CN114316339A - Antibacterial EVA (ethylene-vinyl acetate copolymer) foamed sole and preparation method thereof - Google Patents
Antibacterial EVA (ethylene-vinyl acetate copolymer) foamed sole and preparation method thereof Download PDFInfo
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- CN114316339A CN114316339A CN202111485556.0A CN202111485556A CN114316339A CN 114316339 A CN114316339 A CN 114316339A CN 202111485556 A CN202111485556 A CN 202111485556A CN 114316339 A CN114316339 A CN 114316339A
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- 239000005038 ethylene vinyl acetate Substances 0.000 title claims abstract description 51
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 title claims abstract description 51
- 230000000844 anti-bacterial effect Effects 0.000 title claims abstract description 47
- 238000002360 preparation method Methods 0.000 title claims abstract description 22
- 239000000843 powder Substances 0.000 claims abstract description 44
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 42
- 239000000945 filler Substances 0.000 claims abstract description 35
- 239000000463 material Substances 0.000 claims abstract description 30
- 239000011032 tourmaline Substances 0.000 claims abstract description 26
- 229940070527 tourmaline Drugs 0.000 claims abstract description 26
- 229910052613 tourmaline Inorganic materials 0.000 claims abstract description 26
- 239000004575 stone Substances 0.000 claims abstract description 24
- 239000002994 raw material Substances 0.000 claims abstract description 22
- 239000011787 zinc oxide Substances 0.000 claims abstract description 21
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 17
- 239000004088 foaming agent Substances 0.000 claims abstract description 17
- YTXCAJNHPVBVDJ-UHFFFAOYSA-N octadecyl propanoate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)CC YTXCAJNHPVBVDJ-UHFFFAOYSA-N 0.000 claims abstract description 17
- GJBRNHKUVLOCEB-UHFFFAOYSA-N tert-butyl benzenecarboperoxoate Chemical compound CC(C)(C)OOC(=O)C1=CC=CC=C1 GJBRNHKUVLOCEB-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000002270 dispersing agent Substances 0.000 claims abstract description 14
- 239000000203 mixture Substances 0.000 claims abstract description 13
- LYOFHYLVYHTGBK-UHFFFAOYSA-N 4-chloro-1,5-dimethylcyclohexa-2,4-dien-1-ol Chemical compound CC1=C(Cl)C=CC(C)(O)C1 LYOFHYLVYHTGBK-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229920005549 butyl rubber Polymers 0.000 claims abstract description 10
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000000835 fiber Substances 0.000 claims abstract description 9
- 229910052709 silver Inorganic materials 0.000 claims abstract description 9
- 239000004332 silver Substances 0.000 claims abstract description 9
- 238000005187 foaming Methods 0.000 claims description 30
- 238000002347 injection Methods 0.000 claims description 16
- 239000007924 injection Substances 0.000 claims description 16
- 239000002245 particle Substances 0.000 claims description 13
- ZFOZVQLOBQUTQQ-UHFFFAOYSA-N Tributyl citrate Chemical compound CCCCOC(=O)CC(O)(C(=O)OCCCC)CC(=O)OCCCC ZFOZVQLOBQUTQQ-UHFFFAOYSA-N 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 6
- 239000008187 granular material Substances 0.000 claims description 5
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical group C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 claims description 3
- 239000004156 Azodicarbonamide Substances 0.000 claims description 3
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical group [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 3
- XOZUGNYVDXMRKW-AATRIKPKSA-N azodicarbonamide Chemical group NC(=O)\N=N\C(N)=O XOZUGNYVDXMRKW-AATRIKPKSA-N 0.000 claims description 3
- 235000019399 azodicarbonamide Nutrition 0.000 claims description 3
- 238000003801 milling Methods 0.000 claims description 3
- 239000003242 anti bacterial agent Substances 0.000 claims 1
- 230000003115 biocidal effect Effects 0.000 claims 1
- 238000001179 sorption measurement Methods 0.000 abstract description 6
- 241000894006 Bacteria Species 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 150000002500 ions Chemical class 0.000 abstract description 3
- 230000000052 comparative effect Effects 0.000 description 8
- 238000005054 agglomeration Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- OSDLLIBGSJNGJE-UHFFFAOYSA-N 4-chloro-3,5-dimethylphenol Chemical compound CC1=CC(O)=CC(C)=C1Cl OSDLLIBGSJNGJE-UHFFFAOYSA-N 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
- 239000004831 Hot glue Substances 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001877 deodorizing effect Effects 0.000 description 1
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical group O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920006280 packaging film Polymers 0.000 description 1
- 239000012785 packaging film Substances 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
An antibacterial EVA foamed sole and a preparation method thereof, wherein the antibacterial EVA foamed sole is composed of the following raw materials: ethylene-vinyl acetate copolymer, butyl rubber, antibacterial silver fiber, p-chloro-m-dimethylphenol, a foaming agent, a cross-linking agent, octadecyl propionate, tert-butyl peroxybenzoate, a filler and a dispersing agent, wherein by limiting the specific composition of the filler, diatom ooze is taken as a base material, tourmaline powder, zinc oxide and medical stone powder are matched, the medical stone has a strong adsorption effect on bacteria, and tourmaline and diatom ooze can release negative ions, so that the filler plays a role of the filler, and the prepared foamed sole has excellent antibacterial performance; and countless tiny gaps are formed on the surface of the diatom ooze, so that the diatom ooze has extremely strong physical adsorption capacity, and tourmaline powder, zinc oxide and medical stone powder are adsorbed in the gaps, so that the overall antibacterial performance of the foamed sole is stabilized.
