CN101597460B - Special sealant surface layer coating for bottom of high-performance storage tank and preparation method thereof - Google Patents
Special sealant surface layer coating for bottom of high-performance storage tank and preparation method thereof Download PDFInfo
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- CN101597460B CN101597460B CN2009100693841A CN200910069384A CN101597460B CN 101597460 B CN101597460 B CN 101597460B CN 2009100693841 A CN2009100693841 A CN 2009100693841A CN 200910069384 A CN200910069384 A CN 200910069384A CN 101597460 B CN101597460 B CN 101597460B
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- 238000003860 storage Methods 0.000 title claims abstract description 50
- 238000000576 coating method Methods 0.000 title claims abstract description 46
- 239000011248 coating agent Substances 0.000 title claims abstract description 45
- 239000000565 sealant Substances 0.000 title claims abstract description 34
- 239000002344 surface layer Substances 0.000 title claims abstract description 32
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 18
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- 239000004970 Chain extender Substances 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 239000003795 chemical substances by application Substances 0.000 claims description 9
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- 239000005995 Aluminium silicate Substances 0.000 claims description 5
- 235000012211 aluminium silicate Nutrition 0.000 claims description 5
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 5
- 239000001038 titanium pigment Substances 0.000 claims description 5
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- 238000013019 agitation Methods 0.000 claims description 4
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- 238000010438 heat treatment Methods 0.000 claims description 4
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 claims description 4
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- 239000003963 antioxidant agent Substances 0.000 claims description 3
- 230000003078 antioxidant effect Effects 0.000 claims description 3
- HIFVAOIJYDXIJG-UHFFFAOYSA-N benzylbenzene;isocyanic acid Chemical class N=C=O.N=C=O.C=1C=CC=CC=1CC1=CC=CC=C1 HIFVAOIJYDXIJG-UHFFFAOYSA-N 0.000 claims description 3
- 239000012467 final product Substances 0.000 claims description 3
- KSBAEPSJVUENNK-UHFFFAOYSA-L tin(ii) 2-ethylhexanoate Chemical compound [Sn+2].CCCCC(CC)C([O-])=O.CCCCC(CC)C([O-])=O KSBAEPSJVUENNK-UHFFFAOYSA-L 0.000 claims description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 claims description 2
- NTIZESTWPVYFNL-UHFFFAOYSA-N Methyl isobutyl ketone Chemical compound CC(C)CC(C)=O NTIZESTWPVYFNL-UHFFFAOYSA-N 0.000 claims description 2
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 claims description 2
- KXKVLQRXCPHEJC-UHFFFAOYSA-N acetic acid trimethyl ester Natural products COC(C)=O KXKVLQRXCPHEJC-UHFFFAOYSA-N 0.000 claims description 2
- -1 aluminum silver Chemical compound 0.000 claims description 2
- 230000001680 brushing effect Effects 0.000 claims description 2
- 239000000049 pigment Substances 0.000 claims description 2
- 235000010482 polyoxyethylene sorbitan monooleate Nutrition 0.000 claims description 2
- 229920000053 polysorbate 80 Polymers 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- 238000007761 roller coating Methods 0.000 claims description 2
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- 230000007797 corrosion Effects 0.000 abstract description 9
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- 229920002635 polyurethane Polymers 0.000 description 4
- 239000004814 polyurethane Substances 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 3
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 description 3
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- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 3
- 238000004078 waterproofing Methods 0.000 description 3
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- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention discloses a special sealant surface layer coating for a CTPU high-performance storage tank bottom and a preparation method thereof, wherein the special sealant surface layer coating is A, B two-component coating; the special sealant surface layer coating for the tank bottom has excellent elasticity, waterproofness, corrosion resistance and ageing resistance, has strong bonding strength with a steel plate and concrete, effectively prevents a gap between the tank bottom and the concrete caused by the deformation of the tank bottom, prevents the corrosion of the tank bottom caused by the deformation of the tank bottom, and has the service life of more than ten years. The waterproof material is mainly used for sealing the bottom of a storage tank, can also be used for concrete ballasted bridge floors, ballastless bridge floors and railway bridge culvert waterproof engineering of high-speed railway passenger dedicated line bridges, and is also suitable for waterproof layers of other buildings and structures with higher requirements on waterproof performance.
