CN111100462A - Carbon dioxide gas shielded welding gun nozzle glass fiber insulating part - Google Patents
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- CN111100462A CN111100462A CN201911425497.0A CN201911425497A CN111100462A CN 111100462 A CN111100462 A CN 111100462A CN 201911425497 A CN201911425497 A CN 201911425497A CN 111100462 A CN111100462 A CN 111100462A
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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
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/24—Features related to electrodes
- B23K9/26—Accessories for electrodes, e.g. ignition tips
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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
- C08K3/38—Boron-containing compounds
- C08K2003/382—Boron-containing compounds and nitrogen
- C08K2003/385—Binary compounds of nitrogen with boron
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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
- C08K2201/002—Physical properties
- C08K2201/006—Additives being defined by their surface area
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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
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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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
- C08L2203/00—Applications
- C08L2203/18—Applications used for pipes
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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
- C08L2312/00—Crosslinking
Abstract
The invention discloses a carbon dioxide gas shielded welding gun nozzle glass fiber insulating part, which has the technical key points that: the raw materials comprise the following components in parts by weight: 50-70 parts of alkali-free glass fiber, 28-35 parts of silicon resin, 1-3 parts of KP-1 daub, 2-5 parts of silicon dioxide aerogel, 1-4 parts of quartz powder, 2-8 parts of curing agent, 2-8 parts of diluent and 2-8 parts of reinforcing agent. The invention ensures that the prepared pipe fitting has excellent mechanical property, good high temperature resistance and insulating property, and is suitable for being used as a welding gun nozzle insulating part.
Description
Technical Field
The invention relates to the field of welding gun devices, in particular to a carbon dioxide gas shielded welding gun nozzle glass fiber insulating part.
Background
Carbon dioxide gas shielded welding is one of welding methods, and is a method for welding by using carbon dioxide gas as shielding gas.
The welding gun is a part for executing welding operation in the welding process, is a tool for gas welding, is shaped like a gun, is provided with a nozzle at the front end, and sprays high-temperature flame as a heat source; meanwhile, an insulating sleeve is usually arranged in the welding gun to improve the use safety of the welding gun, and the insulating sleeve material must have good mechanical property, high temperature resistance and electrical property in response to the use environment of the welding gun, so that the glass fiber tube is gradually used for preparing a gun nozzle insulating part by virtue of the advantages of excellent high temperature resistance, mechanical property and the like.
The prior application publication No. CN103724943A discloses a glue solution for winding a glass fiber tube, which is prepared from the following raw materials in parts by weight: 80-100 parts of epoxy resin, 65-82 parts of methyl tetrahydrophthalic anhydride, 1.4-1.8 parts of quaternary ammonium salt, 0.04-0.05 part of phthalocyanine blue, 0.17-0.22 part of wetting agent, 0.02-0.03 part of nano fumed silica and 0.04-0.05 part of organopolysiloxane.
The invention also aims to provide a glass fiber tube and glue, so that the prepared tube has excellent mechanical properties, good high temperature resistance and good insulating property, and is suitable for being used as a welding gun nozzle insulating part.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a carbon dioxide gas shielded welding gun nozzle glass fiber insulating part which has excellent mechanical property, high temperature resistance and electrical property.
In order to achieve the purpose, the invention provides the following technical scheme:
the carbon dioxide gas shielded welding gun nozzle glass fiber insulating part comprises the following raw materials in parts by weight: 50-70 parts of alkali-free glass fiber, 28-35 parts of silicon resin, 1-3 parts of KP-1 daub, 2-5 parts of silicon dioxide aerogel, 1-4 parts of quartz powder, 2-8 parts of curing agent, 2-8 parts of diluent and 2-8 parts of reinforcing agent.
