CN103160078A - Nanometer zinc oxide (ZnO) antibacterial glass steel packing box and preparation method thereof - Google Patents
Nanometer zinc oxide (ZnO) antibacterial glass steel packing box and preparation method thereof Download PDFInfo
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- CN103160078A CN103160078A CN2013100521057A CN201310052105A CN103160078A CN 103160078 A CN103160078 A CN 103160078A CN 2013100521057 A CN2013100521057 A CN 2013100521057A CN 201310052105 A CN201310052105 A CN 201310052105A CN 103160078 A CN103160078 A CN 103160078A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 11
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- 239000010959 steel Substances 0.000 title abstract description 8
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 title abstract 14
- 238000012856 packing Methods 0.000 title abstract 6
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- 229910052799 carbon Inorganic materials 0.000 claims description 21
- 229920005989 resin Polymers 0.000 claims description 20
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- 230000003078 antioxidant effect Effects 0.000 claims description 19
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- 229920000647 polyepoxide Polymers 0.000 claims description 17
- 239000007788 liquid Substances 0.000 claims description 16
- 239000004593 Epoxy Substances 0.000 claims description 15
- 239000012792 core layer Substances 0.000 claims description 15
- 125000003700 epoxy group Chemical group 0.000 claims description 15
- -1 Xylo-Mucine Substances 0.000 claims description 12
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- 239000002984 plastic foam Substances 0.000 claims description 8
- 238000007711 solidification Methods 0.000 claims description 7
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- 230000015572 biosynthetic process Effects 0.000 claims description 6
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- 238000000465 moulding Methods 0.000 claims description 5
- PRWJPWSKLXYEPD-UHFFFAOYSA-N 4-[4,4-bis(5-tert-butyl-4-hydroxy-2-methylphenyl)butan-2-yl]-2-tert-butyl-5-methylphenol Chemical group C=1C(C(C)(C)C)=C(O)C=C(C)C=1C(C)CC(C=1C(=CC(O)=C(C=1)C(C)(C)C)C)C1=CC(C(C)(C)C)=C(O)C=C1C PRWJPWSKLXYEPD-UHFFFAOYSA-N 0.000 claims description 4
- 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 4
- 239000006185 dispersion Substances 0.000 claims description 4
- 125000003916 ethylene diamine group Chemical group 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 4
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- 239000006260 foam Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 238000002791 soaking Methods 0.000 claims description 3
- OWRCNXZUPFZXOS-UHFFFAOYSA-N 1,3-diphenylguanidine Chemical compound C=1C=CC=CC=1NC(=N)NC1=CC=CC=C1 OWRCNXZUPFZXOS-UHFFFAOYSA-N 0.000 claims description 2
- 239000011787 zinc oxide Substances 0.000 abstract 6
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 abstract 2
- 239000001768 carboxy methyl cellulose Substances 0.000 abstract 2
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- 241000228245 Aspergillus niger Species 0.000 description 1
- 229930182555 Penicillin Natural products 0.000 description 1
- JGSARLDLIJGVTE-MBNYWOFBSA-N Penicillin G Chemical compound N([C@H]1[C@H]2SC([C@@H](N2C1=O)C(O)=O)(C)C)C(=O)CC1=CC=CC=C1 JGSARLDLIJGVTE-MBNYWOFBSA-N 0.000 description 1
- 241000228143 Penicillium Species 0.000 description 1
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- 241000589517 Pseudomonas aeruginosa Species 0.000 description 1
- 102100037486 Reverse transcriptase/ribonuclease H Human genes 0.000 description 1
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- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
Abstract
The invention relates to a packing box, in particular to a nanometer zinc oxide (ZnO) antibacterial glass steel packing box and a preparation method of the nanometer ZnO antibacterial glass steel packing box. The nanometer ZnO antibacterial glass steel packing box comprises a box body and is characterized in that the box body is provided with an antibacterial glue layer which is formed by antibacterial glue in a vacuum pouring mode, the antibacterial glue comprises nanometer ZnO power, sodium carboxymethylcellulose, liquid epoxy resin, antioxidants, accelerants and curling agent, wherein the nanometer ZnO power is modified by titanate coupling agents. The mass radio of the nanometer ZnO power after being modified by the titanate coupling agents to the sodium carboxymethylcellulose to the antioxidants to the accelerant to the curling agent is 100 : (0.3-1) : (1-5) : (0.1-0.5) : (1-5) : (0.1-3). The nanometer ZnO antibacterial glass steel packing box has a good antibacterial effect, and can adapt to a humid and salt-mist marine climate.
