CN1050351A - Method with the mending enamelled reactor of polyflon - Google Patents
Method with the mending enamelled reactor of polyflon Download PDFInfo
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- CN1050351A CN1050351A CN 89105169 CN89105169A CN1050351A CN 1050351 A CN1050351 A CN 1050351A CN 89105169 CN89105169 CN 89105169 CN 89105169 A CN89105169 A CN 89105169A CN 1050351 A CN1050351 A CN 1050351A
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- polyflon
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Abstract
The present invention relates to a kind of with the method for polyflon emulsion as the mending enamelled reactor local damage of coating.It all is to adopt complicated technology that the enamel of reactor is removed that local damage appears in present enamel reaction still, sprays enamel more again, and its expense of reprocessing is 40% of a new reaction still price.After the present invention then only need clear up the part of breakage, spraying polyflon emulsion was carried out sintering curing again and is got final product.Method for repairing and mending technology of the present invention is simple, and labour intensity is low, and the coating after the repairing is durable in use, and it reprocesses the 2-5% that expense only accounts for the new reaction still.
Description
The present invention relates to a kind of method of making the mending enamelled reactor of coating with polyflon.
The reactor that chemical industry and pharmaceutical industry use generally all be metal surface anticorrosion with painting effect preferably enamel make, but the enamel cracky in the transportation, installation and use process, because collision injures by a crashing object, easily makes the enamel breakage of reactor.In case the enamel breakage then must be repaired.Present method for repairing and mending is to spray enamel after the enamel full scale clearance of metal surface more again, and can not carry out sectional repair.This method wastes time and energy, and has increased working strength of workers, and cost is very high, and its renewal expense is 40% of a new reaction still price, and the quality of the reactor after the repairing can not show a candle to the new reaction still.
The object of the present invention is to provide a kind of method of making coating reparation enamel reaction still with polyflon.
The polytetrafluoroethylene (PTFE) resin is owing to have many excellent comprehensive characteristics, as chemical-resistant stability, extremely low coefficient of friction (self lubricity), higher anti-adhesive, the broad temperature scope of application (from-260 ℃ to+250 ℃), distinctive hydrophobic, oil repellency etc., thus from the daily light industry industry so that national defense industry has all obtained application widely.The present invention is exactly these characteristics of utilizing polyflon, and its emulsion as coating, is used to repair enamel reaction still.Concrete scheme of the present invention is as follows: 1, surface coarsening is carried out at damaged position and handle and dedusting.2, spraying subbing, and carry out sintering curing after drying or the air dry, sintering temperature is 360-380 ℃, and holding temperature is 340-380 ℃, and temperature retention time is 30-90 minute (deciding according to part dimension).3, spraying lining, spraying temperature is 300-340 ℃, carry out sintering curing after the spraying immediately, sintering temperature is 340-360 ℃, holding temperature is 330-360 ℃, temperature retention time is 40-90 minute (deciding according to part dimension), sprays repeatedly for several times, till coating layer thickness reaches 0.15-0.35mm.Described subbing be in polyflon emulsion, add micro-phosphoric acid, the chromic anhydride mixed liquor is formulated, filter with 200 order screen packs then, the weight ratio of polyflon emulsion and phosphoric acid, chromic anhydride mixed liquor is 4: 1, the percentage by weight of phosphoric acid, chromic anhydride and distilled water is 15-25%: 15-25%: 50-60%, behind the spraying subbing, make the phosphate rete of metal surface generation porous, can improve the adhesive force of matrix effectively.Described lining is the polyflon emulsion.
Advantage of the present invention is: 1, technology is simple, saving of work and time, greatly reduces working strength of workers.2, cost is low, and renewal expense only accounts for the 2-5% of new reaction still price.3, polyflon coating of the present invention is through Dandong City's product quality supervision and testing institute test, and its conclusion is: according to SG78-74 standard degree of corrosion experimental test, and the requirement that is above standard of its test result.4, the coating after repairing is durable in use, but and repeated multiple times ground repair.Method for repairing and mending of the present invention not only can be used for the chemical reaction still, and is applicable to the equipment anticorrosion (except the pipeline) of chemical pharmaceutical, and its antiseptic effect is higher than pvc material, also can be sprayed on the mould of plastics surface and replace remover.
Embodiment: at first repair reactor and carry out the damaged condition inspection, check that the back carries out the sandblast roughening treatment to the damaged location surface, adopt 40-80 to giving
#Quartz sand or diamond dust, air pressure are the 4-5 kilograms per centimeter
2, not damaged position should be hidden during sandblast, use 3 kilograms per centimeter after the blasting treatment
2The compressed air dedusting.Spray subbing with spray gun to damaged position after the dedusting, with warm-air drier bed material is dried up, send into after drying up and carry out sintering curing in the electric furnace, sintering temperature is 360 ℃, and 380 ℃ of holding temperatures are incubated 30-40 minute, and this moment, surface, damaged position should be smoothly bright.Lining is sprayed on 300 ℃ to carry out, and stops spraying when the white powder shape of obvious thickness occurring on workpiece, comes off or bubble as nothing, then sends into sintering curing in the stove immediately, and sintering temperature 340-360 ℃, holding temperature 330-360 ℃, temperature retention time 30-40 minute.The spraying lining is 3-4 time continuously.The coating layer thickness of each spraying lining approximately can reach 0.03-0.06mm, and mainly by operating technology and experience, general coating layer thickness reaches 0.15-0.35mm, can reach antiseptic effect.The preparation of bed material: chromic anhydride (technical pure) 21 grams, phosphoric acid (technical pure) 22 gram distilled water 57 grams mix, mix with 400 gram polyflon emulsions (commercially available) again after dissolving fully, mix the back and filter, promptly can be used for spraying with 200 order copper mesh (or nylon wire).Bed material preparation back placement must not be above 24 hours.Lining is the polyflon emulsion.The polyflon emulsion is produced by Shanghai fluoroplastics research institute.
