CN116120878B - Polyurethane caulking adhesive resistant to sand blasting and easy to polish and preparation method thereof - Google Patents

Polyurethane caulking adhesive resistant to sand blasting and easy to polish and preparation method thereof Download PDF

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Publication number
CN116120878B
CN116120878B CN202310148396.3A CN202310148396A CN116120878B CN 116120878 B CN116120878 B CN 116120878B CN 202310148396 A CN202310148396 A CN 202310148396A CN 116120878 B CN116120878 B CN 116120878B
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parts
sand
diisocyanate
resistant
easy
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CN116120878A (en
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张健伟
杜厚俊
王玉东
梁帅
任静
刘欢欢
王加富
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Shandong North Modern Chemistry Industry Co ltd
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Shandong North Modern Chemistry Industry Co ltd
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    • 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
    • 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
    • C08G18/2805—Compounds having only one group containing active hydrogen
    • C08G18/2815—Monohydroxy compounds
    • C08G18/282—Alkanols, cycloalkanols or arylalkanols including terpenealcohols
    • 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
    • C08G18/2805—Compounds having only one group containing active hydrogen
    • C08G18/2815—Monohydroxy compounds
    • C08G18/282—Alkanols, cycloalkanols or arylalkanols including terpenealcohols
    • C08G18/2825—Alkanols, cycloalkanols or arylalkanols including terpenealcohols having at least 6 carbon atoms
    • 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
    • C08G18/28—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
    • C08G18/4205—Polycondensates having carboxylic or carbonic ester groups in the main chain containing cyclic groups
    • C08G18/4208—Polycondensates having carboxylic or carbonic ester groups in the main chain containing cyclic groups containing aromatic groups
    • C08G18/4211—Polycondensates having carboxylic or carbonic ester groups in the main chain containing cyclic groups containing aromatic groups derived from aromatic dicarboxylic acids and dialcohols
    • 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
    • C08G18/4804—Two or more polyethers of different physical or chemical nature
    • C08G18/4812—Mixtures of polyetherdiols with polyetherpolyols having at least three 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
    • C08G18/28—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
    • C08G18/4833—Polyethers containing oxyethylene units
    • 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
    • C08G18/7621—Polyisocyanates or polyisothiocyanates cyclic aromatic containing only one aromatic ring being toluene diisocyanate including isomer mixtures
    • 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
    • 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
    • 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
    • C08G2170/00—Compositions for adhesives
    • 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
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C08K2003/265—Calcium, strontium or barium carbonate
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Inorganic Chemistry (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Abstract

The invention discloses polyurethane caulking adhesive resistant to sand blasting and easy to polish and a preparation method thereof, and the polyurethane caulking adhesive is prepared from the following raw materials: the polyurethane caulking adhesive resistant to sand blasting and easy polishing is prepared by adopting rigid aromatic polyester and isocyanate, then performing end-capping treatment to obtain sand blasting resistant resin, mixing the sand blasting resistant resin with polyurethane prepolymer, and adding filler; the sand-blast-resistant resin has better impact resistance, does not react with polyurethane prepolymer after end-capping treatment, can not be connected with a main chain structure when a product is cured, can be easily worn off during polishing, can be polished and dressed by a pneumatic polisher, and the surface of the dressed adhesive tape is not sticky; has good sand blasting resistance, and can not cause pinholes on the surface of the adhesive tape due to sand blasting.

Description

Polyurethane caulking adhesive resistant to sand blasting and easy to polish and preparation method thereof
Technical Field
The invention relates to the technical field of polyurethane adhesives cured by normal temperature and moisture, in particular to polyurethane caulking adhesive resistant to sand blasting and easy to polish and a preparation method thereof.
Background
The polyurethane sealant has good mechanical strength and tensile property, is suitable for bonding various common base materials, can paint the surface, has good weather resistance and aging resistance, and is used for sealing external gaps of containers, metal boxes, vehicles, machine equipment and the like. The polyurethane caulking adhesive is a sealing adhesive cured by normal temperature and moisture, and the internal composition of the adhesive directly influences the curing time and the mechanical property after curing.
In the process of sealing and using the polyurethane caulking adhesive for a container, due to different design and construction processes of a manufacturer on the container body, a part of adhesive beating positions are not easy to trim when the sealant is coated, polishing treatment is needed to be carried out by using a polishing machine after the adhesive is solidified, and meanwhile, sand blasting is needed to be carried out with the container body after the adhesive polishing treatment is finished for later paint spraying operation. Because polishing is not all operation that polyurethane caulking adhesive products must meet when using, therefore the easy polishing characteristic of the adhesive is not considered in the structural design of the existing polyurethane caulking adhesive, so that the adhesive is difficult to polish in polishing operation, the polished part is sticky after polishing is finished, and the later construction is affected; in addition, the surface of the sealing rubber strip, especially the edge position, can be impacted with a plurality of small holes in the sand blasting operation, so that the attractiveness and the usability of the box body are affected.
Disclosure of Invention
The invention aims to solve the problems that polyurethane caulking adhesive is sticky in the polishing process and is not easy to polish and smooth, and small holes are punched at the edge of an adhesive tape in the sand blasting process.
