CN115197667A - Special adhesive for connecting fluoroplastic lining layers and preparation method thereof - Google Patents
Special adhesive for connecting fluoroplastic lining layers and preparation method thereof Download PDFInfo
- Publication number
- CN115197667A CN115197667A CN202210851386.1A CN202210851386A CN115197667A CN 115197667 A CN115197667 A CN 115197667A CN 202210851386 A CN202210851386 A CN 202210851386A CN 115197667 A CN115197667 A CN 115197667A
- Authority
- CN
- China
- Prior art keywords
- rubber
- portions
- adhesive
- epoxy resin
- special adhesive
- 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
Links
Classifications
-
- 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
- C09J163/00—Adhesives based on epoxy resins; Adhesives based on derivatives of epoxy resins
-
- 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
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
- C08G59/44—Amides
-
- 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
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
- C08G59/50—Amines
-
- 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
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
Abstract
The invention discloses a special adhesive for connecting fluoroplastic lining layers and a preparation method thereof, and relates to the technical field of adhesives, wherein the special adhesive for connecting the fluoroplastic lining layers comprises the following components in parts by weight: 20 to 40 portions of non-polar rubber, 10 to 20 portions of polar rubber, 60 to 80 portions of epoxy resin, 0.02 to 2.0 portions of coupling agent, 0.05 to 2.0 portions of epoxy curing agent and 50 to 100 portions of solvent. This application is through the combination between non-polar rubber, polar rubber and the epoxy to under the effect of curing agent and coupling agent, synergistic effect's effect has been reached, make fluoroplastics lining layer connect special gluing agent, not only possess high low temperature resistant ability simultaneously, and bonding strength is high, the laminating degree of fluoroplastics lining layer and various substrates has been improved, the problem that the lining layer drops, swells has effectively been avoided, the application environment and the field of fluoroplastics lining equipment have been widened.
Description
Technical Field
The invention relates to the technical field of adhesives, in particular to a special adhesive for connecting fluoroplastic lining layers and a preparation method thereof.
Background
Fluoroplastics have excellent dielectric properties, chemical corrosion resistance, high and low temperature resistance, water resistance, aging resistance, nonflammability and other properties, and are widely applied to various fields of chemical industry, electronics, electrical, semiconductors, aerospace, machinery, medicine, automobiles and the like. The fluoroplastic serving as a lining layer is directly lined on corresponding equipment (such as industrial-grade or electronic-grade equipment) and is the most common use mode, but the fluoroplastic is made of an ultra-difficult bonding material, so that the fluoroplastic needs to be connected on the corresponding equipment by adopting an adhesive when serving as the lining layer. However, the existing adhesive can only be used in a certain high-temperature or low-temperature environment, and is difficult to have the high and low temperature resistance, and when the temperature is too high or too low, the adhesive performance of the adhesive can be greatly weakened, so that the lining layer is separated from the equipment, and the lining layer equipment fails to be used. Meanwhile, the adhesive strength of the existing adhesive is mostly low, particularly in high and low temperature environments, the adhesive performance is poor, and the lining layer is easy to fall off and swell, so that the use environment of fluoroplastic lining equipment is limited.
Disclosure of Invention
1. Technical problem to be solved by the invention
The invention provides a special adhesive for connecting fluoroplastic lining layers and a preparation method thereof, aiming at solving the technical problems that the existing adhesive is difficult to have high and low temperature resistance and low in bonding strength, the adhesive has the advantages of high and low temperature resistance, high bonding strength and good bonding property, and the application environment and the field of fluoroplastic lining equipment are widened.
2. Technical scheme
In order to solve the problems, the technical scheme provided by the invention is as follows:
the special adhesive for connecting the fluoroplastic lining layer comprises the following components in parts by weight: 20 to 40 portions of non-polar rubber, 10 to 20 portions of polar rubber, 60 to 80 portions of epoxy resin, 0.02 to 2.0 portions of coupling agent, 0.05 to 2.0 portions of epoxy curing agent and 50 to 100 portions of solvent.
