CN104558479A - Spray polyurethane foam material for track board and construction method thereof - Google Patents
Spray polyurethane foam material for track board and construction method thereof Download PDFInfo
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- CN104558479A CN104558479A CN201510040059.8A CN201510040059A CN104558479A CN 104558479 A CN104558479 A CN 104558479A CN 201510040059 A CN201510040059 A CN 201510040059A CN 104558479 A CN104558479 A CN 104558479A
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- polyurethane
- foam material
- spray foam
- track plates
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- 0 C*ON*(*)N* Chemical compound C*ON*(*)N* 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
- C08G18/7657—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
- C08G18/7664—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/4009—Two or more macromolecular compounds not provided for in one single group of groups C08G18/42 - C08G18/64
- C08G18/4018—Mixtures of compounds of group C08G18/42 with compounds of group C08G18/48
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/75—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic
- C08G18/758—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing two or more cycloaliphatic rings
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/06—Pretreated ingredients and ingredients covered by the main groups C08K3/00 - C08K7/00
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/14—Glass
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
- C08K9/06—Ingredients treated with organic substances with silicon-containing compounds
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B19/00—Protection of permanent way against development of dust or against the effect of wind, sun, frost, or corrosion; Means to reduce development of noise
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
The invention relates to a spray polyurethane foam material for a track board and a construction method thereof, wherein a spray polyurethane component A consists of polyether polyol, polyester polyol, a foam stabilizer, a foaming agent, a catalyst, a flame retardant, an antioxidant and a modified titanium dioxide-glass fiber powder mixture; and a component B consists of an isocyanate mixture. The construction method comprises the following steps: pre-sealing a rail fastener (a); smearing a primer (c) on the track board (b); then spraying a 5-10mm polyurethane foam material (d); and finally smearing an aliphatic polyurethane coating (e) to accomplish construction. The spray polyurethane foam material provided by the invention is mainly applied to the track board of a high speed railway to fundamentally solve the temperature cracking problem of a concrete member. The material provided by the invention has a thermal insulation effect and excellent mechanical property, and the bonding strength with the track board can reach over 0.3MPa.
Description
Technical field
The present invention relates to a kind of polyurethane spray foam material, particularly relate to a kind of high-speed railway track plate polyurethane spray foam thermal insulation material; The invention still further relates to the constructional method of this kind of material.
Background technology
Non-fragment orbit replaces the ballast bed track structure of shot with rigid concrete railway roadbed, and it has satisfactory stability, ride comfort and weather resistance, and railway roadbed is neat and artistic, and large-scale application is in high speed passenger dedicated railway.But meanwhile, ballastless track boards cracking is also with the technical problem of certain ubiquity in high speed railway construction and operation, crack is once formation will cause larger harm, it can reduce the weather resistance of non-fragment orbit, reduce the insulating property of track, weaken the bearing capacity of track, also may cause disadvantageous effect to the use safety of non-fragment orbit simultaneously.
The origin cause of formation in track plates crack has multiple, and wherein the change of temperature is the one of the main reasons of concrete cracking.Because high performance concrete cement consumption is large, hydration heat is high, therefore concrete internal temperature will raise, concrete expansion; Due to component non-adiabatic condition, concrete outside temperature will reduce.When the tensile stress that concrete shrinkage produces exceedes concrete tensile strength, concrete will ftracture.
The track plates crack of causing because of temperature reason is also not yet effectively solved, at present, many employing later stage repairing techniques, patching material often adopts Thief zone organic resin, this patching material effectively can delay steel bar corrosion, the concrete carbonization that crack causes, but can not tackle the problem at its root.Therefore, solve temperature difference between inside and outside concrete that hydration heat of cement causes, solve " thermal cracking " that the concrete structure temperature difference caused because of variation of ambient temperature fundamentally could solve track plates.
Summary of the invention
The object of the invention is to:
1, provide a kind of heat-insulating material, be sprayed on track plates, the temperature difference produced during solving apparatus for concrete member curing, thus fundamentally solve concrete member thermal cracking problem;
2, spraying polyurethane material provided by the invention is except having adiabatic heat-insulation effect, after being strengthened, can also play structural re-enforcement by modified fibre, particle; The spraying polyurethane material simultaneously provided also has color inhibition, ageing-resistant feature;
3, a kind of constructional method of track plates spraying polyurethane is provided.
The object of the invention is to be achieved through the following technical solutions:
A kind of track plates polyurethane spray foam material, its component A is made up of 10 ~ 60% polyether glycols, 0 ~ 45% polyester polyol, 1 ~ 3% suds-stabilizing agent, 6 ~ 15% whipping agents, 1.5 ~ 4% catalyzer, 6 ~ 25% fire retardants, 1 ~ 3% antioxidant, 12 ~ 18% modifying titanium dioxides-glass powder mixture; B component is made up of isocyanate mixture.
