CN103788913B - Petroleum pipe line end socket polyaspartic ester type seal gum and preparation method thereof - Google Patents
Petroleum pipe line end socket polyaspartic ester type seal gum and preparation method thereof Download PDFInfo
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Abstract
The invention provides a kind of petroleum pipe line end socket polyaspartic ester type seal gum and preparation method thereof.Petroleum pipe line end socket polyaspartic ester type seal gum of the present invention comprises the following each component of weight proportion: component A: aliphatic isocyanates 20-70 part; Polyether glycol 20-65 part; B component: poly-aspartic-acid resin 30-70 part; Steric hindrance ammonia chainextender 30-44 part; Filler 5-50 part; Auxiliary agent 2-4 part; Pigment 1-3 part; Softening agent 4-10 part.The mass ratio of described component A and B component is 1:1 ~ 1.3:1.Petroleum pipe line end socket polyaspartic ester type sealant formula science of the present invention, rationally, while oil resistant, resistant to liquid medium, weathering resistance and ageing resistance are superior, reach unanimity with the mechanical property of pipeline corrosion protection polyureas, sticking power is excellent.
Description
Technical field
The present invention relates to polyureas technology, particularly relate to a kind of petroleum pipe line end socket polyaspartic ester type seal gum and preparation method thereof.
Background technology
Along with the development of national economy, the advantage of pipeline oil transportation highlights day by day.The general employing of laying of oil pipeline is maked somebody a mere figurehead or buried two kinds of modes on the ground.But no matter take that mode, when metallic conduit contacts with surrounding medium, cause its surface corrosion due to generation chemical action or electrochemical action.This phenomenon is very general.After metallic conduit is corroded, all will change in profile, color and luster and mechanical property, affect the quality of institute's oil transportation product, and shorten the work-ing life of oil pipeline, seriously may cause leakage, contaminate environment, even can not use.
The common corrosion of petroleum pipe line comprises chemical corrosion and galvanic corrosion.Chemical corrosion: exposed metal/bare metal in atmosphere, when contacting with the oxygen in air, sulfurous gas, chlorine etc., generates corresponding compound (oxide compound, sulfide, muriate etc.) on the metal surface.Organic sulfide (sulphur, hydrogen sulfide, mercaptan, thioether, epithio ether, disulphide, thiophene etc.) simultaneously containing various ways in oil product, naphthenic acid etc. also can produce chemical corrosion to metallic oil pipeline.Galvanic corrosion: when metal and electrolyte solution contacts, the corrosion caused by electrochemistry.Metallic conduit and the air containing moisture, soil, ocean contact, the carbonic acid gas contained in these media, sulfurous gas, hydrogenchloride, sodium-chlor and dust are all the electrolyte solutions of different concns.
Oil pipeline end socket is the most important structure in whole pipeline, due to the complicacy of its structure, construction and use, be the position suffering chemical corrosion the most serious in pipe laying, be also oil seepage, leak the position usually occurred, therefore the sealing at end socket place is extremely important.Find a kind of corrosion-resistant, good sealing effect, and have the sealing material of fine consistency very important with polyurea materials.
At present, protective system for inner and outer walls of pipeline mainly contains the multiple materials such as petroleum pitch, coal tar enamel, clinkery epoxy powder, double-deck welding epoxy powder, 3PE structural anticorrosion layer and spray polyurea material, wherein polyurea materials has more advantage than other materials, break traditional preservative coat need heating and be wound around the defect brought, one time coating thickness can reach 1-2mm, this makes its coating process greatly simplify, and can guarantee the overall antiseptic property of pipeline.Polyurea materials is that a kind of curing molding grown up in recent years is fast, the ep-type material of constructability.It is high with tensile strength, snappiness good, and the premium properties such as waterproof, protection against corrosion, wear-resisting, anti-slippery, heat shock resistance, low temperature resistant and good decorative property, be subject to people more and more to favor, show unique characteristics in ready coating in the big area such as corrosion protection coating and wear-resistant coating.Polyurea materials has excellent physicals, antiseptic property and workability concurrently, is the preferred material in inner and outer walls of pipeline antiseptic project.