According to the application, through the improvement of the existing adhesive formula, the nonpolar rubber, the polar rubber and the epoxy resin are used as main raw material components of the adhesive, the molecular cohesive energy of the nonpolar rubber is small, the cold resistance is excellent, the good laminating performance at low temperature can be ensured, and the adhesive can be used as a toughening agent to improve the toughness, the ductility and the air tightness of the epoxy resin; meanwhile, the polar rubber can enhance the bonding strength between metals and has good cohesion, so that good bonding is realized at a certain high temperature, and the weather resistance, chemical resistance and heat resistance of the adhesive are improved; moreover, epoxy resin can take place curing reaction with the epoxy hardener, the three-dimensional space network polymer that possesses excellent structural stability and intensity is formed to the mutual cross-linking between the molecule for the gluing agent after the solidification possesses splendid high temperature resistance, and epoxy resin can bond metal and non-metallic material, and have good compatibility between with the rubber, greatly increased the adhesive force of bonding interface department, improved bonding strength, improved good adhesive property for the connection of fluorine backing layer and various substrates (equipment), guaranteed laminating fastness between the two. In addition, the molecules of the coupling agent in the components contain active functional groups capable of chemically reacting with the surface of a base material (equipment) and active functional groups capable of reacting with epoxy resin or three-dimensional space reticular polymer, so that the coupling agent plays a role of 'molecular bridge', and the adhesive force of the adhesive and various base materials is effectively improved, namely the adhesive strength of the adhesive is effectively improved. Therefore, the application combines the non-polar rubber, the polar rubber and the epoxy resin, and under the action of the curing agent and the coupling agent, the synergistic effect is achieved, the obtained fluoroplastic lining layer is connected with the special adhesive, the adhesive not only has the high and low temperature resistance, but also has high bonding strength, the laminating degree of the fluoroplastic lining layer and various base materials is improved, the problems of falling off and bulging of the lining layer are effectively avoided, and the application environment and the field of fluoroplastic lining equipment are widened.
Optionally, the non-polar rubber is at least one of polyisobutylene rubber, styrene butadiene rubber and butyl rubber.
Optionally, the polar rubber is at least one of phenolic resin modified chloroprene rubber, chloroprene rubber and nitrile rubber.
Optionally, the epoxy resin is at least one of bisphenol a epoxy resin, glycidyl ester epoxy resin, glycidyl amine epoxy resin and alicyclic epoxy resin.
Optionally, the epoxy curing agent is at least one of modified amines, low molecular weight polyamides, dicyandiamide, hydrazide, amidines and boron trifluoride complexes.
Optionally, the coupling agent is at least one of gamma-aminopropyltriethoxysilane, gamma- (2, 3-glycidoxy) propyltrimethoxysilane, N-beta (aminoethyl) -gamma-aminopropyltrimethoxysilane, bis (dioctylpyrophosphate) ethylene titanate and isopropyltristearate titanate.
Optionally, the solvent is one or more of toluene, xylene, ethyl acetate and butanone.
Meanwhile, the application also provides a preparation method of the special adhesive for connecting the fluoroplastic lining layer, which comprises the following steps:
1) Stirring and mixing the nonpolar rubber, the polar rubber and the solvent, then adding the epoxy resin and the solvent, and continuously stirring and mixing to obtain a mixed diluent;
2) Mixing a coupling agent and a solvent to obtain a coupling agent diluent;
3) Mixing an epoxy curing agent and a solvent to obtain epoxy curing agent diluent;
4) Adding the coupling agent diluent obtained in the step 2) into the mixed diluent obtained in the step 1), stirring uniformly, then adding the epoxy curing agent diluent obtained in the step 3), and continuously stirring uniformly to obtain the special adhesive for connecting the fluoroplastic lining layer.
Optionally, in the step 1), the stirring speed is 20-40r/min, the stirring temperature is normal temperature, the stirring and mixing time of the nonpolar rubber, the polar rubber and the solvent is 8-12min, and the continuous stirring time is 8-12min; in the step 4), the stirring speed is 40-60r/min, the coupling agent diluent is added into the mixed diluent, the stirring time is 8-12min, and the stirring time is continued for 20-40min.
Optionally, the viscosity of the special adhesive for connecting the fluoroplastic lining layer is 22000-24000cps.