The invention aims to achieve the aim, and the aim is achieved by the following technical scheme:
The polyurethane caulking adhesive resistant to sand blasting and easy to polish comprises the following raw materials in parts by weight: 6-9 parts of polyether polyol A, 7-10 parts of polyether polyol B, 4-6 parts of diisocyanate A, 1.65-3 parts of aromatic polyester polyol, 0.7-1.5 parts of diisocyanate B, 0.15-0.5 part of blocking agent, 23-30 parts of plasticizer, 0.5-1.5 parts of water scavenger p-toluenesulfonyl isocyanate, 25-30 parts of filler, 16-22 parts of thixotropic agent, 0.3-0.6 part of ultraviolet stabilizer, 0.3-0.6 part of silane coupling agent and 0.03-0.15 part of catalyst;
The polyether polyol A is trifunctional polyoxypropylene ether with the molecular weight of 2000-5000;
The polyether polyol B is difunctional polyoxypropylene ether with the molecular weight of 1000-4000;
the diisocyanate A is diphenylmethane diisocyanate and/or toluene diisocyanate;
the aromatic polyester polyol has a molecular weight of 500-2000 and a difunctional degree, and is synthesized by phthalic acid and glycol;
the diisocyanate B is isophorone diisocyanate and/or hexamethylene diisocyanate;
the end capping agent is a small molecular alcohol containing a single hydroxyl group;
The filler consists of talcum powder and light calcium carbonate.
Preferably, the plasticizer is one or two of epoxidized soybean oil, dipropylene glycol dibenzoate, alkyl sulfonate phenyl ester or phthalate plasticizer;
the thixotropic agent consists of acetylene black and gas-phase white carbon black; preferred acetylene black and fumed silica
The ultraviolet light stabilizer is one or two of 2- (2 ' -hydroxy-3 ',5' -dipentylphenyl) benzotriazole, 2- [2, 4-bis (2, 4-xylyl) -2- (1, 3, 5-triazinyl) 5-octoxyphenol, bis (1, 2, 6-pentamethyl-4-piperidyl) sebacate, 2-hydroxy-4-n-octoxybenzophenone and 2- (2-hydroxy-3, 5-dibutyl tertiary phenyl) -5-chlorobenzotriazole;
The silane coupling agent is gamma-glycidoxypropyl trimethoxysilane and/or gamma-glycidoxypropyl triethoxysilane;
The catalyst is one or two of dibutyl tin dilaurate, stannous octoate, dibutyl tin dichloride, dibutyl tin diacetate, diazabicyclo, dimorpholine diethyl ether, triethylene diamine and triethylamine.
Preferably, the phthalate plasticizer is diisodecyl phthalate, diisononyl phthalate, dioctyl phthalate or butyl benzyl phthalate.
Preferably, the small molecule alcohol containing a single hydroxyl group is methanol, ethanol, propanol, butanol, 1-pentanol or 1-hexanol.
The invention also discloses a preparation method of the polyurethane caulking adhesive resistant to sand blasting and easy to polish, which comprises the following steps:
① Preparing a prepolymer: adding 6-9 parts by weight of polyether polyol A and 7-10 parts by weight of polyether polyol B into a reaction kettle, heating to 105-110 ℃, vacuum dehydrating for 0.5-1 hour under the condition that the vacuum degree is not lower than 0.095MPa, cooling to 55-60 ℃, adding 4-6 parts by weight of diisocyanate A, heating to 80-85 ℃, reacting for 4-5 hours under the protection of nitrogen, and cooling to below 30 ℃ to obtain prepolymer for standby;
② Preparing sand-blast-resistant resin: adding 1.65-3 parts of aromatic polyester polyol into a reaction kettle, heating to 105-110 ℃, vacuum dehydrating for 0.5-1 hour under the condition that the vacuum degree is not lower than 0.095MPa, cooling to 50-55 ℃, adding 0.7-1.5 parts of diisocyanate B, heating to 70-75 ℃, reacting for 3-4 hours under the protection of nitrogen, adding 1-2 parts of plasticizer, cooling to 40-45 ℃, adding 0.15-0.5 part of end-capping reagent within the temperature range, continuing stirring for 0.5-1 hour after the addition is finished, cooling to below 30 ℃ to obtain sand-blast-resistant resin for standby;
③ Preparing polyurethane caulking adhesive resistant to sand blasting and easy to polish: adding the prepolymer obtained in the step ① and the sand-blast resistant resin obtained in the step ② into a stirrer, adding 0.5-1.5 parts of residual plasticizer and water scavenger p-toluenesulfonyl isocyanate, 25-30 parts of filler, 16-22 parts of thixotropic agent, stirring for 20-30 minutes under the conditions of a shearing speed of not less than 10m/s and a vacuum degree of not less than 0.095MPa, then adding 0.3-0.6 part of ultraviolet stabilizer, 0.3-0.6 part of silane coupling agent and 0.03-0.15 part of catalyst, and stirring and mixing uniformly to obtain the sand-blast resistant and easily-polished polyurethane caulking adhesive;
The total mass portion of the plasticizer is 23-30 portions;
The polyether polyol A is trifunctional polyoxypropylene ether with the molecular weight of 2000-5000;
The polyether polyol B is difunctional polyoxypropylene ether with the molecular weight of 1000-4000;
the diisocyanate A is diphenylmethane diisocyanate and/or toluene diisocyanate;
the aromatic polyester polyol has a molecular weight of 500-2000 and a difunctional degree, and is synthesized by phthalic acid and glycol;
the diisocyanate B is isophorone diisocyanate and/or hexamethylene diisocyanate;
the end capping agent is a small molecular alcohol containing a single hydroxyl group;
The filler consists of talcum powder and light calcium carbonate.