Description
Technical field
The invention belongs to the chemical building material technical field, relate to building waterproofing paint and preparation method thereof, in particular CTPU dedicated sealant surface layer coating for high-performance storage tank bottom and preparation method thereof.
Background technology
Just in the high speed development, it is to the also sharp increase of demand of oil for the economy of China at present.Along with the appearance of a large amount of storage tank farms, the leakage that storage tank (especially base plate) causes because of corrosion will become a very severe problem.The leakage of storage tank mainly is to contact O in the soil because its base plate is outside with soil through tank base
2, H
2O, salt and sulphate reducing bacteria have constituted the outer corrosive environment of tank bottom; Jar internal reservoir oil product medium, the H in the oil product
2O, SO
2, H
2S etc. have constituted jar metal internal corrosion environment, particularly large-scale storage tank bottom margin plate and concrete contact site, often throw off the corrosion at the bottom of cause jar at water and corrosive medium thereby the intrusion jar end with the concrete basis because of tank bottom deformation.API has worked out API 653 standards as far back as 1991 with regard to this problem, and this standard provides preventive-maintenance overhaul and detection technique requirement for the ground atmospheric storage tank, through structural integrity and the operation conditions that can in time understand storage tank to the detection and the assessment of storage tank.
Sealer (Adhesive Sealant) is used for the sealing between the stationary engagement face.Be to have mobile aqueous dope before coating, be easy to fill up two slits between the junction surface, play the better seal effect.At present; The used sealing material of buildings mainly contains kinds such as polyurethanes waterproof paint, acrylic type water-proof coating, rubber asphalt class waterproof paint, X 050 class waterproof paint, silicone based waterproof paint and other waterproof paints; Its effect is the main raw that constitutes coating waterproofing; Make building surface and water isolated, buildings is played waterproof and sealing function, also play the decoration function of beautifying constructure simultaneously.But add coupling agent, auxiliary agent after existing pair of component series products need be dried, facility investment is big, and energy consumption is high, and the production cycle is long, so cost is high.
Urethane is a kind of good water-proof material.Polyurethane water-proof paint is a kind of chemical reaction type coating, how to use with two component forms.Because this type coating is directly to be become solid-stately by liquid state by chemical reaction takes place between component, produces volumetric shrinkage hardly, so be easy to form thicker waterproof coating.Although the many component polyurethane waterproof coatings that use at present can form good waterproof layer, because poor-performings such as its low temperature flexibility can not satisfy the sealing of storage tank bottom plate and the requirement of deformation.Often throw off with the concrete basis because of tank bottom deformation all kinds of in addition large-scale storage tank bottom margin plates and concrete contact site, water and corrosive medium thereby invade the corrosion at the bottom of cause jar at the jar end.Therefore, be badly in need of having good elasticity, anti-aging, corrosion-resistant on the market, the waterproof paint of very strong bonding strength is arranged with steel plate and concrete simultaneously.
Summary of the invention
First purpose of the present invention is to disclose a kind of CTPU dedicated sealant surface layer coating for high-performance storage tank bottom.It is to contain isocyanate terminated base (A component NCO) and the B component that contains solidifying agent compositions such as amino chainextender of end and end hydroxy polyether.A component: B component=1: 2.
Second purpose of the present invention has been to disclose the preparation method of CTPU dedicated sealant surface layer coating for high-performance storage tank bottom, and special seal gum coating of the present invention, prescription are rationally; Its production process efficient is high, energy-conservation, cost is low; Bonding force is strong, and is ageing-resistant, flexible.