3. Advantageous effects
Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:
(1) According to the special adhesive for connecting the fluoroplastic lining layer, the existing adhesive formula is improved, the nonpolar rubber, the polar rubber and the epoxy resin are used as main raw material components of the adhesive, the cohesive energy of molecules of the nonpolar rubber is small, the cold resistance is excellent, the good bonding performance at low temperature can be ensured, and the adhesive can be used as a toughening agent to improve the toughness, the ductility and the air tightness of the epoxy resin; meanwhile, the polar rubber can enhance the bonding strength between metals and has good cohesion, so that good bonding is realized at a certain high temperature, and the weather resistance, chemical resistance and heat resistance of the adhesive are improved; moreover, the epoxy resin can be subjected to a curing reaction with an epoxy curing agent, molecules are mutually crosslinked to form a three-dimensional space reticular polymer with excellent structural stability and strength, so that the cured adhesive has excellent high-temperature resistance, the epoxy resin can be used for bonding metal and non-metal materials and has good compatibility with rubber, the bonding force at a bonding interface is greatly increased, the bonding strength is improved, the good bonding performance is improved for the connection of the fluorine lining layer and various substrates (equipment), and the bonding fastness of the fluorine lining layer and various substrates (equipment) is ensured. In addition, the molecules of the coupling agent in the components contain active functional groups capable of chemically reacting with the surface of a base material (equipment) and active functional groups capable of reacting with epoxy resin or three-dimensional space reticular polymer, so that the coupling agent plays a role of 'molecular bridge', and the adhesive force of the adhesive and various base materials is effectively improved, namely the adhesive strength of the adhesive is effectively improved. Therefore, the application is realized through the combination of the non-polar rubber, the polar rubber and the epoxy resin, and under the action of the curing agent and the coupling agent, the synergistic effect is achieved, the obtained fluoroplastic lining layer is connected with the special adhesive, the high-low temperature resistance is realized, the bonding strength is high, the laminating degree of the fluoroplastic lining layer and various base materials is improved, the problems of falling off and swelling of the lining layer are effectively avoided, and the application environment and the field of fluoroplastic lining equipment are widened.
(2) The preparation method of fluoroplastic lining layer connection special adhesive provided by the embodiment of the application is simple in step, the prepared fluoroplastic lining layer connection special adhesive not only has high and low temperature resistance, but also is high in bonding strength, the fitting degree of the fluoroplastic lining layer and various base materials is improved, the problems that the lining layer falls off and swells are effectively avoided, and the application environment and the field of fluoroplastic lining equipment are widened.
Detailed Description
In order to further understand the content of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to 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 of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the reagent raw material components referred to in the present application are all commercially available.
The special adhesive for connecting the fluoroplastic lining layer comprises the following components in parts by weight: 20 to 40 portions of non-polar rubber, 10 to 20 portions of polar rubber, 60 to 80 portions of epoxy resin, 0.02 to 2.0 portions of coupling agent, 0.05 to 2.0 portions of epoxy curing agent and 50 to 100 portions of solvent. Wherein the nonpolar rubber is at least one of polyisobutylene rubber, styrene butadiene rubber and butyl rubber; the polar rubber is at least one of phenolic resin modified chloroprene rubber, chloroprene rubber and nitrile rubber; the epoxy resin is at least one of bisphenol A epoxy resin, glycidyl ester epoxy resin, glycidyl amine epoxy resin and alicyclic epoxy resin; the epoxy curing agent is at least one of modified amine, low molecular polyamide, dicyandiamide, hydrazide, amidine and boron trifluoride complex; the coupling agent is at least one of gamma-aminopropyltriethoxysilane, gamma- (2, 3-epoxypropoxy) propyltrimethoxysilane, N-beta (aminoethyl) -gamma-aminopropyltrimethoxysilane, bis (dioctyl pyrophosphoric acid acyloxy) ethylene titanate and isopropyl tristearic acid titanate coupling agent; the solvent is one or more of toluene, xylene, ethyl acetate and butanone.
