CN111704878A - Modified cellulose-based thread sealant and preparation method thereof - Google Patents
Modified cellulose-based thread sealant and preparation method thereof Download PDFInfo
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- CN111704878A CN111704878A CN202010559403.5A CN202010559403A CN111704878A CN 111704878 A CN111704878 A CN 111704878A CN 202010559403 A CN202010559403 A CN 202010559403A CN 111704878 A CN111704878 A CN 111704878A
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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
- C09J171/00—Adhesives based on polyethers obtained by reactions forming an ether link in the main chain; Adhesives based on derivatives of such polymers
- C09J171/02—Polyalkylene oxides
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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
- 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
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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
- 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
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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
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
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- 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
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- 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
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Sealing Material Composition (AREA)
- Epoxy Resins (AREA)
Abstract
The invention discloses a modified cellulose-based thread sealant which comprises the following raw materials in parts by mass: 7-10 parts by mass of ionic liquid, 2-4 parts by mass of thermally activated cotton pulp cellulose gel, 90-130 parts by mass of polyether polyol, 1-10 parts by mass of epoxy resin, 5-10 parts by mass of epoxy curing agent, 30-50 parts by mass of filler and 1-5 parts by mass of film forming agent. The invention fully utilizes the physical characteristics of low hardness and high elasticity of the modified cellulose and the stable chemical characteristics, and the obtained thread sealing agent has the characteristics of low hardness, high elasticity and stable chemical performance.
Description
Technical Field
The invention belongs to the technical field of adhesives, and particularly relates to a modified cellulose-based thread sealant and a preparation method thereof.
Background
The thread sealant is used for filling up a tiny gap between the thread of the bolt and a fixed object and achieving the purposes of bonding, fixing and sealing. The thread sealing agent applied in the market at present is mainly anaerobic adhesive, has a plurality of defects, and is mainly reflected in that: the anaerobic adhesive is sensitive to moisture, high in hardness, poor in elasticity and prone to cracking and damage in a high-temperature and high-humidity environment.
Disclosure of Invention
The invention aims to solve the technical problem of providing a modified cellulose-based thread sealant and a preparation method thereof aiming at the defects of the prior art. The invention aims to provide a thread sealing agent with low hardness, high elasticity and stable chemical performance by fully utilizing the physical characteristics and stable chemical characteristics of low hardness and high elasticity of modified cellulose.
The technical scheme adopted by the invention for solving the problems is as follows:
the modified cellulose-based thread sealing agent comprises the following raw materials in parts by weight: 7-10 parts by mass of ionic liquid, 2-4 parts by mass of thermally activated cotton pulp cellulose gel, 90-130 parts by mass of polyether polyol, 1-10 parts by mass of epoxy resin, 5-10 parts by mass of epoxy curing agent, 30-50 parts by mass of filler and 1-5 parts by mass of film forming agent.
According to the scheme, the raw materials also comprise 15-20 parts by mass of isocyanate. Specifically, the isocyanate is one or more of toluene diisocyanate, diphenylmethane diisocyanate, isophorone diisocyanate, hexamethylene diisocyanate, and the like.
According to the scheme, the ionic liquid is one or more of 1-ethyl-3-methylimidazole bromine salt, 1-allyl-3-methylimidazole chlorine salt, 1-butyl-3-methylimidazole chlorine salt, 1-vinyl-3-butylimidazole chlorine salt and the like.
According to the scheme, the preparation method of the thermal activation cotton pulp cellulose gel comprises the following steps: weighing a certain mass of cotton pulp cellulose material with the polymerization degree of 500-1000, and heating the cotton pulp cellulose material in an environment at 150-200 ℃ for 20-60 min to obtain a thermally activated cotton pulp cellulose material (the molecular chain of the cellulose material can be broken in the heat treatment process, which is beneficial to dissolution); weighing a certain mass of sodium hydroxide and urea, and dispersing the sodium hydroxide and urea in distilled water to prepare an aqueous solution of a sodium hydroxide/urea mixture with the sodium hydroxide content of 6-8 wt% and the urea content of 3-5 wt%; dispersing the thermally activated cotton pulp cellulose material into a sodium hydroxide/urea mixture aqueous solution according to the mass ratio of 0.2-0.4: 1, and uniformly stirring to obtain a cotton pulp cellulose solution; and then, freezing the cotton pulp cellulose solution at the temperature of-120 to-20 ℃ for 5 to 48 hours until the solution is completely frozen, dissolving the solution at normal temperature, and stirring the solution until the solution is completely dissolved to obtain the thermally activated cotton pulp cellulose gel.
