CN101481476B - Preparation of conductive gas-phase anti-rust membrane - Google Patents
Preparation of conductive gas-phase anti-rust membrane Download PDFInfo
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- CN101481476B CN101481476B CN2009100737591A CN200910073759A CN101481476B CN 101481476 B CN101481476 B CN 101481476B CN 2009100737591 A CN2009100737591 A CN 2009100737591A CN 200910073759 A CN200910073759 A CN 200910073759A CN 101481476 B CN101481476 B CN 101481476B
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- polyolefin resin
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Abstract
The invention discloses an electric conduction gas phase rust prevention film which can prevent static and rust. The film is obtained by ingredients such as polyolefin resin, superfine carbon black, a vapor phase inhibitor, chemical inhibitor 1010, light stabilizer 6911, aluminate coupling agent; the polyolefin resin comprises 95% of blending polyolefine (low density polyethylene: linearity low density polyethylene equals to 3:7) and 5% of polyethylene wax; ultrafine grinding and wind force screening are carried out on carbon black powder by a whirlwind mill to obtain the superfine carbon black, the fineness of which reaches 5000 mesh. The vapor phase inhibitor comprises ammonium molybdate 5-30%, sodium benzoate 2-10% , the mixture of hydroxy triazole 5-20%, decanedioic acid sodium 28-45%, oxygen absorbent 5-20%, chrome acid tert-butyl ester 15-35%, and aluminate coupling agent 1-2%; the oxygen absorbent is sodium hydrosulfite or green copperas. The main processing comprises: the solid constituents of the vapor phase inhibitor are ground and coupled; the vapor phase inhibitor and the polyolefin resin are coupled, blended and co-extruded; the superfine carbon black and the polyolefin resin are coupled, blended and co-extruded; a three-layer co-extrusion blown film device is used for putting the polyolefin resin containing the vapor phase inhibitor and the carbon black in a feeding hole for blow molding. The film has the advantages that (1) the film is suitable for the rust prevention of various metals such as various steel, copper, aluminum, chromeplate, does not have undesirable impact on other non-metal materials such as optical equipment, rubber materials, electronic devices and components, and has good compatibility; (2) the film can be suitable for rust prevention packaging of various electronic equipment; the surface resistivity of the packaging film can reach 10<4> omega; and has excellent static-free and magnetic prevention performances on built-in devices.
Description
Technical field
The present invention relates to a kind of conduction gas phase anti-tarnishing film, belong to the metal rust preventing technical field.
Background technology
Gas phase anti-tarnishing film is a kind of development in recent years metal protection wrapping material faster, and the vapour-phase inhibitor that its inside is contained can evaporate into the metallic surface automatically, forms a kind of protective layer in the metallic surface, plays the effect that suppresses metallic corrosion.Have very important significance for the metal processing industry, the appearance of gas phase anti-tarnishing film is a major issue in metal protection field, has the people to liken it revolution of once " doing by wetting to " of metal rust preventing technology to.
In electronic product increasing today, the antirust problem of circuit structure that it is complicated and metal frame also highlights.Method commonly used is the aluminum plastic film vacuum packaging, and this method is more convenient for the less product of volume, but for equipment such as power distribution cabinet, Communication Equipment cabinets, not only efficient is low with the method that vacuumizes, and packing cost is very high.Compare with these methods, gas phase anti-tarnishing film has easy to use, low cost and other advantages.So gas phase anti-tarnishing film has been used to the rustproof packing of electronic product very naturally, still,, causes accumulation of static electricity easily, even might cause detrimentally affect inner responsive electronic devices and components because common gas phase anti-tarnishing film is the electrostatic poor conductor.
Therefore seek favorable rust preventing effect, the volatile rust prevention product that can be used as the static good conductor just becomes the task of top priority of electronic product processing industry.
Domesticly at present can only solve in a certain respect problem, or antirust for the protective packaging of electronic product, perhaps anti-electrostatic, and can anti-electrostatic can be antirust method, have only aluminum plastic film to vacuumize packing, and this method exists many shortcomings.So be necessary very much to develop a kind of conduction gas phase anti-tarnishing film, can solve the antirust and anti-electromagnetic problem of anti-electrostatic of electronic product simultaneously.
