CN102585164A - Preparation method of special high-elasticity high-impregnation room temperature curing two-component interpentration polyurethane patching material for ballastless track boss resin patching - Google Patents
Preparation method of special high-elasticity high-impregnation room temperature curing two-component interpentration polyurethane patching material for ballastless track boss resin patching Download PDFInfo
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- CN102585164A CN102585164A CN2012100235281A CN201210023528A CN102585164A CN 102585164 A CN102585164 A CN 102585164A CN 2012100235281 A CN2012100235281 A CN 2012100235281A CN 201210023528 A CN201210023528 A CN 201210023528A CN 102585164 A CN102585164 A CN 102585164A
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Abstract
The invention discloses a preparation method of special high-elasticity high-impregnation room temperature curing two-component interpentration polyurethane patching material for ballastless track boss resin patching, which comprises the following three steps: preparing a modified interpentration polyether elastomer, synthesizing linear block MDI (diphenylmethane diisocyanate) prepolymer and curing two-component interpentration polyurethane. The patching material prepared using the method disclosed by the invention has the characteristics of proper viscosity, good permeability with boss resin, good compatibility, completely controllable curing time and strong interface adhesiveness, and has wide application prospects.
Description
Technical field
The invention belongs to building material technical field; Be specifically related to a kind of non-fragment orbit boss resin and repair special-purpose high-elastic high preparation method of soaking into the two component IPN urethane patching materials of self-vulcanizing, the urethane healant of preparation can be widely used in the repairing of ballastless track of high-speed railway CRTS I boss resin hurt.
Background technology
High speed railway construction is a complicated system engineering; The constructed influence of multiple effects such as bad, train travelling load, sleet erosion, envrionment temperature, non-fragment orbit inevitably produces as concrete interface breakage, CA mortar receive diseases such as water erosion deterioration, gap and crack.The damage of non-fragment orbit filling bed will have a strong impact on the normal use of track, if untimely the repairing, under the effect of various deterioration factors, crack and gap be expansion and aggravation constantly, with bringing very big potential safety hazard and financial loss.
Patching material commonly used mainly contains inorganic patching material, organic/inorganic composite material and organic polymer patching material.The polymkeric substance patching material has solved the problem that inorganic patching material cohesive strength is low, shrinking percentage is big, improved and basal plane between cohesive strength and snappiness, be a kind of patching material of excellent combination property.
Polymkeric substance patching material commonly used comprises acrylic resin, epoxy resin and urethane resin.The esters of acrylic acid patching material is lower in viscosity, and impervious and erosion resistance aspect has outstanding advantage, solidifies the low and mobile difference problem of intensity in early stage but exist; Use acrylic ester emulsion to improve repairing aluminosulfate cement mortar among patent CN201110117338.1 and the CN201010146754.X and prepare rapid-patching motar, its 2h, 1d ultimate compression strength and viscosity intensity are merely lower, and is mobile relatively poor;
Epoxy resin is done as filling bed main body patching material; Have back resistance to compression, tensile strength is higher, shrinking percentage is little and cohesive strength the is higher characteristics of solidifying; There is the higher shortcoming of the slower and required solidification value of curing reaction speed in the disclosed epoxy resin of patent CN02132751.3 and CN03113923.X, can't satisfy the railway operation circuit and realize in the time that in the skylight normal temperature repairs the construction requirement at damaged position fast.
Dual-component polyurethane resin patching material has that cost is low, elastic properties of materials good, free of contamination characteristics, fills filleting at high-speed railway and non-fragment orbit and obtains Preliminary Applications with the crack repairing.Domestic existing unit carries out correlation technique research; Development and patent CN200510041693 resin filling materials that is used for high-speed railway of the environment-friendly polyurethane elastomerics of producing like Zibo one promise urethane limited-liability company, the CRTS II template formula non-fragment orbit sliding layer adhesive for polyurethane that Huitian Glue Ind Co., Ltd., Hubei produces; Because the content shortcoming low, that kind is few of polyether glycol causes the material after two components solidify to have poor permeability in the material; Characteristics with the consistency difference of non-fragment orbit boss resin; Therefore develop a kind of viscosity suitable, with the structure repair material strong that boss resin penetration property is good, consistency is good with interface adhesion, be non-fragment orbit mortar boss resin repairing technique and key in application thereof.
