CN104830050B - A kind of weather-proof anticorrosive steel strand covering material and preparation method thereof - Google Patents
A kind of weather-proof anticorrosive steel strand covering material and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a kind of weather-proof anticorrosive steel strand covering material and preparation method thereof.Covering material is mixed by A, B component, component A percentage composition：Aliphatic isocyanates compound 15 30, polyalcohol or polyetheramine 68 85, modified additive 0.1 0.3.B component percentage is constituted：Plasticizer 0 10, modified chain extender, 10 20, mixing secondary amino group polyethers 30 65, the weather-proof anti-corrosion factor 12, filler 20 50, pigment 10 20, modified accelerator 0.5 2 and wetting and dispersing auxiliary agent 0.5 1.This material can substitute PE covering materials completely.Because resin chemical stability is good, completely cut off contact of the hazardous medium with base steel, it is highly beneficial safely to structure.Because its excellent property makes it change number of times reduction, increase the service life, so as to reduce the cost of integrated engineering.It is particularly weather-proof to be better than at least more than 10 times of PE covering materials with antiseptic property.
Description
Technical field
The present invention relates to steel strand wires covering material, more particularly, to a kind of weather-proof anticorrosive steel strand covering material and its preparation
Method.
Background technology
Steel strand wires are crucial bearing carriers in big-and-middle-sized bridge, and its anti-corrosion material is directly connected to the durability of component
And security.Many engineerings are destroyed because of steel strand wires corrosion, and maintenance cost substantially exceeds expenditure of construction, and service life is far below and set
The life-span is counted, great potential safety hazard is also caused to engineering, so far weather-proof, the anticorrosive work for steel strand wires are particularly significant.Mesh
Before, common steel strand wires covering material uses PE（HDPE is high density base ethene）, the material is only capable of protecting steel to twist in a short time
Line is not by corrosion.Once after PE agings, will occur the problem of cracking comes off, corrosion-resistant performance so far will be lost.
The anticorrosion process of steel strand wires has many kinds, and wherein cladding process is a kind of traditional anti-corrosion method.Plastic is to divide
Sub- compound plastic sheath is squeezed and is enclosed on outside steel strand wires, and the sheath is not bonded with steel strand wires, and to isolate corrosion background as target, it adds
Work method is commonly that steel strand wires external sheath is enclosed on extruding machine.The covering material of selection is generally high density polyethylene (HDPE)
（HDPE）.It is using the defect of the material：1st, in the strong place easily aging of solar ultraviolet, it is restricted using scope；2nd, the summer
Its case body temperature could possibly be higher than the outer temperature of casing, when temperature is at a relatively high, may have an impact to HDPE；3rd, meeting in manufacturing process
Environmentally harmful gas is discharged, is unfavorable for environmental protection.
The content of the invention
In view of the problem of prior art is present and deficiency, the present invention provide a kind of weather-proof anticorrosive steel strand covering material and its
Preparation method.Many experiments through research staff, successfully produce a kind of better than HDPE covering material, and as macromolecule changes
Property apply brush-type covering material.Its great advantage is that its durability, weatherability, chemical-resistant are splendid.
The present invention is adopted the technical scheme that：A kind of weather-proof anticorrosive steel strand covering material, it is characterised in that by component A
Mixed with B component, wherein component A is made up of by weight percentage following component：
Aliphatic isocyanates compound 15-30
Polyalcohol or polyetheramine 68-85
Modified additive 0.1-0.3.
B component is made up of by weight percentage following component：
Plasticizer 0-10
Modified chain extender 10-20
Mix secondary amino group polyethers 30-65
Weather-proof anti-corrosion factor 1-2
Filler 20-50
Pigment 10-20
Modified accelerator 0.5-2
Wetting and dispersing auxiliary agent 0.5-1.