The 3rd purpose of the present invention has been to disclose the application of CTPU dedicated sealant surface layer coating for high-performance storage tank bottom at preparation buildings, structures building seal aspect.The particularly application of seal aspect at the bottom of CTPU high-performance storage tank jar.For realizing above-mentioned purpose, the present invention provides following technical scheme:
The CTPU dedicated sealant surface layer coating for high-performance storage tank bottom is characterized in that it is by forming for A, the two components of B; Wherein A component parts by weight are: 8～20 parts of tolylene diisocyanates, 20～40 parts of diphenylmethanediisocyanates, 20～80 parts of TBIOL2000 polyethers, 10～25 parts of TMN3000 polyethers, 0～15 part of TBIOL1000 polyethers;
B component parts by weight are: 4～15 parts of amine chainextenders, 5～15 parts of TMN3000 polyethers, 15～40 parts of TBIOL2000 polyethers; 1105～20 parts in softening agent; 5～15 parts of wetting agents, reflective dose 2～10 parts, 1.0～2.5 parts of antioxidant 1010s; 20～45 parts of UV light absorber uv3270.8～2.0 part, 1.0～2.5 parts of promotor, face, filler, 5～15 parts of thinners, skimmer 0.1～0.5, flow agent 0.1～0.4, adhesion promoter 0.1～0.5.
Coating of the present invention, supporting use monocomponent polyurethane primary coat liquid can make the cohesive force of the CTPU high-performance storage tank bottom special sealant bed of material and basic unit's face reach more than the 2.5MPa in prescription.
Amine chainextender of the present invention is 3.3 '-two chloro-4.4 '-diphenyl methyl diamines; Reflective dose is clad aluminum silver powder; Wetting agent is a tween-80; Softening agent 110 is Witcizer 300 or DOP; Promotor is that stannous octoate or isocaprylic acid are plumbous; Skimmer is defom6800,5300 or 5500; Adhesion promoter is adherant1051 or KL; Flow agent is leveslip810,875 or 579; Face, filler are pigment of all kinds, white titanium pigment, kaolin, talcum powder, china clay, white carbon black, carbon black; Thinner is one or more a mixture of YLENE, ETHYLE ACETATE, methyl acetate, acetone, isopropyl acetone, butanone.
The preparation method of CTPU dedicated sealant surface layer coating for high-performance storage tank bottom according to the invention is characterized in that being undertaken by following step:
(1) all liquid and solid material must reach moisture≤1 ‰ through vacuum or thermal dehydration, test;
(2) preparation of A material: press A component weight proportion, under agitation, be added in the reaction kettle that has heating jacket; Under 60 rev/mins of stirrings, be warming up to 50～90 ℃, reaction 5～8h; When isocyanate group analysis on Content value near or when reaching theoretical value; React complete, vacuumizing and defoaming, cooling discharge packing make the A material;
(3) preparation of B material:
1. in the high speed dispersion still, add all liquid raw material in the prescription earlier, under 400～500 rev/mins of rotating speeds, successively add other raw material in the prescription again, then high speed dispersion 30min under 1000 commentaries on classics/min;
2. arrive below fineness 60 orders through the sand mill sand milling again;
3. fineness is met the requirements of B material and sucks in the dehydration degassing still, vacuumize, stir with 90～120 ℃ of temperature under, the dehydration 2h that outgases;
4. be pressed into cooling reactor, the cooling discharge packing makes the B material;
When (5) using 1: 2 by ratio of weight and the number of copies, the A component is mixed with the B component, get final product.
CTPU dedicated sealant surface layer coating for high-performance storage tank bottom of the present invention, wherein said A component and B component, the weight proportion when it uses is: A component: B component=1: 2.At 5-30 ℃, adopt methods such as brushing, blade coating, roller coating to construct.
The preferred CTPU dedicated sealant surface layer coating for high-performance storage tank bottom of the present invention, production technique, technical indicator are following:
One, the preferred CTPU dedicated sealant surface layer coating for high-performance storage tank bottom of the present invention is formed
The A component:
8～15 parts of tolylene diisocyanates,
20～35 parts of diphenylmethanediisocyanates,
50～80 parts of TBIOL2000 polyethers,
TMN300010～20 part,
0～10 part of TBIOL1000 polyethers.
The B component:
5～10 parts of amine chainextenders,
5～10 parts of TMN3000 polyethers
15～35 parts of TBIOL2000 polyethers,
110 5～15 parts in softening agent,
5～10 parts of wetting agent T80,
Reflective dose 2～8 parts,
1.0～2.0 parts of antioxidant 1010s,
0.8～1.5 part of UV light absorber uv327
20～40 parts of face, fillers,
5～10 parts of thinners.