Summary of the invention
The object of the invention aim to provide a kind of viscosity suitable, with boss resin penetration property is good, consistency the is good structure repair preparation methods strong with interface adhesion.
The present invention adopts following technical scheme to achieve these goals:
Find after deliberation; With four kinds of close modified polyethers of surface tension is that raw material has good penetration property through the modification IPN polyether elastomer of polycondensation preparation at the damaged position of boss resin; The particularly use of rigid-foam polyether polyol; Make that solidifying the back material has good prescription latitude, the good heat resistance that hard bubbles, the advantage that ultimate compression strength is big, dimensional stability is good adopt the flexible PU foam MDI of higher functionality, high resilience, room temperature catalyst dibutyl tin laurate to come cured modified polyether elastomer; Added the solidification process of polyurethane elastomer component, the curing operation time is controlled fully.
Non-fragment orbit boss resin is repaired special-purpose high-elastic high preparation method of soaking into the two component IPN urethane patching materials of self-vulcanizing; Comprise the preparation of modification IPN polyether elastomer, synthetic and three steps of two component IPN urethane cures of linearity block MDI performed polymer, it is characterized in that:
(1) preparation of modification IPN polyether elastomer: with 30-35 part molecular weight is that 1000 polyether glycol 1,5-10 part molecular weight are 2000 polyether glycols 2, are warming up to 80 ± 2 ℃ of reaction 1.8-2.2h; Adding 10-20 part molecular weight to above-mentioned system is that 3000 polyether glycols 3,10-20 part molecular weight are 1000 rigid-foam polyether polyols 4; After being warming up to 90 ± 2 ℃ of reaction 1.8-2.2h; Continue to be warming up to 120 ± 2 ℃; Take small molecules out of through feeding rare gas element, reaction 1.8-2.2h, cooling back discharging;
(2) linearity block MDI performed polymer is synthetic: with 5-10 part MDI join feed rare gas element in the dry reaction still after; Drip 70-79 part polyether glycol PPG, 3-5 part dibutyl tin laurate; In 88-92 ℃ of reaction 2-3h, add 150-200 part acetone diluted again, be cooled to 75-85 ℃; Add 5-10 part dimethylol propionic acid, when in the system-massfraction of NCO finishes reaction during to 20-25%;
(3) two component IPN urethane cures: get modified polyether elastomerics 200-250 part, MDI performed polymer 100-150 part, dibutyl tin laurate 0.5-2 part; Be filled into non-fragment orbit boss resin hurt position after mixing, treat to obtain after fast curing-formed the high-elastic high two component IPN urethane patching materials of self-vulcanizing that soak into.
Described non-fragment orbit boss resin is repaired special-purpose high-elastic high preparation method of soaking into the two component IPN urethane patching materials of self-vulcanizing; It is characterized in that: four kinds of polyethers in the preparation of described modification IPN polyether elastomer: the functionality of polyether glycol 1, polyether glycol 2, polyether glycol 3, polyether glycol 4 is respectively 2,2,3,3 polyether glycol, and wherein polyether glycol 4 is a kind of rigid-foam polyether.
Described non-fragment orbit boss resin is repaired special-purpose high-elastic high preparation method of soaking into the two component IPN urethane patching materials of self-vulcanizing; It is characterized in that: the MDI performed polymer is the diphenylmethanediisocyanate of flexible PU foam isocyanic ester in the preparation of described linearity block MDI performed polymer, wherein-and the content of NCO is controlled to be 20-25%.
Compared with present technology the present invention has following advantage and positive achievement:
(1) four kind of modified polyether that surface tension is close is that raw material has good penetration property through the modification IPN polyether elastomer of polycondensation preparation at the damaged position of boss resin; The particularly use of rigid-foam polyether polyol; Make that solidifying the back material has good prescription latitude, the good heat resistance that hard bubbles, the advantage that ultimate compression strength is big, dimensional stability is good.
(2) adopt the flexible PU foam MDI of higher functionality, high resilience, room temperature catalyst dibutyl tin laurate to come cured modified polyether elastomer, added the solidification process of polyurethane elastomer component, the curing operation time is controlled fully.
(3) it is controlled fully to solidify the gel time of repair sheets, can realize that material solidifies rapidly, and the material after the curing does not have foaming to be manifested, and guarantees that site operation can accomplish in the time of railway skylight, has significantly reduced financial loss.
