CN111647121A - Preparation method of two-component polyurethane composite material for pipeline repair - Google Patents

Preparation method of two-component polyurethane composite material for pipeline repair Download PDF

Info

Publication number
CN111647121A
CN111647121A CN202010537096.0A CN202010537096A CN111647121A CN 111647121 A CN111647121 A CN 111647121A CN 202010537096 A CN202010537096 A CN 202010537096A CN 111647121 A CN111647121 A CN 111647121A
Authority
CN
China
Prior art keywords
parts
composite material
mass
component
polyurethane composite
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010537096.0A
Other languages
Chinese (zh)
Inventor
杨明山
李星辉
李丹婷
安旭
刁翼
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing Institute of Petrochemical Technology
Original Assignee
Beijing Institute of Petrochemical Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Beijing Institute of Petrochemical Technology filed Critical Beijing Institute of Petrochemical Technology
Priority to CN202010537096.0A priority Critical patent/CN111647121A/en
Publication of CN111647121A publication Critical patent/CN111647121A/en
Pending legal-status Critical Current

Links

Images

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
    • C08G18/08—Processes
    • C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
    • 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
    • C08G18/48—Polyethers
    • C08G18/4825—Polyethers containing two hydroxy 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
    • C08G18/70—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
    • C08G18/7614—Polyisocyanates or polyisothiocyanates cyclic aromatic containing only one aromatic ring
    • 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
    • C08G18/70—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
    • C08G18/7671—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups containing only one alkylene bisphenyl group
    • 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
    • C08K3/34—Silicon-containing compounds
    • 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
    • C08K5/13—Phenols; Phenolates
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/02—Non-macromolecular additives
    • C09J11/04—Non-macromolecular additives inorganic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/02—Non-macromolecular additives
    • C09J11/06—Non-macromolecular additives organic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
    • C09J175/04—Polyurethanes
    • C09J175/08—Polyurethanes from polyethers

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Inorganic Chemistry (AREA)
  • Polyurethanes Or Polyureas (AREA)

Abstract

The invention discloses a preparation method of a two-component polyurethane composite material for pipeline repair, which comprises the following steps of mixing 20-30 parts by mass of a polyurethane prepolymer and 10-20 parts by mass of an isocyanate monomer to obtain a preparation raw material component A; then adding 35-45 parts by mass of polyether glycol into a reaction container, heating to 125-145 ℃, vacuumizing, and cooling the reaction container to 70-75 ℃; sequentially adding 0.01-0.1 parts by weight of catalyst, 7-15 parts by weight of inorganic filler, 5-10 parts by weight of micromolecule crosslinking agent and 1-5 parts by weight of functional auxiliary agent to obtain a preparation raw material component B; and (3) mixing the prepared component A and the component B according to the mass ratio of 1-2: 1, mixing to obtain the double-component polyurethane composite material. The polyurethane composite material prepared by the method has the advantages of high curing speed, excellent mechanical property, good chemical corrosion resistance, environmental protection and high construction efficiency.