1.0～2.0 parts of promotor
0.1～0.5 part of skimmer,
0.1～0.4 part of flow agent,
0.1～0.5 part of adhesion promoter.
Two, the production technique of CTPU dedicated sealant surface layer coating for high-performance storage tank bottom
(1) all liquid and solid material must be through vacuum or thermal dehydration, tests, reach moisture≤1 ‰ and o'clock could use.
(2) preparation of A component:
The A material by proportioning weight, under agitation is added in the reaction kettle that has heating jacket, under 60 rev/mins of stirrings; Be warming up to 50～90 ℃; Reaction 5～8h, when isocyanate group analysis on Content value near or when reaching theoretical value, react complete; Vacuumizing and defoaming, cooling discharge packing make the A material.
(3) preparation of B material:
1. in the high speed dispersion still, add all liquid raw material in the prescription earlier, under 400～500 rev/mins of rotating speeds, successively add other raw material, high speed dispersion 30min under 1000 commentaries on classics/min then in the prescription.
2. arrive below fineness 60 orders through the sand mill sand milling again.
③ The fineness of the required material B degassing vessel suction dehydration in vacuum, with stirring and the temperature 100 ℃ ~ 120 ℃, the dehydration degassing 2h, Hui no water flowing liquid out of the degassing process is completed when it is dehydrated .
4. be pressed into cooling reactor, the cooling discharge packing makes the B material.
Three, product the key technical indexes
The prepared CTPU dedicated sealant surface layer coating for high-performance storage tank bottom of the present invention is compared the positively effect that is had with existing sealing compound and is:
(1) CTPU dedicated sealant surface layer coating for high-performance storage tank bottom of the present invention; Because investment precoat directly contacts easy ageing with the external world; Therefore in prescription, strengthened age inhibiting effect; Added reflective dose, auxiliary agents such as combination oxidation inhibitor, UV light absorber, the work-ing life that can improve mechanical property and weathering resistance and coating greatly.Only need A, B=1 during construction: 2 liang of components mix in proportion and get final product.
(2) CTPU dedicated sealant surface layer coating for high-performance storage tank bottom of the present invention self has good elasticity, anti-aging, corrosion-resistant; Simultaneously very strong bonding strength is arranged with steel plate and concrete; The jar end that tank bottom deformation causes and the slit of concrete have effectively been prevented; Prevented the bottom corrosion that causes because of tank bottom deformation, can reach more than 10 years work-ing life.
(3) CTPU dedicated sealant surface layer coating for high-performance storage tank bottom prescription of the present invention is reasonable, and production technique is simple, and bonding force is high, and is ageing-resistant, flexible.This coating is mainly used in the storage tank bottom sealing; Also can be used for high ferro Passenger dedicated railway Bridge concrete has quarrel bridge floor, open bridge floor and railroad bridge culvert waterproofing work, also is applicable to the application of the aspects such as waterproof layer of other buildings that water resistance is had higher requirements, structures.
Description of drawings
Fig. 1 is storage tank bottom distortion synoptic diagram;
Fig. 2 is with the synoptic diagram after the sealer sealing, and 1 is basin, the 2nd among the figure, and initial conditions, the 3rd at the bottom of jar is at the bottom of upwarping jar, 4 be concrete pedestal, the 5th, sealer.
Embodiment
For simple and purpose clearly, the omission that hereinafter is appropriate the description of known technology, in order to avoid those unnecessary details influences are to the description of technical scheme of the present invention.Various raw materials all have commercially available.
Embodiment 1
1, the prescription of CTPU dedicated sealant surface layer coating for high-performance storage tank bottom:
The A component:
Tolylene diisocyanate 12kg,
Diphenylmethanediisocyanate 35kg,
TBIOL2000 polyethers 80kg,
TMN3000 20kg，
TBIOL1000 polyethers 5kg.
