CN103691650B - Method for coating insulating self-lubricating coatings on surfaces of rubber products - Google Patents
Method for coating insulating self-lubricating coatings on surfaces of rubber products Download PDFInfo
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- CN103691650B CN103691650B CN201310750172.6A CN201310750172A CN103691650B CN 103691650 B CN103691650 B CN 103691650B CN 201310750172 A CN201310750172 A CN 201310750172A CN 103691650 B CN103691650 B CN 103691650B
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Abstract
The invention discloses a method for coating insulating self-lubricating coatings on surfaces of rubber products, and belongs to the field of treatment on surfaces of rubber products. The method comprises the following steps of (1), feeding: charging a rubber product in a drum under the conditions that the size of the rubber product does not exceed 3/4 of the volume of the drum, a wall of the drum has a net-shaped structure and sizes of meshes of the wall of the drum are smaller than the outer diameter of the rubber product, and placing the drum with the rubber product in a closed box; (2) coating: blowing molybdic sulfide powder in the closed box by using a fan, enabling molybdic sulfide particles to suspend in air, and rotating the drum so that the molybdic sulfide powder is uniformly adhered to the surface of the rubber product; and (3) polishing: taking out the coated rubber product and drying pellet particles, simultaneously placing the coated rubber product and the drying pellet particles in the dry drum, rotating the drum, and enabling the pellet particles to rub with the surface of the rubber product so that a molybdic sulfide coating is uniformly adhered to the surface of the rubber product. By using the method, the coating is not required to be solidified or dried, and production continuity is high. Moreover, the method is energy-saving and efficient.
Description
Technical field
The invention belongs to rubber article process field, especially relate to the painting method of a kind of rubber article coating insulation self-lubricating coat in use.
Background technology
At present, for reducing the coefficient of friction of rubber surface, improve wearability and the resistance to blocking energy of rubber, rubber surface can brushing tetrafluoroethene coating, and quiet, the coefficient of kinetic friction of rubber can be made to be down to 0.1 and 0.16 ~ 0.18 from 0.4 and 0.5 ~ 0.7 respectively.This has important practical significance for keeping rubber parts that is static, intermittent start for a long time, but the coating processes of tetrafluoroethene coating is complicated, and production cost is higher, and when seal stretcher strain or compression, tetrafluoroethene coating easily comes off.
In prior art, the painting method of most of tetrafluoroethene coating comprises following steps:
A), surface clean: use alcohols or organic solvent of ketone to clean rubber, remove the pollutant such as grease, dust of rubber surface;
B), dry: the goods after cleaning are carried out abundant drying;
C), coating primary coat: use dedicated solvent to be diluted by primary coat liquid, then use spraying device special even application in rubber surface;
D), primary coat solidification process: the rubber of spraying need be parked certain hour and carry out, and allows primary coat solidify;
E), coating tetrafluoroethene: use dedicated solvent that two kinds of component tetrafluoroethene are diluted to debita spissitudo, then use spraying device special even application in rubber surface;
F), tetrafluoroethene solidification process: the rubber of ptfe coating need solidify 30 minutes at the temperature of about 120 DEG C.
The painting method of this tetrafluoroethene coating, weak point is: the coating of (1) tetrafluoroethene coating requires higher to clean environment degree, needs to complete under micronic dust condition; (2) coating processes of tetrafluoroethene coating is complicated; (3) use tetrafluoroethene coating, when seal stretcher strain or compression, tetrafluoroethene coating easily comes off, and uses risky in oil piping system; (4) need in production process to use a large amount of environmentally harmful organic solvent.
In view of the foregoing, the desirable substitute of tetrafluoroethene coating is all being found by world Ge great rubber enterprise.