A kind of preparation method of weather-proof anticorrosive steel strand covering material of the present invention, it is characterised in that the wherein system of component A
Have following steps：
Step one, is by polyalcohol or polyetheramine under -0.08MPa vacuum states, and temperature is 120 DEG C, vacuum dehydration 2-3h
It is standby；
Step 2 is warming up in aliphatic isocyanates class compound sucting reaction kettle in the state of nitrogen protection
40-45 DEG C, the polyalcohol that step one is obtained or polyetheramine add reactor mixing；
The mixture that step 3 step 2 is obtained, 75-85 DEG C is warming up to when mixing temperature no longer rises,
It is incubated 3-4h；
After step 4 insulations terminate, modified additive is mixed into wherein, is sufficiently mixed after 30min, vacuum outgas 30min, examined
NCO content is surveyed, it is qualified to pack.
The preparation of B component has the following steps：
Step one, is by plasticizer, modified chain extender, mixing secondary amino group polyethers, pigment, filler, the weather-proof anti-corrosion factor by suitable
Sequence is added in reactor and mixed, and is then pumped into horizontal sand mill and is disperseed 60- in the state of 400-500r/min is scattered at a high speed
120min；
The slurries that step one is obtained are pumped into coating sand mill and are ground by step 2, untill fineness is qualified；
The slurries that step 2 is ground are pumped into dehydration degassing reactor and carry out dehydration degassing by step 3, and temperature is 100-120
DEG C, vacuumize -0.08MPa, time 1.5-2h；
After step 4 step 3 is completed, when being cooled to 60-70 DEG C, stirring adds wetting and dispersing auxiliary agent and modified rush
Enter agent, mix 30min, can be packed after degassing.
The present invention has the special feature that and had the beneficial effect that：
1st, simple to operate, room temperature is operable.The gelation rate of covering material is fast, general gel time 5-15min it
Between, it is adapted to the requirement of steel strand wires flowing water cladding process.
2nd, the weather resistance of the material is splendid, the irradiation of ultraviolet throughout the year can be subjected to, without aging.
3rd, seawater corrosion resistance is splendid.
4th, the color of covering material can arbitrarily be transferred according to customer requirement.
5th, the feature of environmental protection of material is splendid, VOC zero-emissions, and coating can reach food-grade requirement after it solidifies.
With reference to above feature, this macromolecule modified covering material that the present invention is developed is in terms of environmental protection and durability
Consideration can substitute existing traditional PE covering materials completely.Because resin chemical stability is good, hazardous medium and base steel are completely cut off
Contact, the safety to structure is highly beneficial.Because its excellent property makes it change number of times reduction, service life is extended,
So as to reduce the cost of integrated engineering.It is particularly weather-proof to be better than at least more than 10 times of PE covering materials with antiseptic property.
Embodiment
The invention will be further described with reference to embodiments：
A kind of weather-proof anticorrosive steel strand covering material action principle of the present invention is as follows：
This covering material is the macromolecule modified polymer of two-component, the isocyano collection mainly in isocyanate compound
There is amino effect crosslinking in group with the hydroxyl in amine terminated polyether, is wherein aided with antiseptic property in amine terminated polyether component superior
Filler and the splendid nano material of weather resistance are used as filling components.Several persons mutually cooperate with, and are finally reached this covering material
Excellent properties.
The capital equipment of the component production and application of A, B two is following well-known devices in the industry：
（1）1000-5000L stainless steel cauldrons（To carry condensing plant）；
（2）WSM sealed horizontal sand mills；
（3）Coating packing equipment；
（4）Vavuum pump.