The B component:
Amine chainextender 10kg,
TMN3000 polyethers 10kg,
TBIOL2000 polyethers 35kg,
Softening agent 110: Witcizer 300 10kg,
Wetting agent T80 5.5kg,
Reflective dose of 2.0kg,
Antioxidant 1010 1.0kg,
UV light absorber uv327 0.8kg,
Face, filler: talcum powder 14kg, white titanium pigment 5.5kg, china clay 3kg, kaolin 3kg, white carbon black 0.15kg, carbon black 0.1kg,
Thinner: YLENE 5kg, vinyl acetic monomer 3kg, butanone 2kg,
Promotor: the plumbous 1kg of isocaprylic acid,
Skimmer: defom6800 0.3kg,
Flow agent: leveslip810 0.2kg,
Adhesion promoter: adherant1051 0.1kg.
2, the production technique of CTPU dedicated sealant surface layer coating for high-performance storage tank bottom
(1) all liquid and solid material must be through vacuum or thermal dehydration, tests, reach moisture≤0.01～0.05% and o'clock could use.
(2) preparation of A component: the A material is pressed proportioning weight; Under agitation be added in the reaction kettle that has heating jacket, under 60 rev/mins of stirrings, be warming up to 50～90 ℃; Reaction 5～8h; When isocyanate group analysis on Content value near or when reaching theoretical value, react complete, vacuumizing and defoaming, cooling discharge are packed.
(3) preparation of B material: 1. in the high speed dispersion still, add all liquid raw material in the prescription earlier, under 500 rev/mins of rotating speeds, successively add other raw material, high speed dispersion 30min under 1000 commentaries on classics/min then in the prescription.2. arrive below fineness 60 orders through the sand mill sand milling again.③ The fineness of the required material B degassing vessel suction dehydration in vacuum, with stirring, and the temperature of 100 ~ 120 ℃, dehydration degassing 2h, Hui no water flowing liquid out of the degassing process is completed when it is dehydrated.4., be pressed into cooling reactor, cooling discharge packing.
Embodiment 2
The prescription of CTPU dedicated sealant surface layer coating for high-performance storage tank bottom:
The A component:
Tolylene diisocyanate 8kg,
Diphenylmethanediisocyanate 20kg,
TBIOL2000 polyethers 50kg,
TMN30001 5kg，
TBIOL1000 polyethers 0kg.
The B component:
Amine chainextender 4kg,
TMN3000 polyethers 6kg,
TBIOL2000 polyethers 27.5kg,
Softening agent 110: DOP 8kg,
Wetting agent T80 5kg,
Promotor: stannous octoate 1.5kg,
UV light absorber uv327 0.8kg,
Reflective dose of 8kg,
Antioxidant 1010 2.0kg,
Face, filler: talcum powder 16kg, white titanium pigment 5kg, china clay 4kg, kaolin 1kg, white carbon black 0.15kg, carbon black 0.1kg.
Thinner: YLENE 7kg, vinyl acetic monomer 3kg,
Skimmer: defom5300 0.3kg,
Flow agent: leveslip875 0.2kg,
Adhesion promoter: adherant1051 0.1kg.
The production technique of CTPU dedicated sealant surface layer coating for high-performance storage tank bottom is identical with embodiment 1.
The prescription of CTPU dedicated sealant surface layer coating for high-performance storage tank bottom:
The A component:
Tolylene diisocyanate 15kg,
Diphenylmethanediisocyanate 25kg,
TBIOL2000 polyethers 60kg,
TMN3000 10kg，
TBIOL1000 polyethers 5kg.
The B component:
Amine chainextender 5kg,
TMN3000 polyethers 5kg,
TBIOL2000 polyethers 30kg,
Softening agent 110: Witcizer 300 8kg,
Wetting agent T80 5kg,
Reflective dose of 3.0kg,
Antioxidant 1010 1.0kg,
UV light absorber 327 0.8kg,
Face, filler: talcum powder 10kg, white titanium pigment 5kg, china clay 4kg, kaolin 7kg, white carbon black 0.15kg, carbon black 0.1kg
Thinner: YLENE 6kg, acetone 4kg,
Promotor: the plumbous 2.0kg of isocaprylic acid,
Skimmer: defom 5500 0.3kg,
Flow agent: leveslip8100 0.2kg,
Adhesion promoter: KL 0.1kg.
The production technique of CTPU dedicated sealant surface layer coating for high-performance storage tank bottom is identical with embodiment 1.