Description

Preparation method of two-component polyurethane composite material for pipeline repair
Technical Field
The invention relates to the technical field of high polymer materials, in particular to a preparation method of a two-component polyurethane composite material for pipeline repair.
Background
Along with the continuous acceleration of urbanization process, the supervision of relevant departments to city pipe network is strengthened gradually, and perforation and leakage accident all can inevitably appear in most pipeline after putting into service in the underground for a certain period, and the mode of prior art is typically changed for excavating, can involve factors such as demolishment, public coordination of road, ground barrier.
As a novel underground pipeline construction method, the trenchless pipeline repairing method has the advantages of no influence on traffic, high pipe laying speed, high maintenance efficiency, less environmental damage, no influence on normal work, life and the like of people and is more and more favored by pipeline construction departments, so that the development of a pipeline repairing material which is environment-friendly, high in construction efficiency and excellent in curing performance is urgently needed to meet the requirements of trenchless pipeline repairing.
Disclosure of Invention
The invention aims to provide a preparation method of a two-component polyurethane composite material for repairing a pipeline, and the polyurethane composite material prepared by the method has the advantages of high curing speed, excellent mechanical property, good chemical corrosion resistance, environmental friendliness, high construction efficiency and suitability for rapid repair of a non-excavation pipeline.
The purpose of the invention is realized by the following technical scheme:
a method of preparing a two-component polyurethane composite for pipe repair, the method comprising:
step 1, firstly, mixing 20-30 parts by mass of polyurethane prepolymer and 10-20 parts by mass of isocyanate monomer to obtain a preparation raw material component A;
step 2, adding 35-45 parts by mass of polyether glycol into a reaction container, heating to 125-145 ℃, vacuumizing, and cooling the reaction container to 70-75 ℃;
step 3, adding 0.01-0.1 parts by weight of catalyst, 7-15 parts by weight of inorganic filler, 5-10 parts by weight of micromolecule cross-linking agent and 1-5 parts by weight of functional auxiliary agent into the cooled reaction container, stirring for a certain time, and uniformly mixing all the components in the reaction container to obtain a preparation raw material component B;
step 4, mixing the prepared component A and the component B according to a mass ratio of 1-2: 1, placing the mixture into a vacuum drying oven for vacuum pumping, drying and curing treatment to obtain the double-component polyurethane composite material.
According to the technical scheme provided by the invention, the polyurethane composite material prepared by the method has the advantages of high curing speed, excellent mechanical property, good chemical corrosion resistance, environmental friendliness and high construction efficiency, and is suitable for rapid repair of non-excavation pipelines, so that the performance requirement of urban municipal pipeline repair is met, the cost in pipeline repair work is reduced, and the inconvenience brought to people's traffic life by municipal pipeline repair is reduced.
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 description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
Fig. 1 is a schematic flow chart of a preparation method of a two-component polyurethane composite material for pipeline repair provided by an embodiment of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the present invention will be further described in detail with reference to the accompanying drawings, and as shown in fig. 1, a schematic flow chart of a preparation method of a two-component polyurethane composite material for pipeline repair provided by the embodiment of the present invention is shown, where the method includes:
step 1, firstly, mixing 20-30 parts by mass of polyurethane prepolymer and 10-20 parts by mass of isocyanate monomer to obtain a preparation raw material component A;
in this step, the synthesis method of the polyurethane prepolymer is as follows:
adding 25 mass percent of polyether diol into a 1000ml three-neck flask at the temperature of 80 ℃, heating to 130 ℃, vacuumizing for 2.5 hours, removing water in the polyether diol, then reducing the reaction temperature to 75 ℃, adding 40 mass percent of MDI and 35 mass percent of TDI for reacting for 2.5-5 hours under the condition of 150 revolutions per minute of a stirrer, stopping the reaction when the-NCO content reaches 15-20 percent, vacuumizing for 1 hour at the temperature of 80 ℃, and finally discharging to obtain the required polyurethane prepolymer.
The mass fraction of the polyurethane prepolymer is preferably 30.
In addition, the isocyanate monomer used above is a mixture of polymethylene polyphenyl isocyanate (PAPI), Toluene Diisocyanate (TDI), and diphenylmethane diisocyanate (MDI), wherein:
the mass content of-NCO groups of the polymethylene polyphenyl isocyanate is 30-32%, and the viscosity is 150-350 mPa & s;
the toluene diisocyanate had a-NCO% content of 48.2% and a viscosity of 3.2 mPas;
the diphenylmethane diisocyanate had a-NCO% content of 33.5% and a viscosity of 5 mPas.
In specific implementation, polymethylene polyphenyl isocyanate with 30 mass percent of-NCO and 150-200 mPas viscosity is preferred;
the preferable mass part of the isocyanate monomer is 10.
Step 2, adding 35-45 parts by mass of polyether glycol into a reaction container, heating to 125-145 ℃, vacuumizing, and cooling the reaction container to 70-75 ℃;
in the step, the adopted polyether glycol is polypropylene glycol with the molecular weight of 1000 or 2000; preferably the polyether polyol is PPG-1000;
the mass fraction of the polyether glycol used is preferably 40.
Step 3, adding 0.01-0.1 parts by weight of catalyst, 7-15 parts by weight of inorganic filler, 5-10 parts by weight of micromolecule cross-linking agent and 1-5 parts by weight of functional auxiliary agent into the cooled reaction container, stirring for a certain time, and uniformly mixing all the components in the reaction container to obtain a preparation raw material component B;
in the step, the adopted catalyst is an organic tin catalyst or an amine catalyst, preferably dibutyltin dilaurate is used as the catalyst, and the mass portion is specifically 0.01.
The inorganic filler is wollastonite, water glass or bisphenol fluorene, and the water glass is preferably selected as the inorganic filler.
The adopted micromolecule cross-linking agent is micromolecule amine or micromolecule alcohol, and preferably triethanolamine is used as the micromolecule amine cross-linking agent.
The adopted functional auxiliary agent is a plasticizer, a flame retardant or a coupling agent, and is added according to the use requirement.
Step 4, mixing the prepared component A and the component B according to a mass ratio of 1-2: 1, placing the mixture into a vacuum drying oven for vacuum pumping, drying and curing treatment to obtain the double-component polyurethane composite material.
Wherein, the unit adopted by the mass parts of the raw materials can be gram or kilogram, and the dosage of the mass parts is adjusted according to the process requirement.
The process and material effects of the above preparation method are described in detail by specific examples, as shown in table 1 below, the raw materials are prepared according to the mass parts in table 1 below, and the process is performed according to the above examples, so as to obtain the corresponding two-component polyurethane composite material.
Table 1 formula table
Figure BDA0002537445360000031
Figure BDA0002537445360000041
The two-component polyurethane composite obtained in the above comparative example and three examples was then subjected to a performance test, and the final test data are shown in table 2 below:
TABLE 2 test parameters for two-component polyurethane composites
Figure BDA0002537445360000042
From table 2 above, it can be seen that: compared with other spraying materials, the composite material prepared by the three embodiments has the advantages that the mechanical property is obviously improved, the operation time is easy to adjust when the polyurethane material is sprayed, no solvent is used, the curing time is short, the cohesive force and the anti-corrosion capability are stronger, the composite material is green and environment-friendly, the cost is low, the construction efficiency is high, the composite material can be solidified after being sprayed for 1min, and the composite material can be completely cured within 4-6 hours; and because the addition of the inorganic filler can shorten the curing induction period and improve the curing degree, a high-modulus product is obtained, the pipeline repairing effect is better, the performance requirement of urban municipal pipeline repairing is met, the cost in the pipeline repairing work is reduced, and the inconvenience brought to the traffic life of people by municipal pipeline repairing is reduced.
It is noted that those skilled in the art will recognize that embodiments of the present invention are not described in detail herein.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (8)