Description
Technical field
The present invention relates to a kind of tr, be specifically related to a kind of nano-ZnO antibacterial glass reinforced plastic tr and preparation method thereof.
Background technology
The characteristics such as glass reinforced plastic has light weight, specific tenacity is high, anti-fatigue performance good, chemical resistance is good and designability is good are widely used in every field.In recent years, adopt glass-reinforced plastic material make various materials national defence and civilian aspect use more and morely.Under the oceanic climate environment, five large bacterial classifications are deceived the blue or green bacterium of aspergillus, yellow aspergillus, variegated aspergillus, rope form, chaetomium globosum is easy to deposit in places such as boats and ships, warehouses and breeds on tr, destroy tr surface and bulk material thereof, cause the glass reinforced plastic tr badly damaged, affect the applying working condition of tr, and then affect the safety of depositing object in tr.Therefore, the antibacterial research of reinforced glass ladle vanning under ocean environment reduces the loss of tr, and these have important strategic importance to the glass reinforced plastic tr in the application of marine field and other association area.
In recent years, the antibiotic glass product made from steel more and more receives numerous scientific workers' concern, and a Japanese company succeeds in developing a kind of SMC material with germ resistance.The glass reinforced plastic bathtub that uses this material to make to have germ resistance.The germ resistance gel coating resin that the artificial marble that 2 kinds of trade marks are called respectively polyset4718 and polyset4719 is used has good germ resistance.The U.S. one company uses the auspicious fiber of silver-plated glass to make the auspicious steel of glass, and the glass fiber reinforced plastics product of making like this has germicidal action, can use in hospital.Japan's one electric corporation sticks the frp layer that one deck has germicidal action on the surface of the glass fiber reinforced plastics products such as electric installation, trolley part, furniture, refrigerator, can make these glass fiber reinforced plastics products have germ resistance.The auspicious steel upper layer of glass with germicidal action is made by glasscloth and the poly-vinegar resin of the compound of argentiferous.After the polymer emulsion take the propylene vinegar as main ingredient and the even mixing of ceramic powder, be sprayed on glass fibre non-woven fabric or glasscloth, just they can be cut into the wall floor tile of desired size after resin solidification, use the wall floor tile that this method is made to use in hospital, because they have very strong germicidal action to Pseudomonas aeruginosa and resistance to penicillin streptococcus aureus.But the antibacterial research of glass reinforced plastic tr under ocean environment at home and abroad not yet reported on publication.
Summary of the invention
The object of the present invention is to provide a kind of nano-ZnO antibacterial glass reinforced plastic tr and preparation method thereof, this tr has good antibacterial effect, can adapt to oceanic climate moist, salt fog.
For achieving the above object, the technical solution used in the present invention is: a kind of nano-ZnO antibacterial glass reinforced plastic tr, comprise casing, it is characterized in that casing is provided with antibiotic glue-line, described antibiotic glue-line forms by comprising the antibiosis rubber vacuum pouring that nano ZnO powder, Xylo-Mucine, liquid epoxies, antioxidant, promotor and solidifying agent that titanate coupling agent modified crosses form; Wherein, the mass ratio of nano ZnO powder, Xylo-Mucine, antioxidant, promotor and the solidifying agent crossed of liquid epoxies, titanate coupling agent modified is 100:0.3-1: 1-5: 0.1-0.5: 1-5:0.1-3.
