CN108641626A - A kind of white body special (purpose) rubber type sealant for spot welding and preparation method thereof - Google Patents

A kind of white body special (purpose) rubber type sealant for spot welding and preparation method thereof Download PDF

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Publication number
CN108641626A
CN108641626A CN201810600402.3A CN201810600402A CN108641626A CN 108641626 A CN108641626 A CN 108641626A CN 201810600402 A CN201810600402 A CN 201810600402A CN 108641626 A CN108641626 A CN 108641626A
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rubber
spot welding
type sealant
mixing
calcium carbonate
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于虎
杨士勇
韩永德
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JINAN HANSIMAN TIMES TECHNOLOGY Co Ltd
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JINAN HANSIMAN TIMES TECHNOLOGY Co Ltd
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Priority to CN201810600402.3A priority Critical patent/CN108641626A/en
Publication of CN108641626A publication Critical patent/CN108641626A/en
Priority to CN201910419421.0A priority patent/CN110643306B/en
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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
    • C09J109/00—Adhesives based on homopolymers or copolymers of conjugated diene hydrocarbons
    • 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
    • C09J109/00—Adhesives based on homopolymers or copolymers of conjugated diene hydrocarbons
    • C09J109/06—Copolymers with styrene
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/02—Non-macromolecular additives
    • C09J11/04—Non-macromolecular additives inorganic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/02—Non-macromolecular additives
    • C09J11/06—Non-macromolecular additives organic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/08—Macromolecular additives
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K3/00—Materials not provided for elsewhere
    • C09K3/10—Materials in mouldable or extrudable form for sealing or packing joints or covers
    • 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
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2237—Oxides; Hydroxides of metals of titanium
    • C08K2003/2241—Titanium dioxide
    • 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
    • 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
    • C08K2201/011—Nanostructured additives
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/02—Flame or fire retardant/resistant
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/22—Halogen free composition
    • 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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K3/00—Materials not provided for elsewhere
    • C09K3/10—Materials in mouldable or extrudable form for sealing or packing joints or covers
    • C09K2003/1034—Materials or components characterised by specific properties
    • C09K2003/1078—Fire-resistant, heat-resistant materials

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Sealing Material Composition (AREA)

Abstract

The present invention relates to a kind of white body special (purpose) rubber type sealant for spot welding, by weight score meters, including following component：Mixing rubber 45~55%, titanium dioxide 4.5~5.5%, powdered whiting 18~22%, nano-calcium carbonate 9~11%, vulcanizer 0.27~0.33%, diluent 2.7~3.3%, vulcanization accelerator 0.27~0.33%, tackifier 2.7~3.3%, liquid flame retardant 3.6~4.4%, conductive black 4.0~5.5%；Mixing rubber score meter by weight, including following component：Butadiene rubber 12.6~15.4%, nitrile rubber 12.6~15.4%, butadiene-styrene rubber 25.2~30.8%, liquid polybutadiene 27~33%, powdered whiting 4.5~5.5%, conventional lightweight calcium carbonate 4.5~5.5%, anti-aging agent 3.8~4.4%.