Summary of the invention
The purpose of this invention is to provide a kind of anti-electrostatic simultaneously, antirust conduction gas phase anti-tarnishing film.
Each composition of this gas phase anti-tarnishing film and content (mass percent) thereof are:
Polyolefin resin 80-90%
Ultra-fine carbon black 2-4%
Vapour-phase inhibitor 4-13%
Antioxidant 1010 1-2%
Photostabilizer 6911 0.5-2%
Aluminate coupling agent 1-3%
Wherein: polyolefin resin by 95% mix polyolefine (new LDPE (film grade): linear low density polyethylene=3: 7 portion rates) and 5% polyethylene wax form, ultra-fine carbon black, is measured fineness and is reached 5000 orders behind Cyclone mill superfine grinding, wind filter by carbon black powder.
Vapour-phase inhibitor is made up of mixture, 28-45% sebacic acid sodium, 5-20% oxygen absorbent, 15-35% chromic acid tert-butyl and the 1-2% aluminate coupling agent of 5-30% ammonium molybdate, 2-10% Sodium Benzoate, 5-20% 1-Hydroxy Benzotriazole, and wherein oxygen absorbent is V-Brite B or ferrous sulfate.
The main production of this conduction gas phase anti-tarnishing film comprises: the grinding of vapour-phase inhibitor solid ingredient, coupling; Vapour-phase inhibitor with the polyolefin resin coupling, mix, co-extrusion; The coupling of ultra-fine carbon black and polyolefin resin, mix, co-extrusion; Adopt three-layer co-extruded blown film equipment, will contain vapour-phase inhibitor respectively and the sooty polyolefin resin is put into opening for feed blowing.
The major advantage of this gas phase anti-tarnishing film is:
1. antirust applicable to multiple metals such as various iron and steel, copper, aluminium, chromium plating do not produce detrimentally affect to other non-metallic material such as optical equipment, elastomeric material, electronic devices and components etc., and consistency is good;
2. applicable to the rustproof packing of various electronicss, the surface resistivity of packing film can reach 104 Ω/, and built-in electronics is had excellent anti-electrostatic and anti-electromagnetic performance.
Embodiment 1: get 82 parts of polyolefin resines, 13 parts of vapour-phase inhibitors (by 5% ammonium molybdate, 7% Sodium Benzoate, 15% 124 Triazole, 35% sebacate, 28% chromic acid tert-butyl (liquid), 9% oxygen absorbent and 1% aluminate coupling agent according to aforesaid production technique production), 1 part of antioxidant 1010, UV light absorber UV5311 part, 6,911 1 parts of photostabilizers, 0.5 part of static inhibitor EP215,1.5 parts of aluminate coupling agents, according to the production technique of above-mentioned gas phase anti-tarnishing film, produce this gas phase anti-tarnishing film.
Embodiment 2: get 87 parts of polyolefin resines, 8 parts of vapour-phase inhibitors (by 5% ammonium molybdate, 7% Sodium Benzoate, 15% 124 Triazole, 35% sebacate, 28% chromic acid tert-butyl (liquid), 9% oxygen absorbent and 1% aluminate coupling agent according to aforesaid production technique production), 1 part of antioxidant 1010,1 part of UV light absorber UV531,6,911 1 parts of photostabilizers, 0.5 part of static inhibitor EP215,1.5 parts of aluminate coupling agents, according to the production technique of above-mentioned gas phase anti-tarnishing film, produce this gas phase anti-tarnishing film.
Verification experimental verification to the various embodiments described above rustless property
1, static state does not contact accelerated test
This test is used to verify the rust-proof effect of embodiment 1-2 under the moist situation of static state.Experimental installation is seen accompanying drawing 1, and wherein Reference numeral 1 is a rubber plug, and mark 2 is that (φ 30 * 200mm), and mark 3 is test piece, and mark 4 is a gas phase anti-tarnishing film, and mark 5 is a thermostatic bath, and mark 6 is an electrolyte solution for test tube.
The test explanation: the conduction gas phase anti-tarnishing film is 120mm * 100mm, and electrolyte solution contains HCO respectively
3 -1000mg/L, SO
4 2-2500mg/L, Cl
-1500mg/L, (50mm * 25mm * 2mm) does not need pre-film directly to place device after handling by the method for GB/T4879-1999 regulation, and bath temperature is set to 40 ℃, and experiment periods is 15 days with metal testing plate.
