CN103382724B - Corrosion-prevention construction method for water pool by adopting vinyl ester - Google Patents
Corrosion-prevention construction method for water pool by adopting vinyl ester Download PDFInfo
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- CN103382724B CN103382724B CN201310262302.1A CN201310262302A CN103382724B CN 103382724 B CN103382724 B CN 103382724B CN 201310262302 A CN201310262302 A CN 201310262302A CN 103382724 B CN103382724 B CN 103382724B
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Abstract
The invention discloses a corrosion-prevention construction method for a water pool by adopting vinyl ester, which comprises the step of coating isolating layers and surface layers at the bottom and on the walls of the water pool. The specific steps are as follows: (1) coating the isolating layers at the bottom and on the walls of the water pool, scaffolding, processing a base layer, coating vinyl ester resin prime paint, vinyl ester resin putty, vinyl ester resin lining 0.2mm-thick glass wool cloth formed by 6 layers of cloth and 7 layers of sizing material and vinyl ester resin finishing coat to the bottom and the walls of the water pool sequentially, and then repairing defects and performing acceptance inspection; (2) coating surface layers on the isolating layers of the walls of the water pool; (3) coating a surface layer on the isolating layer at the bottom of the water pool. According to the invention, construction is convenient, and repair is easy. The corrosion-prevention construction method for the water pool by adopting vinyl ester is suitable for concrete water pools, requiring higher corrosion prevention performance, of industrial and civil buildings and concrete construction surfaces in the humid environment with large corrosivity, and is particularly suitable for concrete structures in a large-scale urea chemical engineering project similar to a 600,000-ton urea project.
Description
Technical field
The present invention relates to a kind of pond vinyl esters anticorrosion construction method.
Background technology
Antiseptic project material is varied now, and wherein vinyl esters is exactly one of anti-corrosion material being used in pool surface, and this anti-corrosion material is new material, construction technology standard also more imperfect at present, quality requirement and engineering method.
My company undertakes the construction of in Anyang is full of chemical fertilizer 600,000 tons of urea project emergency pool engineerings, and pond inwall and base plate have employed vinyl esters anti-corrosion material and construction technology.This pond antiseptic project construction works amount is large, without ripe construction technology, repeatedly inquiring into anti-corrosion material manufacturer, management department and owner, simultaneously with reference to other similar antiseptic project specialty data, pass through site operation, update, we sum up complete vinyl esters anticorrosive construction technique, and form this method.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of pond vinyl esters anticorrosion construction method.
Technical scheme of the present invention is: pond vinyl esters anticorrosion construction method, and be included in pool bottom and pool wall coating separation layer and surface layer, its step is as follows:
(1) at pool bottom and pool wall coating separation layer, set up scaffold, process basic unit, at pool bottom and pool wall coating ethylene base ester resin primer, vinyl ester resin putty, vinyl ester resin lining 0.2mm heavy sheet glass silk cloth 6 cloth 7 oil, vinyl ester resin finish paint successively, then defect repair, checks and accepts;
(2) on pool wall separation layer, apply surface layer, set up scaffold, process basic unit, coating surface layer, surface layer is coating ethylene base ester glass flake priming paint twice, and at coating ethylene base ester glass flake finish paint twice, defect repair, checks and accepts;
(3) on pool bottom separation layer, apply surface layer, process basic unit, surface layer is coating ethylene base ester resin backing material one time, the vinyl ester resin mortar that the 6mm that paves is thick, defect repair, checks and accepts.
Described process basic unit step is as follows:
1. concrete base layer requires: cement mortar, concrete surface must be smooth, the not gentle voids and pits of no concave-convex, free from flaw exists, electrolytic cell template obtains even curface after pulling down, concrete base layer is after maintenance, in its substrate surface 20mm degree of depth, moisture is no more than 6%, and basic unit's outward appearance is: surface uniform whitens, with palm of the hand touch without dark and damp sensation; 2. concrete base layer treating method: the uneven or partial cells pitted skin place of concrete base layer uses epoxy mortar to repair, new benefit is site curing to be completed, anticorrosive coat construction is carried out again after drying, before anticorrosive coat construction, the floating grey dust of substrate surface is removed with wire wheel, then with dust catcher removing detritus dust, the greasy dirt in basic unit needs the local crumpled gauze scrub being moistened with acetone or alcohol.