Compared with the prior art, the invention has the following advantages:
The polyurethane caulking adhesive resistant to sand blasting and easy to polish is prepared by adopting rigid aromatic polyester and isocyanate, then performing end-capping treatment to obtain sand blasting resistant resin, then mixing the sand blasting resistant resin with polyurethane prepolymer, and adding filler; the sand-blast resistant resin has better impact resistance, does not react with polyurethane prepolymer after end-capping treatment, can not be connected with a main chain structure when being solidified, and can be easily worn off when being polished.
The polyurethane caulking adhesive resistant to sand blasting and easy to polish has good easy-to-polish performance after solidification, and can be used for polishing and trimming adhesive tapes by using a pneumatic polisher, and the surface of the trimmed adhesive tapes is not sticky; has good sand blasting resistance, and can not cause pinholes on the surface of the adhesive tape due to sand blasting.
Drawings
FIG. 1 is a photograph of a red metal paint plate coated with a conventional polyurethane caulk after sandblasting;
FIG. 2 is a photograph of a red metal paint panel coated with the polyurethane caulk of example 10 of the present invention;
reference numerals: 1 polyurethane film 2 metal paint plate.
Detailed Description
The invention aims to provide polyurethane caulking glue resistant to sand blasting and easy to polish and a preparation method thereof, and the invention is further described below with reference to specific examples.
The aromatic polyester polyol can be selected from PS-2352 of Stepan company in the United states, CP-2056 and CP-2112 of Nanjing Kangplastic chemical industry Co., ltd, and can also be selected from similar products which meet the requirements of molecular weight and functionality and are produced by other companies.
Example 1
A polyurethane caulking adhesive resistant to sand blasting and easy to polish is composed of the following raw materials: 6kg of polyether polyol A, 7kg of polyether polyol B, 4kg of diphenylmethane diisocyanate, 1.65kg of aromatic polyester polyol, 0.7kg of isophorone diisocyanate, 0.15kg of methanol, 23kg of epoxidized soybean oil, 0.5kg of water scavenger p-toluenesulfonyl isocyanate, 12.5kg of talcum powder, 12.5kg of light calcium carbonate, 8kg of acetylene black, 8kg of gas phase white carbon black, 0.3kg of 2- (2 ' -hydroxy-3 ',5' -dipentylphenyl) benzotriazole, 0.3kg of gamma-glycidol ether oxypropyl trimethoxysilane and 0.03kg of dibutyltin dilaurate;
the polyether polyol A is trifunctional polyoxypropylene ether with a molecular weight of 2000;
the polyether polyol B is difunctional polyoxypropylene ether with the molecular weight of 1000;
The aromatic polyester polyol has a molecular weight of 500 and a difunctional degree, and is synthesized from phthalic acid and diol (PS-2352 of Stepan Co., U.S.A.).
Example 2
A polyurethane caulking adhesive resistant to sand blasting and easy to polish is composed of the following raw materials: 9kg of polyether polyol A, 10kg of polyether polyol B, 6kg of toluene diisocyanate, 3kg of aromatic polyester polyol, 1.5kg of hexamethylene diisocyanate, 0.5kg of ethanol, 30kg of dipropylene glycol dibenzoate, 1.5kg of water scavenger p-toluenesulfonyl isocyanate, 20kg of talcum powder, 10kg of light calcium carbonate filler, 11kg of acetylene black, 11kg of gas phase white carbon black, 0.6kg of 2- [2, 4-bis (2, 4-xylyl) -2- (1, 3, 5-triazinyl) 5-octyloxyphenol, 0.6kg of gamma-glycidoxypropyl triethoxysilane and 0.15kg of diazabicyclo;
The polyether polyol A is trifunctional polyoxypropylene ether with a molecular weight of 5000;
the polyether polyol B is difunctional polyoxypropylene ether with a molecular weight of 4000;
The aromatic polyester polyol has a molecular weight of 2000 and a difunctional degree, and is synthesized from phthalic acid and glycol; (CP-2056 of Nanjing Kangplastic chemical Co., ltd.).
Example 3
A polyurethane caulking adhesive resistant to sand blasting and easy to polish is composed of the following raw materials: 7kg of polyether polyol A, 8kg of polyether polyol B, 1.8kg of diphenylmethane diisocyanate, 2.7kg of toluene diisocyanate, 2kg of aromatic polyester polyol, 0.5kg of isophorone diisocyanate, 0.5kg of hexamethylene diisocyanate, 0.4kg of propanol, 25kg of alkyl sulfonate, 0.6kg of water scavenger p-methylbenzenesulfonyl isocyanate, 12kg of talcum powder, 16kg of light calcium carbonate, 8kg of acetylene black, 9kg of gas-phase white carbon black, 0.4kg of bis (1, 2, 6-pentamethyl-4-piperidinyl) sebacate, 0.2kg of gamma-glycidoxypropyl trimethoxysilane, 0.2kg of gamma-glycidoxypropyl triethoxysilane, 0.025kg of diazabicyclo and 0.025kg of triethylamine;
The polyether polyol A is trifunctional polyoxypropylene ether with a molecular weight of 3000;
the polyether polyol B is difunctional polyoxypropylene ether with a molecular weight of 3000;
the aromatic polyester polyol has a molecular weight of 1000 and a difunctional degree, and is synthesized from phthalic acid and diol; (CP-2112 of Nanjing Kangplastic chemical Co., ltd.).