Description
Technical Field
The invention belongs to the field of sole preparation, and particularly relates to an antibacterial EVA (ethylene vinyl acetate copolymer) foamed sole and a preparation method thereof.
Background
EVA, an ethylene-vinyl acetate copolymer, is prepared by copolymerizing ethylene and vinyl acetate, and is widely used in the fields of foamed shoe materials, functional greenhouse films, packaging films, hot melt adhesives, electric wires and cables, toys, and the like. The EVA foaming sole material has a certain buffering effect, is soft in texture, and can still keep good flexibility below zero DEG C; in addition, they are excellent in chemical stability, aging resistance and ozone resistance, but they are required to be further improved in terms of antibacterial and deodorizing properties.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide an antibacterial EVA foamed sole, and also aims to provide a preparation method of the foamed sole.
The invention adopts the following technical scheme:
an antibacterial EVA foamed sole is composed of the following raw materials in parts by weight: 55-70 parts of ethylene-vinyl acetate copolymer, 20-30 parts of butyl rubber, 5-7 parts of antibacterial silver fiber, 0.5-1 part of p-chloro-m-dimethylphenol, 4-9 parts of foaming agent, 1-3 parts of crosslinking agent, 0.5-1.2 parts of octadecyl propionate, 0.3-0.7 part of tert-butyl peroxybenzoate, 10-15 parts of filler and 1-2 parts of dispersing agent;
the filler is composed of the following raw materials in parts by weight: 50-60 parts of diatom ooze, 15-25 parts of tourmaline powder, 5-8 parts of zinc oxide and 5-10 parts of medical stone powder.
Further, the foaming agent is azodicarbonamide.
Further, the cross-linking agent is dicumyl peroxide.
Further, the dispersing agent is sodium dodecyl sulfate.
Furthermore, the length of the antibacterial silver fiber is 4-8mm, and the diameter of the antibacterial silver fiber is 60-70 um.
A preparation method of an antibacterial EVA foamed sole comprises the following steps:
feeding diatom ooze, tourmaline powder, zinc oxide, medical stone powder and a dispersing agent into stirring equipment, and stirring for 10-15min at the rotating speed of 200-300 r/min;
preparing the ethylene-vinyl acetate copolymer, butyl rubber, a foaming agent, a cross-linking agent, octadecyl propionate, tert-butyl peroxybenzoate, tributyl citrate, p-chloro-m-dimethylphenol and the filler treated in the step one into foaming material particles;
and step three, pouring the foaming material particles into an EVA injection machine, and injecting once to obtain the antibacterial EVA foaming sole.
Further, the temperature of the injection machine is 160-.
Further, in the second step, the preparation method of the foaming granule comprises the following steps: firstly, mixing other raw materials except a foaming agent, a cross-linking agent, octadecyl propionate and tert-butyl peroxybenzoate, then banburying, adjusting the temperature to 85 ℃, keeping for 3min, and then turning for the first time; when the temperature rises to 92 ℃, turning materials for the second time; continuously heating to 96 ℃, adding a foaming agent, a crosslinking agent, octadecyl propionate and tert-butyl peroxybenzoate, and turning for the third time; continuously heating to 105 ℃, and turning for the fourth time; and continuously heating to 108 ℃, turning materials for the sixth time, banburying for 2min, pouring materials, milling and granulating to obtain the foaming material granules.