Spray polyurea speed of response is fast, gel time is short (only having short tens seconds), can at comparatively smooth inner and outer walls of pipeline rapid shaping.But spray polyurea is not suitable for complex structure, the cap that flex point, node are many.This is because spray polyurea is when cap is constructed, because set time is fast, gel time is short, and trickling property is poor, easily causes drain spray and spraying inequality; Wetting property is poor, poorly sealed, and the problem such as easily come off.
Current petroleum pipe line end socket sealing mainly adopts polyurethane sealant, and polyurethane sealant is bonding stable, and excellent spring, anti tear, wear-resisting, puncture resistant, does not pollute base material, acid and alkali-resistance, and resistant to liquid medium is corrosion-free to concrete, steel substrate etc.The comparatively poly-sulphur of price, organosilicon sealant are cheap, and have good consistency (this is that other sealing materials do not possess) with polyurea materials.
Polyurethane sealant is by single component, two-pack two kinds of base types.The basal component of single-component product is end NCO base performed polymer, and the hydroxyl isoreactivity group generation chemical reaction that the water that can adsorb with substrate surface after bonding and surface exist, finally generates urea bond structure and solidify.Single-component mist-solidifying polyurethane sealant is a kind of response type seal gum utilizing micro-moisture in air to solidify as crosslinking accelerator.Single-component product at room temperature can carry out moisture-curable, operation is easy, but there is following shortcoming in it: single component sealant package stability packed and ectocine larger, usual solidification is slower, under high humid and warm environment, solidification may produce bubble and crackle, affect use properties and work-ing life, and many occasions need primary coat.
Double Component Polyurethane Sealant is solidified by the NCO base of base polyurethane prepolymer for use as and the active hydrogen compounds cross-linking reaction of another component.Self-vulcanizing speed is faster than single component, and cost value is lower, but still there is following shortcoming as the sealing material at petroleum pipe line end socket place:
A. the more anticorrosion polyureas of sticking power is poor.Polyurethane sealant and polyurea materials belong to polyurethane system, the consistency of bi-material is better, but also there is certain difference in the two: the tensile strength >=20MPa of pipeline corrosion protection polyurea materials, elongation at break >=10%, hardness is high, rigid material is belonged to, to the sticking power excellence (sticking power >=9MPa) of steel substrate in polyurethane system.Tensile strength >=the 6Mpa of polyurethane sealant, elongation at break >=100%, hardness is low, in polyurethane system, belong to flexible materials, without in primary coat situation, to the poor adhesive force (sticking power >=2.5MPa) of steel substrate.
B. resistant to liquid medium, oil-proofness are not as polyurea materials.Containing a large amount of amino-formate bonds in polyurethane sealant, this bond polarity can not show a candle to urea bond polarity in polyurea materials.Therefore polyurea materials is finer and close, oil resistant, resistant to liquid medium more.In this, polyurethane sealant can not show a candle to polyurea materials.
C. contain a large amount of aromatic isocyanate polymers in polyurethane sealant, xanthochromia is serious, and weather resisteant is poor, and resistance of aging is poor.
Summary of the invention
The object of the invention is to, for above-mentioned current polyurethane sealant poor adhesive force; Resistant to liquid medium, oil-proofness are not good; Weather resisteant is poor, the problem that resistance of aging is poor, proposes a kind of petroleum pipe line end socket polyaspartic ester type seal gum, while oil resistant, resistant to liquid medium, weathering resistance and ageing resistance are superior, reach unanimity with the mechanical property of pipeline corrosion protection polyureas, sticking power is excellent.