Publication number 102489440A, publication date: the Chinese patent literature on June 13rd, 2012, disclose a kind of method of coating graphite on surface of rubber product by using friction method, the steps include: that (1) feeds in raw material: in barrel mixer, add forging aquadag, bullet particle and rubber, the volume ratio of these three kinds of materials is (0.5 ~ 2): 2000:(1000 ~ 2000); (2) apply: swing roller, make bullet particle and rubber article adhere to forging aquadag, bullet particle and rubber article produce and rub simultaneously, and forging aquadag is attached to the surface of rubber uniformly; (3) dry: by the rubber of coated forging aquadag normal temperature or heat be no more than 80 DEG C state under dry, after the moisture evaporation in the forging aquadag of rubber article is complete, enter next process; (4) rub glazing: dried rubber and dry bullet particle are put into dry cylinder simultaneously, swing roller, bullet particle and rubber article produce and rub, and make equadag coating light, evenly, be firmly attached to rubber article, rotational time is 5 ~ 25 minutes.The method of the prior art has the advantages such as technique is simple, cost is low, environmental protection, and its weak point is:
(1) its conductive coating performance is better, on-insulated, inapplicable under some specific environments;
(2) lubricant owing to adopting is liquid forging aquadag, therefore needs in coating procedure to carry out drying to smears, needs the dry place of large-area relative clean, can expend certain energy time dry, simultaneously also can extension of the work cycle;
(3) its smears adopts forging aquadag, and forging aquadag has certain viscosity, easily by less bullet particles adhere in rubber article, this will increase the difficulty of subsequent survey, and very easily cause seal failure once undetected, quality risk is higher.
Summary of the invention
1. the technical problem that will solve
Be mostly liquid for the smears used of rubber article in prior art, and liquid smears is because self there being certain viscosity, dispersed bad, easy adhering contaminant and some little particles, thus carry out risk to band, coating time is long simultaneously, need the problem of drying or solidification process after coating, the invention provides the method for a kind of rubber article coating insulation self-lubricating coat in use, the method coating is without the need to solidification and dry process, continuous production is good, efficient energy-saving.
2. technical scheme
A method for rubber article coating insulation self-lubricating coat in use, the steps include:
(1) reinforced: rubber to be loaded in cylinder, rubber volume is no more than 3/4 of drum volume, and cylinder wall is network structure, and mesh is less than rubber external diameter, to guarantee that rubber does not drop from cylinder, the cylinder installing rubber is put into closed casing; Casing must be closed, to guarantee that molybdenum disulphide powder can not be blown casing.
(2) apply: in the casing closed, blow molybdenum disulphide powder with fan, molybdenum disulfide particles is suspended in atmosphere, swing roller, thus make molybdenum disulphide powder be attached to the surface of rubber uniformly;
(3) polishing: the bullet particle taking out the rubber after coating and drying puts into dry cylinder simultaneously, and swing roller, bullet particle and rubber article produce and rub, and make molybdenum bisuphide coating uniform be attached to rubber article.
3. beneficial effect
Technical scheme provided herein, during for rubber surface process, compared with existing known technology, has following remarkable result:
(1) the liquid coating agent adopted in prior art, certain viscosity is had as forged aquadag, easily by less bullet particles adhere in rubber article, this will increase the difficulty of subsequent survey, and very easily cause seal failure once undetected, quality risk is higher, and the molybdenum disulphide powder adopted in the present invention is self-lubricating, this type of adhesion problems can not be there is, in use, to the cleannes of process environments also without particular/special requirement;
(2) adopt the surface of process of the present invention to rubber to apply, before coating, rubber, without the need to cleaning, directly can apply, eliminate the pollution of organic solvent to environment;
(3) in method of the present invention, smears is molybdenum disulphide powder, because molybdenum disulphide powder itself is dried powder, and be liquid or emulsus coating material unlike what adopt when rubber surface applies in prior art, therefore eliminate drying steps after coating, namely coating is without the need to solidification and dry process, and continuous production is good, efficient energy-saving; Applicator is molybdenum disulphide powder, nontoxic, handling safety; Product surface is because evenly adhering to molybdenum bisuphide coating, and product surface is non-conductive;
(4) method molybdenum disulphide powder of the present invention applies, and the coating adhesion formed at rubber surface is strong, and when rubber tensile distortion reaches more than 500%, coating attachment is still good;
(5) goods of method of the present invention, high temperature resistance to blocking is good.By goods compression 40% under the condition of 250 DEG C/1000h, goods adhesion.Coated rubber article coefficient of friction is low, wearability good, anti-stick company.Molybdenum bisuphide covers the surface of friction material, can protect other materials, prevents them oxidized, especially makes other materials difficult drop-off, and the power that attaches strengthens;
(6) because smears is molybdenum disulphide powder, be suspended in air after fan dispels, so better dispersed, affect little by shape of product, coating time is short, and coating time is generally at 3 ~ 4 minutes;
(7) adopt method of the present invention, during coating, an installation amount is large, and rubber cumulative volume can reach 3/4 of drum volume, and coating efficiency is high.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in detail.