According to the application, through improvement of the existing adhesive formula, the nonpolar rubber, the polar rubber and the epoxy resin are used as main raw material components of the adhesive, the nonpolar rubber has small molecular cohesive energy and excellent cold resistance, good laminating performance at low temperature can be ensured, and the adhesive can be used as a toughening agent to improve the toughness, ductility and air tightness of the epoxy resin; meanwhile, the polar rubber can enhance the bonding strength between metals and has good cohesion, so that good bonding is realized at a certain high temperature, and the weather resistance, chemical resistance and heat resistance of the adhesive are improved; moreover, the epoxy resin can be subjected to a curing reaction with an epoxy curing agent, molecules are mutually crosslinked to form a three-dimensional space reticular polymer with excellent structural stability and strength, so that the cured adhesive has excellent high-temperature resistance, the epoxy resin can be used for bonding metal and non-metal materials and has good compatibility with rubber, the bonding force at a bonding interface is greatly increased, the bonding strength is improved, the good bonding performance is improved for the connection of the fluorine lining layer and various substrates (equipment), and the bonding fastness of the fluorine lining layer and various substrates (equipment) is ensured. In addition, the molecules of the coupling agent in the components contain active functional groups capable of chemically reacting with the surface of a base material (equipment) and active functional groups capable of reacting with epoxy resin or three-dimensional space reticular polymer, so that the coupling agent plays a role of 'molecular bridge', and the adhesive force of the adhesive and various base materials is effectively improved, namely the adhesive strength of the adhesive is effectively improved. Therefore, the application is realized through the combination of the non-polar rubber, the polar rubber and the epoxy resin, and under the action of the curing agent and the coupling agent, the synergistic effect is achieved, the obtained fluoroplastic lining layer is connected with the special adhesive, the high-low temperature resistance is realized, the bonding strength is high, the laminating degree of the fluoroplastic lining layer and various base materials is improved, the problems of falling off and swelling of the lining layer are effectively avoided, and the application environment and the field of fluoroplastic lining equipment are widened.
Meanwhile, the application also provides a preparation method of the special adhesive for connecting the fluoroplastic lining layer, which comprises the following steps:
1) According to the weight portion, 20-40 portions of nonpolar rubber, 10-20 portions of polar rubber and 15-25 portions of solvent are stirred and mixed for 8-12min at normal temperature, the stirring speed is 20-40r/min, then 60-80 portions of epoxy resin and 15-25 portions of solvent are added, the mixture is continuously stirred and mixed for 8-12min, the stirring speed is 20-40r/min, and mixed diluent is obtained;
2) Mixing 0.02-2.0 parts of coupling agent and 10-25 parts of solvent at normal temperature to obtain coupling agent diluent;
3) Mixing 0.05-2.0 parts of epoxy curing agent and 10-25 parts of solvent at normal temperature to obtain epoxy curing agent diluent;
4) Adding the coupling agent diluent obtained in the step 2) into the mixed diluent obtained in the step 1), stirring at the normal temperature for 8-12min at the stirring speed of 40-60r/min, and after the mixing is uniform, adding the epoxy curing agent diluent obtained in the step 3), continuously stirring for 20-40min at the stirring speed of 40-60r/min, and after the mixing is uniform, obtaining the fluoroplastic lining layer connection special adhesive with the viscosity of 22000-24000cps (25 ℃).
Example 1
The special adhesive for connecting the fluoroplastic lining layer comprises the following components in parts by weight: 20 parts of polyisobutylene rubber, 10 parts of phenolic resin modified chloroprene rubber, 60 parts of bisphenol A epoxy resin, 0.08 part of gamma-aminopropyl triethoxysilane, 0.08 part of modified amine and 50 parts of xylene solution.
According to the weight parts, stirring and mixing polyisobutylene rubber, phenolic resin modified chloroprene rubber and 15 parts of xylene solution for 8min at normal temperature, wherein the stirring speed is 20r/min, then adding bisphenol A epoxy resin and 15 parts of xylene solution, and continuously stirring and mixing for 8min, wherein the stirring speed is 20r/min to obtain mixed diluent; mixing gamma-aminopropyltriethoxysilane and 10 parts of xylene solution at normal temperature to obtain a coupling agent diluent; mixing a formaldehyde polyamine modified waterproof curing agent and 10 parts of xylene solution at normal temperature to obtain an epoxy curing agent diluent; and adding the obtained diluent of the coupling agent into the obtained mixed diluent, stirring for 8min at normal temperature at the stirring speed of 40r/min, stirring uniformly, adding the obtained diluent of the epoxy curing agent, continuing stirring for 20min at the stirring speed of 40r/min, and stirring uniformly to obtain the special adhesive for connecting the fluoroplastic lining layer.
Example 2
The special adhesive for connecting the fluoroplastic lining layer comprises the following components in parts by weight: 30 parts of polyisobutylene rubber, 15 parts of phenolic resin modified chloroprene rubber, 70 parts of bisphenol A type epoxy resin, 1 part of gamma-aminopropyltriethoxysilane, 1 part of modified amine and 80 parts of xylene solution.