For achieving the above object, the technical solution used in the present invention is: a kind of petroleum pipe line end socket polyaspartic ester type seal gum, comprises each component that weight proportion is following:
Component A:
Aliphatic isocyanates 20-70 part, is preferably 45-70 part; Polyether glycol 20-65 part, is preferably 30-55 part;
B component:
Poly-aspartic-acid resin 30-70 part, is preferably 45-70 part; Steric hindrance ammonia chainextender 30-44 part, is preferably 25-40 part; Filler 5-50 part, is preferably 25-40 part; Auxiliary agent 2-4 part, is preferably 2-3 part; Pigment 1-3 part, is preferably 1-2 part; Softening agent 4-10 part, is preferably 5-10 part;
The mass ratio of described component A and B component is 1:1 ~ 1.3:1, and preferred mass ratio is 1:1.
Steric hindrance ammonia chainextender of the present invention refers to the compound containing multiple secondary amino group.
Further, described aliphatic isocyanates is one or more in HMDI (HMDI), hexamethylene diisocyanate trimer, isophorone diisocyanate (IPDI), phenylenedimethylidyne isocyanic ester (XDI) and cyclohexanedimethyleterephthalate vulcabond (H6XDI).
Further, described polyether glycol is polyoxytrimethylene ethoxylated polyhydric alcohol and/or polytetrahydrofuran polyol.Preferred described polyether glycol be polyoxytrimethylene ether glycol, polyoxytrimethylene ether trivalent alcohol and molecular weight that molecular weight is respectively 1000,2000,3000 be respectively in the polytetrahydrofuran diol of 650,1000,2000 one or more.
Further, described polyaspartic ester is one or more in Desmophen NH 1420, Desmophen NH1520 and Desmophen NH 1220.
Further, described steric hindrance ammonia chainextender is 4,4'-diamino-3,3'-dichloro diphenyl methane (MOCA), steric hindrance ammonia Unilink 4200 (4,4 '-bis-Zhong Ding aminodiphenylmethane), Unilink 4100 (4,4 '-bis-Zhong Ding amino-benzene), Clearlink 1000 (4,4 '-bis-Zhong Ding amino bicyclic hexyl methane), Clearlink3000 (3,3 '-dimethyl-4,4 '-bis-Zhong Ding amino bicyclic hexyl methane), one or more in Jefflink555 and Jefflink754.
Further, described filler is one or more in fine particle calcium carbonate, coarse whiting, talcum powder, calcium hydroxide, zinc phosphate and mica powder, and described filler order number is more than 800 orders.
Further, described auxiliary agent is one or more in oxidation inhibitor, photostabilizer and defoamer.Described oxidation inhibitor is: one or more in oxidation inhibitor-264, antioxidant 1010 and antioxidant 1076, and consumption accounts for 5/1000ths of the total system of manual polyureas.Described photostabilizer be in UV-9, UV-24, UV-49, UV-531 and UV-328 one or more, consumption accounts for 5/1000ths of the total system of manual polyureas.Described defoamer is one or more in BYK-066N, BYK-054 and BYK-5500, and consumption accounts for 5/1000ths of the total system of manual polyureas.
Further, described pigment is one or more in titanium dioxide, iron oxide red, molybdenum red, indigo-blue indigo plant and carbon black.
Further, described softening agent is one or more in dioctyl phthalate (DOP), dibutyl phthalate and Di Iso Decyl Phthalate.When solid packing in system and auxiliary agent more time, system viscosity can raise, and suitably adds softening agent and can realize following advantage: the viscosity 1. reducing melt; 2. the snappiness of superpolymer is increased; 3. the elongation at break of superpolymer is increased; 4. the forming process temperature of superpolymer is reduced; 5. the forming process characteristic of superpolymer is improved; 6. the impact property of superpolymer is improved; 7. the low temperature flexibility of superpolymer is improved; 8. the surface hardness of superpolymer is reduced.
Another object of the present invention additionally provides a kind of preparation method of petroleum pipe line end socket polyaspartic ester type seal gum, comprises the following steps:
The preparation of component A: by polyether glycol as in container, (stirring makes it to be heated evenly, and is conducive to removing of moisture to open stirring; When polyether glycol is multiple, stirring can also make multiple polyether glycol mix), be heated to 110 ~ 120 DEG C, vacuum hydro-extraction is removed raw water and is reached less than 3/10000ths to water ratio, and being cooled to liquid material temperature is 20-30 DEG C, is preferably 25 DEG C.Joined by isocyanate ester compound in container, stirring at normal temperature reaction, after 1-2 hour, is preferably after 1 hour, is slowly warming up to 80 ~ 90 DEG C, after detection NCO% value reaches design load 98-102%, and cooling discharge.