Description

A kind of white body special (purpose) rubber type sealant for spot welding and preparation method thereof
Technical field
The present invention relates to a kind of sealant for spot welding and preparation method thereof more particularly to a kind of white body special (purpose) rubber type spot welding Fluid sealant and preparation method thereof belongs to the formula and preparation method technical field of fluid sealant.
Background technology
The main function of automobile spot welding glue is the stress around sealing, damping and discrete welding points, to reach dust-proof, anti- Water, anti-corrosion, damping effect, to extend the service life of automobile, it is mainly used on automotive welding production line, in automobile The parts junction being made of steel plate is coated with antirust sealant for spot welding in advance before car body coating processing, is carried out again after overlapping Spot welding, then with vehicle body together after the treatment process such as degreasing, washing, phosphatization, electrophoresis, then the baking-curing together with electrophoretic paint.
From 1 day October in 2013, country《Automobile three guarantees provide》Implement, to vehicle anti-corrosion, more stringent requirements are proposed, The anti-corrosion of two pieces of steel plate overlapping parts is concerned in middle solder joint anti-corrosion and welding surface, solder joint and steel plate overlapped two Face, cannot be painted before coating process by electrophoresis, smear the selection that spot welding glue is best, therefore, the use of spot welding glue before welding It is very important on the way.
Automobile spot welding glue currently on the market is mainly PVC (polyvinyl chloride) type, it is hot setting type spot welding glue, this Kind product can release hydrogen chloride gas and generate salt fog to corrode solder joint when being toasted at 140 DEG C, and fire-retardant and electric conductivity is bad, And adhesive force and elasticity are bad, peel strength is low, and spot welding rate of descent is apparent, influences the intensity of spot welding, belongs to static sealing.
Invention content
The present invention gets on the car with releasing hydrogen chloride gas when spot welding glue high-temperature baking for existing market and properties are not Good present situation provides a kind of dedicated rubber-type sealant for spot welding of white body and preparation method thereof.
The technical solution that the present invention solves above-mentioned technical problem is as follows：
A kind of white body special (purpose) rubber type sealant for spot welding, by weight score meter, including following component：Mixing rubber 45~ 55%, titanium dioxide 4.5~5.5%, powdered whiting 18~22%, nano-calcium carbonate 9~11%, vulcanizer 0.27~ 0.33%, diluent 2.7~3.3%, vulcanization accelerator 0.27~0.33%, tackifier 2.7~3.3%, liquid flame retardant 3.6 ~4.4%, conductive black 4.0~5.5%；
Mixing rubber score meter by weight, including following component：Butadiene rubber 12.6~15.4%, nitrile rubber 12.6~15.4%, butadiene-styrene rubber 25.2~30.8%, liquid polybutadiene 27~33%, powdered whiting 4.5~5.5%, Conventional lightweight calcium carbonate 4.5~5.5%, anti-aging agent 3.8~4.4%.
Heretofore described nano-calcium carbonate refers to the precipitated calcium carbonate of Li Jing≤100nm, and conventional lightweight calcium carbonate is Refer to the precipitated calcium carbonate of Li Jing≤1000nm.
Further, the vulcanizer is cumyl peroxide (DCP).
Further, the diluent is 80# solvent naphthas.
Further, the vulcanization accelerator is tetramethylthiuram disulfide (TMTD) and 2-mercaptobenzothiazole (MBT) Mixture.
Further, the tackifier refer to the mixture of epoxy resin and latent curing agent, the latent curing agent For one kind in boron trifluoride-amine complex, organic hydrazides or imidazoles.
Further, the liquid flame retardant is halogen-free type liquid flame retardant, preferably triisopropyl phenyl phosphate (IPPP).
Further, the conductive black is acetylene carbon black.
Further, the anti-aging agent is N, N'- DTPD di tolyl p phenylenediamines.
The characteristics of rubber-type sealant for spot welding of the present invention, is：
1) using mixing rubber as masterbatch, the component containing PVC is not used, ensures corrosion-free ingredient volatilization in its pinpoint welding procedure, Using halogen-free liquid flame retardant and acetylene conductive black, while not increasing viscosity, not introducing other conductive materials Achieve the purpose that flame-retardant conductive, and organic solvent is free of in being formulated, it is environmentally protective；