By adopting the technical scheme, the alkali-free glass fiber is used as the base material of the insulating part, firstly, the alkali-free glass fiber has excellent mechanical properties which are mainly reflected in high tensile strength and good rigidity, and the alkali-free glass fiber also has excellent high temperature resistance, and meanwhile, the alkali-free glass fiber has good insulating property due to low alkali metal content, so that the basic performance requirements of the insulating part can be met; the silicon resin, KP-1 daub, 2-5 parts of silicon dioxide aerogel, curing agent, diluent and reinforcing agent are used as the components of the glue coating, so that the tube forming and performance enhancement of the alkali-free glass fiber can be promoted;
the silicone resin is taken as polyorganosiloxane with a highly crosslinked reticular structure, has the dual characteristics of organic resin and inorganic material, has good toughness and strength, can make up the defects of poor toughness and brittleness of the alkali-free glass fiber while improving the mechanical property of the insulating part, has good bonding property to the alkali-free glass fiber, and can promote the alkali-free glass fiber to be molded into a tube after being cured;
meanwhile, because the carbon dioxide is used as the shielding gas in the carbon dioxide arc welding, the carbon dioxide belongs to the acid gas, and the acid resistance of the alkali-free glass fiber is poor, because the KP-1 daub is added in the invention, the KP-1 daub takes potash water glass as a binder, phosphate as a curing agent, and an anticorrosive material formed by combining various acid-resistant materials has excellent acid corrosion resistance, the KP-1 daub is mixed in the glue to cover the surface of the insulating part, so that the acid corrosion of the insulating part caused by the carbon dioxide can be well prevented, meanwhile, the KP-1 daub has good high temperature resistance, can be well matched with the insulating part to work, the bonding performance of the KP-1 daub is also very excellent, the compactness of the insulating part can be improved, and the mechanical performance of the insulating part can be improved;
the surfaces of the silica aerogel and the quartz powder are provided with silanol groups, and the silanol groups can react with hydroxyl groups in the alkali-free glass fiber irreversibly to form chemical bonds, so that the bonding capacity of the alkali-free glass fiber and the glue is improved through a crosslinking effect, and the quartz powder and the silica aerogel also have good strength, wear resistance and high temperature resistance, so that the use performance of the insulating part can be further improved;
the curing agent, the diluent and the reinforcing agent are mainly used as functional additives in the production process of the insulating part, the curing time of gluing and alkali-free glass fiber can be shortened and the curing temperature of the gluing and alkali-free glass fiber can be reduced due to the addition of the curing agent, the gluing viscosity can be reduced due to the addition of the diluent, so that the gluing can be more uniformly coated on the surface of the alkali-free glass fiber, the mechanical strength of the insulating part is improved due to the addition of the reinforcing agent, the highest tolerance temperature in the processing process of the insulating part can be improved, the curing temperature and the curing time in the processing process of the insulating part can be relatively improved, and the mechanical property of the insulating part is further improved.
The invention is further set up in that the silicone resin comprises the following components in parts by weight: 20-35 parts of methyl phenyl silicone resin and 26-36 parts of methyl MQ silicone resin.
By adopting the technical scheme, the methyl phenyl silicone resin is taken as a silicone resin, the methyl phenyl silicone resin has good flexibility due to the introduction of a phenyl group with large steric hindrance, and the methyl MQ silicone resin is a silicone resin consisting of four-functionality siloxane condensation chain links (Q) and single-functionality siloxane chain links (M).
The invention is further provided that the curing agent comprises the following components in parts by weight: 15-23 parts of hexamethyldisilazane and 10-22 parts of ethyl orthosilicate.
By adopting the technical scheme, a silicon-nitrogen bond in hexamethyldisilazane can react with a silicon hydroxyl group in silicon resin, and ammonia is replaced to form a Si-O-Si chain, so that the silicon resin is promoted to be cured; the addition of the ethyl orthosilicate reduces the curing temperature required by the silicone resin and improves the curing efficiency of the silicone resin.
The invention is further provided that the diluent comprises the following components in parts by weight: 15-20 parts of talcum powder and 20-35 parts of methyl ethyl ketone.