1. A preparation method of a two-component polyurethane composite material for pipeline repair is characterized by comprising the following steps:
step 1, firstly, mixing 20-30 parts by mass of polyurethane prepolymer and 10-20 parts by mass of isocyanate monomer to obtain a preparation raw material component A;
step 2, adding 35-45 parts by mass of polyether glycol into a reaction container, heating to 125-145 ℃, vacuumizing, and cooling the reaction container to 70-75 ℃;
step 3, adding 0.01-0.1 parts by weight of catalyst, 7-15 parts by weight of inorganic filler, 5-10 parts by weight of micromolecule cross-linking agent and 1-5 parts by weight of functional auxiliary agent into the cooled reaction container, stirring for a certain time, and uniformly mixing all the components in the reaction container to obtain a preparation raw material component B;
step 4, mixing the prepared component A and the component B according to a mass ratio of 1-2: 1, placing the mixture into a vacuum drying oven for vacuum pumping, drying and curing treatment to obtain the double-component polyurethane composite material.
2. The method for preparing the two-component polyurethane composite material for repairing the pipeline according to claim 1, wherein the mass part of the polyurethane prepolymer is 30.
3. The method for preparing the two-component polyurethane composite material for repairing the pipeline according to claim 1, wherein the isocyanate monomer used is a mixture of polymethylene polyphenyl isocyanate, toluene diisocyanate and diphenylmethane diisocyanate, wherein:
the mass content of-NCO groups of the polymethylene polyphenyl isocyanate is 30-32%, and the viscosity is 150-350 mPa & s;
the toluene diisocyanate had a-NCO% content of 48.2% and a viscosity of 3.2 mPas;
the diphenylmethane diisocyanate had a-NCO% content of 33.5% and a viscosity of 5 mPas;
the mass portion of the adopted isocyanate monomer is specifically 10.
4. The method for preparing the two-component polyurethane composite material for repairing the pipeline according to claim 1, wherein the adopted polyether glycol is polypropylene glycol with a molecular weight of 1000 or 2000;
the mass portion of the adopted polyether diol is specifically 40.
5. The preparation method of the two-component polyurethane composite material for repairing the pipeline according to claim 1, wherein the adopted catalyst is an organic tin catalyst or an amine catalyst, and the mass fraction is specifically 0.01.
6. The method for preparing the two-component polyurethane composite material for repairing the pipeline as claimed in claim 1, wherein the inorganic filler is wollastonite, water glass or bisphenol fluorene.
7. The method for preparing the two-component polyurethane composite material for repairing the pipeline according to claim 1, wherein the adopted micromolecule cross-linking agent is micromolecule amine or micromolecule alcohol.
8. The preparation method of the two-component polyurethane composite material for repairing the pipeline according to claim 1, wherein the adopted functional auxiliary agent is a plasticizer, a flame retardant or a coupling agent, and is added according to use requirements.
CN202010537096.0A 2020-06-12 2020-06-12 Preparation method of two-component polyurethane composite material for pipeline repair Pending CN111647121A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010537096.0A CN111647121A (en) 2020-06-12 2020-06-12 Preparation method of two-component polyurethane composite material for pipeline repair