According to the scheme, the polyether polyol is a mixture of trihydric alcohol and dihydric alcohol in a mass ratio of 2.5-3: 1; the relative molecular weight of the trihydric alcohol is 2000-3000, and the relative molecular weight of the dihydric alcohol is 3000-4000. Specifically, the dihydric alcohol is one or more of polyoxyethylene glycol, polyoxypropylene glycol, polytetrahydrofuran glycol and the like; the triol is one or more of polyoxypropylene triol, oxypropylene-oxyethylene copolyether triol, castor oil and the like.
According to the scheme, the epoxy resin is one or a mixture of more of bisphenol A epoxy resin, bisphenol F epoxy resin, bisphenol S epoxy resin, hydrogenated bisphenol A epoxy resin, novolac epoxy resin, alicyclic epoxy resin, glycidyl ester epoxy resin, glycidyl ether resin, glycidyl amine epoxy resin, halogenated epoxy resin and the like. Wherein the linear phenolic epoxy resin is one or more of F-44, F-48, F-51, F-54, JF-43, JF-45, JF-46, ECN-268, ECN-273, Epikote-154, EPN-1138 and the like; the alicyclic epoxy resin is selected from one or more of polyoxyalkylene glycol diglycidyl ether, 1, 6-hexanediol diglycidyl ether, neopentyl glycol diglycidyl ether or glycerol triglycidyl ether.
According to the scheme, the epoxy curing agent is one or a mixture of more of polyamide, aliphatic polyamine, alicyclic polyamine, polythiol and modified aromatic amine. Wherein, the alicyclic polyamine is selected from one or more of isophorone diamine, norbornane diamine, 1, 4-diaminocyclohexane or bis (aminohexyl) methane, etc.; the alkyl chain or alkoxy chain in the polythiol is selected from one of low-grade (such as C1-6) alkyl or lower alkoxy, such as CapCure 3-800, CapCure3830-81, CapCure 40secHV (USA), Capture, LOF, CapCure WR-6 (Germany), Epomate QX-lO, EPomat QX-40, MP-gg90, EH-316 (Japan) and the like.
According to the scheme, the film forming agent is one or a mixture of polyvinyl butyral, sodium polyacrylate, carboxymethyl cellulose, sodium alginate, polyvinyl alcohol, polymethacrylate and the like.
According to the scheme, the filler is one or a mixture of more of fumed silica, pigment, talcum powder, calcium carbonate and the like.
According to the preparation method of the modified cellulose-based thread sealing agent, according to the mass parts of the raw materials, ionic liquid, thermally activated cotton pulp cellulose gel, polyether polyol, epoxy resin, an epoxy curing agent, a filler and a film forming agent are mixed for 1-10 hours at the temperature of 80-120 ℃ to obtain the modified cellulose-based thread sealing agent. Preferably, when the raw materials further comprise isocyanate, the preparation method of the modified cellulose-based thread sealing agent comprises the steps of mixing ionic liquid, thermally activated cotton pulp cellulose gel, polyether polyol and isocyanate for 1-5 h at the temperature of 80-120 ℃ according to the mass parts of the raw materials, and then adding epoxy resin, an epoxy curing agent, a filler and a film-forming agent for mixing for 1-5 h to obtain the modified cellulose-based thread sealing agent.
Compared with the prior art, the technical scheme of the invention can obtain the following beneficial effects: the invention fully utilizes the physical characteristics of low hardness and high elasticity of the modified cellulose and the stable chemical characteristics to obtain the thread sealant with low hardness, high elasticity and stable chemical performance.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example 1
A modified cellulose-based thread sealing agent is prepared by the following specific steps:
s1) weighing 500g of cotton pulp cellulose material with the polymerization degree of 500, and heating the cotton pulp cellulose material in an environment at 150 ℃ for 60min to obtain a heat-activated cotton pulp cellulose material; preparing a sodium hydroxide/urea mixture aqueous solution with the content of 6 wt% of sodium hydroxide and 3 wt% of urea, dispersing the thermally activated cotton pulp cellulose material into the sodium hydroxide/urea mixture aqueous solution according to the mass ratio of 0.2:1, and uniformly stirring to obtain a cotton pulp cellulose solution; then freezing the cotton pulp cellulose solution at-120 ℃ for 5h until the solution is completely frozen, then dissolving the solution at normal temperature, and stirring the solution until the solution is completely dissolved to obtain the thermal activated cotton pulp cellulose gel;
s2) weighing 7 parts of ionic liquid (1-ethyl-3-methylimidazole bromine salt and 1-allyl-3-methylimidazole chlorine salt in a mass ratio of 1:1), 2 parts of thermally activated cotton pulp cellulose gel, 90 parts of polyether polyol (a mixture of polyoxypropylene glycol and polyoxypropylene triol in a mass ratio of 1: 3), 1 part of epoxy resin (a mixture of linear phenolic epoxy resin F-44 and 1, 6-hexanediol diglycidyl ether in a mass ratio of 1:1), 5 parts of epoxy curing agent (isophorone diamine and polythiol Capcure 3-800 in a mass ratio of 1:1), 30 parts of filler (a mass ratio of 1:1 of talcum powder to calcium carbonate) and 1 part of film-forming carboxymethyl cellulose, blending for 5 hours at the temperature of 80 ℃, obtaining the modified cellulose-based thread sealing agent.