By adopting the technical scheme, the main component of the talcum powder is the hydrous magnesium silicate, the talcum powder has good chemical inertia, the processing of the insulating part cannot be influenced, the talcum powder has good lubricity, and the viscosity of glue coating can be reduced, so that the glue coating can be uniformly coated on the surface of the alkali-free glass fiber, the talcum powder has excellent fire resistance, acid resistance and insulativity, and the service performance of the insulating part can be further improved; methyl ethyl ketone is used as an excellent organic solvent, has stable chemical property, and can promote the fusion of components in the glue coating, thereby improving the uniformity of the glue coating on the surface of the alkali-free glass fiber.
The invention is further provided that the reinforcing agent comprises the following components in parts by weight: 20-36 parts of carbon fiber powder and 15-26 parts of boron nitride.
By adopting the technical scheme, the carbon fiber powder is easy to be wetted by resin and uniformly dispersed, can be well dispersed in the glue, and has excellent hardness, cracking property and wear resistance, so that the mechanical property of the insulating part can be well improved by adding the carbon fiber powder; the boron nitride is added as a high-temperature resistant material, so that the tolerance temperature in the gluing and curing process can be increased, the curing temperature and the curing time can be relatively increased in the heating and curing process of the insulating part, the mechanical property of the finished insulating part is improved, and the boron nitride has certain lubricating property and can be well and uniformly dispersed in a gluing system.
The invention is further set that the specific surface area of the silica aerogel is 400-600 square meters per gram, and the density of the silica aerogel is 40-60kg/m3The particle size of the quartz powder is 200-300 meshes.
By adopting the technical scheme, the silicon dioxide aerogel and the quartz powder are physically refined, so that the silicon dioxide aerogel and the quartz powder can be more uniformly mixed in a gluing system, and the service performance of the insulating part is further improved.
The invention is further configured that the raw materials of the carbon dioxide gas shielded welding gun nozzle glass fiber insulating part comprise the following components in parts by weight: 56 parts of alkali-free glass fiber, 30 parts of silicone resin, 2 parts of KP-1 daub, 470 square meters per gram of specific surface area and 52kg/m of density33 parts of silicon dioxide aerogel, 230 parts of target quartz powder, 5 parts of curing agent, 4 parts of diluent and 6 parts of reinforcing agent;
the silicone resin comprises the following components in parts by weight: 25 parts of methyl phenyl silicone resin and 33 parts of methyl MQ silicone resin;
the curing agent comprises the following components in parts by weight: 16 parts of hexamethyldisilazane and 20 parts of ethyl orthosilicate; the diluent comprises the following components in parts by weight: 17 parts of talcum powder and 32 parts of methyl ethyl ketone;
the reinforcing agent comprises the following components in parts by weight: 26 parts of carbon fiber powder and 17 parts of boron nitride.
By adopting the technical scheme, the raw material group content of the insulating part is further refined, so that the components can reach the optimal proportion, and the service performance of the insulating part is comprehensively improved.
The invention is further configured that the preparation method of the carbon dioxide gas shielded welding gun nozzle glass fiber insulating part comprises the following steps:
(1) weaving alkali-free glass fibers into glass fiber cloth with the thickness of 10-13 threads;
(2) mixing silicon resin, KP-1 daub, silicon dioxide aerogel, quartz powder, a curing agent, a diluent and a reinforcing agent at the temperature of 45 +/-5 ℃ and the rotating speed of 700 plus and minus 800 revolutions per minute to obtain glue;
(3) coating the glue on the surface of the glass fiber cloth, and air-drying for 12 +/-2 min to obtain the prefabricated cloth with 14-16 threads;
(4) winding the prefabricated cloth on the outer peripheral wall of the model tube, and then wrapping an aluminum tape on the outermost side of the prefabricated cloth to obtain a prefabricated model tube;
(5) and (3) placing the prefabricated mould pipe at the temperature of 260 +/-5 ℃, heating and curing for 15 +/-1 hours, cooling to 90 +/-5 ℃, removing the aluminum strip and the mould pipe, and cutting to obtain the insulating pipe fitting.