Vacuum of the present invention adopts vacuum pump to realize, and vacuum tightness is-0.1 ~-0.08MPa; Described slow intensification is in the time of 0.5 hour-1 hour, rises to 80-90 DEG C by room temperature.Along with the rising of temperature, easily there is implode in reaction aggravation, therefore need slowly to heat up, and speed of response is little by little accelerated; Usually keeping reacting 2h, NCO% value after being warming up to 80 ~ 90 DEG C can be qualified.NCO% design load of the present invention calculates theoretical NCO value by formulating of recipe.
After adding aromatic isocyanate after first normal-temperature reaction for some time, again normal-temperature reaction be because: after aromatic isocyanate adds, at once will with steric hindrance ammonia, polyether glycol exothermic heat of reaction, and heat release is obvious, easily there is implode to the words of heat if extraneous, cause the failure of an experiment, therefore stir 1-2 hour under needing normal temperature, again by heating unit temperature reaction after initial reaction heat release terminates.
The preparation of B component: polyaspartic ester, steric hindrance ammonia chainextender and softening agent are placed in container and mix; Filler and pigment are joined in container and mix, mixing time is 20-60min, is preferably 30min; Then add auxiliary agent mixing (auxiliary agent is volatile, adds in the later stage, can reduce its volatile quantity), mixing time is 20-60min, be preferably 30min, to product, moisture and outward appearance detects, and water ratio reaches less than 5/10000ths, and outward appearance is without layering, without loose colour, qualified discharging.
Petroleum pipe line end socket polyaspartic ester type sealant formula science of the present invention, rationally, preparation method is simple, easy, has the following advantages compared with prior art:
(1), inventive gel for up to 20-120 minutes, and then extends operable time, and application property is strong.The longer operating time can make form of construction work simple and convenient, can realize manual blade coating, brushing and cast.Can construct in narrow, complicated operating mode, especially in node, flex point or the construction of cap place.The construction of the present invention's manual material is simple, successful, and the sealing for cap can reduce use cost, improves the working efficiency of complex working condition.
(2), component A of the present invention replaces the aromatic isocyanate of prior art with aliphatic isocyanates, improves the oil-proofness of material, resistance to medium, color inhibition and ageing-resistant performance.Petroleum pipe line end socket polyaspartic ester type seal gum of the present invention can oil pipeline end socket place and polyurea materials with the use of.
(3) resin, in existing polyurethane sealant B component often based on polyether glycol, micromolecular hydroxyl compound, with component A curing cross-linked under catalyst action.Catalyzer can accelerate solidification, again can accelerated material aging.And existing polyurethane sealant is only containing amino-formate bond, mechanical property is general.The present invention replaces polyether glycol with polyaspartic ester resin, jointly synthesizes B component, thus in seal gum, introduce a large amount of urea key with steric hindrance ammonia chainextender, and curing reaction, without the need to catalyzer, increases the mechanics effect of material, improves the sticking power with base material.When without primary coat, the sticking power >=9MPa on steel substrate, considerably beyond existing polyurethane type seal gum.The introducing of a large amount of urea key also makes the performance of seal gum and pipeline corrosion protection polyureas reach unanimity, tensile strength >=20MPa, elongation at break >=10%, and tear strength >=70N/mm, facilitates the consistency of polyureas and seal gum.
(4), petroleum pipe line end socket polyaspartic ester type seal gum of the present invention does not contain solvent, VOC free discharge, Environmental Safety.
(5), preparation method of the present invention is simple, easy, can realize petroleum pipe line end socket polyaspartic ester type seal gum suitability for industrialized production.