It is as follows using the steel strand wires technical parameter of this covering material：
（1）Tensile strength：≥10MPa；
（2）Elongation at break：≥350%；
（3）Tearing strength：≥60N.mm；
（4）Hardness（Shore A）：≥70；
（5）Adhesion strength：>=2.0MPa or the destruction of non-stick junction；
（6）Operable time：≤15min；
（7）Low-temperature bending：- 30 DEG C of 4h are unchanged；
（8）Weatherability：Outdoor normal illumination 5-10y is unchanged；30w uviol lamp direct irradiations are unchanged January；
（9）Corrosion resistance：
10%H2SO4Soak 1y unchanged；
10%NaOH immersions 1y is unchanged；
Sea water immersion 1y is unchanged；
Oil product immersion 1y is unchanged；
Organic solvent immersion 1y is unchanged；
Sewage immersion 1y is unchanged.
Modified additive in a kind of weather-proof anticorrosive steel strand covering material of the present invention, component A selects benzene sulfonyl chloride.
Polyalcohol or polyetheramine in a kind of weather-proof anticorrosive steel strand covering material of the present invention, component A are preferentially from poly-
Carbonate diol or amino-polyether.
Modification chain extender in a kind of weather-proof anticorrosive steel strand covering material of the present invention, B component is preferentially selected
Unilink4200。
The weather-proof anti-corrosion factor in a kind of weather-proof anticorrosive steel strand covering material of the present invention, B component is nano zine oxide
With the mixture of nano titanium oxide, its mixed proportion is 1:1.
A kind of weather-proof anticorrosive steel strand covering material of the present invention, the modification accelerator in B component is T-12, organo-bismuth,
PU delayed catalysts C223 mixture, its mixed proportion is 1:1:1.
Mixing secondary amino group polyethers in a kind of weather-proof anticorrosive steel strand covering material of the present invention, B component is molecular weight
The mixture of 2000 secondary amino group polyethers and the secondary amino group polyethers of molecular weight 400, the mean molecule quantity of the mixture is 1600.
Filler in a kind of weather-proof anticorrosive steel strand covering material of the present invention, B component selects talcum powder, zinc oxide, cloud
Female powder, blanc fixe and active five kinds of coarse whiting.
Wetting and dispersing auxiliary agent in a kind of weather-proof anticorrosive steel strand covering material of the present invention, B component preferentially selects BYK-
Two kinds of 2070 and BYK-116.
Embodiment 1：
Component A is made up of by weight percentage following component：
IPDI 30
Amino-polyether 2,000 69.8
Benzene sulfonyl chloride 0.2.
The preparation of component A has the following steps：
Step one, is in proportion by amino-polyether 2000 under -0.08MPa vacuum states, and temperature is 120 DEG C, vacuum dehydration
2.5h it is standby；
Step 2 is in proportion by aliphatic isocyanates class compound IPDI sucting reaction kettles, the shape protected in nitrogen
40 DEG C are warming up under state, the amino-polyether 2000 that step one is obtained is added into reactor mixes（, should according to the severity of reaction
Step can be using dropwise addition technique）；
The mixture that step 3 step 2 is obtained, is warming up to 80 DEG C, insulation when mixing temperature no longer rises
3.5h；
After step 4 insulations terminate, modified additive benzene sulfonyl chloride is mixed into wherein, 30min, vacuum outgas is sufficiently mixed
After 30min, NCO content is detected（Content 8.0-9.0%）, it is qualified to pack.