Embodiment 1
The method of the rubber article coating insulation self-lubricating coat in use of the present embodiment, the steps include:
(1) reinforced: loaded by rubber in cylinder, cylinder volume 20L, rubber volume is no more than 3/4 of drum volume.Cylinder wall is network structure, and mesh is less than rubber external diameter, to guarantee that rubber does not drop from cylinder, the cylinder installing rubber is put into closed casing;
The cylinder installing rubber is put into closed casing.
(2) apply: in the casing closed, blow molybdenum disulphide powder with fan, the wind speed of fan is 4 meter per seconds, molybdenum disulfide particles is suspended in atmosphere, swing roller, the rotary rpm of cylinder is 20 revs/min, thus make molybdenum disulphide powder be attached to the surface of rubber uniformly, take out rubber after 3 minutes;
(3) polishing: the rubber after coating and dry bullet particle are put into dry cylinder simultaneously, and bullet particle and rubber cumulative volume are no more than 3/4 of drum volume.Swing roller, the rotary rpm of cylinder is 40 revs/min, takes out goods after 3 minutes, and rubber article coating molybdenum bisuphide terminates.
After adopting the method coating of the present embodiment, the coating obtained:
(1) coating attachment limit is strong, and when rubber tensile distortion reaches 550%, coating is still without coming off;
(2) resistance to blocking is good, by goods compression 40% under the condition of 250 DEG C/1000h, and goods adhesion.
(3) molybdenum bisuphide coating uniform, product reactance voltage performance reaches 20KV/mm, and it is female that product surface resistance reaches 1010 Europe.
Embodiment 2
The method of the rubber article coating insulation self-lubricating coat in use of the present embodiment, the steps include:
(1) reinforced: loaded by rubber in cylinder, cylinder volume 30L, rubber volume is no more than 3/4 of drum volume.Cylinder wall is network structure, and mesh is less than rubber external diameter, to guarantee that rubber does not drop from cylinder, the cylinder installing rubber is put into closed casing;
(2) apply: in the casing closed, blow molybdenum disulphide powder with fan, the wind speed of fan is 5 meter per seconds, molybdenum disulfide particles is suspended in atmosphere, swing roller, the rotary rpm of cylinder is 30 revs/min, thus make molybdenum disulphide powder be attached to the surface of rubber uniformly, within 4 minutes, take out rubber;
(3) polishing: the rubber after coating and dry bullet particle are put into dry cylinder simultaneously, and bullet particle and rubber cumulative volume are no more than 3/4 of drum volume.Swing roller, rotary rpm is 80 revs/min, takes out goods after 5 minutes, and rubber article coating molybdenum bisuphide terminates.
After adopting the method coating of the present embodiment, the coating obtained:
(1) coating attachment limit is strong, and when rubber tensile distortion reaches 500%, coating is still without coming off;
(2) resistance to blocking is good, by goods compression 40% under the condition of 250 DEG C/1000h, and goods adhesion.
(3) molybdenum bisuphide coating uniform, product reactance voltage performance reaches 20KV/mm, and it is female that product surface resistance reaches 1011 Europe.
Embodiment 3
The method of the rubber article coating insulation self-lubricating coat in use of the present embodiment, the steps include:
(1) reinforced: loaded by rubber in cylinder, cylinder volume 40L, rubber volume is no more than 3/4 of drum volume.Cylinder wall is network structure, and mesh is less than rubber external diameter, to guarantee that rubber does not drop from cylinder, the cylinder installing rubber is put into closed casing;
(2) apply: in the casing closed, blow molybdenum disulphide powder with fan, the wind speed of fan is 4.5 meter per seconds, molybdenum disulfide particles is suspended in atmosphere, swing roller, the rotary rpm of cylinder is 25 revs/min, thus make molybdenum disulphide powder be attached to the surface of rubber uniformly, within 3.5 minutes, take out rubber;
(3) polishing: the rubber after coating and dry bullet particle are put into dry cylinder simultaneously, and bullet particle and rubber cumulative volume are no more than 3/4 of drum volume.Swing roller, rotary rpm is 60 revs/min, takes out goods after 10 minutes, and rubber article coating molybdenum bisuphide terminates.
After adopting the method coating of the present embodiment, the coating obtained:
(1) coating attachment limit is strong, and when rubber tensile distortion reaches 650%, coating is still without coming off;
(2) resistance to blocking is good, by goods compression 40% under the condition of 250 DEG C/1000h, and goods adhesion.
(3) molybdenum bisuphide coating uniform, product reactance voltage performance reaches 20KV/mm, and it is female that product surface resistance reaches 1012 Europe.