Example 4
A polyurethane caulking adhesive resistant to sand blasting and easy to polish is composed of the following raw materials: 8kg of polyether polyol A, 9kg of polyether polyol B, 2kg of diphenylmethane diisocyanate, 3kg of toluene diisocyanate, 2.5kg of aromatic polyester polyol, 0.8kg of isophorone diisocyanate, 0.4kg of hexamethylene diisocyanate, 0.4kg of 1-hexanol, 28kg of diisodecyl phthalate, 1.2kg of water scavenger p-methylbenzenesulfonyl isocyanate, 14kg of talcum powder, 15kg of light calcium carbonate, 10kg of acetylene black, 10kg of gas-phase white carbon black, 0.4kg of 2- (2 ' -hydroxy-3 ',5' -dipentylphenyl) benzotriazole, 0.1kg of 2- (2-hydroxy-3, 5-dibutyl-tertiary-phenyl) -5-chlorobenzotriazole, 0.3kg of gamma-glycidoxypropyl trimethoxysilane, 0.06kg of gamma-glycidoxypropyl triethoxysilane, and 0.06kg of dimorpholine diethyl ether;
the polyether polyol A is trifunctional polyoxypropylene ether with a molecular weight of 4000;
the polyether polyol B is difunctional polyoxypropylene ether with the molecular weight of 1000;
The aromatic polyester polyol has a molecular weight of 2000 and a difunctional degree, and is synthesized from phthalic acid and glycol; (CP-2056 of Nanjing Kangplastic chemical Co., ltd.).
Example 5
A polyurethane caulking adhesive resistant to sand blasting and easy to polish is composed of the following raw materials: 8kg of polyether polyol A, 8kg of polyether polyol B, 4kg of diphenylmethane diisocyanate, 1kg of toluene diisocyanate, 2kg of aromatic polyester polyol, 0.5kg of isophorone diisocyanate, 0.5kg of hexamethylene diisocyanate, 0.3kg of butanol, 20kg of epoxidized soybean oil, 5kg of diisononyl phthalate, 1kg of p-toluenesulfonyl isocyanate as a water scavenger, 14kg of talcum powder, 14kg of light calcium carbonate, 12kg of acetylene black, 8kg of gas-phase white carbon black, 0.3kg of 2- [2, 4-bis (2, 4-xylyl) -2- (1, 3, 5-triazinyl) 5-octyloxyphenol, 0.1kg of 2-hydroxy-4-n-octyloxybenzophenone, 0.1kg of gamma-glycidoxypropyl trimethoxysilane, 0.4kg of gamma-glycidoxypropyl triethoxysilane, 0.05kg of dibutyltin diacetate and 0.05kg of dimorpholine diethyl ether;
The polyether polyol A is trifunctional polyoxypropylene ether with a molecular weight of 3000;
the polyether polyol B is difunctional polyoxypropylene ether with a molecular weight of 2000;
the aromatic polyester polyol has a molecular weight of 1000 and a difunctional degree, and is synthesized from phthalic acid and diol; (CP-2112 of Nanjing Kangplastic chemical Co., ltd.).
Example 6
The preparation method of the polyurethane caulking adhesive resistant to sand blasting and easy to polish, disclosed in the embodiment 1, comprises the following steps:
① Preparing a prepolymer: 6kg of polyether polyol A and 7kg of polyether polyol B are added into a reaction kettle, the temperature is raised to 105 ℃, the mixture is dehydrated in vacuum for 0.5 hour under the condition that the vacuum degree is not lower than 0.095MPa, the temperature is reduced to 55 ℃, 4kg of diphenylmethane diisocyanate is added, the mixture is raised to 80 ℃, the mixture is reacted for 4 hours under the protection of nitrogen, and the temperature is reduced to below 30 ℃ to obtain prepolymer for standby;
② Preparing sand-blast-resistant resin: adding 1.65kg of aromatic polyester polyol into a reaction kettle, heating to 105 ℃, vacuum dehydrating for 0.5 hours under the condition that the vacuum degree is not lower than 0.095MPa, cooling to 50 ℃, adding 0.7kg of isophorone diisocyanate, heating to 70 ℃, reacting for 3 hours under the protection of nitrogen, adding 1kg of epoxidized soybean oil, cooling to 40 ℃, adding 0.15kg of methanol in the temperature range, continuously stirring for 0.5 hour after the addition is finished, and cooling to below 30 ℃ to obtain sand-blast-resistant resin for later use;
③ Preparing polyurethane caulking adhesive resistant to sand blasting and easy to polish: adding the prepolymer obtained in the step ① and the sand-blast resistant resin obtained in the step ② into a stirrer, adding 22kg of epoxidized soybean oil, 0.5kg of water scavenger p-toluenesulfonyl isocyanate, 12.5kg of talcum powder, 12.5kg of light calcium carbonate, 8kg of acetylene black and 8kg of gas-phase white carbon black, stirring for 20 minutes under the conditions of maintaining the shearing speed of not less than 10m/s and the vacuum degree of not less than 0.095MPa, then adding 0.3kg of 2- (2 ' -hydroxy-3 ',5' -dipentylphenyl) benzotriazole, 0.3kg of gamma-glycidyl ether oxypropyl trimethoxysilane and 0.03kg of dibutyl tin dilaurate, and stirring and mixing uniformly to obtain the sand-blast resistant and easy-to-polish polyurethane caulking adhesive.
