CN101659102B - Method for bonding silastic sealing strip and aluminium part by heat vulcanization - Google Patents
Method for bonding silastic sealing strip and aluminium part by heat vulcanization Download PDFInfo
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- CN101659102B CN101659102B CN2009101073969A CN200910107396A CN101659102B CN 101659102 B CN101659102 B CN 101659102B CN 2009101073969 A CN2009101073969 A CN 2009101073969A CN 200910107396 A CN200910107396 A CN 200910107396A CN 101659102 B CN101659102 B CN 101659102B
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Abstract
The invention discloses a method for a bonding a silastic sealing strip and an aluminium part by heat vulcanization. The method comprises the steps of: A. coating a silastic binder layer on the surface of the aluminimu part; B. injecting a silastic sealing strip melted mass into the surface of the silastic binder layer on the aluminium part by adopting an injection mould under the conditions of the temperature of 160-190 DEG C and the pressure of 10-25MPa; C. keeping the inner pressure of the injection mould to be 10-25Mpa, and heating to lead the silastic sealing strip and the silastic binder to be vulcanized simultaneously; and D. opening the mould after preset time, and taking out the aluminium part bonded with the silastic sealing strip. The method adopts the heating manner to lead the silastic sealing strip and the silastic binder to be vulcanized simultaneously so as to lead the silastic sealing strip, the silastic binder and the aluminium part to have better curing effect, thusleading the equipment cabinet made by adopting the aluminium part to obtain the best bonding strength and water-proof sealing effect; and the method has simple operation, and can save processing costand time.
Description
Technical field
The present invention relates to a kind of material preparation process, relate in particular to the bonding hot vulcanization method of a kind of silastic sealing strip and aluminum component.
Background technology
Along with the development of information and communication industry, outdoor rack requirement is increasing, and outdoor rigorous environment; Like rainwater, air, sunlight etc.; The rugged environment factor possibly cause the aging acceleration of rack, if the sealing effectiveness of rack is bad, when particularly waterproof effect is relatively poor; Rainwater will be fatal harm to the equipment in the rack like circuit board and electronic devices and components.
And traditional method is with behind the rubber curing forming, under room temperature environment, on aluminum component, smears adhesive, and rubber and aluminum component are bonded in one.The rubber of bonding is uneven like this; Because rubber own has elasticity and comparatively soft; Adhesive need apply and can bond after certain pressure makes two binding faces be adjacent to firmly, and in case when firmly pullling rubber strip, rubber deformation; Originally the rubber weather strip that designed cooperates with aluminum component and will misplace, even some place is bonding at all incessantly.This is because silicon rubber itself belongs to non-polar rubber; Relatively compared with polar rubber, like acrylonitrile-butadiene rubber, neoprene etc. and neutral rubber; Like natural rubber, butyl rubber etc.; Belong to difficult bonding rubber, and the bonding between metal and the rubber must, adhesive just can play certain bond effect when can soaking into metal and rubber simultaneously.And adhesive itself also is a kind of rubber, and rubber must could bond together two contact-making surfaces behind over cure (curing); And general cold curing and the hot setting of being solidified with; For example silicone rubber adhesive can at room temperature vulcanize, and needs very long but shortcoming is exactly a cure time; Sometimes reach 36～72 hours, and vulcanize insufficient.
Above conventional method need with vulcanized rubber with smear the adhesive adhesive rubber and separate with the aluminum component operation, can not save the electricity charge time, and bonding bothers comparatively, the special frock of needs also, adhesion strength is low, the waterproof sealing weak effect.
Therefore, prior art haves much room for improvement and improves.
Summary of the invention
The objective of the invention is to the above-mentioned shortcoming to prior art, provide a kind of aluminum component that can make communication cabinet to have good adhesion strength and waterproof sealing effect, the adhering method of silastic sealing strip and aluminum component.
Technical scheme of the present invention is following:
A kind of silicon rubber and aluminum component heat cure adhesive method may further comprise the steps:
A, at aluminum component surface coated silastic adhesive layer;
B, at 160～190 ℃ of temperature conditions, and under the pressure condition of 10～25MPa, adopt injection mold that the silastic sealing strip molten mass is injected the silicon rubber adhesive layer surface on the aluminum component;
C, maintenance injection mold internal pressure are 10～25MPa, and silastic sealing strip and silicon rubber binding agent are vulcanized simultaneously;
D, after the scheduled time opening mold, take out the aluminum component be bonded with silastic sealing strip.
