CN102115542B - Method for adhering vulcanized rubber to metal - Google Patents
Method for adhering vulcanized rubber to metal Download PDFInfo
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- CN102115542B CN102115542B CN201010595143A CN201010595143A CN102115542B CN 102115542 B CN102115542 B CN 102115542B CN 201010595143 A CN201010595143 A CN 201010595143A CN 201010595143 A CN201010595143 A CN 201010595143A CN 102115542 B CN102115542 B CN 102115542B
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Abstract
The invention relates to the field of adhesion between rubber and metal, in particular to a method for bonding vulcanized rubber to metal. The method comprises the steps of: coarsening and degreasing an adhesion surface between the vulcanized rubber and the metal; paining thermally-vulcanized adhesive on the processed adhesion surface between the metal and the vulcanized rubber; putting a transition layer on the adhesion surface between the metal and the vulcanized rubber in a painting or adhering way; and adhering the vulcanized rubber to the metal at high intensity in the manner of thermal vulcanization. The adhesion method belongs to a thermally-vulcanized adhesion method. Compared with a common cold adhesion method, the adhesion method is high in adhesion intensity, the peel strength of a 180-degree peel sample can reach 13KN/m, and the adhesion surface is good in toughness and better in dynamic fatigability. The method is wide in applicability, and is particularly suitable for the condition that the surface of the rubber has the structure and can not realize the high-intensity adhesion. The method has the advantages of being simple in operation, high in applicability, low in cost, easy to popularize, and suitable for the industrial production.
Description
Technical field
The present invention relates to rubber and metal sticking field.Be specifically related to the adhering method of a kind of vulcanized rubber and metal.
Background technology
When vulcanized rubber and metal sticking; Because rubber inside after vulcanizing has formed the macromolecules cross-linking network; Vulcanising rubber surface molecule and segment are active to be reduced; Influenced diffusion and co-crosslinking effect between bonding plane place thermovulcanizate stick molecule and the rubber segment, caused vulcanized rubber and metal to be difficult to realize firm bonding through bonding hot vulcanization.
At present, how to realize the bonding of vulcanized rubber and metal in the industry with the cold bonding mode.Be used on the market that vulcanized rubber and the cold adhesive stick of metal sticking mainly contain epoxy resin, acrylics, urethane resin, resol and cooperate sticker of NBR mixture etc. at resol.These resin adhesives under use initial stage or static conditions adhesiveproperties still can, but the cohesive strength under dynamic condition and hot conditions is lower.After resin adhesive solidified in addition, its bonding plane was more crisp, and poor toughness is easy to crack under the condition of dynamically using, and causes vulcanized rubber and metal separation, adhesive failure.
Goal of the invention
The adhering method that the purpose of this invention is to provide a kind of vulcanized rubber and metal, compared with prior art, advantage such as this adhering method has the bonding strength height, and good toughness is easy to operate, and is with low cost.
Summary of the invention
The technical scheme that the present invention adopts is:
Adhering method provided by the invention belongs to the bonding hot vulcanization mode in essence; It is characterized in that elder generation carries out alligatoring, skimming treatment to the bonding plane of vulcanized rubber and metal; Metal after processing and vulcanized rubber bonding plane place's brushing thermovulcanizate stick then; The mode that then transition layer is adopted brushing or paste places the bonding plane place of metal and vulcanized rubber, realizes vulcanized rubber and metal high strength bonding through the hot sulfurization mode at last;
The material of main part of vulcanized rubber; Particularly, various types of tree elastomers or based on viton such as styrene-butadiene copolymer rubber (SBR), polyisoprene rubber (IR), neoprene (CR), acrylonitrile butadiene copolymer rubber (NBR), the styrene-butadiene copolymer rubber of diene, viton can be as example.From bonding and rubber intensity, preferred neoprene
Described metal can be cast iron class materials such as graphitic cast iron, spheroidal graphite cast iron, also can be alloy materials such as common iron, titanium alloy, stainless steel;
Described metal and vulcanising rubber surface alligatoring, skimming treatment mode can be that mechanical grinding is handled or sandblasting, also can adopt chemical treatment such as alkali cleaning and pickling, to remove treated oil, rust or other zone of oxidation.Generally speaking, sandblasting is mainly adopted in the metallic surface, and vulcanising rubber surface adopts vertical or the hand sand machine carries out mechanical grinding to rubber surface, to increase contact area.After finishing, gluing of surfaces sandblast or polishing clear up, to remove surface blot with organic solvents such as acetone or YLENE.