Claims (1)
1, a kind of method with the mending enamelled reactor of polyflon, comprise damaged surface is carried out roughening treatment, dedusting, again sprayed coating again, it is characterized in that the coating that is sprayed is divided into bed material and lining, described bed material is to add phosphoric acid in polyflon emulsion (commercially available), the chromic anhydride mixed liquor is formulated, again the bed material of joining is filtered with 200 purpose screen packs, phosphoric acid, the percentage by weight of chromic anhydride mixed liquor is: phosphoric acid, each 15-25% of chromic anhydride, distilled water 50-60%, polyflon emulsion and phosphoric acid, the weight ratio of chromic anhydride mixed liquor is 4:1, and described lining is polyflon emulsion (commercially available); The spraying coating process of coating is: at first spray bed material, carry out sintering curing after drying or the air dry, sintering temperature is 360-380 ℃, holding temperature is 340-380 ℃, temperature retention time is 30-90 minute, sprays lining then, and the spraying temperature of lining is 300-340 ℃, carry out sintering curing after the spraying immediately, sintering temperature is 340-360 ℃, and holding temperature is 330-360 ℃, and temperature retention time is 40-90 minute, spraying reaches 0.15-0.35mm until coating layer thickness for several times repeatedly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89105169 CN1050351A (en) | 1989-09-19 | 1989-09-19 | Method with the mending enamelled reactor of polyflon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89105169 CN1050351A (en) | 1989-09-19 | 1989-09-19 | Method with the mending enamelled reactor of polyflon |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1050351A true CN1050351A (en) | 1991-04-03 |
Family
ID=4855937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89105169 Pending CN1050351A (en) | 1989-09-19 | 1989-09-19 | Method with the mending enamelled reactor of polyflon |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1050351A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100425658C (en) * | 2005-11-14 | 2008-10-15 | 南京工业大学 | Preparation method of fluorine-containing coating reinforced by inorganic superfine fibers and provided with super-hydrophobic and oleophobic surfaces |
| CN103170794A (en) * | 2013-03-21 | 2013-06-26 | 安徽淮河化工股份有限公司 | Method of mending damage on non-clamping sleeve portion of enamel reaction kettle |
| CN105465478A (en) * | 2015-12-29 | 2016-04-06 | 西安航天动力研究所 | Fluoroplastic-metal valve element and molding technological method thereof |
| CN107308894A (en) * | 2017-06-07 | 2017-11-03 | 湖北兴瑞化工有限公司 | A kind of enamel equipment repair technology |
| CN108483917A (en) * | 2018-06-06 | 2018-09-04 | 无锡大塘复合材料有限公司 | A kind of improved enamel not adhering process method |
| CN112871108A (en) * | 2021-01-08 | 2021-06-01 | 浙江师范大学 | Reaction kettle preparation method and reaction kettle |
-
1989
- 1989-09-19 CN CN 89105169 patent/CN1050351A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100425658C (en) * | 2005-11-14 | 2008-10-15 | 南京工业大学 | Preparation method of fluorine-containing coating reinforced by inorganic superfine fibers and provided with super-hydrophobic and oleophobic surfaces |
| CN103170794A (en) * | 2013-03-21 | 2013-06-26 | 安徽淮河化工股份有限公司 | Method of mending damage on non-clamping sleeve portion of enamel reaction kettle |
| CN105465478A (en) * | 2015-12-29 | 2016-04-06 | 西安航天动力研究所 | Fluoroplastic-metal valve element and molding technological method thereof |
| CN105465478B (en) * | 2015-12-29 | 2018-07-17 | 西安航天动力研究所 | Fluoroplastics-metal spool and its moulding technique |
| CN107308894A (en) * | 2017-06-07 | 2017-11-03 | 湖北兴瑞化工有限公司 | A kind of enamel equipment repair technology |
| CN107308894B (en) * | 2017-06-07 | 2019-04-23 | 湖北兴瑞硅材料有限公司 | A kind of enamel equipment repair technology |
| CN108483917A (en) * | 2018-06-06 | 2018-09-04 | 无锡大塘复合材料有限公司 | A kind of improved enamel not adhering process method |
| CN108483917B (en) * | 2018-06-06 | 2021-03-23 | 无锡大塘复合材料有限公司 | Improved enamel non-stick process |
| CN112871108A (en) * | 2021-01-08 | 2021-06-01 | 浙江师范大学 | Reaction kettle preparation method and reaction kettle |
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