With the comparative example of embodiment contrast be:
Comparative example 1: get 95 parts of polyolefin resines, 1 part of antioxidant 1010,1 part of UV light absorber UV531,6,911 1 parts of photostabilizers, 0.5 part of static inhibitor EP215,1.5 parts of aluminate coupling agents according to the production technique of above-mentioned gas phase anti-tarnishing film, are produced the polyolefin film with the gas phase anti-tarnishing film same thickness.
Test-results sees Table 1.
Table 1 static state does not contact the accelerated test result
| Metal testing plate | Gun-steel | The A3 steel | The 45# steel | The 20# steel | Aluminium | Brass | Red copper | Zinc | Zinc-plated | Chromium plating |
| Comparative example 1 | ▲ | ▲ | ▲ | ▲ | ▲ | ● | ● | ● | ▲ | ▲ |
| |
○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ |
| Embodiment 2 | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ |
Annotate 1: go up in the table, ▲---serious corrosion, ●---variable color fully, zero---light is rustless;
Annotate 2: gun-steel is a PCrNiMoV steel alloy commonly used in the weaponry.
Rust spot promptly appears in steel class test piece 5h in the comparative example 1, very fast serious corrosion comprehensively; Aluminium test piece surface 4h loses metalluster, and white meal appears in 24h; Metachromatism takes place in copper class test piece 20h, and zinc, zinc-plated and chromium plating test piece 15h surface lose metalluster, occurs the bubbling phenomenon in 24 hours.
2, salt fog cabinet accelerated corrosion test
This test is used to verify the rust-proof effect of embodiment 1-2, and experimental technique is with reference to GJB145A-93.
Test one: metal testing plate is packed in the plastics bag made from the polyolefin film of comparative example 1, seal and be placed in the salt fog cabinet;
Test two: metal testing plate is packed in the plastics bag made from the gas phase anti-tarnishing film of embodiment 1, seal and be placed in the salt fog cabinet;
Test three: metal testing plate is packed in the plastics bag made from the gas phase anti-tarnishing film of embodiment 2, seal and be placed in the salt fog cabinet.
The test explanation: salts solution is 5% sodium chloride solution, and test temperature is 35 ℃, sprays 3 minutes, and 5 minutes at interval, the salt fog sinkability was 1-2ml/ (80cm
2H).Test period is 8 months.
Test-results sees Table 2.
Table 2 salt fog cabinet accelerated corrosion test result
| Metal testing plate | Gun-steel | The A3 steel | The 45# steel | The 20# steel | Aluminium | Brass | Red copper | Zinc | Zinc-plated | Chromium plating |
| Test one | Corrosion | Corrosion | Corrosion | Corrosion | Tarnish | Variable color | Variable color | Variable color | Variable color | Bubbling |
| Test two | Rustless | Rustless | Rustless | Rustless | Rustless | Not variable color | Not variable color | Not variable color | Not variable color | Rustless |
| Test three | Rustless | Rustless | Rustless | Rustless | Rustless | Not variable color | Not variable color | Not variable color | Not variable color | Rustless |
Annotate 1: corrosion all took place in the steel class test piece of test one in 15 days; The aluminium test piece is in the time of 20 days, and the surface loses metalluster; The copper class test piece variable color time is 60 days; Zinc and zinc-plated test piece surface lost metalluster in 35 days, and the chromium plating test piece is surface beginning bubbling in the time of 80 days.
Annotate 2: it is 27 that the salt fog cabinet that records with weight-loss method quickens multiplying power, in the table 2 sample of test two and test three go through 8 months rustless, so gas phase anti-tarnishing film provided by the invention can guarantee that fully multiple metal is rustless in 10 years.
3, compatibility test
Gas phase anti-tarnishing film with embodiment 1 carries out compatibility test to non-metallic material, and the result shows that this gas phase anti-tarnishing film does not produce detrimentally affect to optical equipment, elastomeric material, electronic devices and components, grease etc.