B components are made up of by weight percentage following component：
DOP 8
Unilink4200 10
Mix secondary amino group ether 40
Nano zine oxide 1
Nano titanium oxide 1
Talcum powder 8
Zinc oxide 6
Mica powder 5
Blanc fixe 6
Active coarse whiting 4
Pigment 10
Modified accelerator 0.5
BYK-2070 0.25
BYK-116 0.25。
The preparation of B component has the following steps：
Step one, is in proportion by plasticizer DOP, modified chain extender Unilink4200, mixing secondary amino group polyethers（For molecule
The mixture of 2000 secondary amino group polyethers and the secondary amino group polyethers of molecular weight 400 is measured, the mean molecule quantity of the mixture is
1600）, pigment, talcum powder, zinc oxide, mica powder, blanc fixe and active five kinds of fillers of coarse whiting, nano zine oxide and nanometer
Titanium dioxide is sequentially added into mixing in reactor, is then pumped into horizontal sand mill and divides in the state of 450r/min is scattered at a high speed
Dissipate 90min；
The slurries that step one is obtained are pumped into coating sand mill and are ground by step 2, untill fineness is qualified（Carefully
Spend≤80 μ）；
The slurries that step 2 is ground are pumped into dehydration degassing reactor and carry out dehydration degassing by step 3, and temperature is 110 DEG C,
Vacuumize -0.08MPa, time 1.5h；
After step 4 step 3 is completed, when being cooled to 65 DEG C, stirring in proportion adds wetting and dispersing auxiliary agent BYK-2070
With BYK-116 and modified accelerator（T-12, organo-bismuth, PU delayed catalysts C223 mixture, its mixed proportion are 1:1:
1）, 30min is mixed, can be packed after degassing.
Embodiment 2：
Component A is made up of by weight percentage following component：
IPDI 30
PCDL 2,000 69.8
Benzene sulfonyl chloride 0.2.
The preparation of component A has the following steps：
Step one, is in proportion by PCDL 2000 under -0.08MPa vacuum states, and temperature is 120 DEG C, vacuum
It is dehydrated 2.5h standby；
Step 2 is in proportion by aliphatic isocyanates class compound IPDI sucting reaction kettles, the shape protected in nitrogen
40 DEG C are warming up under state, the PCDL 2000 that step one is obtained is added into reactor mixes（According to the fierce journey of reaction
Spending the step can be using dropwise addition technique）；
The mixture that step 3 step 2 is obtained, is warming up to 80 DEG C, insulation when mixing temperature no longer rises
3.5h；
After step 4 insulations terminate, modified additive benzene sulfonyl chloride is mixed into wherein, 30min, vacuum outgas is sufficiently mixed
After 30min, NCO content is detected（Content 8.0-9.0%）, it is qualified to pack.
B component is made up of by weight percentage following component：
Unilink4200 15
Mix secondary amino group ether 45
Nano zine oxide 1
Nano titanium oxide 1
Talcum powder 6
Zinc oxide 6
Mica powder 5
Blanc fixe 6
Active coarse whiting 4
Pigment 10
Modified accelerator 0.5
BYK-2070 0.25
BYK-116 0.25。
The preparation of B component has the following steps：
Step one, in proportion will modified chain extender Unilink4200, mixing secondary amino group polyethers（For the secondary of molecular weight 2000
The mixture of the secondary amino group polyethers of amino-polyether and molecular weight 400, the mean molecule quantity of the mixture is 1600）, pigment, talcum
Powder, zinc oxide, mica powder, five kinds of fillers of blanc fixe and active coarse whiting, nano zine oxide and nano titanium oxide are in order
Add in reactor and mix, be then pumped into horizontal sand mill and disperse 90min in the state of 450r/min is scattered at a high speed；
The slurries that step one is obtained are pumped into coating sand mill and are ground by step 2, untill fineness is qualified（Carefully
Spend≤80 μ）；
The slurries that step 2 is ground are pumped into dehydration degassing reactor and carry out dehydration degassing by step 3, and temperature is 110 DEG C,
Vacuumize -0.08MPa, time 1.5h；
After step 4 step 3 is completed, when being cooled to 65 DEG C, stirring in proportion adds wetting and dispersing auxiliary agent BYK-2070
With BYK-116 and modified accelerator（T-12, organo-bismuth, PU delayed catalysts C223 mixture, its mixed proportion are 1:1:1）,
30min is mixed, can be packed after degassing.
Embodiment 3：
Component A is made up of by weight percentage following component：
IPDI 25
Amino-polyether 2,000 74.8
Benzene sulfonyl chloride 0.2.