Claims (3)
1. a method for rubber article coating insulation self-lubricating coat in use, the steps include:
(1) reinforced: rubber to be loaded in cylinder, rubber volume is no more than 3/4 of drum volume, and cylinder wall is network structure, and mesh is less than rubber external diameter, to guarantee that rubber does not drop from cylinder, the cylinder installing rubber is put into closed casing;
(2) apply: in the casing closed, blow molybdenum disulphide powder with fan, molybdenum disulfide particles is suspended in atmosphere, swing roller, thus make molybdenum disulphide powder be attached to the surface of rubber uniformly;
(3) polishing: the bullet particle taking out the rubber after coating and drying puts into dry cylinder, swing roller simultaneously, and bullet particle and rubber article produce and rub, and make molybdenum bisuphide coating uniform be attached to rubber article;
After method coating described in employing, the coating rubber stretcher strain obtained reaches 500-650%.
2. the method for a kind of rubber article coating insulation self-lubricating coat in use according to claim 1, it is characterized in that: in described step (2), during coating, the wind speed of fan is 4 ~ 5 meter per seconds, and the rotary rpm of cylinder is 20 ~ 30 revs/min, and rotational time is 3 ~ 4 minutes.
3. the method for a kind of rubber article coating insulation self-lubricating coat in use according to claim 2, is characterized in that: in described step (3), during polishing, the rotary rpm of cylinder is 40 ~ 80 revs/min, and rotational time is 3 ~ 10 minutes.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310750172.6A CN103691650B (en) | 2013-12-31 | 2013-12-31 | Method for coating insulating self-lubricating coatings on surfaces of rubber products |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310750172.6A CN103691650B (en) | 2013-12-31 | 2013-12-31 | Method for coating insulating self-lubricating coatings on surfaces of rubber products |
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| CN103691650A CN103691650A (en) | 2014-04-02 |
| CN103691650B true CN103691650B (en) | 2015-03-18 |
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| CN104817712B (en) * | 2015-04-29 | 2018-01-05 | 南京金三力橡塑有限公司 | Prevent fluororubber O-type ring from gluing glutinous method during a kind of post-cure |
| CN107583792A (en) * | 2017-09-30 | 2018-01-16 | 浙江博门汽车零配件有限公司 | A kind of spraying frock structure of rubber |
| CN107840985A (en) * | 2017-10-25 | 2018-03-27 | 宝鸡圭彬光电设备有限公司 | A kind of preparation method of power equipment electro-insulating rubber |
| CN109382295A (en) * | 2018-10-26 | 2019-02-26 | 安徽库伯密封技术有限公司 | A kind of coating method preventing O-ring surface PTFE coating shedding |
| CN114318461B (en) * | 2021-12-31 | 2023-02-28 | 深圳市晋铭航空技术有限公司 | Surface treatment method for realizing local lubrication of aluminum alloy part |
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| CN101126160A (en) * | 2007-09-13 | 2008-02-20 | 四川联茂机械制造有限公司 | Preparation method for molybdenum disulfide base lubricating coat |
| CN101505878A (en) * | 2006-03-16 | 2009-08-12 | 戴蒙得创新股份有限公司 | Lubricious coatings |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09109703A (en) * | 1995-10-13 | 1997-04-28 | Akurosu Kk | Paint composition and fuel cap packing |
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|---|---|---|---|---|
| CN101505878A (en) * | 2006-03-16 | 2009-08-12 | 戴蒙得创新股份有限公司 | Lubricious coatings |
| CN101126160A (en) * | 2007-09-13 | 2008-02-20 | 四川联茂机械制造有限公司 | Preparation method for molybdenum disulfide base lubricating coat |
Non-Patent Citations (2)
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| "新型固体润滑材料-二硫化钼";石显民;《长春光学精密机械学院学报》;19901001;第13卷(第3期);第62-65页 * |
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Effective date of registration: 20160825 Address after: 210061 Jiangsu Province dragon High-tech Zone of Nanjing City Road No. 6 Patentee after: NANJING JINSANLI MACROMOLECULE SCIENCE AND TECHNOLOGY CO.,LTD. Address before: 210061 Jiangsu city of Nanjing province Nanjing high tech Development Zone, Liuzhou Road No. 6 Patentee before: NANJING JINSANLI RUBBER & PLASTIC Co.,Ltd. |
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Granted publication date: 20150318 Termination date: 20211231 |