Described step (1) medium vinyl ester resin primer construction sequence is as follows: 1. in substrate surface, brush epoxy putty backing material, self maintenance is more than or equal to 12 hours, the uneven place epoxy putty that substrate surface caved in after first time backing material initial set is filled and led up, then second time backing material is carried out, the materials of secondary bottoming, require and maintenance identical with for the first time bottoming, the curing time of the two is more than or equal to 24 hours; 2. vinyl ester resin priming paint brush or roller are coated in and treat that on lining equipment construction face, service time is 30 ~ 40min, use quantitatively: 0.3kg/m
2, service time: 20-50 minute.
The oily construction sequence of described step (1) medium vinyl ester resin interlining 0.2mm heavy sheet glass silk cloth 6 cloth 7 is as follows: 1. construction environment temperature is 15 ~ 25 DEG C, relative humidity is not more than and equals 80%, construction environment temperature, lower than 10 DEG C, is taked heating and thermal insulation measure or adopts the special accelerator of vinyl ester resin; Preparation vinyl ester resin sizing material, by vinyl ester resin through 40 DEG C of heating water baths, by vinyl ester resin, thinner, curing compound, filler, mixes in order, fully stirs, the vinyl ester resin sizing material slaking prepared 30 minutes; 2. by thin for vinyl ester resin sizing material and be evenly painted on by backing member surface, spontaneous curing is more than or equal to 24h, and there is the uneven place of depression on surface, repairs fill and lead up with putty, and arc transition smeared into by weld seam and the corner putty of recessed and protrusion; 3. glass wool cloth cutting edge, during lining cloth at the position of stickers lining glass wool cloth first evenly brushing one deck and serve as a contrast glass wool cloth with wide vinyl ester resin sizing material, be lining with one deck glass wool cloth immediately, glass wool cloth is adjacent to, drive bubble away, it is coated with a layer sizing again, and reach vinyl ester resin lining 0.2mm heavy sheet glass silk cloth 6 cloth 7 oil, the lap width with layer glass wool cloth is more than or equal to 50 ㎜; Overlap joint is along Flow of Goods and Materials direction, and the overlap joint of levels staggers mutually, and its distance is more than or equal to 50 ㎜; The glass wool cloth of stickers lining adapter and the glass wool cloth of stickers lining inwall stagger layer by layer, and lap width is more than or equal to 50 ㎜; Stressed and the position that is that wash away by matter of equipment corner, adapter place, Flange Plane, manhole, increase 1-2 layer glass wool cloth, flange place cuts off and is adjacent to; 4. after having spread last one deck glass wool cloth, brushing one deck vinyl ester resin sizing material.
The invention has the beneficial effects as follows: vinyl esters is for main raw material(s) with epoxy resin and unsaturated monoacid, under the effect of catalyzer, with the large resinoid that the active cross-linking monomer containing olefinic double bonds dilutes after adding thermal response, it is a kind of novel high-performance resin having unsaturated polyester (UP) and epoxy two kinds of resin advantages concurrently, there is good processing performance, techniques such as can adopting spray, roll, brush and smear, not only easy construction, and repair easily.During use, brushing is at pool inner wall, forms the very high membranaceous material of complete intensity, thus play pond water-tight corrosion-proof object after solid with cloth, has comprehensive mechanical performance and the adhesion stress of excellence.There is good acid and alkali resistance, salt, chemical mediator, hygrometric state corrosive gas and water resistance.
The present invention is easy construction not only, and repairs easily.Separation layer and the very high membranaceous material of the complete intensity of the solid rear formation of surface layer, form the confined layer of high density, high strength, thus play pond water-tight corrosion-proof object; Stable performance under normal temperature, environmental-protecting performance is excellent; And have good resistance to high temperature tolerance, high tenacity, shrinkage factor little (about 1%).
The present invention is suitable for the concrete structural surface in the large wet environment of industry and the higher concrete basin of civilian construction requirement for anticorrosion, corrosivity; Concrete structures in the large-scale urea chemical project of especially similar 600,000 tons of urea engineerings, more applicable.
