CN1006984B - Anticorrosive and abrasion-resistant powder coating material and its coating method - Google Patents
Anticorrosive and abrasion-resistant powder coating material and its coating methodInfo
- Publication number
- CN1006984B CN1006984B CN 87100920 CN87100920A CN1006984B CN 1006984 B CN1006984 B CN 1006984B CN 87100920 CN87100920 CN 87100920 CN 87100920 A CN87100920 A CN 87100920A CN 1006984 B CN1006984 B CN 1006984B
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- China
- Prior art keywords
- coating
- powder
- paint
- epoxy
- resins
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
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- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The present invention provides anticorrosive and abrasion resistant powdery paint. The paint uses epoxy resin as a main raw material and is prepared from 100 portions by weight of epoxy resin E12, 20 to 200 portions by weight of cast stone powder, 3 to 5 portions by weight of dicyanodiamide, 10 to 30 portions by weight of nylon powder and 5 to 8 portions by weight of polyvinyl butyral. The paint has the advantages of corrosion prevention, abrasion resistance and strengthening effect; the paint can be widely used for the corrosion prevention of various metal pipelines and machines in acid base environment, can be used for strengthening cast pipes and can also be used as a binding agent of a rigid material.
Description
The invention belongs to the anti-corrosion of metal wear-resistant paint, being specifically related to a kind of is the powder coating of main raw material with Resins, epoxy.
Existing anti-corrosion of metal technology generally is to adopt dual mode: a kind of is to select impregnating material such as stainless steel or glass reinforced plastic for use, its advantage be corrosion-resistant, the life-span is long, but selling at exorbitant prices, and can produce crevice corrosion in stainless weld is accepted then undercapacity of position at glass reinforced plastic.Another kind of mode is coating one deck anti-corrosive paints on the metallic surface.Present various coating is unequal to more to be lifted, as Japanese Patent Jp59-193970. is exactly a kind of epoxy powder coating, Chinese patent CN85103608A also is a kind of thick-slurry type coal bituminous coating based on Resins, epoxy, it is divided into priming paint and finish paint two portions, the normal temperature brushing, but only be suitable for the anticorrosion of pipeline external walls such as oil transportation, gas transmission, water delivery.What Chinese patent CN85100697B said is a kind of fast-ionic conductor anti-corrosion of metal composite coating, employing be fast-ionic conductor space electric field corrosionproof protection method, favorable anti-corrosion effect, but this coating is not wear-resisting can not be used for the mechanical anti-corrosion erosion as the pump.
At present in the continuous pouring process of cast iron (steel) pipe,, when cast tube being carried out the water test, tend to leak and scrap because of the part infiltration by the GB3422-82 national standard because temperature, raw-material variation make local pore and the trachoma of producing of the cast tube of producing.GB allows local defect mending, and domestic only have Shoudu Iron and Steel Co to adopt high chrome high-nickel welding rod to repairing than macroscopic void, and technical difficulty is big and invalid to pore micropore (accounting for the major part of waste product).There is scrapping cast tube and need melting down again of 15%-30% every year in whole nation cast tube factory, causes very big financial loss, therefore urgent wish to seek a kind ofly can repair the cast tube defective, make it to strengthen method for certified products.
With the immediate prior art of the present invention is to be the patent application of CN85103496A by the inventor at the application number that proposes 1985.5.21 day, it is the powder adhesive of a kind of urethane and metal, use though can be used as coating, it is not acidproof, and should not strengthen cast tube yet.
Task of the present invention is to provide a kind of can be widely used in metal machinery, pipeline, and cast tube is had anticorrosion, wear-resistant paint and the coating method thereof of strengthening effect.
Major technique feature of the present invention is a kind of not only anticorrosion but also attrition resistant powder coating of preparation.Said powder coating is to be main raw material with commercially available Resins, epoxy, and all the other each components also all can have been bought on market, and the weight ratio of each component is:
Resins, epoxy E12 100
Glass-cermic powder 20-200
Dyhard RU 100 3-5
Said glass-cermic powder can be glass-ceramic diabase powder, glass-ceramic basalt powder.
Can add the 4th component nylon powder on this prescription basis, its weight ratio is the 10-30% of Resins, epoxy E12.
Can also add the 5th component polyvinyl butyral acetal again, its weight ratio is the 5-8% of Resins, epoxy E12.
Above-mentioned nylon powder and polyvinyl butyral acetal are toughner.The paint coatings of five components is better on wear resistance than the paint coatings of three components, but can not stand the corrosion of strong acid, therefore, under the environment that has strong acid to exist, can a coating group agent with three components.
The preparation method of powder coating of the present invention is very simple, only needs to mix the above-mentioned raw materials ball mill of packing into after by the prescription weighing levigate, and sieving with the 60-80 mesh standard sieve gets final product, and preservation period can reach 5 years.
The coating method of corrosion-resistant abrasion coating of the present invention is as follows:
(1) coated parts (or position) are deoiled, derusting by sandblast,
(2) be heated to 200-270 ℃,
(3) spray this corrosion-resistant abrasion coating with spray gun,
(4) under 160-200 ℃ of temperature, be incubated one hour.