Described antioxidant is antioxidant CA or antioxidant 1010; Described promotor is ethylene diamine, accelerant A-1, accelerant A-33 or vulkacit D C-829; Described solidifying agent is Epon HPT solidifying agent 1061 or solidifying agent 1062.
Described casing comprises fabric reinforcement, stiffening web, the first composite bed, core layer, multiaxis layer of cloth and the second composite bed, and fabric reinforcement, stiffening web, the first composite bed, core layer, multiaxis layer of cloth and the second composite bed are arranged to one from the inside to the outside successively.
Described stiffening web is comprised of plastic foam plate and the layer of fibers laid on described plastic foam plate.
Described the first composite bed comprises 1-3 layer glasscloth or the carbon cloth with resin solidification.
Described core layer is PU or PVC foamed plastic plate.
Described the second composite bed comprises layer of glass cloth or the carbon cloth after resin solidification.
The preparation method of above-mentioned a kind of nano-ZnO antibacterial glass reinforced plastic tr is characterized in that comprising the steps:
1) according to the size of tr, mfg. moulding die;
2) lay one or more layers glasscloth or carbon cloth at dies cavity, with the fixing fabric reinforcement that forms of resin compounded;
3) lay stiffening web on the fabric reinforcement after curing, and add foam fix on stiffening web;
4) lay 1-3 layer glasscloth or carbon cloth on stiffening web, solidify this 1-3 layer glasscloth or carbon cloth formation the first composite bed with resin compounded;
5) establish core on the first composite bed, form the core layer; Lay three layers of axle cloth on the core layer, form the multiaxis layer of cloth; Lay layer of glass cloth or carbon cloth on the multiaxis layer of cloth, solidify this layer of glass cloth or carbon cloth formation the second composite bed with resin compounded;
7) vacuum impregnating antibiosis rubber:
The preparation of antibiosis rubber: the mass ratio of nano ZnO powder, Xylo-Mucine, antioxidant, promotor and the solidifying agent of crossing by liquid epoxies, titanate coupling agent modified is 100:0.3-1: 1-5: 0.1-0.5: 1-5:0.1-3, chooses nano ZnO powder, Xylo-Mucine, liquid epoxies, antioxidant, promotor and solidifying agent that titanate coupling agent modified is crossed;
Nano ZnO powder with titanate coupling agent modified is crossed adds Xylo-Mucine, is uniformly dispersed under ul-trasonic irradiation, join liquid epoxies, then use the ultrasonic wave Uniform Dispersion, then add antioxidant, promotor and solidifying agent, mix, obtain antibiosis rubber;
Injecting glue: vacuum pouring antibiosis rubber in the mould (adopt the vacuum pouring method, form antibiotic glue-line on casing);
8) solidify: be heated to 70-80 ℃, soaking time 30-50 minute, after treating its exothermic peak, temperature dropped to 40 ℃ and closes vacuum pump (vacuum pump of vacuum pouring);
9) demoulding obtains nano-ZnO antibacterial glass reinforced plastic tr.
The invention has the beneficial effects as follows: 1, from the material aspect, owing to having added nano-ZnO in the epoxy resin that uses in the injecting glue step, epoxy resin modification is become antibiosis rubber, like this after injecting glue, casing all has anti-microbial property from inside to outside, promotes the anti-microbial property of tr.2, on structure, casing adopts MULTILAYER COMPOSITE and sandwich structure, can effectively realize lightweight and improve anti-seismic performance, and the intensity of casing also is improved, and can expand the use range of this type of casing.3, can adapt to oceanic climate moist, salt fog, can better protection package vanning inner matter thereby reach, extend tr work-ing life, reduce simultaneously under oceanic climate the product stock cost and extend maintenance cycle.
Embodiment
A kind of nano-ZnO antibacterial glass reinforced plastic tr, comprise casing, casing is provided with antibiotic glue-line, and described antibiotic glue-line forms by comprising the antibiosis rubber vacuum pouring that nano ZnO powder, Xylo-Mucine, liquid epoxies, antioxidant, promotor and solidifying agent that titanate coupling agent modified crosses form; Wherein, the mass ratio of nano ZnO powder, Xylo-Mucine, antioxidant, promotor and the solidifying agent crossed of liquid epoxies, titanate coupling agent modified is 100:0.3-1: 1-5: 0.1-0.5: 1-5:0.1-3.