By adopting the technical scheme, the volume of the insulating part of the gun nozzle is smaller, so that the alkali-free glass fiber is woven into the glass fiber cloth in advance, and the simplicity and convenience of the preparation process can be improved; after the glue is coated on the glass fiber cloth, the glass fiber cloth is dried in the air, so that the glue does not flow randomly but still has certain viscosity on the glass fiber cloth, the phenomenon of layering of the prefabricated cloth in the winding process on a model pipe can be avoided, the problem of glue pressurization loss can be avoided, and the loss of the glue in the heating and curing process can be avoided due to the arrangement of the aluminum tape, so that the glass fiber insulating part with excellent mechanical property, high temperature resistance and electrical property can be conveniently prepared.
In conclusion, the invention has the following beneficial effects:
1. according to the invention, the methyl phenyl silicone resin and the methyl MQ silicone resin are used as the basic silicone resin, and the hardness of the methyl MQ silicone resin and the flexibility of the methyl phenyl silicone resin are mutually matched, so that the strength and toughness of the insulating part can be further improved by the silicone resin, and the service performance of the insulating part is improved;
2. in the invention, KP-1 daub is mixed in glue to cover the surface of the insulating part, so that the acid corrosion of carbon dioxide to the insulating part can be well prevented, and meanwhile, the KP-1 daub has good high temperature resistance and can be well matched with the insulating part to work, the bonding property of the KP-1 daub is also very excellent, the compactness of the insulating part can be improved, and the mechanical property of the insulating part can be improved;
3. according to the invention, the silica aerogel and the quartz powder can improve the bonding capacity of the alkali-free glass fiber and the glue through the cross-linking effect, and the quartz powder and the silica aerogel also have good strength, wear resistance and high temperature resistance, so that the service performance of the insulating part can be further improved;
4. according to the invention, by adding the curing agent, the diluent and the reinforcing agent, the curing time of gluing and alkali-free glass fiber can be shortened and the curing temperature of gluing and alkali-free glass fiber can be reduced due to the addition of the curing agent, the viscosity of gluing can be reduced due to the addition of the diluent, so that the gluing can be more uniformly coated on the surface of the alkali-free glass fiber, the mechanical strength of the insulating part is improved, and the highest tolerance temperature in the processing process of the insulating part can be improved at the same time, so that the curing temperature and the curing time in the processing process of the insulating part can be relatively improved, and the mechanical property of the insulating part is further improved, therefore, the prepared pipe fitting has excellent mechanical property, good high temperature resistance and insulating property, and is suitable for being used as a welding gun nozzle insulating part;
5. in the preparation process of the insulating part, the alkali-free glass fiber is woven into the glass fiber cloth in advance, so that the simplicity and convenience of the preparation process can be improved; meanwhile, through the steps of air drying and aluminum tape winding, the gluing loss can be effectively prevented, so that the glass fiber insulating part with excellent mechanical property, high temperature resistance and electrical property can be conveniently prepared.
Detailed Description
The present invention will be described in further detail with reference to examples.
The first embodiment is as follows:
the carbon dioxide gas shielded welding gun nozzle glass fiber insulating part comprises the following raw materials in parts by weight: 50 parts of alkali-free glass fiber, 28 parts of silicone resin, 1 part of KP-1 daub, 400 square meters per gram of specific surface area and 42kg/m of density32 parts of silicon dioxide aerogel, 1 part of 200-mesh quartz powder, 3 parts of curing agent, 3 parts of diluent and 4 parts of reinforcing agent.
Wherein:
the silicone resin comprises the following components in parts by weight: 22 parts of methyl phenyl silicone resin and 26 parts of methyl MQ silicone resin.
The curing agent comprises the following components in parts by weight: 16 parts of hexamethyldisilazane and 11 parts of ethyl orthosilicate.
The diluent comprises the following components in parts by weight: 16 parts of talcum powder and 20 parts of methyl ethyl ketone.