Adhesive method of the present invention, wherein, the thickness of said silicon rubber adhesive layer is smaller or equal to 0.1mm.
Adhesive method of the present invention, wherein, the said scheduled time is 2～5 minutes.
Adhesive method of the present invention, wherein, said aluminum component is the aluminum component on the communication cabinet.
Adhesive method of the present invention wherein, adopts the rubber vulcanizing machine heating plate that said injection mold is heated.
Beneficial effect of the present invention is: be coated with the silicone rubber adhesive layer that brushes suitable thickness through between silastic sealing strip and aluminum component, having; Heating is vulcanized silastic sealing strip and silicon rubber binding agent simultaneously; Make silastic sealing strip and silicone rubber adhesive, and the aluminum component solidification effect is better, adopts the rack of this aluminum component preparation to obtain best adhesive strength and waterproof sealing effect thereby make; Because it is simple to operate, can save processing charges and time greatly.
Description of drawings
Fig. 1 is the silastic sealing strip of the embodiment of the invention and the bonding hot vulcanization method flow diagram of aluminum component.
The specific embodiment
For making the object of the invention, technical scheme and advantage clearer, clear and definite, below develop simultaneously embodiment to further explain of the present invention with reference to accompanying drawing.
The bonding hot vulcanization method flow of silastic sealing strip of the present invention and aluminum component is as shown in Figure 1, below through four specific embodiments, and combines Fig. 1 that this method flow is described in detail.
Embodiment 1
Preparation needs the aluminum component of the rack of installation, and the silastic sealing strip that needs, and operates below carrying out:
Step S101, at aluminum component surface coated silastic adhesive layer;
On the aluminum component surface between aluminum component and the silastic sealing strip, coat the silicone rubber binder layer; Aluminum component is placed on earlier in the good injection mold of preheating, and wherein, the silicon rubber adhesive layer does not need very thick; To make things convenient for heat cure to be as the criterion; Thickness is best with 0.1mm, also can be slightly less than 0.1mm, or less times greater than 0.1mm.
Step S102, at high temperature adopts injection mold to inject the silicon rubber adhesive layer surface on the aluminum component silastic sealing strip molten mass;
Injection mold is through the heating of rubber vulcanizing machine heating plate, and temperature is controlled at 160 ℃, and pressure is controlled at 25MPa.The injection mold that uses in the present embodiment is a three-decker; Its three layers can independently be separated; Have tiny runner at second layer mould, the ground floor mould is placed the firm silicone rubber sealing strip and is used for injecting glue, makes the heat-vulcanized silastic sealing strip get into the rubber mold die cavity through the runner of the second layer; The 3rd layer of mould is used for fixing aluminum component, and the second layer and the 3rd layer of matched moulds constitute the rubber mold die cavity.And three layers of mould that mould can design for the mould engineer as required of present embodiment also can design the injection mold that can reach same purpose according to the difform needs of product, make this method easier and easy to implement.
During use; The sealing strip of mixing silicon rubber glue sheet is placed on the ground floor mould; During the injection mold matched moulds; Press great waves to get in the rubber mold die cavity silicon rubber gross rubber in the ground floor, go up fixing aluminum component for the 3rd layer and scribble the bottom of the one side of silicon rubber adhesive layer, silicon rubber adhesive layer and heat-vulcanized silastic sealing strip are combined closely as the rubber mold die cavity through tiny runner casting.
Step S103, maintenance injection mold internal pressure are 10～25MPa, and heating is vulcanized silastic sealing strip and silicon rubber binding agent simultaneously;
Step S104, after the scheduled time, open injection mold, take out the aluminum component that the surface is bonded with silastic sealing strip.
Owing under high-temperature and high-pressure conditions, vulcanize, the scheduled time of indication is short more a lot of than cure time of the prior art, is about 2～5 minutes; Be preferably the pressure 3 minutes that rubber vulcanizing machine is kept 25MPa, mold open takes out product then; Deburring; Finishing cleaning, electrostatic spraying aluminum component surface etc. can obtain the good aluminum component product of bond effect of silastic sealing strip and aluminum component.Owing to adopted three layers of mould one-shot forming, make shorten greatly process time, improved production efficiency.