The method of modifying of described modifying titanium dioxide-glass powder is by titanium dioxide: glass powder: properties-correcting agent=1: 0.25 ~ 0.5: 0.38 ~ 0.76 mixes, and to be scattered in etc. in the deionized water of quality, under 300 ~ 600r/min rotating speed, be warming up to 70 ~ 90 DEG C, high-speed stirring 30 ~ 60min, take out suction filtration, warm air drying, pulverize.
Described properties-correcting agent is self-control coupling agent: stearic acid (oxygen propyl trimethoxy silicane) hydroxyl isopropyl ester, and its structural formula is as follows:
Described isocyanate mixture is mixed according to 1: 9 ~ 3: 7 ratios with polyphenyl polymethylene polyisocyanates (PAPI) by dicyclohexyl methane diisocyanate (HMDI).
This kind of track plates constructional method of polyurethane spray foam material, comprises the following steps:
(1) before track plates does not install rail fastening, the wide plastic adhesive tape of fastener for installing place (a) is sealed, and in the upper brushing epoxy of track plates (b) or polyurethane primer (c), every square meter consumption 0.2 ~ 0.6kg;
(2) after base paint is done solid work, utilize polyurethane coating machine by component A: B component carries out mixing spraying according to the ratio of 1: 1 ~ 1: 1.6, A, B component temperature control between 22 ~ 27 DEG C, polyurethane spray foam layer (d) thickness 5 ~ 10mm;
(3) after 24h, brushing aliphatic polyurethane top coat (e), gauge control is at 0.1 ~ 0.3mm;
(4) plastic adhesive tape is removed, by polyurethane spray foam and the smoothing process in non-polyurethane spray foam fastener junction.
Advantage of the present invention is:
1, the solution fundamentally solving concrete member thermal cracking is provided;
2, while institute's invention material has adiabatic heat-insulation effect, its excellent in mechanical performance, can reach more than 0.3MPa with track plates cohesive strength;
3, constructional method is simple, easily operates, good endurance.
Accompanying drawing illustrates:
Accompanying drawing is the structure iron after construction described in a kind of polyurethane spray foam material of the present invention and constructional method thereof;
Number in the figure illustrates: a, rail fastening place; B, track plates; C, epoxy or polyurethane base coats; D, polyurethane spray foam layer; E, aliphatic polyurethane top coat layer
Embodiment
In conjunction with specific examples, the present invention is described further.
The present invention relates to a kind of polyurethane spray foam material, particularly relate to a kind of high-speed railway track plate polyurethane spray foam thermal insulation material; The invention still further relates to the constructional method of this kind of material.
A kind of track plates polyurethane spray foam material, its component A is made up of 20% polyether glycol, 39% polyester polyol, 2% suds-stabilizing agent, 10% whipping agent, 3.8% catalyzer, 15% fire retardant, 1.5% antioxidant, 15% modifying titanium dioxide-glass powder mixture; B component is made up of isocyanate mixture.
The method of modifying of described modifying titanium dioxide-glass powder is by titanium dioxide: glass powder: properties-correcting agent=1: mix at 0.3: 0.4, and to be scattered in etc. in the deionized water of quality, under 600r/min rotating speed, be warming up to 90 DEG C, high-speed stirring 40min, take out suction filtration, warm air drying, pulverizes.
Described properties-correcting agent is self-control coupling agent: stearic acid (oxygen propyl trimethoxy silicane) hydroxyl isopropyl ester, and its structural formula is as follows:
Described isocyanate mixture is mixed according to 3: 7 ratios with polyphenyl polymethylene polyisocyanates (PAPI) by dicyclohexyl methane diisocyanate (HMDI).
This kind of track plates constructional method of polyurethane spray foam material, comprises the following steps:
(1) before track plates does not install rail fastening, the wide plastic adhesive tape of fastener for installing place (a) is sealed, and in the upper brushing epoxy of track plates (b) or polyurethane primer (c), every square meter consumption 0.4kg;
(2) after base paint is done solid work, utilize polyurethane coating machine by component A: B component carries out mixing spraying according to the ratio of 1: 1.2, and A, B component temperature control between 25 DEG C, polyurethane spray foam layer (d) thickness 8mm;
(3) after 24h, brushing aliphatic polyurethane top coat (e), gauge control is at 0.1mm;
(4) plastic adhesive tape is removed, by polyurethane spray foam and the smoothing process in non-polyurethane spray foam fastener junction.
The present invention is mainly used in high-speed railway track plate, and fundamentally solve concrete member thermal cracking problem, while institute's invention material has adiabatic heat-insulation effect, its excellent in mechanical performance, can reach more than 0.3MPa with track plates cohesive strength; Present invention also offers the constructional method of this kind of material, this constructional method is simple, easily operates, good endurance.
Claims (5)
1. a track plates polyurethane spray foam material, is characterized in that spraying polyurethane component A is made up of 10 ~ 60% polyether glycols, 0 ~ 45% polyester polyol, 1 ~ 3% suds-stabilizing agent, 6 ~ 15% whipping agents, 1.5 ~ 4% catalyzer, 6 ~ 25% fire retardants, 1 ~ 3% antioxidant, 12 ~ 18% modifying titanium dioxides-glass powder mixture; B component is made up of isocyanate mixture.