As can be seen from the above description of the present invention, compared with the prior art, the beneficial effects of the present invention are:
firstly, the specific composition of the filler is limited, diatom ooze is used as a base material, tourmaline powder, zinc oxide and medical stone powder are matched, the medical stone has a strong adsorption effect on bacteria, and the tourmaline and the diatom ooze can release negative ions, so that the filler plays a role of the filler, and the prepared foamed sole has excellent antibacterial performance; countless tiny gaps are formed on the surface of the diatom ooze, so that the diatom ooze has extremely strong physical adsorption capacity, tourmaline powder, zinc oxide and medical stone powder are adsorbed in the gaps, and the overall antibacterial performance of the foamed sole is stabilized;
secondly, adding parachlorometaxylenol and matching with the antibacterial silver fibers, so that the antibacterial performance of the prepared foamed sole is further improved;
thirdly, before the filler is used, the dispersant is added and stirred, so that all components of the filler are uniformly mixed, the agglomeration phenomenon of tourmaline powder is reduced, the tourmaline powder, medical stone powder and zinc oxide are uniformly adsorbed in pores of diatom ooze, the integral antibacterial performance of the prepared foamed sole is ensured, and the antibacterial effect is remarkable;
fourthly, adding the octadecyl propionate to ensure that the blend is stably foamed at a limited foaming temperature so as to obtain a closed cell structure with uniform size and no communication, and improving the overall performance of the prepared foamed sole; tert-butyl peroxybenzoate is added to promote the foaming efficiency of the blend at a defined foaming temperature, reducing the foaming time.
Detailed Description
The invention is further described below by means of specific embodiments.
An antibacterial EVA foamed sole is composed of the following raw materials in parts by weight: 55-70 parts of ethylene-vinyl acetate copolymer, 20-30 parts of butyl rubber, 5-7 parts of antibacterial silver fiber, 0.5-1 part of p-chloro-m-dimethylphenol, 4-9 parts of azodicarbonamide, 1-3 parts of dicumyl peroxide, 0.5-1.2 parts of octadecyl propionate, 0.3-0.7 part of tert-butyl peroxybenzoate, 10-15 parts of filler and 1-2 parts of sodium dodecyl sulfate.
Wherein, the filler is composed of the following raw materials in parts by weight: 50-60 parts of diatom ooze, 15-25 parts of tourmaline powder, 5-8 parts of zinc oxide and 5-10 parts of medical stone powder.
The length of the antibacterial silver fiber is 4-8mm, and the diameter is 60-70 um.
A preparation method of an antibacterial EVA foamed sole comprises the following steps:
feeding diatom ooze, tourmaline powder, zinc oxide, medical stone powder and a dispersing agent into stirring equipment, and stirring for 10-15min at the rotating speed of 200-300 r/min;
preparing the ethylene-vinyl acetate copolymer, butyl rubber, a foaming agent, a cross-linking agent, octadecyl propionate, tert-butyl peroxybenzoate, tributyl citrate, p-chloro-m-dimethylphenol and the filler treated in the step one into foaming material particles;
pouring the foaming material particles into an EVA injection machine, and performing primary injection to obtain the antibacterial EVA foaming sole, wherein the temperature of the injection machine is 160-.
Specifically, in the second step, the preparation method of the foaming granule comprises the following steps: firstly, mixing other raw materials except a foaming agent, a cross-linking agent, octadecyl propionate and tert-butyl peroxybenzoate, then banburying, adjusting the temperature to 85 ℃, keeping for 3min, and then turning for the first time; when the temperature rises to 92 ℃, turning materials for the second time; continuously heating to 96 ℃, adding a foaming agent, a crosslinking agent, octadecyl propionate and tert-butyl peroxybenzoate, and turning for the third time; continuously heating to 105 ℃, and turning for the fourth time; and continuously heating to 108 ℃, turning materials for the sixth time, banburying for 2min, pouring materials, milling and granulating to obtain the foaming material granules.