The preparation of component A has the following steps：
Step one, is in proportion by amino-polyether 2000 under -0.08MPa vacuum states, and temperature is 120 DEG C, vacuum dehydration
2.5h it is standby；
Step 2 is in proportion by aliphatic isocyanates class compound IPDI sucting reaction kettles, the shape protected in nitrogen
40 DEG C are warming up under state, the amino-polyether 2000 that step one is obtained is added into reactor mixes（Should according to the severity of reaction
Step can be using dropwise addition technique）；
The mixture that step 3 step 2 is obtained, is warming up to 80 DEG C, insulation when mixing temperature no longer rises
3.5h；
After step 4 insulations terminate, modified additive benzene sulfonyl chloride is mixed into wherein, 30min, vacuum outgas is sufficiently mixed
After 30min, NCO content is detected（Content 8.0-9.0%）, it is qualified to pack.
B components are made up of by weight percentage following component：
DOP 5
Unilink4200 13
Mix secondary amino group ether 40
Nano zine oxide 1
Nano titanium oxide 1
Talcum powder 8
Zinc oxide 6
Mica powder 5
Blanc fixe 6
Active coarse whiting 4
Pigment 10
Modified accelerator 0.5
BYK-2070 0.25
BYK-116 0.25。
The preparation of B component has the following steps：
Step one, is in proportion by plasticizer DOP, modified chain extender Unilink4200, mixing secondary amino group polyethers（For molecule
The mixture of 2000 secondary amino group polyethers and the secondary amino group polyethers of molecular weight 400 is measured, the mean molecule quantity of the mixture is
1600）, pigment, talcum powder, zinc oxide, mica powder, blanc fixe and active five kinds of fillers of coarse whiting, nano zine oxide and nanometer
Titanium dioxide is sequentially added into mixing in reactor, is then pumped into horizontal sand mill and divides in the state of 450r/min is scattered at a high speed
Dissipate 90min；
The slurries that step one is obtained are pumped into coating sand mill and are ground by step 2, untill fineness is qualified（Carefully
Spend≤80 μ）；
The slurries that step 2 is ground are pumped into dehydration degassing reactor and carry out dehydration degassing by step 3, and temperature is 110 DEG C,
Vacuumize -0.08MPa, time 1.5h；
After step 4 step 3 is completed, when being cooled to 65 DEG C, stirring in proportion adds wetting and dispersing auxiliary agent BYK-2070
With BYK-116 and modified accelerator（T-12, organo-bismuth, PU delayed catalysts C223 mixture, its mixed proportion are 1:1:1）,
30min is mixed, can be packed after degassing.
Three above embodiment meets the technical parameter of steel strand wires requirement, and is successfully applied in the cladding of steel strand wires.
Covering material performance is remarkable, ultraviolet radiation resisting, antiacid alkali corrode, anti-aging indices be ten times of traditional PE materials with
On.
The weather-proof anticorrosive steel strand covering material of the present invention is a kind of high intensity covering material of modification, in steel strand wires cladding
When, first by the component of A, B two in mass ratio 1:1 or other ratio is strictly matched（The proportioning is depending on customer demand）, it is well mixed
Afterwards cladding process is carried out in injection coating machine mixing chamber.
Claims (4)
1. a kind of weather-proof anticorrosive steel strand covering material, it is characterised in that mixed by component A and B component, wherein component A
It is made up of by weight percentage following component：
Aliphatic isocyanates compound 15-30
Polyalcohol or polyetheramine 68-85
Modified additive 0.1-0.3；
B component is made up of by weight percentage following component：
Plasticizer 0-10
Modified chain extender 10-20
Mix secondary amino group polyethers 30-65
Weather-proof anti-corrosion factor 1-2
Filler 20-50
Pigment 10-20
Modified accelerator 0.5-2
Wetting and dispersing auxiliary agent 0.5-1；
Modified additive in described component A selects benzene sulfonyl chloride；Polyalcohol or polyetheramine in component A select makrolon two
Alcohol or amino-polyether；
Modification chain extender in described B component selects Unilink4200；The weather-proof anti-corrosion factor in B component is nano oxidized
The mixture of zinc and nano titanium oxide, its mixed proportion is 1:1；Modification accelerator in B component is T-12, organo-bismuth, PU
Delayed catalyst C223 mixture, its mixed proportion is 1:1:1；Filler in B component selects talcum powder, zinc oxide, mica
Powder, blanc fixe and active five kinds of coarse whiting.