Embodiment
Embodiment 1: non-fragment orbit boss resin is repaired special-purpose high-elastic high preparation method of soaking into the two component IPN urethane patching materials of self-vulcanizing, comprising:
(1) preparation of modification IPN polyether elastomer: with 33kg polyether glycol 1,6kg polyether glycol 2, be warming up to 80 ℃ the reaction 2h; Add 13kg polyether glycol 3,13kg rigid-foam polyether polyol 4 to above-mentioned system; After being warming up to 90 ℃ of reaction 2h, continue to be warming up to 120 ℃, take small molecules out of through feeding rare gas element; Reaction 2h, cooling back discharging;
(2) linearity block MDI performed polymer is synthetic: with 10kg MDI join feed rare gas element in the dry reaction still after; Drip 70kg polyether glycol PPG, 3kg dibutyl tin laurate; In 90 ℃ of reaction 3h, add the 150kg acetone diluted again, be cooled to 80 ℃; Add the 10kg dimethylol propionic acid, when in the system-massfraction of NCO finishes reaction when approaching theoretical value 25%;
(3) two component IPN urethane cures: get modified polyether elastomerics 50kg, MDI performed polymer 30kg, dibutyl tin laurate 0.4kg part; After hand-held whisking appliance mixes, be filled into non-fragment orbit boss resin hurt position, treat to obtain the high-elastic high two component IPN urethane patching materials of self-vulcanizing that soak into after fast curing-formed.
Embodiment 2: non-fragment orbit boss resin is repaired special-purpose high-elastic high preparation method of soaking into the two component IPN urethane patching materials of self-vulcanizing, comprising:
(1) preparation of modification IPN polyether elastomer: with 30kg polyether glycol 1,6kg polyether glycol 2, be warming up to 80 ℃ the reaction 2h; Add 15kg polyether glycol 3,15kg rigid-foam polyether polyol 4 to above-mentioned system; After being warming up to 90 ℃ of reaction 2h, continue to be warming up to 120 ℃, take small molecules out of through feeding rare gas element; Reaction 2h, cooling back discharging;
(2) linearity block MDI performed polymer is synthetic: with 10kg MDI join feed rare gas element in the dry reaction still after; Drip 70kg polyether glycol PPG, 3kg dibutyl tin laurate; In 90 ℃ of reaction 3h, add the 175kg acetone diluted again, be cooled to 80 ℃; Add the 10kg dimethylol propionic acid, when in the system-massfraction of NCO finishes reaction when approaching theoretical value 25%;
(3) two component IPN urethane cures: get modified polyether elastomerics 50kg, MDI performed polymer 30kg, dibutyl tin laurate 0.3kg part; After hand-held whisking appliance mixes, be filled into non-fragment orbit boss resin hurt position, treat to obtain the high-elastic high two component IPN urethane patching materials of self-vulcanizing that soak into after fast curing-formed.
Embodiment 3: non-fragment orbit boss resin is repaired special-purpose high-elastic high preparation method of soaking into the two component IPN urethane patching materials of self-vulcanizing, comprises
(1) preparation of modification IPN polyether elastomer: with 30kg polyether glycol 1,6kg polyether glycol 2, be warming up to 80 ℃ the reaction 2h; Add 15kg polyether glycol 3,15kg rigid-foam polyether polyol 4 to above-mentioned system; After being warming up to 90 ℃ of reaction 2h, continue to be warming up to 120 ℃, take small molecules out of through feeding rare gas element; Reaction 2h, cooling back discharging;
(2) linearity block MDI performed polymer is synthetic: with 10kg MDI join feed rare gas element in the dry reaction still after; Drip 70kg polyether glycol PPG, 3kg dibutyl tin laurate; In 90 ℃ of reaction 3h, add the 200kg acetone diluted again, be cooled to 80 ℃; Add the 10kg dimethylol propionic acid, when in the system-massfraction of NCO finishes reaction when approaching theoretical value 25%;
(3) two component IPN urethane cures: get modified polyether elastomerics 50kg, MDI performed polymer 30kg, dibutyl tin laurate 0.2kg part; After hand-held whisking appliance mixes, be filled into non-fragment orbit boss resin hurt position, treat to obtain the high-elastic high two component IPN urethane patching materials of self-vulcanizing that soak into after fast curing-formed.