Described transition layer can be a kind of viscous compsn; This viscous compsn can be to form with vulcanized rubber to form same or analogous rubber unvulcanizate; Compare with the composition of vulcanized rubber; Can not have other reinforcement such as carbon black and packing material, anti-aging agent, tenderizer, softening agent in viscosity group and the thing component, but must contain the vulcanizing agent and the promotor that can make its inner macromole form crosslinked networking through sulfuration;
Described transition layer also can be a kind of solvent type tackiness agent.This solvent-based adhesive is made up of viscous compsn described in the technique scheme and organic solvent; The mass ratio of its solvent and described viscous compsn is 100: (25～100); Preferred mass ratio is 100: 50; With respect to the solvent of 100g, the weight span of viscous compsn is between 25g～100g.For guaranteeing best adhesive effect, with respect to the solvent of 100g, the preferred 50g of the weight of viscous compsn.In addition for improving bonding strength, can also add a direct binding system of HRH three components or the direct binding system of a first two-pack formed by methylene radical donor and receptor series tackiness agent, various Resorcinol donor in the transition layer.
The thermovulcanizate stick of metal and the brushing of vulcanized rubber bonding plane place can select for use a kind of model singly to be coated with according to the bonding strength requirement, also can select for use two kinds of models to carry out primary coat and face respectively and be coated with.Its bonding hot vulcanization agent kind can be selected U.S. Kai Muluoke series tackiness agent commonly used, ROHM AND HAAS series, the western nation of Britain series etc. for use.The model of thermovulcanizate stick and list use or also the selection of usefulness will be according to glue kind and metal species and decision.
The present invention compared with prior art has following advantage:
1. vulcanized rubber provided by the invention and metal sticking method belong to the bonding hot vulcanization mode; Compare with cold bonding mode commonly used; Bonding strength is high; The stripping strength of its 180 ° of peel test specimens can reach 13KN/m, and the stripping strength of 180 ° of peel test specimens of cold bonding mode commonly used also has only (4～7) KN/m.
2. when adopting method provided by the invention to carry out vulcanized rubber and metal sticking, its bonding plane tenacity excellent, dynamic fatigue property is better.Bonding plane is at frequency 4HZ, under the effect of load range (20～70) KN scope, can stand 3,000,000 times fatigue test and do not ftracture.And mostly the tackiness agent that adopts in the cold bonding mode is the resene tackiness agent, and bonding plane fragility is big, dynamically reaches under the hot conditions easy to crack.
3. method applicability provided by the invention is wide, is specially adapted to the situation that rubber surface has structure and can't realize high strength bonding, also is adapted to simultaneously the bonding of relatively poor rubber of adhesiveproperties such as viton and metal.
4. present method is simple to operate, and flexibility is strong, and with low cost have a plurality of advantages that is easy to promote and be applicable to suitability for industrialized production.
Embodiment
Embodiment in conjunction with providing explains the present invention, but does not constitute any restriction of the present invention:
1. the preparation of adhesive transition layer
A kind of method is that the mechanism that the viscous compsn utilization can produce kneading, shearing action is processed into the thin slice of 0.8mm～1.5mm is for use, and this thin slice can directly be used as adhesive transition layer.
Another kind method is that the viscous compsn thin slice is dissolved in the organic solvent, and the kind of organic solvent has toluene, YLENE, hexanaphthene, gasoline etc.; Stir (10～15) minute with accelerate dissolution, process the solvent-based adhesive that is used as transition layer.