2) traditional rubber plastizing agent is substituted using liquid polybutadiene in mixing rubber so that the viscosity of wet glue is low, nothing Plasticizer phenomenon, and polybutadiene is synchronized into cross-linking system during heating vulcanization, makes the intensity after adhesive curing Increase；
3) butadiene rubber cold resistance, elasticity are especially excellent, butadiene-styrene rubber is wear-resisting, heat-resisting, ageing-resistant and curingprocess rate more Excellent, nitrile rubber oil resistivity is fabulous, and bonding force is strong, and three kinds of glue components complement one another after mixing, and overall performance is than single rubber Glue is more excellent, and finished product glue is in use to the more adaptable of various environment.
The advantageous effect of rubber-type sealant for spot welding of the present invention is：
Sealant for spot welding provided by the invention is using mixing rubber as masterbatch, and products obtained therefrom service life is long, and spot welding is not produced Raw salt fog, peel strength and shear strength are high, heat-resist, good toughness.
The preparation method of above-mentioned rubber-type sealant for spot welding is also claimed in the present invention, includes the following steps：
1) mixing rubber is prepared：By butadiene rubber, nitrile rubber and butadiene-styrene rubber stripping and slicing, after be put into refining glue by weight proportion In machine, the roll spacing of rubber mixing machine is adjusted so that three kinds of rubber bags are kneaded on roller；Score precise liquid is poly- by weight It is uniformly mixed to obtain sizing material after butadiene, powdered whiting, conventional lightweight calcium carbonate and anti-aging agent, sizing material is repeatedly added on a small quantity The upper surface of mixing rubber, and carry out cutting the operation that turns refining, so that it is uniformly mixed, then bottom sheet, is placed for use；
2) score weighs titanium dioxide, powdered whiting, nano-calcium carbonate, vulcanizer, diluent, vulcanization rush by weight Being stirred in batching kettle into agent, tackifier, liquid flame retardant and conductive black makes it be uniformly mixed, and obtains semi-finished product；
3) semi-finished product of gained in step 2) are added in kneader, open kneader, after step 1) is added thereto The mixing rubber of middle gained is mediated 1~2 hour after addition, and mixing rubber is added and is controlled during the entire process of mediating and pinches The operating temperature of conjunction machine is at 45 DEG C or less；
4) it closes and mediates cover, vacuumize, remove and mediate bubble to get rubber-type sealant for spot welding.
The advantageous effect of preparation method of the present invention is：
(1) each component of sealant for spot welding is modulated into semi-finished product in advance, so that each auxiliary material mixing is more uniformly distributed, improves spot welding The greater homogeneity of glue finished product；
(2) kneading process is more efficient than modes such as the grinding, the stirrings that are commonly used, and colloid is more uniformly distributed, and mediates The mode being directly evacuated in the process reduces the processing step of the simple pumping bubble of technique early period.
Specific implementation mode
Principles and features of the present invention are described below in conjunction with example, the given examples are served only to explain the present invention, and It is non-to be used to limit the scope of the present invention.
Embodiment 1：
A kind of white body special (purpose) rubber type sealant for spot welding, by weight score meter, including following component：Mixing rubber 50%, titanium dioxide 5.0%, powdered whiting 19.4%, nano-calcium carbonate 10%, vulcanizer DCP 0.3%, diluent 80# solvent naphthas 3%, vulcanization accelerator TMTD 0.2%, accelerator M BT 0.1%, tackifier 3.0%, the life of dongle chemical industry Fire retardant Doher-6054%, the acetylene carbon black 5% of production, tackifier are that bisphenol A type epoxy resin and adipic dihydrazide are latent Property curing agent is according to mass ratio 1:The mixture of 1 mixing gained；
Mixing rubber score meter by weight, including following component：Butadiene rubber 14%, nitrile rubber 14%, butylbenzene Rubber 28%, liquid polybutadiene 30%, powdered whiting 5.0%, conventional lightweight calcium carbonate 5.0%, anti-aging agent N, N'- diformazan Diphenyl-para-phenylene diamine 4.0%.
Embodiment 2：
A kind of white body special (purpose) rubber type sealant for spot welding, by weight score meter, including following component：Mixing rubber 45%, titanium dioxide 5.5%, powdered whiting 22%, nano-calcium carbonate 11%, vulcanizer DCP 0.33%, diluent 80# Solvent naphtha 3.3%, vulcanization accelerator TMTD 0.2%, accelerator M BT 0.13%, tackifier 3.3%, the life of dongle chemical industry Fire retardant Doher-6014.4%, the acetylene carbon black 4.84% of production, tackifier are bisphenol f type epoxy resin and boron trifluoride list second Amine complex latent curing agent is according to mass ratio 1:The mixture of 1 mixing gained；