Example 2
A modified cellulose-based thread sealing agent is prepared by the following specific steps:
s1) weighing 500g of cotton pulp cellulose material with the polymerization degree of 600, and heating the cotton pulp cellulose material in an environment at 200 ℃ for 20min to obtain a heat-activated cotton pulp cellulose material; preparing a sodium hydroxide/urea mixture aqueous solution with 8wt% of sodium hydroxide and 5wt% of urea content, dispersing the thermally activated cotton pulp cellulose material in the sodium hydroxide/urea mixture aqueous solution according to the mass ratio of 0.3:1, and uniformly stirring to obtain a cotton pulp cellulose mixture; then freezing the cotton pulp cellulose mixture for 48h at the temperature of-20 ℃ until the mixture is completely frozen; dissolving the frozen cotton pulp cellulose mixture at normal temperature, and stirring until the mixture is completely dissolved to obtain thermally activated cotton pulp cellulose gel;
s2) weighing 10 parts of ionic liquid (1-ethyl-3-methylimidazole bromine salt and 1-allyl-3-methylimidazole chlorine salt in a mass ratio of 2: 1), 4 parts of thermally activated cotton pulp cellulose gel, 130 parts of polyether polyol (a mixture of polyoxypropylene glycol and polyoxypropylene triol in a mass ratio of 1: 2.5), 10 parts of epoxy resin (a mixture of linear phenolic epoxy resin F-44 and 1, 6-hexanediol diglycidyl ether in a mass ratio of 1:1), 10 parts of epoxy curing agent (a mixture of isophorone diamine and polythiol Capcure 3-800 in a mass ratio of 1:1), 50 parts of filler (a mass ratio of talc to calcium carbonate of 1:1)) and 5 parts of film forming agent carboxymethyl cellulose, blending for 1h at the temperature of 120 ℃, obtaining the modified cellulose-based thread sealing agent.
Example 3
A modified cellulose-based thread sealing agent is prepared by the following specific steps:
s1) weighing 500g of cotton pulp cellulose material with the polymerization degree of 800, and heating the cotton pulp cellulose material in an environment at 150 ℃ for 60min to obtain a thermally activated cotton pulp cellulose material; preparing a sodium hydroxide/urea mixture aqueous solution with the content of 6 wt% of sodium hydroxide and 3 wt% of urea, dispersing the thermally activated cotton pulp cellulose material into the sodium hydroxide/urea mixture aqueous solution according to the mass ratio of 0.4:1, and uniformly stirring to obtain a cotton pulp cellulose mixture; then freezing the cotton pulp cellulose mixture for 5h at-120 ℃ until the mixture is completely frozen; dissolving the frozen cotton pulp cellulose mixture at normal temperature, and stirring until the mixture is completely dissolved to obtain thermally activated cotton pulp cellulose gel;
s2) weighing 7 parts by mass of ionic liquid (1-ethyl-3-methylimidazole bromine salt and 1-allyl-3-methylimidazole chlorine salt in a mass ratio of 2: 1), 2 parts by mass of thermally activated cotton pulp cellulose gel, 90 parts by mass of polyether polyol (a mixture of polyoxypropylene glycol and polyoxypropylene triol in a mass ratio of 1: 2.5), and 15 parts by mass of toluene diisocyanate, 1 part of epoxy resin (a mixture of novolac epoxy resin F-44 and 1, 6-hexanediol diglycidyl ether in a mass ratio of 1:1), 5 parts of epoxy curing agent (composed of isophorone diamine and polythiol Capcure 3-800 in a mass ratio of 1:1), 30 parts of filler (a mass ratio of talcum powder to calcium carbonate of 1:1)), and 1 part of film forming agent carboxymethyl cellulose; and then, mixing the ionic liquid, the thermally activated cotton pulp cellulose gel, polyether polyol and diisocyanate for 5 hours at the temperature of 80 ℃, and then adding epoxy resin, an epoxy curing agent, a filler and a film-forming agent for mixing for 5 hours at the temperature of 80 ℃ to obtain the modified cellulose-based thread sealant.