2. bonding
With the bonding plane of vulcanized rubber and metal polish respectively, degreasing, cleaning; Then respectively at rubber and spraying of metal sticking face place or brushing thermovulcanizate stick; Be coated with the type tackiness agent like Kai Muluoke 252X, western nation 24, ROHM AND HAAS P-11 and 538 pairs; After drying fully Deng the thermovulcanizate stick; Respectively at metal and the brushing of vulcanized rubber bonding plane or spraying transition layer tackiness agent or directly between vulcanized rubber bonding plane and metal sticking face, paste the viscous compsn thin slice, when brushing or spraying transition layer tackiness agent, the transition layer tackiness agent need hang its surperficial fingertip and not glue on metal and vulcanized rubber bonding plane.At last metal and rubber are put into mould; Under the temperature condition of 100 ℃～160 ℃ of die temperatures; Pressurization 5Mpa～12Mpa; Sulfuration 15min～50min can realize the high strength bonding of vulcanized rubber and metal, and its cure conditions (curing temperature, sulfide stress, curing time) needs to confirm according to the composition of vulcanized rubber.
Embodiment 1
Vulcanized rubber is identical with the composition of viscous compsn among this embodiment, concrete forms for details see attached table 1, and metal is a stainless steel.Transition layer is the viscous compsn thin slice.
(1) utilize mill that the thin slice that viscous compsn is processed into 0.8mm～1.5mm is for use, thin slice needs thickness even, smooth surface.
(2) with 80 purpose sand paper the vulcanized rubber bonding plane is polished, with acetone its bonding plane is cleaned (2～3) time then, it is for use to dry the back.Adopt after the sandblasting with acetone (2～3) time the metallic surface, dries afterwards for use.
(3) first primary coat one deck Kai Muluoke 205 type thermovulcanizate sticks on the metal sticking face of handling well, hang (20～30) minute after, be coated with one deck Kai Muluoke 252X type sizing agent at metal and vulcanized rubber bonding plane place face respectively again.Hang after (20～30) minute for use then.During each the brushing, the consumption of thermovulcanizate stick is controlled at 150g/m
2About.
(4) die temperature being set is 125 ℃, then metal, viscous compsn, vulcanized rubber is put into bonding mould successively according to order from down to up.Viscous compsn is positioned at the bonding plane place of metal and vulcanized rubber.The matched moulds sulfuration.The control sulfide stress is 8Mpa, curing time 15 minutes.
The bonding sample that adopts this method to make, its 180 ° of stripping strengths can reach 13.1KN/m, and 90 ° of stripping strengths can reach 14.6KN/m.
Embodiment 2
Vulcanized rubber is similar with the composition of viscous compsn among this embodiment, concrete forms for details see attached table 2, and metal is a stainless steel.Transition layer is that viscous compsn is dissolved in the solvent-based adhesive of processing in the organic solvent.
(1) get the 10g viscous compsn and be cut into particulate state, maximum length does not surpass 1cm.Put it into then in the 20g ethyl acetate solvent.Be accelerate dissolution, can stir (12～15) minute, place for use.
(2) bonding plane of vulcanized rubber and metal is handled and can be adopted (2) among the embodiment 1, (3) step.
(3) the bonding plane place of vulcanized rubber after processing and metal brushing Kai Muluoke 607 type thermovulcanizate sticks respectively hang after brushing twice after (20～30) minute for use.Each does not have the brush of leakage phenomenon all over all brushing evenly, and the consumption of at every turn brushing Kai Muluoke 607 is controlled at 100g/m
2About.
(4) brushing twice solvent-based adhesive of metal sticking face surface brushing of tackiness agent as transition layer.The gauge control of every time transition layer is about 150 μ m.Second time brushing needs can to brush second time hanging after the first pass brushing under the sticking situation of tentacle.After second time transition layer brushing finishes, hang and to use after the surperficial fingertip of transition layer does not glue by the time after 8～10 minutes.
(4) die temperature being set is 160 ℃, then metal, vulcanized rubber is put into bonding mould successively according to order from down to up.The matched moulds sulfuration.The control sulfide stress is 8Mpa, curing time 25 minutes.
The bonding sample that adopts this method to make, its 180 ° of stripping strengths can reach 9.8KN/m, and 90 ° of stripping strengths can reach 10.6KN/m.