Examples
Each example and comparative example was prepared with reference to the parameters in Table 1 (unit: g)
Table 1 table of raw material addition
Example 1
The antibacterial foamed EVA sole is shown in table 1, wherein the filler is prepared from the following raw materials in parts by weight: 50 parts of diatom ooze, 25 parts of tourmaline powder, 5 parts of zinc oxide and 10 parts of medical stone powder.
The preparation process comprises the following steps:
feeding diatom ooze, tourmaline powder, zinc oxide, medical stone powder and a dispersing agent into stirring equipment, and stirring for 15min at a rotating speed of 200 r/min;
preparing the ethylene-vinyl acetate copolymer, butyl rubber, a foaming agent, a cross-linking agent, octadecyl propionate, tert-butyl peroxybenzoate, tributyl citrate, p-chloro-m-dimethylphenol and the filler treated in the step one into foaming material particles;
pouring the foaming material particles into an EVA injection machine, and performing one-time injection to obtain the antibacterial EVA foaming sole, wherein the temperature of the injection machine is 160 ℃, the temperature of the mould is 160 ℃, and the time is 225 s.
Example 2
The antibacterial foamed EVA sole is shown in table 1, wherein the filler is prepared from the following raw materials in parts by weight: 60 parts of diatom ooze, 15 parts of tourmaline powder, 8 parts of zinc oxide and 5 parts of medical stone powder.
The preparation process comprises the following steps:
feeding diatom ooze, tourmaline powder, zinc oxide, medical stone powder and a dispersing agent into stirring equipment, and stirring for 10min at the rotating speed of 300 r/min;
preparing the ethylene-vinyl acetate copolymer, butyl rubber, a foaming agent, a cross-linking agent, octadecyl propionate, tert-butyl peroxybenzoate, tributyl citrate, p-chloro-m-dimethylphenol and the filler treated in the step one into foaming material particles;
pouring the foaming material particles into an EVA injection machine, and performing one-time injection to obtain the antibacterial EVA foaming sole, wherein the temperature of the injection machine is 180 ℃, the temperature of the mold is 180 ℃, and the time is 205 s.
Example 3
The antibacterial foamed EVA sole is shown in table 1, wherein the filler is prepared from the following raw materials in parts by weight: 55 parts of diatom ooze, 20 parts of tourmaline powder, 6 parts of zinc oxide and 7 parts of medical stone powder.
The preparation process comprises the following steps:
feeding diatom ooze, tourmaline powder, zinc oxide, medical stone powder and a dispersing agent into stirring equipment, and stirring for 12min at a rotating speed of 250 r/min;
preparing the ethylene-vinyl acetate copolymer, butyl rubber, a foaming agent, a cross-linking agent, octadecyl propionate, tert-butyl peroxybenzoate, tributyl citrate, p-chloro-m-dimethylphenol and the filler treated in the step one into foaming material particles;
pouring the foaming material particles into an EVA injection machine, and performing one-time injection to obtain the antibacterial EVA foaming sole, wherein the temperature of the injection machine is 170 ℃, the temperature of the mold is 170 ℃, and the time is 215 s.
Comparative example 1
The raw material composition and the preparation method are basically the same as those of the example 3, and the differences are as follows: the filler is diatom ooze.
Comparative example 2
The raw material composition and the preparation method are basically the same as those of the example 3, and the differences are as follows: the filler is tourmaline powder.
Comparative example 3
The raw material composition and the preparation method are basically the same as those of the example 3, and the differences are as follows: the filler is medical stone powder.
Comparative example 4
The raw material composition and the preparation method are basically the same as those of the example 3, and the differences are as follows: the filler is talcum powder.
Comparative example 5
The raw material composition and the preparation method are basically the same as those of the example 3, and the differences are as follows: the filler is composed of the following raw materials in parts by weight: 55 parts of diatom ooze and 7 parts of zinc oxide.
Comparative example 6
The raw material composition and the preparation method are basically the same as those of the example 3, and the differences are as follows: the preparation method does not comprise the step one of pretreating the filler; and the raw material composition does not include a dispersant.
The foamed EVA soles prepared according to the above examples and comparative examples were tested accordingly to obtain the following data, which are shown in table 2.
The antibacterial rate of the antibacterial EVA foamed shoe is measured by referring to a vibration flask method 1 in disinfection technical specifications issued by the ministry of health in 2002 of China in 11 months.