Detailed description of the invention
Pond vinyl esters anticorrosion construction method, first do 5 cloth 6 oil or the oily vinyl ester resin separation layers of 6 cloth 7, be coated with vinyl esters glass flake priming paint, finish paint again, or break vinyl esters bed material, pave vinyl ester resin mortar surface layer, be included in pool bottom and pool wall coating separation layer and surface layer, its step is as follows:
(1) at pool bottom and pool wall coating separation layer, set up scaffold, process basic unit, at pool bottom and pool wall coating ethylene base ester resin primer, vinyl ester resin putty, vinyl ester resin lining 0.2mm heavy sheet glass silk cloth 6 cloth 7 oil, vinyl ester resin finish paint successively, then defect repair, checks and accepts;
(2) on pool wall separation layer, apply surface layer, set up scaffold, process basic unit, coating surface layer, surface layer is coating ethylene base ester glass flake priming paint twice, and at coating ethylene base ester glass flake finish paint twice, defect repair, checks and accepts;
(3) on pool bottom separation layer, apply surface layer, process basic unit, surface layer is coating ethylene base ester resin backing material one time, the vinyl ester resin mortar that the 6mm that paves is thick, defect repair, checks and accepts.
Base treatment:
1. concrete base layer requires:
Cement mortar, concrete surface must be smooth, the not gentle voids and pits of no concave-convex, and crack allowance does not exist, and electrolytic cell template obtains even curface after pulling down.Concrete base layer is after maintenance, and in its substrate surface 20mm degree of depth, moisture must not more than 6%, and basic unit's outward appearance is: surface uniform whitens, with palm of the hand touch without dark and damp sensation;
2. concrete base layer treating method:
Concrete base layer, if any uneven or partial cells pitted skin, can use epoxy mortar to repair, and new benefit is site curing to be completed, anticorrosive coat construction is carried out again after drying, before anticorrosive coat construction, remove the floating grey dust of substrate surface with wire wheel, then conscientiously remove detritus dust with dust catcher etc.If there is greasy dirt in basic unit, need the local crumpled gauze scrub being moistened with acetone or alcohol.
Vinyl ester resin priming paint is constructed:
In substrate surface, brush epoxy resin backing material equably, defects such as leaking brush sagging must not be had, self maintenance is no less than 12 hours, the uneven place epoxy putty that substrate surface caved in after first time backing material initial set is filled and led up, and carries out second time backing material immediately, the materials of secondary bottoming, require and maintenance identical with for the first time bottoming, the curing time of the two is no less than 24 hours;
Get ormal weight priming paint feed liquid, add the curing dose of on-the-spot determined amounts, stir;
By deployed bottom glue, be coated in equably with brush or roller and treat that on lining equipment construction face, once preparing glue service time is 30 ~ 40min.During batch mixing, if special messenger grasps dosage.Use quantitatively: 0.3kg/m
2, service time: 20 to 50 minutes;
Repair surface: strict fill and lead up said minuscule hole and crackle by proportioning preparation putty, want gradation to scrape to smear to fill and lead up for comparatively dark larger hole, painting is scraped complete, then brushes one bottom sizing natural curing to surface drying.
Vinyl esters glass wool cloth is constructed:
1. construction environment temperature is preferably 15 ~ 25 DEG C, relative humidity should not be more than or equal to 80%, construction environment temperature is lower than 10 DEG C, heating and thermal insulation measure should be taked or adopt the special accelerator of vinyl ester resin, glass fabric or felt are kept at cool place, dry place, forbid to make moist, and keep dry, preventing pollution;
2. the preparation of vinyl esters sizing material
When environment temperature is low, resin is through 40 DEG C of heating water baths, then resin, thinner, curing compound, filler is taken, mix sequentially, abundant stirring, it is each not easily too many that glue is equipped with quantity, according to constructor's quantity, speed of application gradation preparation, the glue prepared could use after 30 minutes in slaking, the preparation of glue will strictly be undertaken by code requirement, preparation container and instrument is corrosion-resistant, clean, dry, without greasy dirt, various sizing material in use, if any gelling phenomenon, must not continue to use; The anti-corrosion material prepared can use after slaking 30min, and was finished in 2 hours;
3. construction technology process is as follows:
This technique is 15-30 DEG C to environmental requirement temperature, and relative humidity should not be more than or equal to 80%.When lower than construction environment temperature, take heating and thermal insulation measure, not handy naked light or steam direct heating, bottoming and Puttying, by thin for the bottoming sizing material configured and be evenly painted on by backing member surface, spontaneous curing must not be less than 24h, must not have the defect such as holiday, trickling.Its surface, if any the uneven place of depression, is repaired with putty and is filled and led up, and arc transition smeared into by weld seam and the corner putty of recessed and protrusion.
