earth compound mixed aqueous solution is slowly added dropwise to acetylation vegetable polysaccharides solution; regulating reaction system pH to 7.0, react 6～7 hours under rotating speed 1000r/min, 25～30 DEG C of conditions of temperature, product precipitates out with precipitation form；Filter after precipitate, remove unreacted rare earth ion with distilled water wash, dry in vacuum drying oven, grind, obtain pulverous rare earth compounding；
The preparation of master batch
(1) by 18～21 weight portion rare earth compoundings, 2.5～3.0 weight portion kieselguhr, composite it is placed in blender, add 1.0～1.2 weight portion oleamides, being 250r/min at rotating speed, temperature is cladding dispersion under 102 ± 1 DEG C of conditions, becomes raw material I to be placed in mixer after 15min；
(2) being placed in high-speed kneading machine by 12～14 parts of tourmaline powders, be rotating speed at rotating speed be 500r/min, temperature is, after mediating 10min under 105 ± 1 DEG C of conditions, add 0.8～1.0 weight portion sodium stearate, becomes raw material II after carrying out interface modification 20min；
(3) raw material II and raw material I being placed in mixer and be mixed into compound, the LLDPE mixing 10min adding 59.8～65.7 weight portions obtains mixed material；
(4) mixed material is placed in double screw extruder extrude pelletizing be master batch.
2. the preparation method of a kind of banana fresh-keeping film master batch containing rare earth compounding according to claim 1, it is characterised in that described tourmaline powder is one or several mixture in dravite powder, schorl powder, elbaite powder, tsilaisite powder；Described tourmaline powder particle diameter is 1.3～6.5 μm.
3. the preparation method of a kind of banana fresh-keeping film master batch containing rare earth compounding according to claim 1, is characterized in that described acetic acid solution mass percent concentration is 2%.
4. the preparation method of a kind of banana fresh-keeping film master batch containing rare earth compounding according to claim 1, is characterized in that described vegetable polysaccharides includes the mixture of one or several arbitrary proportions in starch, fructose, cellulose, chitin.
5. the preparation method of a kind of banana fresh-keeping film master batch containing rare earth compounding according to claim 1, is characterized in that the one that the compound of described lanthanum is lanthanum hydroxide, lanthanum acetate, Lanthanum (III) nitrate, lanthanum chloride；The compound of described yttrium is the one of Yttrium trihydroxide, acetic acid yttrium, Yttrium trinitrate, Yttrium chloride(Y2Cl6)；The compound of described samarium is the one of Samarium trihydroxide., acetic acid samarium, samaric nitrate, samarium trichloride；The compound of described cerium is the one of cerium hydroxide, cerous acetate, cerous nitrate, cerium chloride.
6. the preparation method of a kind of banana fresh-keeping film master batch containing rare earth compounding according to claim 1, is characterized in that described rare earth compounding reaction condition is rotating speed 1000r/min, temperature 25～30 DEG C.
7. the preparation method of a kind of banana fresh-keeping film master batch containing rare earth compounding according to claim 1, is characterized in that in described cladding dispersive process, the rotating speed of blender is 250r/min, and temperature is 102 ± 1 DEG C.
8. the preparation method of a kind of banana fresh-keeping film master batch containing rare earth compounding according to claim 1, is characterized in that the rotating speed of described interfacial modification process high speed kneader is 500r/min, and temperature is 105 ± 1 DEG C.
9. the preparation method of a kind of banana fresh-keeping film master batch containing rare earth compounding according to claim 1, is characterized in that in described mixing of materials process, the rotating speed of mixer is 120r/min, and temperature is 108 ± 1 DEG C.
10. the preparation method of a kind of banana fresh-keeping film master batch containing rare earth compounding according to claim 1, it is characterized in that in described extrusion pelletizing process, twin-screw extruder barrel temperature controls in 130～140 DEG C of I district, 145～150 DEG C of II district, 150～155 DEG C of III district, 160～165 DEG C of IV district, 155～160 DEG C of V district, die head 155～160 DEG C.
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| CN105778258B (en) | 2018-04-17 |
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