TABLE 2 Performance parameter Table for each example
In conclusion, the invention limits the specific composition of the filler, takes the diatom ooze as a base material, and is matched with the tourmaline powder, the zinc oxide and the medical stone powder, the medical stone has stronger adsorption effect on bacteria, and the tourmaline and the diatom ooze can release negative ions, so that the filler plays a role of the filler, and the prepared foamed sole has excellent antibacterial performance; countless tiny gaps are formed on the surface of the diatom ooze, so that the diatom ooze has extremely strong physical adsorption capacity, tourmaline powder, zinc oxide and medical stone powder are adsorbed in the gaps, and the overall antibacterial performance of the foamed sole is stabilized; before the filler is used, the dispersant is added and stirred, so that all components of the filler are uniformly mixed, the agglomeration phenomenon of tourmaline powder is reduced, the tourmaline powder, medical stone powder and zinc oxide are uniformly adsorbed in pores of diatom ooze, the integral antibacterial performance of the prepared foamed sole is ensured, and the antibacterial effect is remarkable.
The above description is only a preferred embodiment of the present invention, and therefore should not be taken as limiting the scope of the invention, which is defined by the appended claims and their equivalents and modifications within the scope of the description.
Claims (8)
1. The utility model provides an antibiotic EVA foaming sole which characterized in that: the composition is characterized by comprising the following raw materials in parts by weight: 55-70 parts of ethylene-vinyl acetate copolymer, 20-30 parts of butyl rubber, 5-7 parts of antibacterial silver fiber, 0.5-1 part of p-chloro-m-dimethylphenol, 4-9 parts of foaming agent, 1-3 parts of crosslinking agent, 0.5-1.2 parts of octadecyl propionate, 0.3-0.7 part of tert-butyl peroxybenzoate, 10-15 parts of filler and 1-2 parts of dispersing agent;
the filler is composed of the following raw materials in parts by weight: 50-60 parts of diatom ooze, 15-25 parts of tourmaline powder, 5-8 parts of zinc oxide and 5-10 parts of medical stone powder.
2. The antibacterial EVA foamed sole according to claim 1, wherein: the foaming agent is azodicarbonamide.
3. The antibacterial EVA foamed sole according to claim 2, wherein: the cross-linking agent is dicumyl peroxide.
4. The antibacterial EVA foamed sole according to claim 1, wherein: the dispersing agent is sodium dodecyl sulfate.
5. The antibacterial EVA foamed sole according to claim 1, wherein: the length of the antibacterial silver fiber is 4-8mm, and the diameter is 60-70 um.
6. A preparation method of an antibacterial EVA foamed sole is characterized by comprising the following steps: the method comprises the following steps:
feeding diatom ooze, tourmaline powder, zinc oxide, medical stone powder and a dispersing agent into stirring equipment, and stirring for 10-15min at the rotating speed of 200-300 r/min;
preparing the ethylene-vinyl acetate copolymer, butyl rubber, a foaming agent, a cross-linking agent, octadecyl propionate, tert-butyl peroxybenzoate, tributyl citrate, p-chloro-m-dimethylphenol and the filler treated in the step one into foaming material particles;
and step three, pouring the foaming material particles into an EVA injection machine, and injecting once to obtain the antibacterial EVA foaming sole.
7. The method for preparing the EVA foamed shoe sole according to claim 6, wherein the method comprises the following steps: the temperature of the injection machine is 160-180 ℃, the temperature of the mold is 160-180 ℃, and the time is 205-225 s.
8. The method for preparing the EVA foamed shoe sole according to claim 6, wherein the method comprises the following steps: the preparation method of the foaming material particles comprises the following steps: firstly, mixing other raw materials except a foaming agent, a cross-linking agent, octadecyl propionate and tert-butyl peroxybenzoate, then banburying, adjusting the temperature to 85 ℃, keeping for 3min, and then turning for the first time; when the temperature rises to 92 ℃, turning materials for the second time; continuously heating to 96 ℃, adding a foaming agent, a crosslinking agent, octadecyl propionate and tert-butyl peroxybenzoate, and turning for the third time; continuously heating to 105 ℃, and turning for the fourth time; and continuously heating to 108 ℃, turning materials for the sixth time, banburying for 2min, pouring materials, milling and granulating to obtain the foaming material granules.
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| CN114957845A (en) * | 2022-05-09 | 2022-08-30 | 茂泰(福建)鞋材有限公司 | Light antibacterial high-elasticity EVA foamed sole and preparation method thereof |
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