3. subordinate list
Subordinate list 1
Subordinate list 2
Claims (7)
1. the adhering method of vulcanized rubber and metal; The adhering method of described vulcanized rubber and metal belongs to the bonding hot vulcanization mode in essence; It is characterized in that: the bonding plane to vulcanized rubber and metal carries out alligatoring, skimming treatment; Metal after processing and vulcanized rubber bonding plane place's brushing thermovulcanizate stick then; The mode that then transition layer is adopted brushing or paste places the bonding plane place of metal and vulcanized rubber, realizes vulcanized rubber and metal high strength bonding through the hot sulfurization mode at last;
The material of main part of described vulcanized rubber is for various types of tree elastomers or based on the following viton of diene: styrene-butadiene copolymer rubber (SBR), polyisoprene rubber (IR), neoprene (CR), acrylonitrile butadiene copolymer rubber (NBR), styrene-butadiene copolymer rubber, viton;
Described metal is a cast iron class material, or is common iron, titanium alloy, stainless steel; Wherein said cast iron class material is graphitic cast iron, spheroidal graphite cast iron;
Described metal and vulcanising rubber surface alligatoring, skimming treatment mode are that mechanical grinding is handled or sandblasting, or adopt chemical treatment, to remove treated oil, rust or other zone of oxidation; Described chemical treatment is: sandblasting is mainly adopted in alkali cleaning and pickling, metallic surface, and vulcanising rubber surface carries out mechanical grinding with vertical or hand sand machine to rubber surface, to increase contact area; After finishing, gluing of surfaces sandblast or polishing clear up, to remove surface blot with acetone or YLENE organic solvent;
Described transition layer is a kind of viscous compsn; This viscous compsn is to form with vulcanized rubber to form same or analogous rubber unvulcanizate; Compare with the composition of vulcanized rubber; Do not have carbon black and packing material, anti-aging agent, tenderizer, softening agent in the viscous compsn component, but must contain the vulcanizing agent and the promotor that can make its inner macromole form crosslinked networking through sulfuration; Or described transition layer is a kind of solvent type tackiness agent; Said solvent-based adhesive is made up of aforesaid viscous compsn and organic solvent;
The thermovulcanizate stick of metal and vulcanized rubber bonding plane place brushing selects for use a kind of model singly to be coated with according to the bonding strength requirement, or selects for use two kinds of models to carry out primary coat and face respectively to be coated with; Its bonding hot vulcanization agent kind is selected U.S. Kai Muluoke series tackiness agent commonly used, ROHM AND HAAS series tackiness agent, Britain west nation series tackiness agent for use.
2. the adhering method of a kind of vulcanized rubber as claimed in claim 1 and metal; It is characterized in that: described transition layer is the thin slice that the mechanism that the viscous compsn utilization can produce kneading, shearing action is processed into 0.8mm～1.5mm, and said thin slice is directly as adhesive transition layer.
3. the adhering method of a kind of vulcanized rubber as claimed in claim 2 and metal is characterized in that: described transition layer is that the viscous compsn thin slice is dissolved in the organic solvent, and the mass ratio of compsn and solvent is 1: 1～3; Stir 10～15 minutes with accelerate dissolution, process the solvent-based adhesive that is used as transition layer.
4. the adhering method of a kind of vulcanized rubber as claimed in claim 1 and metal; It is characterized in that: the hot sulfurization mode of said realization vulcanized rubber and metal high strength bonding is that metal and vulcanized rubber are put into mould; Under the temperature condition of 100 ℃～160 ℃ of die temperatures; Pressurization 5Mpa～12Mpa, curing time 15min～50min.
5. the adhering method of a kind of vulcanized rubber as claimed in claim 1 and metal is characterized in that: said vulcanized rubber as main body is a neoprene.
6. the adhering method of a kind of vulcanized rubber as claimed in claim 1 and metal is characterized in that: the mass ratio of said organic solvent and described viscous compsn is 100: 25～100.
7. the adhering method of a kind of vulcanized rubber as claimed in claim 1 and metal is characterized in that: the mass ratio of said organic solvent and described viscous compsn is 100: 50.
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| CN201010595143A CN102115542B (en) | 2010-12-20 | 2010-12-20 | Method for adhering vulcanized rubber to metal |
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