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010537096.0A CN111647121A (en) 2020-06-12 2020-06-12 Preparation method of two-component polyurethane composite material for pipeline repair

Publications (1)

Publication Number Publication Date
CN111647121A true CN111647121A (en) 2020-09-11

Family

ID=72341681

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010537096.0A Pending CN111647121A (en) 2020-06-12 2020-06-12 Preparation method of two-component polyurethane composite material for pipeline repair

Country Status (1)

Country Link
CN (1) CN111647121A (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4681986A (en) * 1986-02-24 1987-07-21 Royston Laboratories, Inc. Splice construction for electrical cable and method for making the same
CN102876279A (en) * 2012-09-17 2013-01-16 太原市塑料研究所 Polyurethane adhesive for trenchless repairing of pipelines and preparation method for polyurethane adhesive
CN104176988A (en) * 2014-08-22 2014-12-03 北京艾施姆科技有限公司 Organic/inorganic composite material for rapidly repairing pit slots of bituminous pavement and preparation method thereof
CN104592485A (en) * 2015-02-06 2015-05-06 河南理工大学 Fire-retardant high-flexibility two-shot grouting material and preparation method thereof
CN104974332A (en) * 2015-07-03 2015-10-14 中国铁道科学研究院铁道建筑研究所 Foaming-free fast-curing high-strength leak-stopping waterproof polyurethane grouting material
CN109970947A (en) * 2019-03-20 2019-07-05 镇江利德尔复合材料有限公司 A kind of resin for restoration and its preparation method and application for no-dig technique pipeline point reparation

