CN110563909A - restrictive pouring modified polyurethane resin for guide rail of guide rail electric car and preparation method thereof - Google Patents
restrictive pouring modified polyurethane resin for guide rail of guide rail electric car and preparation method thereof Download PDFInfo
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- CN110563909A CN110563909A CN201910826519.8A CN201910826519A CN110563909A CN 110563909 A CN110563909 A CN 110563909A CN 201910826519 A CN201910826519 A CN 201910826519A CN 110563909 A CN110563909 A CN 110563909A
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- guide rail
- polyurethane resin
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- antioxidant
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- 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
- C08G18/08—Processes
-
- 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
- C08G18/08—Processes
- C08G18/0838—Manufacture of polymers in the presence of non-reactive compounds
- C08G18/0842—Manufacture of polymers in the presence of non-reactive compounds in the presence of liquid diluents
- C08G18/0847—Manufacture of polymers in the presence of non-reactive compounds in the presence of liquid diluents in the presence of solvents for the polymers
- C08G18/0852—Manufacture of polymers in the presence of non-reactive compounds in the presence of liquid diluents in the presence of solvents for the polymers the solvents being organic
-
- 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
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/10—Esters; Ether-esters
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/10—Esters; Ether-esters
- C08K5/11—Esters; Ether-esters of acyclic polycarboxylic acids
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/10—Esters; Ether-esters
- C08K5/12—Esters; Ether-esters of cyclic polycarboxylic acids
-
- 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
- C08K7/06—Elements
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
Abstract
the invention discloses a restrictive pouring modified polyurethane resin for a guide rail of a guide rail electric car, which is prepared from the following raw materials in parts by weight: 5-9 parts of plasticizer, 30-50 parts of polyisocyanate monomer, 20-35 parts of polyester polyol, 45-55 parts of organic diisocyanate, 4-8 parts of antioxidant, 60-80 parts of dimethylacetamide, 10-15 parts of carbon nanofiber and 4-6 parts of azo initiator. The invention also provides a preparation method of the restrictive pouring modified polyurethane resin for the guide rail of the tramcar, and by adopting the scheme, the restrictive pouring modified polyurethane resin has the advantages of simplicity and convenience in preparation, good wear resistance, long service life and the like, and has very high practical value and popularization value in the technical field of tramcar tracks.
Description
Technical Field
the invention relates to the technical field of tramcar tracks, in particular to a tramcar guide rail restrained pouring modified polyurethane resin and a preparation method thereof.
background
At present, the rail tramcar track in the prior art has more structural forms, such as Translohr rubber wheel guide rail type tracks, tracks with fasteners, tracks without fasteners, lawn tracks and the like, and can be divided into embedded tracks and non-embedded tracks according to the installation mode; the structure of the non-embedded track is similar to that of a common railway track, and the non-embedded track has independent road right and is convenient to operate, maintain and repair; the embedded track realizes the running mode that the modern tramcar shares the right of way with other transportation modes. In the prior art, the fastener embedded type track mainly comprises a track body, an elastic layer, a fastener, a rubber mat, concrete and a screenshot filling composite material, and the track trolley guide rail constraint layer of the track body is in an embedded state, so that the track trolley guide rail is inconvenient to maintain and is obviously not suitable for being made of common materials.
therefore, the restrictive pouring modified polyurethane resin for the guide rail of the guide rail electric car, which is pressure-resistant, wear-resistant and long in service life, is urgently needed to be provided.
disclosure of Invention
aiming at the problems, the invention aims to provide a restrictive pouring modified polyurethane resin for a guide rail of a guide rail electric car and a preparation method thereof, and the technical scheme adopted by the invention is as follows:
A restrictive pouring modified polyurethane resin for a guide rail of a guide rail electric car is prepared from the following raw materials in parts by weight:
Plasticizer: 5-9 parts of a solvent;
polyisocyanate monomers: 30-50 parts of a solvent;
Polyester polyol: 20-35 parts of a solvent;
organic diisocyanate: 45-55 parts of a solvent;
Antioxidant: 4-8 parts;
Dimethyl acetamide: 60-80 parts;
Nano carbon fiber: 10-15 parts;
azo initiators: 4-6 parts.
Preferably, the plasticizer is one of dioctyl adipate, diisononyl phthalate, dioctyl sebacate and dioctyl phthalate.
preferably, the antioxidant is pentaerythritol ester.