2. a kind of track plates polyurethane spray foam material according to claim 1, the method of modifying that it is characterized in that described modifying titanium dioxide-glass powder is by titanium dioxide: glass powder: properties-correcting agent=1: 0.25 ~ 0.5: 0.38 ~ 0.76 mixes, and to be scattered in etc. in the deionized water of quality, under 300 ~ 600r/min rotating speed, be warming up to 70 ~ 90 DEG C, high-speed stirring 30 ~ 60min, take out suction filtration, warm air drying, pulverizes.
3. a kind of track plates polyurethane spray foam material according to claim 2, it is characterized in that described properties-correcting agent is self-control coupling agent: stearic acid (oxygen propyl trimethoxy silicane) hydroxyl isopropyl ester, its structural formula is as follows:
。
4. a kind of track plates polyurethane spray foam material according to claim 1, is characterized in that described isocyanate mixture is mixed according to 1: 9 ~ 3: 7 ratios with polyphenyl polymethylene polyisocyanates (PAPI) by dicyclohexyl methane diisocyanate (HMDI).
5. the constructional method of a kind of track plates polyurethane spray foam material prepared according to any one of Claims 1 to 4, is characterized in that, comprise the following steps:
(1) before track plates does not install rail fastening, the wide plastic adhesive tape of fastener for installing place (a) is sealed, and in the upper brushing epoxy of track plates (b) or polyurethane primer (c), every square meter consumption 0.2 ~ 0.6kg;
(2) after base paint is done solid work, utilize polyurethane coating machine by component A: B component carries out mixing spraying according to the ratio of 1: 1 ~ 1: 1.6, A, B component temperature control between 22 ~ 27 DEG C, polyurethane spray foam layer (d) thickness 5 ~ 10mm;
(3) after 24h, brushing aliphatic polyurethane top coat (e), gauge control is at 0.1 ~ 0.3mm;
(4) plastic adhesive tape is removed, by polyurethane spray foam and the smoothing process in non-polyurethane spray foam fastener junction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510040059.8A CN104558479A (en) | 2015-01-28 | 2015-01-28 | Spray polyurethane foam material for track board and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510040059.8A CN104558479A (en) | 2015-01-28 | 2015-01-28 | Spray polyurethane foam material for track board and construction method thereof |
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| Publication Number | Publication Date |
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| CN104558479A true CN104558479A (en) | 2015-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510040059.8A Pending CN104558479A (en) | 2015-01-28 | 2015-01-28 | Spray polyurethane foam material for track board and construction method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108437189A (en) * | 2018-04-11 | 2018-08-24 | 武汉理工大学 | A kind of former and technique of interface enhancing lightweight concrete |
| CN109518713A (en) * | 2018-11-09 | 2019-03-26 | 宿州典跃新型建筑材料有限公司 | A kind of construction method of vibration absorbing low noise shake table ground |
| CN111088727A (en) * | 2019-12-06 | 2020-05-01 | 武汉纺织大学 | High-weather-resistance and high-strength composite structure sleeper and preparation method thereof |
| CN113027117A (en) * | 2021-03-25 | 2021-06-25 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Heat preservation template for concrete molding and manufacturing method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103819651A (en) * | 2014-02-28 | 2014-05-28 | 北京东方雨虹防水技术股份有限公司 | Hard polyurethane foam material and preparation method thereof |
-
2015
- 2015-01-28 CN CN201510040059.8A patent/CN104558479A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103819651A (en) * | 2014-02-28 | 2014-05-28 | 北京东方雨虹防水技术股份有限公司 | Hard polyurethane foam material and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| XIN YU，ET AL.: "A NOVEL METHOD FOR PREPARATION AND CHARACTERIZATION OF RESTRICTED-ACCESS MEDIA-ALKYL-DIOL SILICA (ADS)", 《JOURNAL OF LIQUID CHROMATOGRAPHY & RELATED TECHNOLOGIES》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108437189A (en) * | 2018-04-11 | 2018-08-24 | 武汉理工大学 | A kind of former and technique of interface enhancing lightweight concrete |
| CN109518713A (en) * | 2018-11-09 | 2019-03-26 | 宿州典跃新型建筑材料有限公司 | A kind of construction method of vibration absorbing low noise shake table ground |
| CN111088727A (en) * | 2019-12-06 | 2020-05-01 | 武汉纺织大学 | High-weather-resistance and high-strength composite structure sleeper and preparation method thereof |
| CN111088727B (en) * | 2019-12-06 | 2021-10-01 | 武汉纺织大学 | High-weather-resistance and high-strength composite structure sleeper and preparation method thereof |
| CN113027117A (en) * | 2021-03-25 | 2021-06-25 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Heat preservation template for concrete molding and manufacturing method thereof |
| CN113027117B (en) * | 2021-03-25 | 2024-01-09 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Thermal insulation template for concrete molding and manufacturing method thereof |
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Application publication date: 20150429 |
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