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4681986A (en) * 1986-02-24 1987-07-21 Royston Laboratories, Inc. Splice construction for electrical cable and method for making the same
CN102876279A (en) * 2012-09-17 2013-01-16 太原市塑料研究所 Polyurethane adhesive for trenchless repairing of pipelines and preparation method for polyurethane adhesive
CN104176988A (en) * 2014-08-22 2014-12-03 北京艾施姆科技有限公司 Organic/inorganic composite material for rapidly repairing pit slots of bituminous pavement and preparation method thereof
CN104592485A (en) * 2015-02-06 2015-05-06 河南理工大学 Fire-retardant high-flexibility two-shot grouting material and preparation method thereof
CN104974332A (en) * 2015-07-03 2015-10-14 中国铁道科学研究院铁道建筑研究所 Foaming-free fast-curing high-strength leak-stopping waterproof polyurethane grouting material
CN109970947A (en) * 2019-03-20 2019-07-05 镇江利德尔复合材料有限公司 A kind of resin for restoration and its preparation method and application for no-dig technique pipeline point reparation

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
李子东等: "《实用胶粘剂原材料手册》", 31 July 1999, 国防工业出版社 *
郭健: ""一种非开挖管道修复用聚氨酯固化体系的开发研究"", 《化工新型材料》 *

Similar Documents

Publication Publication Date Title
CN102093536B (en) Polyurethane prepolymer, polyurethane grouting material and preparation method thereof
CN103387353B (en) Elastic concrete used for rapidly repairing expansion joint
CN103881047B (en) Polyurethane potting material of high-insulativity hydrolysis and preparation method thereof
CN104448207B (en) A kind of injecting paste material that can be used for regulation plate-type ballastless track to rise soil and preparation method thereof and application method
CN101358030B (en) Method for preparing high performance urethane elastomer for thermal barrier coating
CN105885767A (en) MDI-base polyurethane electronic pouring sealant as well as preparation method and application method thereof
US10544253B2 (en) Method for improving fracture toughness of polyisocyanurate comprising reaction products
CN108929426A (en) A kind of polyurethane prepreg and the preparation method and application thereof
CN109942779B (en) High-speed rail ballastless track open joint repairing slurry and preparation method thereof
CN1221430A (en) Polyisocyanate modified isomonoolefin-paraalkylstyrene elastomeric compositions
CN113429540B (en) Method for preparing polyurethane thermal insulation material by degrading waste polyurethane with polyol alcoholysis agent
CN102464789A (en) Waterproof material based on polyurea and its preparation method
CN104987489A (en) Highly-wear-resistant, low-temperature-resistant, folding-resistant, hydrolysis-resistant polyurethane surfacing resin
CN111518476A (en) Polyurethane modified asphalt-based non-cured waterproof coating and preparation method and application thereof
CN114836115A (en) Polyurea coating for repairing trenchless pipeline lining and preparation method thereof
CN100475743C (en) Method for preventing stripping of concrete
AU2013357537B2 (en) Hydrolysis-stable polyurethane for use in the off-shore realm
CN107189028B (en) Environment-friendly high-performance rapid demoulding polyurethane reaction injection molding composition and preparation method of autocatalysis chain extender thereof
CN111647121A (en) Preparation method of two-component polyurethane composite material for pipeline repair
CN114395097B (en) Double-component flame-retardant polyurethane material for reinforcing underground roadway and preparation method thereof
CN116217871A (en) Preparation method of solvent-free polyurethane with self-repairing function and preparation method thereof
CN116253853A (en) High-adhesion quick-release polyurethane composition, and method and application for preparing polyurethane product
CN1042549C (en) Water-proof polyurethane coating film and preparation method thereof
CN107828037A (en) A kind of TPU materials available for drinking-water pipe and preparation method thereof
CN112322026A (en) Polyurethane material and polyurethane foam

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20200911