Preferably, the azo initiator is one of azobisisobutyronitrile, azobisisoheptonitrile, azobisisovaleronitrile, azobiscyclohexyl carbonitrile and dimethyl azobisisobutyrate initiator.
preferably, the wear-resistant modified polyurethane resin is prepared from the following raw materials in parts by weight:
plasticizer: 9 parts of (1);
polyisocyanate monomers: 45 parts of (1);
Polyester polyol: 35 parts of (B);
Organic diisocyanate: 55 parts of (1);
antioxidant: 7 parts;
dimethyl acetamide: 80 parts of a mixture;
nano carbon fiber: 12 parts of (1);
Azo initiators: 5 parts of the raw materials.
a preparation method of a restrictive pouring modified polyurethane resin for a guide rail of a guide rail electric car comprises the following steps:
step S1, sequentially adding 20-35 parts of polyester polyol and 30-50 parts of polyisocyanate monomer into 60-80 parts of dimethylacetamide, and uniformly stirring at normal temperature to obtain a mixture 1;
step S2, adding 45-55 parts of organic diisocyanate into the mixture 1 in the step S1, placing the mixture in a high-pressure reaction kettle, reacting for 2 hours at 75-85 ℃, and cooling to obtain an intermediate product;
Step S3, adding 5-9 parts of plasticizer, 4-8 parts of antioxidant and 10-15 parts of carbon nanofiber into the intermediate product in the step S2, stirring in a high-speed mixer for 10-15 min, polymerizing by adopting 4-6 parts of azo initiator solution to obtain a product 1, and purifying the product 1;
and S4, pressing and molding the product 1 purified in the S3, opening holes, polishing, and removing corners to obtain the guide rail restraint layer of the modified polyurethane resin.
compared with the prior art, the invention has the following beneficial effects:
(1) according to the invention, dimethylacetamide is skillfully adopted as a dissolving medium, so that the cohesion strength and the adhesion force can be improved while effective dissolution of polyester polyol and polyisocyanate monomers is ensured, and higher strength and wear resistance are ensured;
(2) The polyisocyanate monomer can be cured at normal temperature and also can be cured by heating, a cross-linked structure is easy to generate, and the heat resistance and the solvent resistance are good;
(3) by adding the plasticizer and the antioxidant carbon nanofibers, the wear resistance and the compressive elastic recovery capability are improved, the antioxidant capability is improved, and the service life is prolonged;
(4) According to the invention, azo initiator solution polymerization is skillfully adopted, and monomers of polyester and polyether are polymerized again in a solution-adding polymerization mode to increase the intermiscibility of the monomers, so that the polymerization degree is more excellent, and the hydrolysis resistance performance is better; moreover, the product is purified to reduce the content of free isocyanate, so that the strength and the elasticity are more excellent;
In conclusion, the wear-resistant steel wire rope has the advantages of simplicity and convenience in preparation, good wear resistance, long service life and the like, and has high practical value and popularization value in the technical field of tramcar tracks.
drawings
in order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope of protection, and it is obvious for those skilled in the art that other related drawings can be obtained according to these drawings without inventive efforts.
FIG. 1 is a flow chart of the preparation process of the present invention.
Detailed Description
to further clarify the objects, technical solutions and advantages of the present application, the present invention will be further described with reference to the accompanying drawings and examples, and embodiments of the present invention include, but are not limited to, the following examples. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Example 1
as shown in fig. 1, this embodiment provides a constrained casting modified polyurethane resin for a guide rail of a guideway electric vehicle and a preparation method thereof, wherein the wear-resistant modified polyurethane resin is prepared from the following raw materials in parts by weight: 5 parts of plasticizer, 35 parts of polyisocyanate monomer, 20 parts of polyester polyol, 45 parts of organic diisocyanate, 4 parts of antioxidant, 70 parts of dimethylacetamide, 15 parts of carbon nanofiber and 5 parts of azo initiator. Wherein, the plasticizer is one of dioctyl adipate, diisononyl phthalate, dioctyl sebacate and dioctyl phthalate, and the antioxidant is pentaerythritol ester. The azo initiator is one of azodiisobutyronitrile, azodiisoheptonitrile, azodiisovaleronitrile, azodicyclohexyl formonitrile and azodiisobutyrate dimethyl ester initiator.