Embodiment
Below in conjunction with embodiment, the present invention is further described:
Embodiment 1:
Present embodiment discloses a kind of petroleum pipe line end socket polyaspartic ester type seal gum, comprise each component that weight proportion is following:
Component A:
Hexamethylene diisocyanate trimer HDI 65.7 parts;
Polytetrahydrofuran ethoxylated polyhydric alcohol PTMG-1000 34.3 parts;
B component:
Sealing glue is prepared from by following steps:
The preparation of component A: the polytetrahydrofuran ethoxylated polyhydric alcohol PTMG-1000 of 34.3g is joined in container, by liquid material stirring at low speed after 5 minutes, be heated to 110 ~ 120 DEG C, open vacuum pump, vacuum tightness is-0.1 ~-0.08MPa, vacuum hydro-extraction 2h, removes a small amount of water contained in raw material, detect water ratio and reach less than 3/10000ths, being cooled to liquid material temperature is about 25 DEG C.Join in container by the hexamethylene diisocyanate HDI tripolymer of 65.7g, stirring at normal temperature reacts 1 hour, and question response heat release terminates slowly to be warming up to 80 ~ 90 DEG C afterwards, keeps reaction 2h, sampling, detect NCO% value qualified after, cooling discharge.
The preparation of B component: first by the polyaspartic ester Desmophen NH 1420 of 60g, 4.5g dioctyl phthalate (DOP) adds in mixing tank, after stirring at low speed operates 5 minutes, 31g 800 order fine particle calcium carbonate and 2g carbon black to be added in mixing tank and high speed dispersion 30 minutes, by 1g UV-49, 1g oxidation inhibitor-264, 0.5g defoamer BYK-066N to add in mixing tank high speed dispersion 30 minutes again, the object of such mixing is for better B component being uniformly dispersed, to product, moisture and outward appearance detects, water ratio reaches less than 5/10000ths, and outward appearance is without layering, without loose colour, qualified discharging.
Manual application is got final product after being uniformly mixed by component A and B component mass ratio 1:1 during use.
To the petroleum pipe line end socket polyaspartic ester type seal gum of above-mentioned preparation at 25 DEG C, under humidity 65% environment, carry out Mechanics Performance Testing, detected result is as shown in table 1.
The mechanical experimental results of table 1 embodiment 1 seal gum
Petroleum pipe line end socket polyaspartic ester type seal gum prepared by visible the present embodiment has excellent oil-proofness and resistant to liquid dielectric behavior, good sealing effect; Reach unanimity with the polyureas performance on pipeline, com-patibilising effect is good; Also there is longer gel time 30min, manual blade coating can be realized.
Embodiment 2:
Present embodiment discloses a kind of petroleum pipe line end socket polyaspartic ester type seal gum, comprise each component that weight proportion is following:
Component A:
HMDI HMDI 50.4 parts;
Polyoxytrimethylene ethoxylated polyhydric alcohol PPG-1000 49.6 parts;
B component:
Sealing glue is prepared from by following steps:
The preparation of component A: the polyoxytrimethylene ethoxylated polyhydric alcohol PPG-1000 of 49.6g is joined in container, by liquid material stirring at low speed after 5 minutes, be heated to 110 ~ 120 DEG C, open vacuum pump, vacuum tightness is-0.1 ~-0.08MPa, vacuum hydro-extraction 2h, removes a small amount of water contained in raw material, detect water ratio and reach less than 3/10000ths, being cooled to liquid material temperature is about 25 DEG C.Join in container by the HMDI HMDI of 50.4g, stirring at normal temperature reacts 1 hour, and question response heat release terminates slowly to be warming up to 80 ~ 90 DEG C afterwards, keeps reaction 2h, sampling, detect NCO% value qualified after, cooling discharge.