The reinforcing agent comprises the following components in parts by weight: 23 parts of carbon fiber powder and 15 parts of boron nitride.
Example two:
the carbon dioxide gas shielded welding gun nozzle glass fiber insulating part comprises the following raw materials in parts by weight: 55 parts of alkali-free glass fiber, Silicones30 portions of fat, 3 portions of KP-1 daub, the specific surface area of 520 square meters per gram and the density of 45kg/m33 parts of silicon dioxide aerogel, 3 parts of 230-mesh quartz powder, 2 parts of curing agent, 2 parts of diluent and 2 parts of reinforcing agent.
Wherein:
the silicone resin comprises the following components in parts by weight: 20 parts of methyl phenyl silicone resin and 30 parts of methyl MQ silicone resin.
The curing agent comprises the following components in parts by weight: 15 parts of hexamethyldisilazane and 10 parts of ethyl orthosilicate.
The diluent comprises the following components in parts by weight: 15 parts of talcum powder and 23 parts of methyl ethyl ketone.
The reinforcing agent comprises the following components in parts by weight: 20 parts of carbon fiber powder and 17 parts of boron nitride.
Example three:
the carbon dioxide gas shielded welding gun nozzle glass fiber insulating part comprises the following raw materials in parts by weight: 56 parts of alkali-free glass fiber, 30 parts of silicone resin, 2 parts of KP-1 daub, 470 square meters per gram of specific surface area and 52kg/m of density33 parts of silicon dioxide aerogel, 230 parts of target quartz powder, 5 parts of curing agent, 4 parts of diluent and 6 parts of reinforcing agent;
wherein:
the silicone resin comprises the following components in parts by weight: 25 parts of methyl phenyl silicone resin and 33 parts of methyl MQ silicone resin;
the curing agent comprises the following components in parts by weight: 16 parts of hexamethyldisilazane and 20 parts of ethyl orthosilicate; the diluent comprises the following components in parts by weight: 17 parts of talcum powder and 32 parts of methyl ethyl ketone;
the reinforcing agent comprises the following components in parts by weight: 26 parts of carbon fiber powder and 17 parts of boron nitride.
Example four: the carbon dioxide gas shielded welding gun nozzle glass fiber insulating part comprises the following raw materials in parts by weight: 70 parts of alkali-free glass fiber, 33 parts of silicone resin, 2 parts of KP-1 daub, 600 square meters in specific surface area and 60kg/m in density35 parts of silicon dioxide aerogel, 3 parts of 300-mesh quartz powder, 8 parts of curing agent, 7 parts of diluent and 6 parts of reinforcing agent.
Wherein:
the silicone resin comprises the following components in parts by weight: 33 parts of methyl phenyl silicone resin and 35 parts of methyl MQ silicone resin.
The curing agent comprises the following components in parts by weight: 23 parts of hexamethyldisilazane and 21 parts of ethyl orthosilicate.
The diluent comprises the following components in parts by weight: 20 parts of talcum powder and 32 parts of methyl ethyl ketone.
The reinforcing agent comprises the following components in parts by weight: 33 parts of carbon fiber powder and 25 parts of boron nitride.
Example five:
the carbon dioxide gas shielded welding gun nozzle glass fiber insulating part comprises the following raw materials in parts by weight: 68 parts of alkali-free glass fiber, 35 parts of silicone resin, 3 parts of KP-1 daub, 580 square meters of specific surface area and 57kg/m of density34 parts of silica aerogel, 4 parts of 290-mesh quartz powder, 7 parts of curing agent, 8 parts of diluent and 8 parts of reinforcing agent.
Wherein:
the silicone resin comprises the following components in parts by weight: 35 parts of methyl phenyl silicone resin and 36 parts of methyl MQ silicone resin.
The curing agent comprises the following components in parts by weight: 22 parts of hexamethyldisilazane and 22 parts of ethyl orthosilicate.
The diluent comprises the following components in parts by weight: 18 parts of talcum powder and 35 parts of methyl ethyl ketone.