The nano ZnO powder that described titanate coupling agent modified is crossed can adopt＜the dispersion and surface modification research of the nano zine oxide〉(author: Liu Jia who delivers " inorganic chemicals industry " the 42nd the 8th phase of volume, in August, 2010; Zhang Linjin; Ye Xuchu).Also can adopt other to adopt titanate coupling agent to carry out to nano ZnO powder the nano ZnO powder that titanate coupling agent modified that modification obtains is crossed.
Described antioxidant is antioxidant CA or antioxidant 1010; Described promotor is ethylene diamine, A-1, A-33 or DC-829; Described solidifying agent is Epon HPT solidifying agent 1061 or 1062.
Described casing comprises fabric reinforcement, stiffening web, the first composite bed, core layer, multiaxis layer of cloth and the second composite bed, and fabric reinforcement, stiffening web, the first composite bed, core layer, multiaxis layer of cloth and the second composite bed are arranged to one from the inside to the outside successively.
Described stiffening web is comprised of plastic foam plate and the layer of fibers laid on described plastic foam plate.
The first composite bed comprises 1-3 layer glasscloth or the carbon cloth with resin solidification.
Described core layer is PU or PVC foamed plastic plate.
The second composite bed comprises layer of glass cloth or the carbon cloth after resin solidification.
The preparation method of above-mentioned a kind of nano-ZnO antibacterial glass reinforced plastic tr comprises the steps:
Step 1: according to size and the design requirements of tr, mfg. moulding die (for moulding is prepared);
Step 2: lay one or more layers glasscloth or carbon cloth at dies cavity, with the fixing fabric reinforcement that forms of resin compounded;
Step 3: lay stiffening web (casing stiffening web) on the fabric reinforcement after curing, and add foam fix on stiffening web;
In one embodiment, the stiffening web material is exactly to lay matrix material on the fiber-reinforced layer after curing, generally lays plastic foam plate, then lays fiber on plastic foam plate;
Step 4: lay 1-3 layer glasscloth or carbon cloth on stiffening web, solidify this 1-3 layer glasscloth or carbon cloth formation the first composite bed with resin compounded;
Step 5: establish core on the first composite bed, form the core layer; Lay three layers of axle cloth on the core layer, form the multiaxis layer of cloth; Lay layer of glass cloth or carbon cloth on the multiaxis layer of cloth, solidify this layer of glass cloth or carbon cloth formation the second composite bed with resin compounded; In one embodiment, core is PU or PVC foamed plastic plate;
Step 6: lay the auxiliary material of vacuum, vacuum suction, pressurize are installed and are rushed nitrogen equipment (can not establish this step, decide according to user's needs);
Step 7: vacuum impregnating antibiosis rubber
(a) gel test: will first carry out gel test according to humiture at that time before injecting glue, to determine solidifying agent at that time, the addition of promotor; The interpolation of solidifying agent should be guaranteed the gel time 30-50min of lid, the gel time 50-80min of casing;
(b) preparation of antibiosis rubber: the mass ratio of nano ZnO powder, Xylo-Mucine, antioxidant, promotor and the solidifying agent of crossing by liquid epoxies, titanate coupling agent modified is 100:0.3-1: 1-5: 0.1-0.5: 1-5:0.1-3, chooses nano ZnO powder, Xylo-Mucine, liquid epoxies, antioxidant, promotor and solidifying agent that titanate coupling agent modified is crossed;
Get the nano ZnO powder that titanate coupling agent modified is crossed, add Xylo-Mucine, be uniformly dispersed under ul-trasonic irradiation, join liquid epoxies, super to the nano-ZnO Uniform Dispersion with ultrasonic wave; Add antioxidant, promotor and solidifying agent in this liquid, mix, obtain antibiosis rubber, standby.In one embodiment, antioxidant is antioxidant CA or antioxidant 1010.In one embodiment, promotor is ethylene diamine, A-1, A-33 or DC-829.In one embodiment, solidifying agent is Epon HPT solidifying agent 1061 or 1062.