The preparation of B component: first the Desmophen NH 1420 of 33g, the Desmophen NH1520 of 34.6g are added in mixing tank, after stirring at low speed operates 5 minutes, 27.9g800 order talcum powder and 2g carbon black to be added in mixing tank and high speed dispersion 30 minutes, by 1g UV-49,1g oxidation inhibitor-264,0.5g defoamer BYK-066N to add in mixing tank high speed dispersion 30 minutes again, the object of such mixing is for better B component being uniformly dispersed, to product, moisture and outward appearance detects, water ratio reaches less than 5/10000ths, qualified discharging.
Manual application is got final product after being uniformly mixed by component A and B component mass ratio 1:1 during use.
To the petroleum pipe line end socket polyaspartic ester type seal gum of above-mentioned preparation at 25 DEG C, under humidity 65% environment, carry out Mechanics Performance Testing by the experimental technique GB/T 16777-2008 of architectural waterproof material, detected result is as shown in table 2.
The mechanical experimental results of table 2 embodiment 2 seal gum
Petroleum pipe line end socket polyaspartic ester type seal gum prepared by visible the present embodiment has excellent oil-proofness and resistant to liquid dielectric behavior, good sealing effect; Reach unanimity with the polyureas performance on pipeline, com-patibilising effect is good; Also there is longer gel time 45min, manual blade coating can be realized.
Embodiment 3:
Present embodiment discloses a kind of petroleum pipe line end socket polyaspartic ester type seal gum, comprise each component that weight proportion is following:
Component A:
Hexamethylene diisocyanate HDI tripolymer 69.3 parts;
Polyoxytrimethylene ethoxylated polyhydric alcohol PPG-1000 30.7 parts;
B component:
Sealing glue is prepared from by following steps:
The preparation of component A: the polyoxytrimethylene ethoxylated polyhydric alcohol PPG-1000 of 30.7g is joined in container, by liquid material stirring at low speed after 5 minutes, be heated to 110 ~ 120 DEG C, open vacuum pump, vacuum tightness is-0.1 ~-0.08MPa, vacuum hydro-extraction 2h, removes a small amount of water contained in raw material, detect water ratio and reach less than 3/10000ths, being cooled to liquid material temperature is about 25 DEG C.Join in container by the hexamethylene diisocyanate HDI tripolymer of 69.3g, stirring at normal temperature reacts 1 hour, and question response heat release terminates slowly to be warming up to 80 ~ 90 DEG C afterwards, keeps reaction 2h, sampling, detect NCO% value qualified after, cooling discharge.
The preparation of B component: first by the Desmophen NH 1420 of 45.3g, the Unilink 4200 of 8.5g adds in mixing tank, after stirring at low speed operates 5 minutes, the light talcum powder of 31.7g 800 order and 2g iron oxide red to be added in mixing tank and high speed dispersion 30 minutes, by 1g UV-49, 1g oxidation inhibitor-264, 0.5g defoamer BYK-066N to add in mixing tank high speed dispersion 30 minutes again, the object of such mixing is for better B component being uniformly dispersed, to product, moisture and outward appearance detects, water ratio reaches less than 5/10000ths, and outward appearance is without layering, without loose colour, qualified discharging.Two components in mass ratio 1:1 are uniformly mixed and are mixed to get polyaspartic ester type seal gum of the present invention.
After testing, the petroleum pipe line end socket polyaspartic ester type seal gum that prepared by the present embodiment has excellent oil-proofness and resistant to liquid dielectric behavior, good sealing effect; Reach unanimity with the polyureas performance on pipeline, com-patibilising effect is good; Also there is longer gel time 1h, manual blade coating can be realized.
The present invention is not limited to petroleum pipe line end socket polyaspartic ester type seal gum described in above-described embodiment and preparation method thereof, and the wherein change of each composition weight proportioning, the change of preparation condition is all within protection scope of the present invention.