2. a kind of weather-proof anticorrosive steel strand covering material according to claim 1, it is characterised in that the mixing in B component
Secondary amino group polyethers for molecular weight 2000 secondary amino group polyethers and molecular weight 400 secondary amino group polyethers mixture, the mixture
Mean molecule quantity is 1600.
3. a kind of weather-proof anticorrosive steel strand covering material according to claim 1, it is characterised in that the wetting in B component
Dispersing aid selects BYK-2070 and two kinds of BYK-116.
4. a kind of preparation method of weather-proof anticorrosive steel strand covering material according to claim 1, it is characterised in that wherein
The preparation of component A has the following steps：
Step one, is by polyalcohol or polyetheramine under -0.08MPa vacuum states, and temperature is 120 DEG C, and vacuum dehydration 2-3h is standby；
Step 2 is warming up to 40-45 by aliphatic isocyanates class compound sucting reaction kettle in the state of nitrogen protection
DEG C, the polyalcohol or polyetheramine that step one is obtained add reactor mixing；
The mixture that step 3 step 2 is obtained, is warming up to 75-85 DEG C, insulation when mixing temperature no longer rises
3-4h；
After step 4 insulations terminate, modified additive is mixed into wherein, is sufficiently mixed after 30min, vacuum outgas 30min, detected
NCO content is qualified to pack；
The preparation of B component has the following steps：
Step one, adds plasticizer, modified chain extender, mixing secondary amino group polyethers, pigment, filler, the weather-proof anti-corrosion factor in order
Enter mixing in reactor, be then pumped into horizontal sand mill and disperse 60-120min in the state of 400-500r/min is scattered at a high speed；
The slurries that step one is obtained are pumped into coating sand mill and are ground by step 2, untill fineness is qualified；
The slurries that step 2 is ground are pumped into dehydration degassing reactor and carry out dehydration degassing by step 3, and temperature is 100-120 DEG C,
Vacuumize -0.08MPa, time 1.5-2h；
After step 4 step 3 is completed, when being cooled to 60-70 DEG C, stirring adds wetting and dispersing auxiliary agent and modified accelerator,
30min is mixed, can be packed after degassing.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102181218A (en) * | 2011-03-18 | 2011-09-14 | 西北矿冶研究院 | Novel polymer anticorrosive coating material |
| CN102993929A (en) * | 2012-09-29 | 2013-03-27 | 北京东方雨虹防水技术股份有限公司 | Epoxy-modified spray polyurea anticorrosive paint for surface of steel structure and preparation and using method of paint |
| CN103740247A (en) * | 2014-01-07 | 2014-04-23 | 海洋化工研究院有限公司 | Spray polyurea elastomer applied to marine drilling platform corrosion prevention as well as preparation method and construction method thereof |
-
2015
- 2015-05-08 CN CN201510231347.1A patent/CN104830050B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102181218A (en) * | 2011-03-18 | 2011-09-14 | 西北矿冶研究院 | Novel polymer anticorrosive coating material |
| CN102993929A (en) * | 2012-09-29 | 2013-03-27 | 北京东方雨虹防水技术股份有限公司 | Epoxy-modified spray polyurea anticorrosive paint for surface of steel structure and preparation and using method of paint |
| CN103740247A (en) * | 2014-01-07 | 2014-04-23 | 海洋化工研究院有限公司 | Spray polyurea elastomer applied to marine drilling platform corrosion prevention as well as preparation method and construction method thereof |
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