Example 7
The preparation method of the polyurethane caulking compound resistant to sand blasting and easy to polish, disclosed in the embodiment 2, comprises the following steps:
① Preparing a prepolymer: 9kg of polyether polyol A and 10kg of polyether polyol B are added into a reaction kettle, the temperature is raised to 110 ℃, the mixture is dehydrated in vacuum for 1 hour under the condition that the vacuum degree is not lower than 0.095MPa, the temperature is reduced to 60 ℃, 6kg of toluene diisocyanate is added, the temperature is raised to 85 ℃, the mixture is reacted for 5 hours under the protection of nitrogen, and the temperature is reduced to below 30 ℃ to obtain prepolymer for later use;
② Preparing sand-blast-resistant resin: 3kg of aromatic polyester polyol is added into a reaction kettle, the temperature is raised to 110 ℃, vacuum dehydration is carried out for 1 hour under the condition that the vacuum degree is not lower than 0.095MPa, the temperature is reduced to 55 ℃, 1.5kg of hexamethylene diisocyanate is added, the temperature is raised to 75 ℃, the reaction is carried out for 4 hours under the protection of nitrogen, 2kg of dipropylene glycol dibenzoate is added, the temperature is reduced to 45 ℃, 0.5kg of ethanol is added in the temperature range, stirring is continued for 1 hour after the addition is finished, the temperature is reduced to below 30 ℃ to obtain sand-blast-resistant resin for standby;
③ Preparing polyurethane caulking adhesive resistant to sand blasting and easy to polish: adding the prepolymer obtained in the step ① and the sand-blast resistant resin obtained in the step ② into a stirrer, adding 28kg of dipropylene glycol dibenzoate, 1.5kg of water scavenger p-methylbenzenesulfonyl isocyanate, 20kg of talcum powder, 10kg of light calcium carbonate filler, 11kg of acetylene black, 11kg of gas-phase white carbon black, stirring for 30 minutes under the conditions of maintaining the shearing speed of not less than 10m/s and the vacuum degree of not less than 0.095MPa, then adding 0.6kg of 2- [2, 4-bis (2, 4-xylyl) -2- (1, 3, 5-triazinyl) 5-octyloxyphenol, 0.6kg of gamma-glycidyl ether oxypropyl triethoxysilane and 0.15kg of diazabicyclo, and stirring and mixing uniformly to obtain the sand-blast resistant and easy-to-polish polyurethane caulking compound.
Example 8
The preparation method of the polyurethane caulking adhesive with sand blasting resistance and easy polishing in the embodiment 3 comprises the following steps:
① Preparing a prepolymer: 7kg of polyether polyol A and 8kg of polyether polyol B are added into a reaction kettle, the temperature is raised to 106 ℃, the mixture is dehydrated in vacuum for 40 minutes under the condition that the vacuum degree is not lower than 0.095MPa, the temperature is reduced to 56 ℃, 1.8kg of diphenylmethane diisocyanate and 2.7kg of toluene diisocyanate are added, the mixture is heated to 82 ℃, the mixture is reacted for 4.5 hours under the protection of nitrogen, and the temperature is reduced to below 30 ℃ to obtain prepolymer for standby;
② Preparing sand-blast-resistant resin: adding 2kg of aromatic polyester polyol into a reaction kettle, heating to 108 ℃, vacuum dehydrating for 50 minutes under the condition that the vacuum degree is not lower than 0.095MPa, cooling to 54 ℃, adding 0.5kg of isophorone diisocyanate and 0.5kg of hexamethylene diisocyanate, heating to 72 ℃, reacting for 3.5 hours under the protection of nitrogen, adding 1.5kg of phenyl alkyl sulfonate, cooling to 42 ℃, adding 0.4kg of end-capping agent in the temperature range, continuing stirring for 40 minutes after the addition is finished, cooling to below 30 ℃ to obtain sand-blast-resistant resin for standby;
③ Preparing polyurethane caulking adhesive resistant to sand blasting and easy to polish: adding the prepolymer obtained in the step ① and the sand-blast resistant resin obtained in the step ② into a stirrer, adding 23.5kg of alkyl sulfonate phenyl ester, 0.6kg of water scavenger p-toluenesulfonyl isocyanate, 12kg of talcum powder, 16kg of light calcium carbonate, 8kg of acetylene black, 9kg of gas-phase white carbon black, stirring for 28 minutes under the conditions of a shearing speed of not less than 10m/s and a vacuum degree of not less than 0.095MPa, and then adding 0.4kg of bis (1, 2, 6-pentamethyl-4-piperidinyl) sebacate, 0.2kg of gamma-glycidoxypropyl trimethoxysilane, 0.2kg of gamma-glycidoxypropyl triethoxysilane, 0.025kg of diazabicyclo and 0.025kg of triethylamine, and uniformly stirring and mixing to obtain the sand-blast resistant and easy-polishing polyurethane caulking adhesive.