The preparation process is briefly described below:
step one, sequentially adding 20 parts of polyester polyol and 35 parts of polyisocyanate monomer into 70 parts of dimethylacetamide, and uniformly stirring at normal temperature to obtain a mixture 1;
Secondly, adding 45 parts of organic diisocyanate into the mixture 1 in the first step, placing the mixture in a high-pressure reaction kettle, reacting for 2 hours at the temperature of 75-85 ℃, and cooling to obtain an intermediate product;
Thirdly, adding 5 parts of plasticizer, 4 parts of antioxidant and 15 parts of carbon nanofibers into the intermediate product obtained in the second step, stirring in a high-speed mixer for 10-15 min, polymerizing by adopting 5 parts of azo initiator solution to obtain a product 1, and purifying the product 1;
and fourthly, pressing and molding the purified product 1 in the third step, opening holes, polishing, and removing corners to obtain the guide rail restraint layer 1 of the modified polyurethane resin.
example 2
as shown in fig. 1, this embodiment provides a constrained casting modified polyurethane resin for a guide rail of a guideway electric vehicle and a preparation method thereof, wherein the wear-resistant modified polyurethane resin is prepared from the following raw materials in parts by weight: 5 parts of plasticizer, 30 parts of polyisocyanate monomer, 35 parts of polyester polyol, 50 parts of organic diisocyanate, 4 parts of antioxidant, 70 parts of dimethylacetamide, 10 parts of carbon nanofiber and 4 parts of azo initiator. Wherein, the plasticizer is one of dioctyl adipate, diisononyl phthalate, dioctyl sebacate and dioctyl phthalate, and the antioxidant is pentaerythritol ester. The azo initiator is one of azodiisobutyronitrile, azodiisoheptonitrile, azodiisovaleronitrile, azodicyclohexyl formonitrile and azodiisobutyrate dimethyl ester initiator. Since the preparation method of this embodiment is similar to that of embodiment 1, it is not repeated herein; the guide rail restraint layer 2 of the modified polyurethane resin can be obtained by preparation.
example 3
as shown in fig. 1, this embodiment provides a constrained casting modified polyurethane resin for a guide rail of a guideway electric vehicle and a preparation method thereof, wherein the wear-resistant modified polyurethane resin is prepared from the following raw materials in parts by weight: 9 parts of plasticizer, 45 parts of polyisocyanate monomer, 35 parts of polyester polyol, 55 parts of organic diisocyanate, 7 parts of antioxidant, 80 parts of dimethylacetamide, 12 parts of carbon nanofiber and 6 parts of azo initiator. Wherein, the plasticizer is one of dioctyl adipate, diisononyl phthalate, dioctyl sebacate and dioctyl phthalate, and the antioxidant is pentaerythritol ester. The azo initiator is one of azodiisobutyronitrile, azodiisoheptonitrile, azodiisovaleronitrile, azodicyclohexyl formonitrile and azodiisobutyrate dimethyl ester initiator. Since the preparation method of this embodiment is similar to that of embodiment 1, it is not repeated herein; the guide rail restraint layer 3 of the modified polyurethane resin can be obtained by preparation.
example 4
As shown in fig. 1, this embodiment provides a constrained casting modified polyurethane resin for a guide rail of a guideway electric vehicle and a preparation method thereof, wherein the wear-resistant modified polyurethane resin is prepared from the following raw materials in parts by weight: 9 parts of plasticizer, 50 parts of polyisocyanate monomer, 35 parts of polyester polyol, 45 parts of organic diisocyanate, 8 parts of antioxidant, 80 parts of dimethylacetamide, 10 parts of carbon nanofiber and 5 parts of azo initiator. Wherein, the plasticizer is one of dioctyl adipate, diisononyl phthalate, dioctyl sebacate and dioctyl phthalate, and the antioxidant is pentaerythritol ester. The azo initiator is one of azodiisobutyronitrile, azodiisoheptonitrile, azodiisovaleronitrile, azodicyclohexyl formonitrile and azodiisobutyrate dimethyl ester initiator. Since the preparation method of this embodiment is similar to that of embodiment 1, it is not repeated herein; the guide rail restraint layer 4 of the modified polyurethane resin can be obtained by preparation.
example 5
As shown in fig. 1, this embodiment provides a constrained casting modified polyurethane resin for a guide rail of a guideway electric vehicle and a preparation method thereof, wherein the wear-resistant modified polyurethane resin is prepared from the following raw materials in parts by weight: 9 parts of plasticizer, 50 parts of polyisocyanate monomer, 30 parts of polyester polyol, 45 parts of organic diisocyanate, 8 parts of antioxidant, 80 parts of dimethylacetamide, 15 parts of carbon nanofiber and 6 parts of azo initiator. Since the preparation method of this embodiment is similar to that of embodiment 1, it is not repeated herein; the guide rail restraint layer 5 of the modified polyurethane resin can be obtained by preparation.