Last it is noted that above each embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to foregoing embodiments to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (7)
1. a petroleum pipe line end socket polyaspartic ester type seal gum, is characterized in that, comprises each component that weight proportion is following:
Component A:
Aliphatic isocyanates 20-70 part;
Polyether glycol 20-65 part;
B component:
The mass ratio of described component A and B component is 1:1 ~ 1.3:1;
Described aliphatic isocyanates is one or more in HMDI, hexamethylene diisocyanate trimer, isophorone diisocyanate, phenylenedimethylidyne isocyanic ester and cyclohexanedimethyleterephthalate vulcabond;
Described softening agent is one or more in dioctyl phthalate (DOP), dibutyl phthalate and Di Iso Decyl Phthalate;
Described auxiliary agent is one or more in oxidation inhibitor, photostabilizer and defoamer; Described oxidation inhibitor is: one or more in oxidation inhibitor-264, antioxidant 1010 and antioxidant 1076; Described photostabilizer be in UV-9, UV-24, UV-49, UV-531 and UV-328 one or more; Described defoamer is one or more in BYK-066N, BYK-054 and BYK-5500.
2. petroleum pipe line end socket polyaspartic ester type seal gum according to claim 1, it is characterized in that, described polyether glycol is polyoxytrimethylene ethoxylated polyhydric alcohol and/or polytetrahydrofuran polyol.
3. petroleum pipe line end socket polyaspartic ester type seal gum according to claim 1, is characterized in that, described polyaspartic ester is one or more in Desmophen NH 1420, Desmophen NH 1520 and Desmophen NH 1220.
4. petroleum pipe line end socket polyaspartic ester type seal gum according to claim 1, it is characterized in that, described steric hindrance ammonia chainextender is 4, one or more in 4'-diamino-3,3'-dichloro diphenyl methane, Unilink 4200, Unilink 4100, Clearlink 1000, Clearlink 3000, Jefflink555 and Jefflink754.
5. petroleum pipe line end socket polyaspartic ester type seal gum according to claim 1, it is characterized in that, described filler is one or more in fine particle calcium carbonate, coarse whiting, talcum powder, calcium hydroxide, zinc phosphate and mica powder, and described filler order number is more than 800 orders.
6. petroleum pipe line end socket polyaspartic ester type seal gum according to claim 1, is characterized in that, described pigment is one or more in titanium dioxide, iron oxide red, molybdenum red, indigo-blue indigo plant and carbon black.
7. a petroleum pipe line end socket preparation method for polyaspartic ester type seal gum described in claim 1-6 any one, comprises the following steps:
The preparation of component A: by polyether glycol as in container, is heated to 110 ~ 120 DEG C, and vacuum hydro-extraction is removed raw water and reached less than 3/10000ths to water ratio, and being cooled to liquid material temperature is 20-30 DEG C; Joined by isocyanate ester compound in container, stirring at normal temperature reaction, after 1-2 hour, is slowly warming up to 80 ~ 90 DEG C, after detection NCO% value reaches design load 98-102%, and cooling discharge;
The preparation of B component: polyaspartic ester, steric hindrance ammonia chainextender and softening agent are placed in container and mix; Filler and pigment are joined in container and mix, mixing time is 20-60min; Then add auxiliary agent mixing, mixing time is 20-60min, and to product, moisture and outward appearance detects, and water ratio reaches less than 5/10000ths, and outward appearance is without layering, without loose colour, and qualified discharging.
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| CN115651598B (en) * | 2022-12-15 | 2023-03-31 | 山东一诺威聚氨酯股份有限公司 | Bi-component polyurethane structural adhesive with excellent high-temperature shear strength and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5164473A (en) * | 1990-01-16 | 1992-11-17 | Miles Inc. | Two-component polyurethane adhesive |
| CN102675583A (en) * | 2011-03-08 | 2012-09-19 | 北京市大禹王防水工程集团有限公司 | Bi-component slow-reaction polyurea and preparation method thereof |
-
2014
- 2014-03-04 CN CN201410076892.3A patent/CN103788913B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5164473A (en) * | 1990-01-16 | 1992-11-17 | Miles Inc. | Two-component polyurethane adhesive |
| CN102675583A (en) * | 2011-03-08 | 2012-09-19 | 北京市大禹王防水工程集团有限公司 | Bi-component slow-reaction polyurea and preparation method thereof |
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