The comparative example 1: a kind of non-fragment orbit boss resin is repaired special-purpose high-elastic high preparation method of soaking into the two component IPN urethane patching materials of self-vulcanizing, comprising:
(1) preparation of modification IPN polyether elastomer: with 30-35 part molecular weight is that 1000 polyether glycol 1,5-10 part molecular weight are 2000 polyether glycols 2, are warming up to 80 ± 2 ℃ of reaction 2h; Adding 10-20 part molecular weight to above-mentioned system is that 3000 polyether glycols 3,10-20 part molecular weight are 1000 rigid-foam polyether polyols 4; After being warming up to 90 ± 2 ℃ of reaction 2h, continue to be warming up to 120 ± 2 ℃, take small molecules out of through feeding rare gas element; Reaction 2h, cooling back discharging;
(2) linearity block MDI performed polymer is synthetic: with 5-10 part MDI join feed rare gas element in the dry reaction still after; Drip 70-79 part polyether glycol PPG, 3-5 part dibutyl tin laurate; In 88-92 ℃ of reaction 2-3h, add 150-200 part acetone diluted again, be cooled to 80 ℃; Add 5-10 part dimethylol propionic acid, when in the system-massfraction of NCO finishes reaction when approaching theoretical value 20-25%;
(3) two component IPN urethane cures: get modified polyether elastomerics 200-250 part, MDI performed polymer 100-150 part; After hand-held whisking appliance mixes, be filled into non-fragment orbit boss resin hurt position, treat to obtain the high-elastic high two component IPN urethane patching materials of self-vulcanizing that soak into after fast curing-formed.
The comparative example 2: a kind of non-fragment orbit boss resin is repaired special-purpose high-elastic high preparation method of soaking into the two component IPN urethane patching materials of self-vulcanizing, comprising:
(1) preparation of modification IPN polyether elastomer: with 33kg polyether glycol 1,6kg polyether glycol 2, be warming up to 80 ℃ the reaction 2h; After above-mentioned system adding 13kg polyether glycol 3 is warming up to 90 ℃ of reaction 2h; Continue to be warming up to 120 ℃; Take small molecules out of through feeding rare gas element, reaction 2h, cooling back discharging;
(2) linearity block MDI performed polymer is synthetic: with 10kg MDI join feed rare gas element in the dry reaction still after; Drip 70kg polyether glycol PPG, 3kg dibutyl tin laurate; In 90 ℃ of reaction 3h, add the 150kg acetone diluted again, be cooled to 80 ℃; Add the 10kg dimethylol propionic acid, when in the system-massfraction of NCO finishes reaction when approaching theoretical value 25%;
(3) two component IPN urethane cures: get modified polyether elastomerics 50kg, MDI performed polymer 30kg, dibutyl tin laurate 0.4kg part; After hand-held whisking appliance mixes, be filled into non-fragment orbit boss resin hurt position, treat to obtain the high-elastic high two component IPN urethane patching materials of self-vulcanizing that soak into after fast curing-formed.
Application example 1:
The high-elastic high two component IPN urethane patching materials of self-vulcanizing that soak into behind the above-mentioned curing molding are tested about " ballastless track of high-speed railway maintenance management method " CRTS I template formula non-fragment orbit boss resin hurt method for repairing and mending according to institute of iron section, and detected result is following:
Can know that by above-mentioned experimental result the adding of rigid-foam polyether polyol 4 has improved the viscosity of material and shortened gel time, helps improving the mechanical strength and the volume stability of IPN polyether elastomer.Added the catalyzer dibutyl tin laurate in the solidification process, helped improving shearing resistance, the cohesive strength of material, shortened the gel time of material, made solidification process controlled fully.