The reinforcing agent comprises the following components in parts by weight: 36 parts of carbon fiber powder and 26 parts of boron nitride.
Example six:
a carbon dioxide gas shielded welding gun nozzle glass fiber insulating part is prepared by the following steps:
(1) weaving the alkali-free glass fiber into 10-13-filament (preferably 10) -thick glass fiber cloth;
(2) mixing silicon resin, KP-1 daub, silicon dioxide aerogel, quartz powder, a curing agent, a diluent and a reinforcing agent at the temperature of 45 +/-5 ℃ (preferably 50) and the rotating speed of 700-;
(3) coating the glue on the surface of glass fiber cloth, and air-drying for 12 +/-2 min (preferably 10) to obtain prefabricated cloth with 14-16 filaments (preferably 14);
(4) winding the prefabricated cloth on the outer peripheral wall of the model tube for 10 circles, and then wrapping the outermost side of the prefabricated cloth with an aluminum tape to obtain a prefabricated model tube;
and (3) placing the prefabricated molded pipe at the temperature of 260 +/-5 ℃ (preferably 265), heating and curing for 15 +/-1 (preferably 16) hours, cooling to 90 +/-5 ℃ (preferably 95), removing the aluminum belt and the molded pipe, and cutting to obtain the insulating pipe fitting.
Comparative example one:
the air drying step was reduced compared to example six.
Comparative example two:
the aluminum tape winding step was reduced compared to example six.
Comparative example three:
the procedure was as in example six, with the replacement of the methylphenyl silicone resin by an equivalent amount of methyl MQ silicone resin, compared to example one.
Comparative example four:
compared to example one, the methyl MQ silicone resin was exchanged for an equal amount of methylphenyl silicone resin, the preparation procedure being referred to example six.
Comparative example five:
in comparison to example one, no KP-1 cement was added and the preparation procedure was as per example six.
Comparative example six:
in contrast to example one, no silica aerogel and no quartz powder were added and the preparation steps were as in example six.
Comparative example seven:
in contrast to example one, the procedure is referred to example six without addition of reinforcing agents.
Comparative example eight:
compared with the first embodiment, no reinforcing agent is added, and compared with the sixth embodiment, the curing temperature is 230 ℃, and the curing time is 3 h.
And (3) performance detection:
the invention refers to corresponding comparative examples and examples, a sample with an inner diameter of 16mm is prepared, and the sample is subjected to related performance detection:
(1) samples were prepared according to the method of example six and the results are given in the following table:
TABLE 1
TABLE 2
(2) The samples of example one were prepared according to the methods of comparative example one, comparative example two and comparative example eight, and the test results are as follows:
TABLE 3
According to the detection result, the corrosion resistance of the insulating part can be improved by adding the KP-1 daub, and the toughness and the strength of the insulating part can be improved by adding the methyl phenyl silicone resin and the methyl MQ silicone resin in proportion; the silica aerogel and the quartz powder can effectively improve the crack resistance of the insulating part, and the additives such as the reinforcing agent and the like can strengthen the curing environment of the insulating part so as to improve the comprehensive performance of the insulating part, so that the high-temperature-resistant quartz powder has excellent mechanical properties, good high-temperature resistance and insulating property, and is suitable for being used for welding gun nozzle insulating parts.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Claims (8)
1. The utility model provides a carbon dioxide gas shielded welding gun mouth glass fiber insulating part which characterized in that raw materials include according to part by weight: 50-70 parts of alkali-free glass fiber, 28-35 parts of silicon resin, 1-3 parts of KP-1 daub, 2-5 parts of silicon dioxide aerogel, 1-4 parts of quartz powder, 2-8 parts of curing agent, 2-8 parts of diluent and 2-8 parts of reinforcing agent.
2. The carbon dioxide gas shielded welding gun nozzle glass fiber insulator of claim 1, wherein: the silicone resin comprises the following components in parts by weight: 20-35 parts of methyl phenyl silicone resin and 26-36 parts of methyl MQ silicone resin.