4, gas phase anti-tarnishing film atmospheric exposure test
Carry out atmospheric environment test (test divides under the outdoor glass frame, canopy storehouse and defence depot three groups) with the gas phase anti-tarnishing film of embodiment 1-2, the weathering resistance of check gas phase anti-tarnishing film, the result shows that three groups of test samples are in 18 months process of the test, and considerable change does not all take place mechanical property.
5, under the atmospheric environment, the test of gas phase anti-tarnishing film rust-proof effect
Pack gun-steel, A3 steel, 45# steel, 20# steel, aluminium, brass, red copper, zinc, zinc-plated and chromium plating test piece respectively with the polyolefin film of comparative example 1 and the gas phase anti-tarnishing film of embodiment 1-2, carry out atmospheric environment test (test divides under the outdoor glass frame, canopy storehouse and defence depot three groups), under atmospheric environment, gas phase anti-tarnishing film is to the rust-proof effect of various metals with check.The result shows that three groups of test samples are in 18 months process of the test, and corrosion or variable color all do not take place metal testing plate.
Test to the various embodiments described above conductivity
The various embodiments described above and comparative example are measured its surface resistivity respectively, and measuring method is tested according to the method for GB1410-78 regulation.Test result such as following table:
| The sample classification | Embodiment one | Embodiment two | Comparative example |
| Test result (surface resistivity) (Ω/) | 2.3×10 4 | 2.1×10 4 | 5.8×10 12 |
Test result shows: the sheet resistance value of the conduction volatile rust preventive material of being developed only is 10
4Ω/ has extraordinary conduction and anti-electromagnetic performance.
Claims (1)
1. a conduction gas phase anti-tarnishing film is characterized in that, mainly is made up of polyolefin resin, ultra-fine carbon black, vapour-phase inhibitor, antioxidant 1010, photostabilizer 6911, aluminate coupling agent, and each mass percentage content of forming is:
Polyolefin resin 80-90%
Ultra-fine carbon black 2-4%
Vapour-phase inhibitor 4-13%
Antioxidant 1010 1-2%
Photostabilizer 6911 0.5-2%
Aluminate coupling agent 1-3%
Wherein: polyolefin resin mixes polyolefine by 95% and 5% polyethylene wax is formed, wherein mixing polyolefine is made of in proportion 3 parts of new LDPE (film grade)s and 7 parts of linear low density polyethylenes, ultra-fine carbon black, is measured fineness and is reached 5000 orders behind Cyclone mill superfine grinding, wind filter by carbon black powders;
Vapour-phase inhibitor is made up of mixture, 28-45% sebacic acid sodium, 5-20% oxygen absorbent, 15-35% chromic acid tert-butyl and the 1-2% aluminate coupling agent of 5-30% ammonium molybdate, 2-10% Sodium Benzoate, 5-20% 1-Hydroxy Benzotriazole, and wherein oxygen absorbent is V-Brite B or ferrous sulfate.
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Families Citing this family (7)
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| CN102702610B (en) * | 2012-05-22 | 2015-10-14 | 青岛鑫盈鑫包装材料有限公司 | One is not containing nitrous acid salt form anti-rust master batch manufacture method |
| CN102875870B (en) * | 2012-09-15 | 2014-01-15 | 黄山徽冠包装材料有限公司 | Puncture resistant volatile rust preventive packaging film and production method thereof |
| CN104311972B (en) * | 2014-11-10 | 2016-06-15 | 青岛鑫盈鑫包装材料有限公司 | Palmic acid diglycollic amide borate gas-phase anti-rust master batch and its preparation method and application |
| CN105984045A (en) * | 2015-01-30 | 2016-10-05 | 泰阳橡胶厂股份有限公司 | Molding and manufacturing method for compound environment-friendly material |
| CN109554010B (en) * | 2018-11-29 | 2020-11-27 | 河北宇达防锈科技有限公司 | Gas-phase antirust film with controllable antirust time and preparation method thereof |
| CN111114059A (en) * | 2019-12-20 | 2020-05-08 | 布兰诺工业包装材料(上海)有限公司 | Conductive anti-rust film and manufacturing method thereof |
| CN113459624B (en) * | 2021-09-01 | 2022-01-04 | 北京恒信仝唯科技发展有限公司 | Anti-corrosion protection cover and preparation method thereof |
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