(c) the vacuum pouring antibiosis rubber (adopts the vacuum pouring method in the mould, form antibiotic glue-line on casing): the injected rubber hose of intercepting sufficient length, one end is first put in the resin barrel for preparing (in antibiosis rubber is arranged), the other end is wrapped with two or three layer of joint strip apart from about port 2cm, insert after twining that in glue-injection base, (glue-injection base is positioned at mould, the casing of moulding also is positioned at mould), and the joint strip sealing that twines with port simultaneously, the insertion sequence of gum-injecting port is from inside outwards, when the antibiosis rubber of first runner on injector surpasses second runner on injector fully, can open second runner, need close first runner in the time of the 3rd runner on the unlatching injector, the like, injected rubber hose only need to keep two injecting glues at the same time.During the cast antibiosis rubber, form vacuum state in mould.
Step 8: solidify: after the required glass of product is soaked into by antibiosis rubber (resin) fully in die cavity, close all runners and stop injecting antibiosis rubber.Antibiosis rubber will begin to heat up subsequently, be heated to 70-80 ℃, soaking time 30-50 minute, treat its exothermic peak later temperature drop to 40 ℃ of left and right and close vacuum pump, tear the auxiliary material of vacuum.Exothermic peak is after the vacuum injection molding injecting glue, the exothermic maximum point in curing and exothermic process.
Step 9: the demoulding, and carry out surface treatment, mark, obtain nano-ZnO antibacterial glass reinforced plastic tr.
Antibacterial tests:
(a) Antibacterial Mechanism of nano zine oxide is summarized as 2 kinds: (1) photocatalysis antibacterial mechanism, be that nano zine oxide is under the irradiation of sunlight especially UV-light, can decomposite voluntarily electronegative electronics in water and air, stayed simultaneously the hole of positively charged, this hole can excite airborne oxygen to become active oxygen, extremely strong chemically reactive is arranged, can with multiple-microorganism generation oxidizing reaction, thereby bacterium is killed; (2) digestion of metallic ion Antibacterial Mechanism, namely zine ion can dissociate out gradually, and when it and bacterial body contacted, will combine with active protease in bacterial body lost activity it, thereby bacterium is killed.
(b) antibacterial tests: under ocean environment, be easy at parasitic bacterial classification such as the table 1 in tr surface.Simulating ocean environment, according to national military standard GJB 150.10-1986---the 10th part in military hardware laboratory environment test method: mould test, the flora test of knowing clearly in his-and-hers watches 1 five, the bacteriostasis rate of nano-ZnO antibacterial glass reinforced plastic tr of the present invention reaches more than 95%, and good antibacterial effect is arranged.
Table 1 detects bacterial classification such as following table
| Strain name | Bacterium numbering |
| Black aspergillus Aspergillus niger | 3.3928 |
| Yellow aspergillus Asperaillus flavus | 3.3950 |
| Variegated aspergillus Asperaillus versicolor | 3.3885 |
| The blue or green bacterium Penicillium of rope form funiculosum | 3.3872 |
| Chaetomium globosum Chaetomium globosum | 3.4254 |
Above-mentioned each cited raw material, and the bound of each raw material of the present invention, interval value, and the bound of processing parameter (as temperature, time etc.), interval value can realize the present invention.
Claims (8)
1. nano-ZnO antibacterial glass reinforced plastic tr, comprise casing, it is characterized in that casing is provided with antibiotic glue-line, described antibiotic glue-line forms by comprising the antibiosis rubber vacuum pouring that nano ZnO powder, Xylo-Mucine, liquid epoxies, antioxidant, promotor and solidifying agent that titanate coupling agent modified crosses form; Wherein, the mass ratio of nano ZnO powder, Xylo-Mucine, antioxidant, promotor and the solidifying agent crossed of liquid epoxies, titanate coupling agent modified is 100:0.3-1: 1-5: 0.1-0.5: 1-5:0.1-3.