Example 9
The preparation method of the polyurethane caulking compound resistant to sand blasting and easy to polish, disclosed in the embodiment 4, comprises the following steps:
① Preparing a prepolymer: 8kg of polyether polyol A and 9kg of polyether polyol B are added into a reaction kettle, the temperature is raised to 106 ℃, the mixture is dehydrated in vacuum for 50 minutes under the condition that the vacuum degree is not lower than 0.095MPa, the temperature is reduced to 58 ℃, 2kg of diphenylmethane diisocyanate and 3kg of toluene diisocyanate are added, the mixture is heated to 84 ℃, the mixture is reacted for 4.5 hours under the protection of nitrogen, the temperature is reduced to below 30 ℃ to obtain prepolymer for standby;
② Preparing sand-blast-resistant resin: adding 2.5kg of aromatic polyester polyol into a reaction kettle, heating to 108 ℃, vacuum dehydrating for 40 minutes under the condition that the vacuum degree is not lower than 0.095MPa, cooling to 52 ℃, adding 0.8kg of isophorone diisocyanate, 0.4kg of hexamethylene diisocyanate, heating to 72 ℃, reacting for 3 hours under the protection of nitrogen, adding 1kg of diisodecyl phthalate, cooling to 42 ℃, adding 0.4kg of 1-hexanol in the temperature range, continuing stirring for 50 minutes after the addition is finished, cooling to below 30 ℃, and obtaining sand-blast-resistant resin for standby;
③ Preparing polyurethane caulking adhesive resistant to sand blasting and easy to polish: adding the prepolymer obtained in the step ① and the sand-blast resistant resin obtained in the step ② into a stirrer, adding 27kg of diisodecyl phthalate, 1.2kg of water scavenger p-methylbenzenesulfonyl isocyanate, 14kg of talcum powder, 15kg of light calcium carbonate, 10kg of acetylene black, 10kg of gas-phase white carbon black, stirring for 25 minutes under the conditions of a shearing speed of not less than 10m/s and a vacuum degree of not less than 0.095MPa, then adding 0.4kg of 2- (2 ' -hydroxy-3 ',5' -dipentylphenyl) benzotriazole, 0.1kg of 2- (2-hydroxy-3, 5-dibutyl tertiary phenyl) -5-chlorobenzotriazole, 0.1kg of gamma-glycidyl ether oxypropyl trimethoxysilane, 0.3kg of gamma-glycidyl ether oxypropyl triethoxysilane, 0.06kg of dibutyl tin dichloride and 0.06kg of dimorpholine diethyl ether, and uniformly stirring and mixing to obtain the sand-blast resistant and easy-to-polish polyurethane caulking glue.
Example 10
The preparation method of the polyurethane caulking compound resistant to sand blasting and easy to polish, disclosed in the embodiment 5, comprises the following steps:
① Preparing a prepolymer: 8kg of polyether polyol A and 8kg of polyether polyol B are added into a reaction kettle, the temperature is raised to 108 ℃, the mixture is dehydrated in vacuum for 0.5 hour under the condition that the vacuum degree is not lower than 0.095MPa, the temperature is reduced to 58 ℃, 4kg of diphenylmethane diisocyanate and 1kg of toluene diisocyanate are added, the mixture is heated to 82 ℃, the mixture is reacted for 4 hours under the protection of nitrogen, and the temperature is reduced to below 30 ℃ to obtain prepolymer for standby;
② Preparing sand-blast-resistant resin: adding 2kg of aromatic polyester polyol into a reaction kettle, heating to 108 ℃, vacuum dehydrating for 45 minutes under the condition that the vacuum degree is not lower than 0.095MPa, cooling to 52 ℃, adding 0.5kg of isophorone diisocyanate and 0.5kg of hexamethylene diisocyanate, heating to 74 ℃, reacting for 3.5 hours under the protection of nitrogen, adding 1kg of epoxidized soybean oil and 1kg of diisononyl phthalate, cooling to 44 ℃, adding 0.3kg of butanol within the temperature range, continuing stirring for 0.5 hour after the addition is finished, cooling to below 30 ℃ to obtain sand-blast-resistant resin for standby;
③ Preparing polyurethane caulking adhesive resistant to sand blasting and easy to polish: adding the prepolymer obtained in the step ① and the sand-blast resistant resin obtained in the step ② into a stirrer, adding 19kg of epoxy soybean oil, 4kg of diisononyl phthalate, 1kg of water scavenger p-methylbenzenesulfonyl isocyanate, 14kg of talcum powder, 14kg of light calcium carbonate, 12kg of acetylene black, 8kg of gas-phase white carbon black, stirring for 25 minutes under the conditions of a shearing speed of not less than 10m/s and a vacuum degree of not less than 0.095MPa, then adding 0.3kg of 2- [2, 4-bis (2, 4-xylyl) -2- (1, 3, 5-triazinyl) 5-octoxyphenol, 0.1kg of 2-hydroxy-4-n-octoxybenzophenone, 0.1kg of gamma-glycidyl ether oxypropyl trimethoxysilane, 0.4kg of gamma-glycidyl ether oxypropyl triethoxysilane, 0.05kg of dibutyltin diacetate and 0.05kg of dimorpholine diethyl ether, and uniformly stirring and mixing to obtain the sand-blast resistant and easily-polished polyurethane caulk.
Comparative example
A polyurethane caulk was the same composition as example 5 except that butanol was not added as a capping agent. The preparation was the same as in example 10, except that no butanol was used as the capping agent.
Performance test:
the sandblasting-resistant, easily sandable polyurethane caulks obtained in examples 6 to 10 of the present invention were tested, while the existing polyurethane caulks (purchased by XX) were used as comparative samples.