Embodiment performance comparison sheet
| Sequence number | Project | Embodiment 1 | Embodiment 2 | |
| 1 | Outward appearance | The A component is a thick liquid of the same name, and the B component is the silver gray mill base | The A component is a thick liquid of the same name, and the B component is the silver gray mill base | The A component is a thick liquid of the same name, and the B component is the silver gray mill base |
| 2 | Solid content (part 0 | 95 | 95 | 95 |
| 3 | Tensile strength (MPa) | 3.70 | 3.85 | 3.55 |
| 4 | Unit elongation (part) | 860 | 750 | 950 |
| 5 | With concrete binding intensity (MPa) | 3.5 | 3.6 | 4.1 |
| 6 | With metallic substance cohesive strength (MPa) | 3.2 | 3.4 | 3.7 |
| 7 | Time of drying (surface drying h) | 5 | 6 | 5.8 |
| 8 | Watertightness (0.3MPa) | 30 minutes waterproof | 30 minutes waterproof | 30 minutes waterproof |
| 9 | Low temperature flexibility | -40 ℃ of following constant temperature 2h around φ 10mm mandrel rod, do not ftracture. | -40 ℃ of following constant temperature 2h around φ 10mm mandrel rod, do not ftracture | -40 ℃ of following constant temperature 2h around φ 10mm mandrel rod, do not ftracture |
| 10 | Resistance to impact shock (MPa) | 5.0 | 5.7 | 6.1 |
| 11 | Tear-resistant intensity (N/mm) | 6 | 6.8 | 7.2 |
Embodiment 4
Construction embodiment
Because the pedestal and the tank body base plate bonded position of storage tank; Along with the variation of envrionment temperature, base plate is radially stretched, or storage tank is failed the load change of reserves and is caused the storage tank distortion; And margin plate since with firm welded together can't the expanding outwardly of base plate; Result plate place on the edge of deforms, and is as shown in Figure 1, a crack of formation.When the storage tank slack tank, tank body restores to the original state, and margin plate but is upturned owing to viscous deformation, sees 2 among Fig. 1.Sealing compound is injected the crack that storage tank seat board outward flange and pedestal form, as shown in Figure 2, effectively stop the invasion around the fangs portion such as environmental factors, reach the purpose of protection storage tank seat board.
The above; It only is preferred embodiment of the present invention; Be not that the present invention is done any pro forma restriction, every foundation technical spirit of the present invention all still belongs in the scope of technical scheme of the present invention any simple modification, equivalent variations and modification that above embodiment did.
Claims (5)
1.CTPU dedicated sealant surface layer coating for high-performance storage tank bottom is characterized in that it is made up of A, B two-pack, adopts the preparation method of CTPU dedicated sealant surface layer coating for high-performance storage tank bottom synthetic; Wherein, A component parts by weight are: 8～20 parts of tolylene diisocyanates, 20～40 parts of diphenylmethanediisocyanates, 20～80 parts of TBIOL2000 polyethers, 10～25 parts of TMN3000 polyethers, 0～15 part of TBIOL1000 polyethers;
B component parts by weight are: 4～15 parts of amine chainextenders, 5～15 parts of TMN3000 polyethers, 15～40 parts of TBIOL2000 polyethers; 110 5～20 parts in softening agent; 5～15 parts of wetting agents, reflective dose 2～10 parts, 1.0～2.5 parts of antioxidant 1010s; 20～45 parts of 0.8～2.0 part of UV light absorber uv327,1.0～2.5 parts of promotor, face, filler, 5～15 parts of thinners, skimmer 0.1～0.5, flow agent 0.1～0.4, adhesion promoter 0.1～0.5; Wherein by ratio of weight and the number of copies, A component: B component=1: 2; Its preparation method is following:
(1) all liquid and solid material must reach moisture≤0.01～0.05% through vacuum or thermal dehydration, test;
(2) preparation of A component: press A component weight proportion, under agitation, be added in the reaction kettle that has heating jacket; Under 60 rev/mins of stirrings, be warming up to 50～90 ℃, reaction 5～8h; When isocyanate group analysis on Content value near or when reaching theoretical value; React complete, vacuumizing and defoaming, cooling discharge packing make the A material;
(3) preparation of B component:
1. in the high speed dispersion still, add all liquid raw material in the prescription earlier, under 400～500 rev/mins of rotating speeds, successively add other raw material in the prescription again, then high speed dispersion 30min under 1000 commentaries on classics/min;
2. arrive below fineness 60 orders through the sand mill sand milling again;
3. fineness is met the requirements of the B component and sucks in the dehydration degassing still, vacuumize, stir with 90～120 ℃ of temperature under, the dehydration 2h that outgases;
4. be pressed into cooling reactor, the cooling discharge packing makes the B material;
When (5) using 1: 2 by ratio of weight and the number of copies, the A component is mixed with the B component, get final product.