2. a kind of nano-ZnO antibacterial glass reinforced plastic tr according to claim 1, is characterized in that, described antioxidant is antioxidant CA or antioxidant 1010; Described promotor is ethylene diamine, accelerant A-1, accelerant A-33 or vulkacit D C-829; Described solidifying agent is Epon HPT solidifying agent 1061 or solidifying agent 1062.
3. a kind of nano-ZnO antibacterial glass reinforced plastic tr according to claim 1, it is characterized in that, described casing comprises fabric reinforcement, stiffening web, the first composite bed, core layer, multiaxis layer of cloth and the second composite bed, and fabric reinforcement, stiffening web, the first composite bed, core layer, multiaxis layer of cloth and the second composite bed are arranged to one from the inside to the outside successively.
4. a kind of nano-ZnO antibacterial glass reinforced plastic tr according to claim 3, is characterized in that, described stiffening web is comprised of plastic foam plate and the layer of fibers laid on described plastic foam plate.
5. a kind of nano-ZnO antibacterial glass reinforced plastic tr according to claim 3, is characterized in that, the first composite bed comprises 1-3 layer glasscloth or the carbon cloth with resin solidification.
6. a kind of nano-ZnO antibacterial glass reinforced plastic tr according to claim 3, is characterized in that, described core layer is PU or PVC foamed plastic plate.
7. a kind of nano-ZnO antibacterial glass reinforced plastic tr according to claim 3, is characterized in that, the second composite bed comprises layer of glass cloth or the carbon cloth after resin solidification.
8. the preparation method of a kind of nano-ZnO antibacterial glass reinforced plastic tr as claimed in claim 1, is characterized in that comprising the steps:
1) according to the size of tr, mfg. moulding die;
2) lay one or more layers glasscloth or carbon cloth at dies cavity, with the fixing fabric reinforcement that forms of resin compounded;
3) lay stiffening web on the fabric reinforcement after curing, and add foam fix on stiffening web;
4) lay 1-3 layer glasscloth or carbon cloth on stiffening web, solidify this 1-3 layer glasscloth or carbon cloth formation the first composite bed with resin compounded;
5) establish core on the first composite bed, form the core layer; Lay three layers of axle cloth on the core layer, form the multiaxis layer of cloth; Lay layer of glass cloth or carbon cloth on the multiaxis layer of cloth, solidify this layer of glass cloth or carbon cloth formation the second composite bed with resin compounded;
7) vacuum impregnating antibiosis rubber:
The preparation of antibiosis rubber: the mass ratio of nano ZnO powder, Xylo-Mucine, antioxidant, promotor and the solidifying agent of crossing by liquid epoxies, titanate coupling agent modified is 100:0.3-1: 1-5: 0.1-0.5: 1-5:0.1-3, chooses nano ZnO powder, Xylo-Mucine, liquid epoxies, antioxidant, promotor and solidifying agent that titanate coupling agent modified is crossed;
Nano ZnO powder with titanate coupling agent modified is crossed adds Xylo-Mucine, is uniformly dispersed under ul-trasonic irradiation, join liquid epoxies, then use the ultrasonic wave Uniform Dispersion, then add antioxidant, promotor and solidifying agent, mix, obtain antibiosis rubber;
Injecting glue: vacuum pouring antibiosis rubber in the mould;
8) solidify: be heated to 70-80 ℃, soaking time 30-50 minute, after treating its exothermic peak, temperature dropped to 40 ℃ and closes vacuum pump;
9) demoulding obtains nano-ZnO antibacterial glass reinforced plastic tr.
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| CN106379028B (en) * | 2016-08-29 | 2018-04-03 | 佛山市高明区尚润盈科技有限公司 | A kind of preparation method of photochromic glass ladle vanning |
| CN112848369A (en) * | 2019-11-12 | 2021-05-28 | 四川威琦尔智能科技有限公司 | Guided missile packaging box forming process |
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