The coating mechanical test is carried out in above-mentioned 5 component coating group agent, obtains result such as following table:
Butt joint tensile strength＞600 kilograms per centimeter
2
Overlap joint slip resistance＞400 kilograms per centimeter
2
Resistance to impact shock＞50 kilogram centimetre
The butt joint tensile strength of coating is like this test, powder coating is sprayed to metal cylinder test specimen (35.7 millimeters of diameters, 10 centimetres of the areas that is heated to 250 ℃ through rust cleaning
2) end, treat after the powder coating fusion cylindrical surface to be docked and fixed, heat preservation solidification is tested the butt joint tensile strength of two column on material-testing machine after one hour under 180 ℃ of temperature.
The test of coating overlap joint slip resistance is the steel plate test specimen with 100 * 20 * 3 millimeters, sprays this coating with identical spraying method, and the coating lap length is the 6-8 millimeter, solidifies the back and test slip resistance on material-testing machine.
The test of coating resistance to impact shock is that the steel plate two ends with the 0.5-1.5 mm thick apply this coating by spraying method, after waiting to solidify, 0.5 kilogram steel ball is lifted high 100 centimetres of free drop impact coatings, and steel plate two finishing coats all must not come off by peeling.
The antiseptic power of this paint coatings is very strong, has strong acid and alkali-resistance ability.The steel test specimen that scribbles this coating is put into 2-3 week in the acid-base solution of being tested, and test block is weightless and calculating year etching extent is as follows:
Medium temperature year etching extent (millimeter/year)
20% hydrochloric acid normal temperature 0.032
30% sulfuric acid normal temperature 0.0064
20% nitric acid normal temperature 0.32
30% sodium hydroxide normal temperature 0
30% formic acid normal temperature 0
Machine oil, gasoline normal temperature 0
10% sodium-chlor normal temperature 0
The coating of this coating also has good fastness to wear, goes up at the 2BA-6 of H=30.2 rice water pump (flow velocity V=32 meter per second) and adopts 100 kilograms/meter
3The Yellow River mud simultaneous test of concentration 300 hours, the ratio that records coating abrasion amount and cast iron pump body abrasion loss is 1: 4-5.
Powder coating of the present invention can not only be anticorrosion, and erosion resistant, paint spay-coating to workpiece after, can form firm coating, adhesive property is good.With the wetted surfaces of the common water pump of this paint spay-coating, can make the life-span of common water pump improve 4 times, its cost only increases 25-30%.With this paint spay-coating anti-corrosion pipeline, steel pipe or cast iron pipe life-span are improved more than 5-6 times.Strengthen cast tube with this paint spay-coating, technology is simple, and is with low cost, and economic benefit is remarkable especially, the cast tube that one ton of diameter of local strengthening is 300 millimeters, and spraying takes 10 yuan of less thaies, and economic benefit can reach 350-450 unit.In sum, owing to this coating has effect anticorrosion, wear-resistant, that strengthen concurrently, therefore, it can be widely used in the protection against corrosion of machinery in metallic conduit and the various acid or alkali environment, also can be used as the binding agent of strengthening cast tube or making rigid material.
Embodiment 1
Resins, epoxy E12 100 glass-ceramic diabase powder 150
Dyhard RU 100 4
Above-mentioned raw materials is levigate by the prescription weighing ball mill mixing of packing into after good, sieve with the 60-80 mesh standard sieve.
With the draining steel conduit of certain mine of this paint spay-coating, spraying method is as follows:
(1) steel pipe is deoiled, derusting by sandblast,
(2) adopt the tunnel process furnace that steel pipe is heated to 230 ℃,
(3) send powder monitor in pipeline, to spray this coating with wind,
(4) under 160-180 ℃ of temperature, be incubated one hour.
Coat-thickness 0.3-0.5 millimeter.
The weldless steel tube of 7 millimeters of 150 millimeters wall thickness of this diameter before the spraying uses and promptly corroded in 4 months, adopts to install and use the life-span behind this paint spay-coating and can reach more than 2 years.
Embodiment 2
Resins, epoxy E12 100 glass-ceramic diabase powder 100
Dyhard RU 100 3.5 nylon powders 20
Polyvinyl butyral acetal 5
Above-mentioned raw materials is levigate by the prescription weighing ball mill mixing of packing into after good, sieve with the 60-80 mesh standard sieve.
With this paint spay-coating all wetted surfaces in common water pump, spraying method is as follows:
(1) parts such as the flow passage components impeller of water pump, end cap, the pump housing are deoiled, derusting by sandblast,
(2) workpiece is put into baking oven for heating to 240-260 ℃,
(3) send powder monitor to spray this coating with wind,
(4) under 180-200 ℃ of temperature, be incubated one hour.
Coat-thickness is the 0.3-1.5 millimeter.