For the performance of the prepared guide rail constraining layer of the modified polyurethane resin, the following tests were performed according to the static stiffness characteristics: at normal temperature, a 200kN or 300kN universal tester (purchased) is used, and the precision is 500N, and the tolerance deviation is not more than 1% of the test device. The width of the loading short rail is 1mm larger than the width of the basic size of the sample, the length of the loading short rail is consistent with the length of the sample, the width of the bottom plate is 170mm, the two sides of the upper surface of the rail bottom are planed at the contact part with the probe of the dial indicator, the two dial indicators are attached to the glass sheet, the probes of the two dial indicators are supported on the base of the testing machine, and the probes of the two dial indicators are symmetrically arranged on the opposite angles of the two sides of the short rail.
And placing the prepared sample on a bottom plate, applying static load of 140kN, unloading, staying for 10s, loading 140kN again, unloading, and then carrying out a test formally. When the formal test is started, the two dial indicators are adjusted to zero, then the two dial indicators are uniformly loaded at the speed of 2-3 kN per second, the two dial indicators stay for 1min when the load is added to 20kN and 80kN respectively, the test is repeated for 3 times, and the average value of the stretching degree is obtained, wherein the test data is as follows:
the tests show that the wear-resistant steel has good wear resistance and enough compressive support strength; compared with the prior art, the tramcar track has the outstanding substantial characteristics and remarkable progress, and has very high practical value and popularization value in the technical field of tramcar tracks.
The above-mentioned embodiments are only preferred embodiments of the present invention, and do not limit the scope of the present invention, but all the modifications made by the principles of the present invention and the non-inventive efforts based on the above-mentioned embodiments shall fall within the scope of the present invention.
Claims (6)
1. A restrictive pouring modified polyurethane resin for a guide rail of a guide rail electric car is characterized by comprising the following raw materials in parts by weight:
plasticizer: 5-9 parts of a solvent;
Polyisocyanate monomers: 30-50 parts of a solvent;
polyester polyol: 20-35 parts of a solvent;
Organic diisocyanate: 45-55 parts of a solvent;
antioxidant: 4-8 parts;
dimethyl acetamide: 60-80 parts;
nano carbon fiber: 10-15 parts;
Azo initiators: 4-6 parts.
2. The restrictively cast modified polyurethane resin for guide rails of electric vehicles according to claim 1, wherein the plasticizer is one of dioctyl adipate, diisononyl phthalate, dioctyl sebacate and dioctyl phthalate.
3. the restrictive pouring modified polyurethane resin for the guide rail of the guide rail electric car as claimed in claim 1, wherein the antioxidant is pentaerythritol ester.
4. the restrictively cast modified polyurethane resin for guide rails and trolleys according to claim 1, wherein the azo initiator is one of azobisisobutyronitrile, azobisisoheptonitrile, azobisisovaleronitrile, azobisdicyclohexylcarbonitrile and dimethyl azobisisobutyrate.
5. the restrictive pouring modified polyurethane resin for the guide rail of the guide rail electric car as claimed in claim 1, is characterized by comprising the following raw materials in parts by weight:
plasticizer: 9 parts of (1);
Polyisocyanate monomers: 45 parts of (1);
Polyester polyol: 35 parts of (B);
Organic diisocyanate: 55 parts of (1);
Antioxidant: 7 parts;
Dimethyl acetamide: 80 parts of a mixture;
nano carbon fiber: 12 parts of (1);
Azo initiators: 5 parts of the raw materials.
6. The preparation method of the restrained pouring modified polyurethane resin for the guide rail of the guide rail electric car according to any one of claims 1 to 5, is characterized by comprising the following steps of:
Step S1, sequentially adding 20-35 parts of polyester polyol and 30-50 parts of polyisocyanate monomer into 60-80 parts of dimethylacetamide, and uniformly stirring at normal temperature to obtain a mixture 1;
step S2, adding 45-55 parts of organic diisocyanate into the mixture 1 in the step S1, placing the mixture in a high-pressure reaction kettle, reacting for 2 hours at 75-85 ℃, and cooling to obtain an intermediate product;
Step S3, adding 5-9 parts of plasticizer, 4-8 parts of antioxidant and 10-15 parts of carbon nanofiber into the intermediate product in the step S2, stirring in a high-speed mixer for 10-15 min, polymerizing by adopting 4-6 parts of azo initiator solution to obtain a product 1, and purifying the product 1;
and S4, pressing and molding the product 1 purified in the S3, opening holes, polishing, and removing corners to obtain the guide rail restraint layer of the modified polyurethane resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910826519.8A CN110563909A (en) | 2019-09-03 | 2019-09-03 | restrictive pouring modified polyurethane resin for guide rail of guide rail electric car and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910826519.8A CN110563909A (en) | 2019-09-03 | 2019-09-03 | restrictive pouring modified polyurethane resin for guide rail of guide rail electric car and preparation method thereof |
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