According to the weight parts, stirring and mixing polyisobutylene rubber, phenolic resin modified chloroprene rubber and 20 parts of xylene solution for 10min at normal temperature, wherein the stirring speed is 30r/min, then adding bisphenol A epoxy resin and 20 parts of xylene solution, and continuously stirring and mixing for 10min, wherein the stirring speed is 30r/min to obtain mixed diluent; mixing gamma-aminopropyltriethoxysilane and 20 parts of xylene solution at normal temperature to obtain a coupling agent diluent; mixing a formaldehyde polyamine modified waterproof curing agent and 20 parts of xylene solution at normal temperature to obtain an epoxy curing agent diluent; and adding the obtained coupling agent diluent into the obtained mixed diluent, stirring at the normal temperature for 10min at the stirring speed of 50r/min, after the mixture is uniform, adding the obtained epoxy curing agent diluent, continuously stirring for 30min at the stirring speed of 50r/min, and after the mixture is uniform, connecting the obtained fluoroplastic lining layer with the special adhesive.
Example 3
The special adhesive for connecting the fluoroplastic lining layer comprises the following components in parts by weight: 40 parts of polyisobutylene rubber, 20 parts of phenolic resin modified chloroprene rubber, 80 parts of bisphenol A type epoxy resin, 2 parts of gamma-aminopropyltriethoxysilane, 2 parts of modified amines and 100 parts of xylene solution.
According to the weight parts, stirring and mixing polyisobutylene rubber, phenolic resin modified chloroprene rubber and 25 parts of xylene solution at normal temperature for 12min at the stirring speed of 40r/min, adding bisphenol A epoxy resin and 25 parts of xylene solution, and continuously stirring and mixing for 12min at the stirring speed of 40r/min to obtain mixed diluent; mixing gamma-aminopropyltriethoxysilane and 25 parts of xylene solution at normal temperature to obtain a coupling agent diluent; mixing a formaldehyde polyamine modified waterproof curing agent and 25 parts of xylene solution at normal temperature to obtain an epoxy curing agent diluent; and adding the obtained diluent of the coupling agent into the obtained mixed diluent, stirring at the normal temperature for 12min at the stirring speed of 60r/min, stirring uniformly, adding the obtained diluent of the epoxy curing agent, stirring continuously for 40min at the stirring speed of 60r/min, and uniformly connecting the obtained fluoroplastic lining layer with the special adhesive.
Example 4
Compared with the example 2, the differences are that in the example 4, the nonpolar rubber is styrene-butadiene rubber, the polar rubber is chloroprene rubber, the epoxy resin is glycidyl ester epoxy resin, the epoxy curing agent is 650 low-molecular polyamide, the coupling agent is gamma- (2, 3-epoxypropoxy) propyl trimethoxy silane, the solvent is toluene solution, and the rest of the experimental conditions are the same as those in the example 2.
Comparative example 1
The difference from example 2 is that no polyisobutylene rubber is contained in comparative example 1 and the other experimental conditions are the same as in example 2.
Comparative example 2
The comparative example 2 is different from the example 2 in that the phenolic resin modified chloroprene rubber is not contained, and the other experimental conditions are the same as those of the example 2.
Comparative example 3
The difference from example 2 is that comparative example 3 does not contain polyisobutylene rubber and phenolic resin modified chloroprene rubber, and the other experimental conditions are the same as in example 2.
Comparative example 4
The difference from example 2 is that comparative example 4 does not contain bisphenol A type epoxy resin, and the other experimental conditions are the same as those of example 2.
Comparative example 5
Compared with the example 2, the difference is that the formaldehyde polyamine modified water-resistant curing agent is not contained in the comparative example 5, and the rest experimental conditions are the same as the example 2.
Comparative example 6
The experimental conditions were the same as in example 2 except that comparative example 6 contained no gamma-aminopropyltriethoxysilane.
The adhesives prepared in examples 1-4 and comparative examples 1-6 were tested for various properties, respectively, and the test results are shown in table 1.