Water pump after the spraying assembling is the anticorrosion antiwear pump, can be used for submitting the discharge of acid-base medium or mine sour water, and the life-span, more common water pump improved 4 times.
Embodiment 3
Resins, epoxy E12 100 glass-ceramic diabase powder 100
Dyhard RU 100 4 nylon powders 25
Polyvinyl butyral acetal 8
Preparation method such as embodiment 1 or 2.
Is the 300-400 millimeter with the above-mentioned coating that makes to the diameter of certain cast tube factory, and length is that 6 meters the leak cast iron pipe of infiltration of part that has carries out local strengthening for 3000 tons.Spraying method such as embodiment 2 adopt far infrared heater that the part is heated to 250-270 ℃, at temperature 180-
200 ℃ are incubated one hour down.
Coat-thickness is the 0.5-1.5 millimeter.
In being undertaken by GB GB3422-82, cast iron pipe after locally sprayed reinforcement presses 24 kilograms/millimeter
2The water test, all qualified, become certified products.
Selected Resins, epoxy E12 is that Shanghai or Wuxi resin processing plant produce in the foregoing description.The nylon powder model is T-170, by Shanghai Celluloid Factory production.Polyvinyl butyral acetal is a 60-100 purpose powder-like product, is produced by Tianjin organic chemical industry demonstration plant.
Claims (4)
1, a kind of is the anti-corrosion wear resisting powder paint of main raw material with Resins, epoxy, it is characterized in that the weight ratio of each component is:
Resins, epoxy E12 100
Glass-cermic powder 20-200
Dyhard RU 100 3-5
2, powder coating as claimed in claim 1 is characterized in that said glass-cermic powder is the glass-ceramic diabase powder.
3, a kind of is the anti-corrosion wear resisting powder paint of main raw material with Resins, epoxy, it is characterized in that except that containing this powder coating of claim 1, add the 4th component nylon powder again, its weight ratio is the 10-30% of Resins, epoxy E12, with the 5th component polyvinyl butyral acetal, its weight ratio is the 5-8% of Resins, epoxy E12.
4, a kind of coating method as anti-corrosion wear resisting powder paint as described in claim 1 and 3 is characterized in that being made up of following steps:
(1) coated parts (or position) are deoiled, derusting by sandblast,
(2) be heated to 200-270 ℃,
(3) spray this coating with powder monitor,
(4) under 160-200 ℃ of temperature, be incubated one hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87100920 CN1006984B (en) | 1987-02-20 | 1987-02-20 | Anticorrosive and abrasion-resistant powder coating material and its coating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87100920 CN1006984B (en) | 1987-02-20 | 1987-02-20 | Anticorrosive and abrasion-resistant powder coating material and its coating method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN87100920A CN87100920A (en) | 1988-09-07 |
| CN1006984B true CN1006984B (en) | 1990-02-28 |
Family
ID=4813063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87100920 Expired CN1006984B (en) | 1987-02-20 | 1987-02-20 | Anticorrosive and abrasion-resistant powder coating material and its coating method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1006984B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1035515C (en) * | 1991-05-16 | 1997-07-30 | 中国科学院兰州化学物理研究所 | Anticorrosive antisticking and wear proof lubricating painting materials |
| CN1048748C (en) * | 1995-02-16 | 2000-01-26 | 叶得荣 | Wear-resisting composite coating |
| CN1074026C (en) * | 1997-06-12 | 2001-10-31 | 谢晓湛 | Elastic anti-corrosion wear resisting powder paint and its coating method |
| CN1074028C (en) * | 1998-12-29 | 2001-10-31 | 中国科学院兰州化学物理研究所 | Phenolic and epoxy, high wear resistance coatings |
| CN102108739B (en) * | 2009-12-28 | 2013-06-26 | 贵阳铝镁设计研究院有限公司 | Method and structure for insulating plant operative surface and support pillar |
| CN102850800B (en) * | 2012-09-11 | 2014-06-11 | 四川科立鑫新材料有限公司 | Preparation method of single-component room-temperature-vulcanized silicone rubber |
| CN102896786B (en) * | 2012-09-13 | 2015-07-22 | 安徽省宏源管道科技有限公司 | Powder interior repairing machine and repairing method thereof |
| CN104263202A (en) * | 2014-08-28 | 2015-01-07 | 乔克生 | Harbor instrument powdery paint |
| CN111675951A (en) * | 2020-06-18 | 2020-09-18 | 山西省水利水电科学研究院 | Anti-wear coating for flow passage component of hydraulic machine and preparation and coating methods thereof |
| CN114146885A (en) * | 2021-12-27 | 2022-03-08 | 北京华德星科技有限责任公司 | Spraying method of corrosion-resistant coating for top of crude oil distillation tower |
| CN115584190A (en) * | 2022-09-30 | 2023-01-10 | 谢雨琪 | Quick-curing anticorrosive wear-resistant powder coating and preparation method and application thereof |
-
1987
- 1987-02-20 CN CN 87100920 patent/CN1006984B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN87100920A (en) | 1988-09-07 |
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