4. lining cloth: glass wool cloth cutting edge, during lining cloth at the position of stickers lining glass wool cloth first evenly brushing one deck and serve as a contrast glass wool cloth with wide sizing material, be lining with one deck glass wool cloth immediately, glass wool cloth is adjacent to, drive bubble away, it is coated with a layer sizing again, the continuous small pieces of cloth used for patches of lining cloth is to the number of plies of designing requirement; Lap width with layer glass wool cloth is not less than 50 ㎜; Overlap joint is along Flow of Goods and Materials direction, and the overlap joint of levels must stagger mutually, and its distance is not less than 50 ㎜; The glass wool cloth of stickers lining adapter and the stripping layer of cloth fault of stickers lining inwall are opened, and lap width is not less than 50 ㎜; Equipment corner, adapter place, Flange Plane, manhole and other positions that is stressed and that wash away by matter, all increase 1-2 layer glass wool cloth.Flange place cuts off and is adjacent to; After having spread last one deck cloth, brushing one deck surface layer sizing material; The gluing of glass wool cloth, except spread coating, also can adopt leaching to rub method process, glass wool cloth is placed on immersion in the sizing material prepared and rubs crowded, glass wool cloth is soaked into completely, then extrudes unnecessary sizing material with hand, evened up by glass and carry out stickers lining.
Vinyl esters glass flake surface construction:
1. can be coated with and airless spraying with brushing, cylinder.Must surfacing be carried out before application, remove the dust of substrate surface.Work before scale construction: 1) painting operation carries out in 4 hours after surfacing acceptance(check).Clean with compressed air after surface sand-blasting, fully except impurity such as dusts, then directed brushing flake paint; Subbing is constructed, and in strict accordance with manual, carries out mixing preparation, B component is poured in component A in proportion, stirs with agitator, during slaking 20min(20 DEG C in the two component ratio of AB) be then finished within the utilization phase; Underfill resin layer coating, with how much joining how many, when flake paint stirs, adopts de-airing mixer; Brush uniformly with roller or brush, consumption is 0.2 ㎏/about ㎡, confirms with or without the irregular gloss change caused of alluvial, sagging or thickness after brushing.After the dry also cleaning of prime is clean, flake paint construction can be implemented; Get flake paint component A 100 parts, add curing compound and the pigment of ormal weight, stir through de-airing mixer, be masked as compound solid colour uniformly, each mixing doses is 10kg, and labor and materials preparation meets process stipulation; Confirm to have brushed on inside primary coat backsight whether have dust or other foreign matter etc. before construction, liner base surface is smeared without leaking, without surface drippage material, without obvious drop impression, without solidification defective region;
2. application is generally carried out at dry weather, temperature more than 5 DEG C, relative humidity less than 85%.Make priming paint with same glass flake (granularity is less), thickness is 50 microns, after priming paint dry to touch, be just coated with glass-flake coating.Get pre-assigned appropriate finish paint material, and add the curing compound of ormal weight, brush, finish paint brushing 1-2 road after stirring, brushing direction is mutually vertical, the brushing time interval 12h of twice finish paint.Containing styrene paraffin liquid in last one coating materials.Need to pay attention to when application following some: the abundant stirring of coating; Paint binder is with the mixing of curing compound; Viscosity adjusts; Active working life; The cleaning of application facility (machinery) and maintenance; Glass flake size;
3. the maintenance of lining and maintenance: is called defects liability period during this period of time to what can use after coating construction, whether completely the length of defects liability period look curing of coatings, and general summer puts more than 5 days, more than 10 days winter; If use in advance, then available way of heating accelerates its curing of coatings process, can 60 DEG C solidification 4 hours, 80 DEG C solidification 2 hours.