TABLE 1
As can be seen from the data in table 1 and the data in combination with example 2 and comparative examples 1 to 6, compared with a simple rubber-type adhesive and an epoxy-type adhesive, the adhesive achieves a synergistic effect by combining the non-polar rubber, the polar rubber and the epoxy resin and under the action of the curing agent and the coupling agent, has a good heat-resistant effect, good toughness and good shear strength, and has good adhesive strength in normal temperature, high temperature and low temperature environments. The specific analysis is as follows: from the data of example 2 and comparative example 1, it can be analyzed that the addition of polyisobutylene rubber (non-polar rubber) can increase the toughness and shear strength of the adhesive to some extent, especially the low temperature resistance; the reason is that the nonpolar rubber has small cohesive energy and excellent cold resistance, can ensure good bonding performance at low temperature, and can be used as a toughening agent to improve the toughness, ductility and air tightness of the epoxy resin; the data of the embodiment 2 and the comparative example 2 can be analyzed, and the addition of the phenolic resin modified chloroprene rubber (polar rubber) can effectively improve the heat resistance effect, the high temperature resistance and the corresponding bonding strength of the adhesive, because the polar rubber can enhance the bonding strength between metals and has good cohesive force, thereby ensuring that good bonding is realized at a certain high temperature, and the weather resistance, the chemical resistance and the heat resistance of the adhesive are improved; the data of the embodiment 2 and the comparative example 4 can be analyzed to show that the addition of the bisphenol a epoxy resin (epoxy resin) can increase the high temperature resistance and the adhesive strength of the adhesive to a certain extent, because the epoxy resin can be subjected to a curing reaction with an epoxy curing agent, and molecules are cross-linked with each other to form a three-dimensional space network polymer with excellent structural stability and strength, so that the cured adhesive has excellent high temperature resistance, and the epoxy resin can be bonded with metal and non-metal materials and has good compatibility with rubber, thereby greatly increasing the adhesive force at the bonding interface and improving the adhesive strength.
Meanwhile, the data of the embodiment 2 and the comparative example 5 can be analyzed, and the addition of the curing agent can improve the bonding strength of the adhesive in a high-temperature environment to a certain extent, because the curing agent and the epoxy curing agent can be subjected to mutual crosslinking between curing reaction molecules to form a three-dimensional space reticular polymer with excellent structural stability and strength, so that the cured adhesive has excellent high-temperature resistance, and the epoxy resin can be used for bonding metal and non-metal materials and has good compatibility with rubber, thereby greatly increasing the bonding force at a bonding interface and improving the bonding strength.
In addition, as can be analyzed and found in example 2 and comparative example 5, the addition of γ -aminopropyltriethoxysilane (coupling agent) can increase the adhesive strength of the adhesive at normal temperature, high temperature and low temperature, because the molecules of the coupling agent contain active functional groups that can chemically react with the surface of the substrate (device) and active functional groups that can react with epoxy resin or three-dimensional space network polymer, so that the molecules of the coupling agent can play a role of "molecular bridge", thereby effectively improving the adhesive force between the adhesive and various substrates, i.e. effectively improving the adhesive strength of the adhesive.
Therefore, the application is realized through the combination of the non-polar rubber, the polar rubber and the epoxy resin, and under the action of the curing agent and the coupling agent, the synergistic effect is achieved, the obtained fluoroplastic lining layer is connected with the special adhesive, the high-low temperature resistance is realized, the bonding strength is high, the laminating degree of the fluoroplastic lining layer and various base materials is improved, the problems of falling off and swelling of the lining layer are effectively avoided, and the application environment and the field of fluoroplastic lining equipment are widened.
While the invention has been described with respect to a preferred embodiment, it will be understood by those skilled in the art that the foregoing and other changes, omissions and deviations in the form and detail thereof may be made without departing from the scope of this invention. Those skilled in the art can make various changes, modifications and equivalents to the disclosed technology without departing from the spirit and scope of the present invention, and all such changes, modifications and equivalents are intended to be included therein as equivalents of the present invention; meanwhile, any changes, modifications and variations of the above-described embodiments, which are equivalent to those of the technical spirit of the present invention, are within the scope of the technical solution of the present invention.
Claims (10)
1. The special adhesive for connecting the fluoroplastic lining layers is characterized by comprising the following components in parts by weight: 20 to 40 portions of non-polar rubber, 10 to 20 portions of polar rubber, 60 to 80 portions of epoxy resin, 0.02 to 2.0 portions of coupling agent, 0.05 to 2.0 portions of epoxy curing agent and 50 to 100 portions of solvent.