Mixing rubber score meter by weight, including following component：Butadiene rubber 15.4%, nitrile rubber 12.6%, Butadiene-styrene rubber 25.2%, liquid polybutadiene 33%, powdered whiting 4.5%, conventional lightweight calcium carbonate 5.5%, anti-aging agent N, N'- DTPD di tolyl p phenylenediamines 3.8%.
Embodiment 3：
A kind of white body special (purpose) rubber type sealant for spot welding, by weight score meter, including following component：Mixing rubber 55%, titanium dioxide 4.5%, powdered whiting 18%, nano-calcium carbonate 9%, vulcanizer DCP 0.27%, diluent 80# Solvent naphtha 2.7%, vulcanization accelerator TMTD 0.2%, accelerator M BT 0.07%, tackifier 2.7%, the life of dongle chemical industry Fire retardant Doher-6013.6%, the acetylene carbon black 4.0% of production, tackifier are that bisphenol-s epoxy resin and 2-methylimidazole are latent Volt property curing agent is according to mass ratio 1:The mixture of 1 mixing gained；
Mixing rubber score meter by weight, including following component：Butadiene rubber 12.6%, nitrile rubber 15.4%, Butadiene-styrene rubber 30.8%, liquid polybutadiene 27%, powdered whiting 5.5%, conventional lightweight calcium carbonate 4.5%, anti-aging agent N, N'- DTPD di tolyl p phenylenediamines 4.2%.
Embodiment 4：
A kind of white body special (purpose) rubber type sealant for spot welding, by weight score meter, including following component：Mixing rubber 50%, titanium dioxide 4.5%, powdered whiting 19.4%, nano-calcium carbonate 10%, vulcanizer DCP 0.3%, diluent 80# solvent naphthas 3%, vulcanization accelerator TMTD 0.2%, accelerator M BT 0.1%, tackifier 3.0%, the life of dongle chemical industry Fire retardant Doher-6054%, the acetylene carbon black 5.5% of production, tackifier are that bisphenol A type epoxy resin and adipic dihydrazide are latent Volt property curing agent is according to mass ratio 1:The mixture of 1 mixing gained；
Mixing rubber score meter by weight, including following component：Butadiene rubber 14%, nitrile rubber 14%, butylbenzene Rubber 28%, liquid polybutadiene 30%, powdered whiting 4.8%, conventional lightweight calcium carbonate 4.8%, anti-aging agent N, N'- diformazan Diphenyl-para-phenylene diamine 4.4%.
The preparation method of the rubber-type sealant for spot welding of Examples 1 to 4 is as follows：
1) mixing rubber is prepared：By butadiene rubber, nitrile rubber and butadiene-styrene rubber stripping and slicing, after be put into refining glue by weight proportion In machine, the roll spacing of rubber mixing machine is adjusted so that three kinds of rubber bags are kneaded on roller；Score precise liquid is poly- by weight It is uniformly mixed to obtain sizing material after butadiene, powdered whiting, conventional lightweight calcium carbonate and anti-aging agent, sizing material is repeatedly added on a small quantity The upper surface of mixing rubber, and carry out cutting the operation that turns refining, so that it is uniformly mixed, then bottom sheet, is placed for use；
2) score weighs titanium dioxide, powdered whiting, nano-calcium carbonate, vulcanizer, diluent, vulcanization rush by weight Being stirred in batching kettle into agent, tackifier, liquid flame retardant and conductive black makes it be uniformly mixed, and obtains semi-finished product；
3) semi-finished product of gained in step 2) are added in kneader, open kneader, after step 1) is added thereto The mixing rubber of middle gained is mediated 1~2 hour after addition, and mixing rubber is added and is controlled during the entire process of mediating and pinches The operating temperature of conjunction machine is at 45 DEG C or less；
4) it closes and mediates cover, vacuumize, remove and mediate bubble to get rubber-type sealant for spot welding.
The sealant for spot welding of the gained of embodiment 1 has been subjected to every test, and with the spot welding glue of the riding depot in east wind Liuzhou It is compared using standard, the results are shown in Table 1.
The performance test results of the sealant for spot welding of 1 embodiment 1 of table
By the data comparison in table 1 it is found that compared with sealant for spot welding available on the market, rubber-type provided by the invention For sealant for spot welding other than not generating salt fog in spot welding, peel strength and shear strength are far above existing product in the market, And corrosion resistance is good, anti-flammability and toughness are also superior to existing sealant for spot welding in the market.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and Within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.