3. The carbon dioxide gas shielded welding gun nozzle glass fiber insulator of claim 2, wherein: the curing agent comprises the following components in parts by weight: 15-23 parts of hexamethyldisilazane and 10-22 parts of ethyl orthosilicate.
4. The carbon dioxide gas shielded welding gun nozzle glass fiber insulator of claim 3, wherein: the diluent comprises the following components in parts by weight: 15-20 parts of talcum powder and 20-35 parts of methyl ethyl ketone.
5. The carbon dioxide gas shielded welding gun nozzle glass fiber insulator of claim 4, wherein: the reinforcing agent comprises the following components in parts by weight: 20-36 parts of carbon fiber powder and 15-26 parts of boron nitride.
6. The carbon dioxide gas shielded welding gun nozzle glass fiber insulator of claim 5, wherein: the specific surface area of the silica aerogel is 400-600 square meters per gram, the density of the silica aerogel is 40-60kg/m through cultivation, and the particle size of the quartz powder is 200-300 meshes.
7. The carbon dioxide gas shielded welding gun nozzle glass fiber insulation member according to claim 1, characterized in that the raw materials comprise the following components in parts by weight: 56 parts of alkali-free glass fiber, 30 parts of silicone resin, 2 parts of KP-1 daub, 3 parts and 230 parts of silica aerogel with the specific surface area of 470 square meters per gram and the density of 52kg/m for carrying out heavy planting, 2 parts of target quartz powder, 5 parts of curing agent, 4 parts of diluent and 6 parts of reinforcing agent;
the silicone resin comprises the following components in parts by weight: 25 parts of methyl phenyl silicone resin and 33 parts of methyl MQ silicone resin;
the curing agent comprises the following components in parts by weight: 16 parts of hexamethyldisilazane and 20 parts of ethyl orthosilicate;
the diluent comprises the following components in parts by weight: 17 parts of talcum powder and 32 parts of methyl ethyl ketone;
the reinforcing agent comprises the following components in parts by weight: 26 parts of carbon fiber powder and 17 parts of boron nitride.
8. The carbon dioxide gas shielded welding gun nozzle glass fiber insulator of claim 1, wherein the preparation method comprises the following steps:
weaving alkali-free glass fibers into glass fiber cloth with the thickness of 10-13 threads;
mixing silicon resin, KP-1 daub, silicon dioxide aerogel, quartz powder, a curing agent, a diluent and a reinforcing agent at the temperature of 45 +/-5 ℃ and the rotating speed of 700 plus and minus 800 revolutions per minute to obtain glue;
coating the glue on the surface of the glass fiber cloth, and air-drying for 12 +/-2 min to obtain the prefabricated cloth with 14-16 threads;
winding the prefabricated cloth on the outer peripheral wall of the model tube, and then wrapping an aluminum tape on the outermost side of the prefabricated cloth to obtain a prefabricated model tube;
and (3) placing the prefabricated mould pipe at the temperature of 260 +/-5 ℃, heating and curing for 15 +/-1 hours, cooling to 90 +/-5 ℃, removing the aluminum strip and the mould pipe, and cutting to obtain the insulating pipe fitting.
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| CN201911425497.0A CN111100462A (en) | 2019-12-31 | 2019-12-31 | Carbon dioxide gas shielded welding gun nozzle glass fiber insulating part |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113416416A (en) * | 2021-08-09 | 2021-09-21 | 常州市巨洋机电有限公司 | High-temperature-resistant and high-hydrophobicity glass fiber insulating pipe and manufacturing method thereof |
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| CN116218363B (en) * | 2023-03-31 | 2024-03-08 | 无锡兴华衡辉科技有限公司 | Protective slurry and preparation method thereof, protective sleeve containing protective slurry and preparation method thereof and application of protective sleeve in laser welding of stainless steel |
| CN116118167A (en) * | 2023-04-17 | 2023-05-16 | 常州特尔玛科技股份有限公司 | Production line for preparing welding gun insulating blank pipe and production method thereof |
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