Example 4
A modified cellulose-based thread sealing agent is prepared by the following specific steps:
s1) weighing 500g of cotton pulp cellulose material with the polymerization degree of 1000, and heating the cotton pulp cellulose material in an environment at 200 ℃ for 20min to obtain a heat-activated cotton pulp cellulose material; preparing a sodium hydroxide/urea mixture aqueous solution with 8wt% of sodium hydroxide and 5wt% of urea content, dispersing the thermally activated cotton pulp cellulose material in the sodium hydroxide/urea mixture aqueous solution according to the mass ratio of 0.4:1, and uniformly stirring to obtain a cotton pulp cellulose mixture; then freezing the cotton pulp cellulose mixture for 48h at the temperature of-20 ℃ until the mixture is completely frozen; dissolving the frozen cotton pulp cellulose mixture at normal temperature, and stirring until the mixture is completely dissolved to obtain thermally activated cotton pulp cellulose gel;
s2) weighing 10 parts of ionic liquid (1-ethyl-3-methylimidazole bromine salt and 1-allyl-3-methylimidazole chlorine salt in a mass ratio of 2: 1), 4 parts of thermally activated cotton pulp cellulose gel, 130 parts of polyether polyol (a mixture of polyoxypropylene glycol and polyoxypropylene triol in a mass ratio of 1: 3), 20 parts of diisocyanate (diphenylmethane diisocyanate and isophorone diisocyanate in a mass ratio of 2: 1), a mixture of epoxy resin (linear phenolic epoxy resin F-44 and 1, 6-hexanediol diglycidyl ether in a mass ratio of 1:1)10 parts of epoxy curing agent (isophorone diamine and polythiol Capcure 3-800 in a mass ratio of 1:1) and 50 parts of filler (a mass ratio of talc powder to calcium carbonate of 1:1), and 5 parts of carboxymethyl cellulose as a film forming agent; and then, mixing the ionic liquid, the thermally activated cotton pulp cellulose gel, polyether polyol and diisocyanate for 1h at the temperature of 120 ℃, and then adding epoxy resin, an epoxy curing agent, a filler and a film-forming agent for mixing for 1h at the temperature of 120 ℃ to obtain the modified cellulose-based thread sealant.
The results of performance comparison tests of commercial GY-9522 thread sealing agent with examples 1, 2, 3 and 4 are shown in Table 1. The breaking moment and the average disassembling moment in the table 1 are tested according to the standard GB/T18747.1-2002, and the gluing process, the using condition, the elongation at break and the Shore A hardness are industrial general performance test items, and refer to JB/T7311-2001 and the like.
TABLE 1 thread sealing Performance comparison test
As can be seen from Table 1, the modified cellulose-based thread sealing agent prepared by the invention has the advantages of low hardness, high elasticity, stable chemical performance under high temperature and high humidity conditions, good destructive torque and average disassembly torque, and can ensure the purposes of bonding, fixing and sealing between threads and a fixed object.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included within the scope of the present invention.
Claims (10)
1. The modified cellulose-based thread sealing agent is characterized by comprising the following raw materials in parts by mass: 7-10 parts by mass of ionic liquid, 2-4 parts by mass of thermally activated cotton pulp cellulose gel, 90-130 parts by mass of polyether polyol, 1-10 parts by mass of epoxy resin, 5-10 parts by mass of epoxy curing agent, 30-50 parts by mass of filler and 1-5 parts by mass of film forming agent.
2. The modified cellulose-based thread sealing agent according to claim 1, wherein the raw materials further comprise 15-20 parts by mass of isocyanate, and the isocyanate is one or more of toluene diisocyanate, diphenylmethane diisocyanate, isophorone diisocyanate, and hexamethylene diisocyanate.
3. The modified cellulose-based thread sealing agent according to claim 1 or 2, wherein the ionic liquid is one or more of 1-ethyl-3-methylimidazolium bromide salt, 1-allyl-3-methylimidazolium chloride salt, 1-butyl-3-methylimidazolium chloride salt, or 1-vinyl-3-butylimidazolium chloride salt.