2. CTPU dedicated sealant surface layer coating for high-performance storage tank bottom according to claim 1, amine chainextender wherein are 3.3 '-two chloro-4.4 '-diphenyl methyl diamines; Reflective dose is clad aluminum silver powder; Wetting agent is a tween-80; Softening agent 110 is Witcizer 300 or DOP; Promotor is that stannous octoate or isocaprylic acid are plumbous; Skimmer is defom6800,5300 or 5500; Adhesion promoter is adherant1051 or KL; Flow agent is leveslip810,875 or 579; Face, filler are pigment of all kinds, white titanium pigment, kaolin, talcum powder, china clay, white carbon black, carbon black; Thinner is one or more a mixture of YLENE, ETHYLE ACETATE, methyl acetate, acetone, isopropyl acetone, butanone.
3. CTPU dedicated sealant surface layer coating for high-performance storage tank bottom according to claim 1; CTPU dedicated sealant surface layer coating for high-performance storage tank bottom wherein under 5～30 ℃, adopts brushing, blade coating, roller coating method to construct.
4. the said CTPU dedicated sealant surface layer coating for high-performance storage tank bottom of claim 1 is in the application of preparation buildings, structures building seal aspect.
5. the application of the said CTPU dedicated sealant surface layer coating for high-performance storage tank bottom of claim 1 seal aspect at the bottom of jar.
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| CN102344139A (en) * | 2011-07-10 | 2012-02-08 | 段晓燕 | Seal between silicon carbide smelting furnace side wall and ground |
| EP2896667A1 (en) | 2014-01-21 | 2015-07-22 | Grupo Navec Servicios Industriales, SL | Repairing and sealing method for tank with leak problems due corrosion, and repair sealer coating |
| CN105273601A (en) * | 2014-07-24 | 2016-01-27 | 佛山市顺德区合胜化工实业有限公司 | High-strength polyurethane waterproof coating material and preparation method thereof |
| CN104673076A (en) * | 2015-01-26 | 2015-06-03 | 徐州卧牛山新型防水材料有限公司 | Novel high-strength polyurethane waterproofing paint and preparation method thereof |
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| CN1490369A (en) * | 2002-10-14 | 2004-04-21 | 大庆油田长垣建材有限公司 | Preparation for anticorrosive protective spraying material and constructing method thereof |
| CN1594481A (en) * | 2004-06-24 | 2005-03-16 | 淄博海特曼化工有限公司 | Solvent-free high-strength polyurethane cementing sealing glue and method for making same |
| CN1831068A (en) * | 2006-02-21 | 2006-09-13 | 上海瑞鹏化工材料科技有限公司 | Polyurea coating used for protection foamed articles and its prepn. method |
| CN101407693A (en) * | 2008-11-26 | 2009-04-15 | 武汉工程大学 | Room curing solvent-free polyurethane waterproof coating material and preparation thereof |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1490369A (en) * | 2002-10-14 | 2004-04-21 | 大庆油田长垣建材有限公司 | Preparation for anticorrosive protective spraying material and constructing method thereof |
| CN1594481A (en) * | 2004-06-24 | 2005-03-16 | 淄博海特曼化工有限公司 | Solvent-free high-strength polyurethane cementing sealing glue and method for making same |
| CN1831068A (en) * | 2006-02-21 | 2006-09-13 | 上海瑞鹏化工材料科技有限公司 | Polyurea coating used for protection foamed articles and its prepn. method |
| CN101407693A (en) * | 2008-11-26 | 2009-04-15 | 武汉工程大学 | Room curing solvent-free polyurethane waterproof coating material and preparation thereof |
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