2. A fluoroplastic lined layer connection specific adhesive according to claim 1 wherein the non-polar rubber is at least one of polyisobutylene rubber, styrene butadiene rubber and butyl rubber.
3. A special adhesive for connecting fluoroplastic lining layers according to claim 1, wherein the polar rubber is at least one of phenolic resin modified chloroprene rubber, chloroprene rubber and nitrile rubber.
4. A special adhesive for bonding fluoroplastic lining layers according to claim 1 wherein said epoxy resin is at least one of bisphenol a type epoxy resin, glycidyl ester type epoxy resin, glycidyl amine type epoxy resin and alicyclic epoxy resin.
5. A special adhesive for bonding fluoroplastic lining layers according to claim 1 wherein the epoxy curing agent is at least one of modified amines, low molecular weight polyamides, dicyandiamide, hydrazides, amidines and boron trifluoride complexes.
6. A special adhesive for bonding fluoroplastic lining layers according to claim 1 wherein the coupling agent is at least one of gamma-aminopropyltriethoxysilane, gamma- (2, 3-glycidoxy) propyltrimethoxysilane, N-beta (aminoethyl) -gamma-aminopropyltrimethoxysilane, bis (dioctylpyrophosphate) ethylene titanate and isopropyltristearate titanate coupling agents.
7. The special adhesive for connecting fluoroplastic lining layers according to claim 1, wherein the solvent is one or more of toluene, xylene, ethyl acetate and butanone.
8. A process for preparing a special adhesive for bonding fluoroplastic lining layers according to any one of claims 1 to 7, comprising the steps of:
1) Stirring and mixing the nonpolar rubber, the polar rubber and the solvent, then adding the epoxy resin and the solvent, and continuously stirring and mixing to obtain a mixed diluent;
2) Mixing a coupling agent and a solvent to obtain a coupling agent diluent;
3) Mixing an epoxy curing agent and a solvent to obtain epoxy curing agent diluent;
4) Adding the coupling agent diluent obtained in the step 2) into the mixed diluent obtained in the step 1), stirring uniformly, then adding the epoxy curing agent diluent obtained in the step 3), and continuously stirring uniformly to obtain the special adhesive for connecting the fluoroplastic lining layer.
9. The method for preparing the special adhesive for connecting the fluoroplastic lining layers according to claim 8, wherein in the step 1), the stirring speed is 20-40r/min, the stirring temperature is normal temperature, the stirring and mixing time of the nonpolar rubber, the polar rubber and the solvent is 8-12min, and the continuous stirring time is 8-12min; in the step 4), the stirring speed is 40-60r/min, the coupling agent diluent is added into the mixed diluent, the stirring time is 8-12min, and the stirring time is continued for 20-40min.
10. A method for preparing special adhesive for connecting fluoroplastic lining layers according to claim 8, wherein the viscosity of the special adhesive for connecting fluoroplastic lining layers is 22000 cps to 24000cps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210851386.1A CN115197667A (en) | 2022-07-19 | 2022-07-19 | Special adhesive for connecting fluoroplastic lining layers and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210851386.1A CN115197667A (en) | 2022-07-19 | 2022-07-19 | Special adhesive for connecting fluoroplastic lining layers and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115197667A true CN115197667A (en) | 2022-10-18 |
Family
ID=83581519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210851386.1A Pending CN115197667A (en) | 2022-07-19 | 2022-07-19 | Special adhesive for connecting fluoroplastic lining layers and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115197667A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59172579A (en) * | 1983-03-18 | 1984-09-29 | Tokyo Gas Co Ltd | Composition for sealing and lining joints in piping |
| KR20040036218A (en) * | 2002-10-24 | 2004-04-30 | 주식회사 엘지화학 | Epoxy/thermoplastic blend composition |
| CN104371568A (en) * | 2014-10-30 | 2015-02-25 | 田琳琳 | Waterproof sealant |
| CN104962213A (en) * | 2015-07-23 | 2015-10-07 | 北京龙苑伟业新材料有限公司 | Low-density high-strength reinforced rubber sheet convenient for low-temperature construction and preparation method thereof |