4. A modified cellulose-based thread sealing agent according to claim 1 or 2, characterized in that the heat-activated cotton pulp cellulose gel is prepared as follows: placing the cotton pulp cellulose with the polymerization degree of 500-1000 in an environment with the temperature of 150-200 ℃ for heating for 20-60 min to obtain the thermally activated cotton pulp cellulose; preparing a sodium hydroxide/urea mixture aqueous solution with 6-8 wt% of sodium hydroxide and 3-5 wt% of urea content; dispersing the thermally activated cotton pulp cellulose in a sodium hydroxide/urea mixture aqueous solution according to the mass ratio of 0.2-0.4: 1, and uniformly stirring to obtain a cotton pulp cellulose solution; and then, freezing the cotton pulp cellulose solution at the temperature of-120 to-20 ℃ for 5-48 h until the solution is completely frozen, dissolving the solution at normal temperature, and stirring the solution until the solution is completely dissolved to obtain the thermally activated cotton pulp cellulose gel.
5. The modified cellulose-based thread sealing agent according to claim 1 or 2, wherein the polyether polyol is a mixture of a triol and a diol in a mass ratio of 2.5-3: 1; the relative molecular weight of the trihydric alcohol is 2000-3000, and the relative molecular weight of the dihydric alcohol is 3000-4000; wherein the dihydric alcohol is one or more of polyoxyethylene glycol, polyoxypropylene glycol and polytetrahydrofuran glycol; the triol is one or more of polyoxypropylene triol, oxypropylene-oxyethylene copolyether triol and castor oil.
6. The modified cellulose-based thread sealing agent according to claim 1 or 2, wherein the epoxy resin is one or a mixture of more of bisphenol a epoxy resin, bisphenol F epoxy resin, bisphenol S epoxy resin, hydrogenated bisphenol a epoxy resin, phenol novolac epoxy resin, cycloaliphatic epoxy resin, glycidyl ester epoxy resin, glycidyl ether resin, glycidyl amine epoxy resin, and halogenated epoxy resin; wherein, the alicyclic epoxy resin is selected from one or more of polyoxyalkylene glycol diglycidyl ether, 1, 6-hexanediol diglycidyl ether, neopentyl glycol diglycidyl ether or glycerol triglycidyl ether.
7. A modified cellulose-based thread sealing agent according to claim 1 or 2, characterized in that the epoxy curing agent is one or a mixture of several of polyamide, aliphatic polyamine, alicyclic polyamine, polythiol, modified aromatic amine; wherein, the alicyclic polyamine is selected from one or more of isophorone diamine, norbornane diamine, 1, 4-diaminocyclohexane or bis (aminohexyl) methane.
8. The modified cellulose-based thread sealing agent according to claim 1 or 2, wherein the film forming agent is one or a mixture of polyvinyl butyral, sodium polyacrylate, carboxymethyl cellulose, sodium alginate, polyvinyl alcohol and polymethacrylate; the filler is one or a mixture of more of fumed silica, pigment, talcum powder and calcium carbonate.
9. The preparation method of the modified cellulose-based thread sealing agent of claim 1 is characterized in that according to the mass parts of the raw materials, ionic liquid, thermally activated cotton pulp cellulose gel, polyether polyol, epoxy resin, an epoxy curing agent, a filler and a film forming agent are mixed for 1-10 hours at the temperature of 80-120 ℃ to obtain the modified cellulose-based thread sealing agent.
10. The preparation method of the modified cellulose-based thread sealing agent of claim 2 is characterized in that according to the mass parts of the raw materials, the ionic liquid, the thermally activated cotton pulp cellulose gel, the polyether polyol and the isocyanate are mixed for 1 h-5 h at the temperature of 80-120 ℃, and then the epoxy resin, the epoxy curing agent, the filler and the film forming agent are added and mixed for 1 h-5 h to obtain the modified cellulose-based thread sealing agent.
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| CN112625630A (en) * | 2020-12-18 | 2021-04-09 | 广州市乐基智能科技有限公司 | Composite cellulose adhesive and preparation method thereof |
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| CN112646522B (en) * | 2020-12-18 | 2022-09-30 | 广州市乐基智能科技有限公司 | Pipeline thread sealant and preparation method thereof |
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Denomination of invention: A modified cellulose based thread sealant and its preparation method Effective date of registration: 20221101 Granted publication date: 20220422 Pledgee: China Co. truction Bank Corp Guangzhou Tianhe subbranch Pledgor: GUANGZHOU HUANGPU LETIAN INDUSTRIAL CO.,LTD. Registration number: Y2022980020309 |
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