Claims (10)

1. a kind of white body special (purpose) rubber type sealant for spot welding, which is characterized in that score meter by weight, including following component：It is mixed Refine rubber 45~55%, titanium dioxide 4.5~5.5%, powdered whiting 18~22%, nano-calcium carbonate 9~11%, the vulcanization of rubber Agent 0.27~0.33%, diluent 2.7~3.3%, vulcanization accelerator 0.27~0.33%, tackifier 2.7~3.3%, liquid Fire retardant 3.6~4.4%, conductive black 4.0~5.5%；
Mixing rubber score meter by weight, including following component：Butadiene rubber 12.6~15.4%, nitrile rubber 12.6~ 15.4%, butadiene-styrene rubber 25.2~30.8%, liquid polybutadiene 27~33%, powdered whiting 4.5~5.5%, common light Matter calcium carbonate 4.5~5.5%, anti-aging agent 3.8~4.4%.
2. rubber-type sealant for spot welding according to claim 1, which is characterized in that the vulcanizer is peroxidating two Isopropylbenzene.
3. rubber-type sealant for spot welding according to claim 1, which is characterized in that the diluent is 80# solvent naphthas.
4. rubber-type sealant for spot welding according to claim 1, which is characterized in that the vulcanization accelerator is curing four The mixture of methyl thiuram and 2-mercaptobenzothiazole.
5. rubber-type sealant for spot welding according to claim 1, which is characterized in that the tackifier refer to epoxy resin with The mixture of latent curing agent, the latent curing agent are in boron trifluoride-amine complex, organic hydrazides or imidazoles One kind.
6. rubber-type sealant for spot welding according to claim 1, which is characterized in that the liquid flame retardant is halogen-free type liquid Body fire retardant.
7. rubber-type sealant for spot welding according to claim 6, which is characterized in that the halogen-free type liquid flame retardant is phosphorus Sour triisopropyl phenyl ester.
8. rubber-type sealant for spot welding according to claim 1, which is characterized in that the conductive black is acetylene carbon black.
9. rubber-type sealant for spot welding according to claim 1, which is characterized in that the anti-aging agent is N, N'- dimethylbenzene Base p-phenylenediamine.
10. a kind of preparation method of claim 1~9 any one of them rubber-type sealant for spot welding, which is characterized in that including Following steps：
1) mixing rubber is prepared：By butadiene rubber, nitrile rubber and butadiene-styrene rubber stripping and slicing, after be put into rubber mixing machine by weight proportion In, adjust the roll spacing of rubber mixing machine so that three kinds of rubber bags are kneaded on roller；The poly- fourth of score precise liquid by weight It is uniformly mixed to obtain sizing material after diene, powdered whiting, conventional lightweight calcium carbonate and anti-aging agent, sizing material is repeatedly added on a small quantity mixed The upper surface of rubber is refined, and carries out cutting the operation that turns refining, so that it is uniformly mixed, then bottom sheet, is placed for use；
2) score weighs titanium dioxide, powdered whiting, nano-calcium carbonate, vulcanizer, diluent, vulcanization promotion by weight Agent, tackifier, liquid flame retardant and conductive black stir in batching kettle makes it be uniformly mixed, and obtains semi-finished product；
3) semi-finished product of gained in step 2) are added in kneader, open kneader, after institute in step 1) is added thereto The mixing rubber obtained, is mediated 1~2 hour after addition, and mixing rubber is added and controls kneader during the entire process of mediating Operating temperature at 45 DEG C or less；
4) it closes and mediates cover, vacuumize, remove and mediate bubble to get rubber-type sealant for spot welding.
CN201810600402.3A 2018-06-12 2018-06-12 A kind of white body special (purpose) rubber type sealant for spot welding and preparation method thereof Pending CN108641626A (en)

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CN201910419421.0A CN110643306B (en) 2018-06-12 2019-05-20 Special rubber type spot welding sealant for body-in-white and preparation method thereof

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CN110819266A (en) * 2019-12-09 2020-02-21 安徽微威胶件集团有限公司 Sealant composition and preparation method thereof

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CN110643306B (en) * 2018-06-12 2021-01-05 济南汉斯曼时代技术有限公司 Special rubber type spot welding sealant for body-in-white and preparation method thereof
CN110819266A (en) * 2019-12-09 2020-02-21 安徽微威胶件集团有限公司 Sealant composition and preparation method thereof

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