In the test, test pieces were prepared by applying glue at standard laboratory temperature, and laboratory conditions were carried out according to GB/T2941-2006. Test pieces were placed for 7 days and then tested. Wherein the surface dry time test is carried out according to GB/T13477.5-2002; cure rate testing was performed according to GB/T32369-2015; tensile strength and elongation at break tests were performed according to GB/T528-2009; shear strength testing was performed according to GB/T7124-2008; density tests were carried out according to GB/T13477.2-2018. The test results are shown in Table 1.
TABLE 1 results of Performance test of polyurethane caulks
As can be seen from the results in Table 1, the polyurethane caulking compound of the invention has short surface drying time, high curing speed, better tensile strength, elongation at break and shear strength performance than the existing products, moderate density and suitability for caulking and sealing of external gaps of containers, metal boxes, vehicles, machine equipment and the like; in the comparative example, as the small molecule end-capping agent is not added into the sand-blast resistant resin, the reactive isocyanate end group in the sand-blast resistant resin can participate in the reaction during the moisture curing of the product, so that the sand-blast resistant resin is crosslinked with the main component of the product through chemical reaction, the curing speed of the product is slowed down due to the increase of the isocyanate reactive group, the elongation at break is reduced, the mechanical property is improved to the contrary, but the subsequent polishing easiness is greatly reduced.
The caulk was polished and sand blasted using the following procedure and the results are shown in table 2.
Polishing test: pressing the caulking adhesive into a film with the thickness of about 2mm, performing abrasion test on the film by using an abrasion instrument after 24 hours, using 180# sand paper for the test, respectively weighing 750g weights on two sides, measuring the weight change of the film before and after the film is tested after rotating at the rotating speed of 60 revolutions per minute for 100 revolutions, and calculating the weight loss of the film; after the test is finished, the film is disassembled, the abrasion trace on the surface of the film is touched by a finger, and whether the abrasion position of the film is sticky or not is checked.
Sand blasting test: the caulking compound is coated on the surface of a metal plate, a film with the thickness of about 1mm is scraped, and the film is put into a sand-blasting box for sand blasting test after 24 hours, so that the surface change of the film is observed. The test used was a gas pressure of 0.4MPa.
Table 2 polishing and grit blasting test results
Polishing test results Sand blasting test results
Example 6 Weight loss of 0.160g, no sticking of hand at worn part Film has no small hole
Example 7 Weight loss of 0.181g, no sticking of hand at worn part Film has no small hole
Example 8 Weight loss of 0.186g, no sticking of hand at worn part Film has no small hole
Example 9 Weight loss of 0.173g, no sticking of hand at worn part Film has no small hole
Example 10 Weight loss of 0.193g, no sticking of hand at worn part Film has no small hole
Comparative example Weight loss 0.090g, hand sticking at worn part Film has no small hole
Comparative sample Weight loss 0.041g, hand sticking at worn part Film with more pinholes
As can be seen from the results in table 2, the polyurethane caulking compound of the present invention is easy to polish (high in weight loss) during polishing, and the polished part is not sticky after polishing is completed, thereby facilitating post construction; the polyurethane caulking adhesive has the advantages that the adhesive tape surface is smooth, no small holes exist and the service performance is excellent in the sand blasting process; the existing polyurethane caulking adhesive is not easy to polish in polishing operation, polishing parts are sticky after polishing is finished, later construction is affected, a plurality of small holes can be punched in a sealing adhesive tape in a sand blasting process, the surface is uneven, and the usability is poor. Fig. 1 is a picture of a conventional polyurethane caulking compound coated on a red metal paint plate after sandblasting, a plurality of small holes are formed on a rubber strip, the surface is uneven, and fig. 2 is a picture of a polyurethane caulking compound obtained in example 10 of the present invention after sandblasting on a red metal paint plate, the rubber strip is flat and fine, and the rubber strip has no small holes.

Claims (4)

1. The utility model provides a resistant sandblast, easy polyurethane caulking adhesive of polishing which characterized in that: the adhesive consists of the following raw materials in parts by weight: 6-9 parts of polyether polyol A, 7-10 parts of polyether polyol B, 4-6 parts of diisocyanate A, 1.65-3 parts of aromatic polyester polyol, 0.7-1.5 parts of diisocyanate B, 0.15-0.5 part of blocking agent, 23-30 parts of plasticizer, 0.5-1.5 parts of water scavenger p-toluenesulfonyl isocyanate, 25-30 parts of filler, 16-22 parts of thixotropic agent, 0.3-0.6 part of ultraviolet stabilizer, 0.3-0.6 part of silane coupling agent and 0.03-0.15 part of catalyst;
the polyurethane caulking adhesive resistant to sand blasting and easy to polish is prepared by the following steps:
① Preparing a prepolymer: adding 6-9 parts by weight of polyether polyol A and 7-10 parts by weight of polyether polyol B into a reaction kettle, heating to 105-110 ℃, vacuum dehydrating for 0.5-1 hour under the condition that the vacuum degree is not lower than 0.095MPa, cooling to 55-60 ℃, adding 4-6 parts by weight of diisocyanate A, heating to 80-85 ℃, reacting for 4-5 hours under the protection of nitrogen, and cooling to below 30 ℃ to obtain prepolymer for later use;
② Preparing sand-blast-resistant resin: adding 1.65-3 parts of aromatic polyester polyol into a reaction kettle, heating to 105-110 ℃, vacuum dehydrating for 0.5-1 hour under the condition that the vacuum degree is not lower than 0.095MPa, cooling to 50-55 ℃, adding 0.7-1.5 parts of diisocyanate B, heating to 70-75 ℃, reacting for 3-4 hours under the protection of nitrogen, adding 1-2 parts of plasticizer, cooling to 40-45 ℃, adding 0.15-0.5 part of end-capping reagent within the temperature range, continuing stirring for 0.5-1 hour after the addition is finished, cooling to below 30 ℃ to obtain sand-blast-resistant resin for standby;
③ Preparing polyurethane caulking adhesive resistant to sand blasting and easy to polish: adding the prepolymer obtained in the step ① and the sand-blast resistant resin obtained in the step ② into a stirrer, adding 0.5-1.5 parts of residual plasticizer, water scavenger p-toluenesulfonyl isocyanate, 25-30 parts of filler, 16-22 parts of thixotropic agent, stirring for 20-30 minutes under the conditions of a shearing speed of not less than 10m/s and a vacuum degree of not less than 0.095MPa, then adding 0.3-0.6 part of ultraviolet stabilizer, 0.3-0.6 part of silane coupling agent and 0.03-0.15 part of catalyst, and stirring and mixing uniformly to obtain the sand-blast resistant and easily-polished polyurethane caulking adhesive;
the total mass part of the plasticizer is 23-30 parts;
The polyether polyol A is trifunctional polyoxypropylene ether with a molecular weight of 2000-5000;
The polyether polyol B is difunctional polyoxypropylene ether with a molecular weight of 1000-4000;
the diisocyanate A is diphenylmethane diisocyanate and/or toluene diisocyanate;
The aromatic polyester polyol has a molecular weight of 500-2000, a difunctional degree and is synthesized by phthalic acid and glycol;
the diisocyanate B is isophorone diisocyanate and/or hexamethylene diisocyanate;
the end capping agent is a small molecular alcohol containing a single hydroxyl group;
The filler consists of talcum powder and light calcium carbonate.
2. The sand blast resistant, easy-to-polish polyurethane caulk of claim 1, wherein: the plasticizer is one or two of epoxidized soybean oil, dipropylene glycol dibenzoate, alkyl sulfonate phenyl ester or phthalate plasticizer;
The thixotropic agent consists of acetylene black and gas-phase white carbon black;
The ultraviolet light stabilizer is one or two of 2- (2 ' -hydroxy-3 ',5' -dipentylphenyl) benzotriazole, 2- [2, 4-bis (2, 4-xylyl) -2- (1, 3, 5-triazinyl) 5-octoxyphenol, bis (1, 2, 6-pentamethyl-4-piperidyl) sebacate, 2-hydroxy-4-n-octoxybenzophenone and 2- (2-hydroxy-3, 5-dibutyl tertiary phenyl) -5-chlorobenzotriazole;
The silane coupling agent is gamma-glycidoxypropyl trimethoxysilane and/or gamma-glycidoxypropyl triethoxysilane;
The catalyst is one or two of dibutyl tin dilaurate, stannous octoate, dibutyl tin dichloride, dibutyl tin diacetate, diazabicyclo, dimorpholine diethyl ether, triethylene diamine and triethylamine.
3. The sand blast resistant, easy-to-polish polyurethane caulk of claim 2, wherein: the phthalate plasticizer is diisodecyl phthalate, diisononyl phthalate, dioctyl phthalate or butyl benzyl phthalate.
4. The sand blast resistant, easy-to-polish polyurethane caulk of claim 1, wherein: the small molecular alcohols containing single hydroxyl are methanol, ethanol, propanol, butanol, 1-amyl alcohol or 1-hexanol.
CN202310148396.3A 2023-02-21 2023-02-21 Polyurethane caulking adhesive resistant to sand blasting and easy to polish and preparation method thereof Active CN116120878B (en)

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JPH0797558A (en) * 1993-09-30 1995-04-11 Dainippon Ink & Chem Inc Polyurethane adhesive
CN101818039A (en) * 2010-04-01 2010-09-01 濮阳市万泉化工有限公司 Single-component low-modulus polyurethane building sealant and preparation method thereof
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CN105367736A (en) * 2015-12-01 2016-03-02 烟台德邦科技有限公司 Preparation method for polyurethane hot melt adhesive with good reworking performance
CN110831993A (en) * 2017-05-30 2020-02-21 陶氏环球技术有限责任公司 Two-component solventless adhesive composition
CN113185943A (en) * 2021-04-15 2021-07-30 上海抚佳精细化工有限公司 Polyurethane hot melt adhesive and preparation method and application thereof

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0797558A (en) * 1993-09-30 1995-04-11 Dainippon Ink & Chem Inc Polyurethane adhesive
CN101818039A (en) * 2010-04-01 2010-09-01 濮阳市万泉化工有限公司 Single-component low-modulus polyurethane building sealant and preparation method thereof
CN104356340A (en) * 2014-10-23 2015-02-18 北京铁科首钢轨道技术股份有限公司 Polyurethane prepolymer, double-ingredient polyurethane joint material with polyurethane prepolymer, preparing method and application
CN105367736A (en) * 2015-12-01 2016-03-02 烟台德邦科技有限公司 Preparation method for polyurethane hot melt adhesive with good reworking performance
CN110831993A (en) * 2017-05-30 2020-02-21 陶氏环球技术有限责任公司 Two-component solventless adhesive composition
CN113185943A (en) * 2021-04-15 2021-07-30 上海抚佳精细化工有限公司 Polyurethane hot melt adhesive and preparation method and application thereof

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