Vinyl esters mortar surface layer is constructed: during construction, each mixing amount is too much unsuitable.Construction point is as follows:
1. pave before resin mortar on separation layer, brushing connects slurry (resin sizing material), and it ensures that resin mortar and separation layer bonds well, prevents one of major measure shelled between mortar and separation layer, brushes thin and even;
2. connecing slurry upper berth resin mortar (6mm) immediately, when paving, can control with plastic strip and steel bar the thickness that paves.The resin mortar completed, and with stand with rubbing pressure, make surperficial pulp, then a Troweling press finishing.Smear before being pressed in mortar gel and complete, the mortar of gelling must not use;
3. the oblique raft that constuction joint is retained neat.Cleaning out tiltedly rubbing with the hands when continuing construction, being coated with one deck and connecing slurry, then continuing to pave;
4. maintenance: the curing time after construction is 1 week, avoids personnel to enter during this period and walks about, and forbids equipment, machinery to be marched into the arena; Overweight object is avoided to fall from eminence and knock ground as possible.Broken glass and pottery are disposed in time; Please note the technical data that we provide to you, understand every functional performance on the overall ground of X42 resin mortar; The overall ground of resin mortar is a kind of organic high polymer material, although have good chemical resistance, but, the oxidizing substance of some strong organic solvent and high concentration still can grievous injury terrace, chemicals splashes down rear attention and cleans in time, to ensure the good use of terrace, keep good sanitary condition, often use cleaning floor.
In above-described embodiment, material mixture ratio is as shown in table 1, and facility are as shown in table 2, and quality requirements of raw materials is as shown in table 3.
Table 1 material mixture ratio
Table 2 facility
| Sequence number | Plant equipment title | Specifications and models | Quantity |
| 1 | Axial flow blower | SF5-4 | 4 |
| 2 | Paint mixer | Φ15 | 3 |
| 3 | Clay mixer | ? | 2 |
| 4 | Electric grinder | ?Φ150 | 20 |
| 5 | Level gauge | ? | 2 |
| 6 | Cast-cutting saw | ? | 4 |
| 7 | Sonigauge | HCC-18 | 2 |
| 8 | Epidemic disaster meter | ? | 2 |
| 9 | Platform balance | U-50kg | 2 |
| 10 | Magnifying glass | ? | 6 |
| 11 | Dolly on duty | Liberation | 2 |
| 12 | Dust catcher | ? | 2 |
| 13 | Rotary broom | ? | 300 |
| 14 | Palm brush | ? | 400 |
Table 3 vinyl ester resin selects target level of product quality
Glass wool cloth selects the middle alkali of non-paraffin wax emulsions type, and non-twist without wax roving glass fibers grid plain, its thickness is 0.2-0.4mm, and thread count is 4 × 4--8 × 8 yarn radical/C ㎡ or 50-80g/ ㎡, hot strength >=2 × 10kgf/C ㎡.
Vinyl esters glass flake: viscosity S >=80; Drying time: surface drying≤4h, do solid work≤24h; Solid content >=65; Adhesion 1 grade; Hygrometric state heatproof reaches 120 DEG C, and dry state heatproof reaches 160 DEG C.
Vinyl ester resin priming paint, vinyl ester resin putty, vinyl ester resin, vinyl ester resin finish paint, vinyl esters glass flake priming paint, vinyl esters glass flake finish paint are purchased from East China University Of Science And Technology Huachang Polymer Co., Ltd, and vinyl ester resin mortar is purchased from Peng Dahui development in science and technology Co., Ltd of Shenzhen; Glass wool cloth is purchased from sky wave fiberglass product Co., Ltd.
Claims (4)
1. pond vinyl esters anticorrosion construction method, is characterized in that, be included in pool bottom and pool wall coating separation layer and surface layer, its step is as follows:
(1) at pool bottom and pool wall coating separation layer, set up scaffold, process basic unit, at pool bottom and pool wall coating ethylene base ester resin primer, vinyl ester resin putty, vinyl ester resin glass wool cloth, vinyl ester resin finish paint successively, then defect repair, checks and accepts;
(2) on pool wall separation layer, apply surface layer, set up scaffold, process basic unit, coating surface layer, surface layer is coating ethylene base ester glass flake priming paint twice, then coating ethylene base ester glass flake finish paint twice, defect repair, checks and accepts;
(3) on pool bottom separation layer, apply surface layer, process basic unit, surface layer is coating ethylene base ester resin backing material one time, the vinyl ester resin mortar that the 6mm that paves is thick, defect repair, checks and accepts.