| CN105175816A (en) * | 2015-09-09 | 2015-12-23 | 北京龙苑伟业新材料有限公司 | High-strength low-hardness damping rubber and preparation method thereof |
| CN105542695A (en) * | 2016-02-02 | 2016-05-04 | 江苏同盟汽车零部件实业有限公司 | High-damping reinforcing rubber sheet and preparation method thereof |
| US20180194978A1 (en) * | 2015-06-29 | 2018-07-12 | Tesa Se | Adhesive composition, in particular for encapsulating an electronic arrangement |
| CN110511707A (en) * | 2019-08-08 | 2019-11-29 | 西安航天三沃化学有限公司 | A kind of epoxy adhesive and apply and methods for using them |
-
2022
- 2022-07-19 CN CN202210851386.1A patent/CN115197667A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59172579A (en) * | 1983-03-18 | 1984-09-29 | Tokyo Gas Co Ltd | Composition for sealing and lining joints in piping |
| KR20040036218A (en) * | 2002-10-24 | 2004-04-30 | 주식회사 엘지화학 | Epoxy/thermoplastic blend composition |
| CN104371568A (en) * | 2014-10-30 | 2015-02-25 | 田琳琳 | Waterproof sealant |
| US20180194978A1 (en) * | 2015-06-29 | 2018-07-12 | Tesa Se | Adhesive composition, in particular for encapsulating an electronic arrangement |
| CN104962213A (en) * | 2015-07-23 | 2015-10-07 | 北京龙苑伟业新材料有限公司 | Low-density high-strength reinforced rubber sheet convenient for low-temperature construction and preparation method thereof |
| CN105175816A (en) * | 2015-09-09 | 2015-12-23 | 北京龙苑伟业新材料有限公司 | High-strength low-hardness damping rubber and preparation method thereof |
| CN105542695A (en) * | 2016-02-02 | 2016-05-04 | 江苏同盟汽车零部件实业有限公司 | High-damping reinforcing rubber sheet and preparation method thereof |
| CN110511707A (en) * | 2019-08-08 | 2019-11-29 | 西安航天三沃化学有限公司 | A kind of epoxy adhesive and apply and methods for using them |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11008487B2 (en) | Thermoset adhesive, automotive component using thermoset adhesive, and method of manufacturing same | |
| JP4242771B2 (en) | Heat resistant epoxy adhesive film | |
| CA2854825C (en) | Structural adhesive and bonding application thereof | |
| JP2002526618A (en) | Impact resistant epoxy resin composition | |
| US10435600B2 (en) | Epoxy resin compositions for pre-gel ovens | |
| KR20170088896A (en) | Epoxy adhesive, automotive member, and method for manufacturing same | |
| CN112646523A (en) | High-performance medium-temperature curing single-component epoxy structural adhesive and preparation method thereof | |
| JPH05320610A (en) | Adhesive composition, production of adhesive film therefrom, and connection of electrode and metal foil with adhesive prepared using the same | |
| CN1919900A (en) | Preparation method of anisotropic conductive rubber film | |
| CN112646524A (en) | Single-component epoxy adhesive for bonding self-lubricating steel plates and preparation method thereof | |
| EP0726928A1 (en) | Anticorrosion adhesive composition and method | |
| CN114015371B (en) | Insulating adhesive tape | |
| CN113322027B (en) | Epoxy modified chlorinated polypropylene adhesive | |
| CN115197667A (en) | Special adhesive for connecting fluoroplastic lining layers and preparation method thereof | |
| Bhuniya et al. | Phosphorus based epoxy terminated structural adhesive 2. Curing, adhesive strength and thermal stability | |
| CN111040692A (en) | High-elasticity high-elongation epoxy adhesive special for PVC bonding | |
| TW202116890A (en) | Composition and application of epoxy resin for prepreg | |
| JP2001220556A (en) | Adhesive film, its manufacturing method, printing wiring board for boarding semiconductor and semiconductor unit | |
| JPH08323916A (en) | Copper clad resin composite material | |
| CN116751533B (en) | Non-post-curing epoxy adhesive tape and preparation method thereof | |
| US11873422B2 (en) | Adhesive composition | |
| JPS63227686A (en) | Adhesive composition of sheet form | |
| JP2000188451A (en) | Flexible printed wiring board, cover lay film and adhesive composition | |
| JPS60130666A (en) | Adhesive composition for flexible printed wiring board | |
| CN113980243A (en) | Polyfunctional epoxy resin and preparation method thereof |
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 |