Claims (3)
1. a non-fragment orbit boss resin is repaired special-purpose high-elastic high preparation method of soaking into the two component IPN urethane patching materials of self-vulcanizing; Comprise the preparation of modification IPN polyether elastomer, synthetic and three steps of two component IPN urethane cures of linearity block MDI performed polymer, it is characterized in that:
(1) preparation of modification IPN polyether elastomer: with 30-35 part molecular weight is that about 1000 polyether glycol 1,5-10 part molecular weight are 2000 left and right sides polyether glycols 2, are warming up to 80 ± 2 ℃ of reaction 1.8-2.2h; Adding 10-20 part molecular weight to above-mentioned system is that 3000 left and right sides polyether glycols 3,10-20 part molecular weight are 1000 left and right sides rigid-foam polyether polyols 4; After being warming up to 90 ± 2 ℃ of reaction 1.8-2.2h; Continue to be warming up to 120 ± 2 ℃; Take small molecules out of through feeding rare gas element, reaction 1.8-2.2h, cooling back discharging;
(2) linearity block MDI performed polymer is synthetic: with 5-10 part MDI join feed rare gas element in the dry reaction still after; Drip 70-79 part polyether glycol PPG, 3-5 part dibutyl tin laurate; In 88-92 ℃ of reaction 2-3 h, add 150-200 part acetone diluted again, be cooled to 75-85 ℃; Add 5-10 part dimethylol propionic acid, when in the system-massfraction of NCO finishes reaction during to 20-25%;
(3) two component IPN urethane cures: get modified polyether elastomerics 200-250 part, MDI performed polymer 100-150 part, dibutyl tin laurate 0.5-2 part; Be filled into non-fragment orbit boss resin hurt position after mixing, treat to obtain after fast curing-formed the high-elastic high two component IPN urethane patching materials of self-vulcanizing that soak into.
2. non-fragment orbit boss resin according to claim 1 is repaired special-purpose high-elastic high preparation method of soaking into the two component IPN urethane patching materials of self-vulcanizing; It is characterized in that: four kinds of polyethers in the preparation of described modification IPN polyether elastomer: the functionality of polyether glycol 1, polyether glycol 2, polyether glycol 3, polyether glycol 4 is respectively 2,2,3,3 polyether glycol, and wherein polyether glycol 4 is a kind of rigid-foam polyether.
3. non-fragment orbit boss resin according to claim 1 is repaired special-purpose high-elastic high preparation method of soaking into the two component IPN urethane patching materials of self-vulcanizing; It is characterized in that: the MDI performed polymer is the diphenylmethanediisocyanate of flexible PU foam isocyanic ester in the preparation of described linearity block MDI performed polymer, wherein-and the content of NCO is controlled to be 20-25%.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103938500A (en) * | 2013-05-28 | 2014-07-23 | 上海铁路局科学技术研究所 | Backing plate used for supporting ballastless track plate and application method thereof |
| CN106632973A (en) * | 2015-11-05 | 2017-05-10 | 湖北航天化学技术研究所 | Normal-temperature cured polyurethane resin composition and preparation method thereof |
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| JP2002167421A (en) * | 2000-11-30 | 2002-06-11 | Aren:Kk | Method for preparing urethane resin filter for slab track |
| CN1664008A (en) * | 2005-02-06 | 2005-09-07 | 西北工业大学 | Resin filling materials for high speed railway |
| CN101613453A (en) * | 2009-07-23 | 2009-12-30 | 中国铁道科学研究院金属及化学研究所 | The resin combination that is used for the filling unit plate type ballastless track convex baffling platform |
| CN102219887A (en) * | 2011-05-23 | 2011-10-19 | 中国铁道科学研究院金属及化学研究所 | Ballast adhesive resin as well as preparation method and applications thereof |
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Patent Citations (4)
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| JP2002167421A (en) * | 2000-11-30 | 2002-06-11 | Aren:Kk | Method for preparing urethane resin filter for slab track |
| CN1664008A (en) * | 2005-02-06 | 2005-09-07 | 西北工业大学 | Resin filling materials for high speed railway |
| CN101613453A (en) * | 2009-07-23 | 2009-12-30 | 中国铁道科学研究院金属及化学研究所 | The resin combination that is used for the filling unit plate type ballastless track convex baffling platform |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103938500A (en) * | 2013-05-28 | 2014-07-23 | 上海铁路局科学技术研究所 | Backing plate used for supporting ballastless track plate and application method thereof |
| CN103938500B (en) * | 2013-05-28 | 2016-04-06 | 上海铁路局科学技术研究所 | A kind of for ballastless track boards supporting backing plate and application process thereof |
| CN106632973A (en) * | 2015-11-05 | 2017-05-10 | 湖北航天化学技术研究所 | Normal-temperature cured polyurethane resin composition and preparation method thereof |
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