2. pond according to claim 1 vinyl esters anticorrosion construction method, is characterized in that: in described step (1), process basic unit step is as follows:
1. concrete base layer requires:
Cement mortar, concrete surface must be smooth, the not gentle voids and pits of no concave-convex, free from flaw exists, electrolytic cell template obtains even curface after pulling down, concrete base layer is after maintenance, in its substrate surface 20mm degree of depth, moisture is no more than 6%, and basic unit's outward appearance is: surface uniform whitens, with palm of the hand touch without dark and damp sensation;
2. concrete base layer treating method:
Uneven or the partial cells pitted skin place of concrete base layer uses epoxy mortar to repair, and newly mends site curing completing, and carries out anticorrosive coat construction again after drying;
Before anticorrosive coat construction, remove the floating grey dust of substrate surface with wire wheel, then with dust catcher removing detritus dust, the crumpled gauze scrub being moistened with acetone or alcohol of the greasy dirt in basic unit.
3. pond according to claim 1 vinyl esters anticorrosion construction method, is characterized in that: described step (1) medium vinyl ester resin primer construction sequence is as follows:
1. in substrate surface, brush epoxy putty backing material, self maintenance is more than or equal to 12 hours, the uneven place epoxy putty that substrate surface caved in after first time backing material initial set is filled and led up, then second time backing material is carried out, the materials of secondary bottoming, maintenance is identical with first time bottoming, and the curing time of the two is more than or equal to 24 hours;
2. vinyl ester resin priming paint brush or roller are coated in and treat that on lining equipment construction face, service time is 30 ~ 40min, use quantitatively: 0.3kg/m
2, service time: 20-50 minute.
4. pond according to claim 1 vinyl esters anticorrosion construction method, is characterized in that: described step (1) medium vinyl ester plexiglas silk cloth construction sequence is as follows:
1. construction environment temperature is 15 ~ 25 DEG C, and relative humidity is not more than and equals 80%, and construction environment temperature, lower than 10 DEG C, is taked heating and thermal insulation measure or adopts the special accelerator of vinyl ester resin; Preparation vinyl ester resin sizing material, by vinyl ester resin through 40 DEG C of heating water baths, by vinyl ester resin, thinner, curing compound, filler, mixes in order, fully stirs, the vinyl ester resin sizing material slaking prepared 30 minutes;
2. by thin for vinyl ester resin sizing material and be evenly painted on by backing member surface, spontaneous curing is more than or equal to 24h, and there is the uneven place of depression on surface, repairs fill and lead up with putty, and arc transition smeared into by weld seam and the corner putty of recessed and protrusion;
3. glass wool cloth cutting edge, during lining cloth at the position of stickers lining glass wool cloth first evenly brushing one deck and serve as a contrast glass wool cloth with wide vinyl ester resin sizing material, be lining with one deck glass wool cloth immediately, glass wool cloth is adjacent to, drive bubble away, it is coated with a layer sizing again, and reach vinyl ester resin lining 0.2mm heavy sheet glass silk cloth 6 cloth 7 oil, the lap width with layer glass wool cloth is more than or equal to 50 ㎜; Overlap joint is along Flow of Goods and Materials direction, and the overlap joint of levels staggers mutually, and its distance is more than or equal to 50 ㎜; The glass wool cloth of stickers lining adapter and the glass wool cloth of stickers lining inwall stagger layer by layer, and lap width is more than or equal to 50 ㎜; Stressed and the position that is that wash away by matter of equipment corner, adapter place, Flange Plane, manhole, increase 1-2 layer glass wool cloth, flange place cuts off and is adjacent to;
4. after having spread last one deck glass wool cloth, brushing one deck vinyl ester resin sizing material.
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| CN107100378A (en) * | 2017-06-29 | 2017-08-29 | 苏州艾特斯环保设备有限公司 | A kind of concrete basin anticorrosion process |
| CN115506332A (en) * | 2022-10-13 | 2022-12-23 | 江苏申江环境科技有限公司 | Anticorrosion process for glass fiber reinforced plastic with humidity |
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| DE10207925A1 (en) * | 2002-02-23 | 2003-09-04 | Celanese Emulsions Gmbh | Aqueous coating compositions, processes for their preparation and their use, in particular for the production of thixotropic coating compositions |
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