After the stack of cabinets of the aluminum component of the silastic sealing strip that includes the adhesive method preparation of adopting present embodiment installed, through situation experiment test on the spot repeatedly, its adhesion strength was good.Rack is soaked more than 72 hours in water fully, have no drainage, waterproof effect can satisfy user demand fully.
Embodiment 2
Do the operation of step S101, step S102 and the step S103 of above embodiment 1 equally, different is temperature, pressure and the reaction time that changes the heating of rubber vulcanizing machine heating plate, makes its temperature be controlled at 190 ℃; Pressure is controlled at 20MPa, and the rubber vulcanizing machine dwell time is 2 minutes, then mold open; Product is taken out deburring, finishing cleaning; Electrostatic spraying aluminum component surfaces etc. can obtain the good aluminum component product of bond effect of silastic sealing strip and aluminum component.
After the stack of cabinets of the aluminum component of the silastic sealing strip that includes the adhesive method preparation of adopting present embodiment installed, through situation experiment test on the spot repeatedly, its adhesion strength was good.Rack is soaked more than 72 hours in water fully, have no drainage, waterproof effect can satisfy user demand fully.
Embodiment 3
Do the operation of step S101, step S102 and the step S103 of above embodiment 1 equally, different is temperature, pressure and the reaction time that changes the heating of rubber vulcanizing machine heating plate, makes its temperature be controlled at 150 ℃; Pressure is controlled at 10MPa, and the rubber vulcanizing machine dwell time is 5 minutes, then mold open; Product is taken out deburring, finishing cleaning; Electrostatic spraying aluminum component surfaces etc. can obtain the good aluminum component product of bond effect of silastic sealing strip and aluminum component.
After the stack of cabinets of the aluminum component of the silastic sealing strip that includes the adhesive method preparation of adopting present embodiment installed, through situation experiment test on the spot repeatedly, its adhesion strength was good.Rack is soaked more than 72 hours in water fully, have no drainage, waterproof effect can satisfy user demand fully.
Embodiment 4
Do the operation of step S101, step S102 and the step S103 of above embodiment 1 equally, different is temperature, pressure and the reaction time that changes the heating of rubber vulcanizing machine heating plate, makes its temperature be controlled at 180 ℃; Pressure is controlled at 13MPa, and the rubber vulcanizing machine dwell time is 4 minutes, then mold open; Product is taken out deburring, finishing cleaning; Electrostatic spraying aluminum component surfaces etc. can obtain the good aluminum component product of bond effect of silastic sealing strip and aluminum component.
After the stack of cabinets of the aluminum component of the silastic sealing strip that includes the adhesive method preparation of adopting present embodiment installed, through situation experiment test on the spot repeatedly, its adhesion strength was good.Rack is soaked more than 72 hours in water fully, have no drainage, waterproof effect can satisfy user demand fully.
The present invention is through being coated with the silicone rubber adhesive layer that brushes suitable thickness between silastic sealing strip and aluminum component; And heating makes the sulfuration simultaneously at high temperature of silastic sealing strip and silicon rubber binding agent; Make that the silicone rubber adhesive solidification effect is better, and cost saving greatly and time.
Adopt the aluminum component product of the bonding hot vulcanization method preparation of silastic sealing strip of the present invention and aluminum component; Have good sealing, particularly waterproof effect, can well protect circuit board and electronic devices and components in the rack; Avoid damaging because of leaking; Have than separately that the silicon rubber vulcanization back that forms out is better through the adhesion strength of the glue of room temperature bonding, and the waterproof sealing effect is also better, and the injection mold that its processing is adopted can obtain through simple designs; Make method operation of the present invention more simple and convenient, be easy to promotion and implementation.
Should be understood that, concerning those of ordinary skills, can improve or conversion, and all these improvement and conversion all should belong to the protection domain of accompanying claims of the present invention according to above-mentioned explanation.
Claims (5)
1. the heat cure adhesive method of silastic sealing strip and aluminum component may further comprise the steps:
A, at aluminum component surface coated silastic adhesive layer;
B, at 160～190 ℃ of temperature conditions, and under the pressure condition of 10～25MPa, adopt injection mold that the silastic sealing strip molten mass is injected the silicon rubber adhesive layer surface on the aluminum component;
C, maintenance injection mold internal pressure are 10～25MPa, and silastic sealing strip molten mass and silicon rubber binding agent are vulcanized simultaneously;
D, after the scheduled time, open injection mold, take out the aluminum component that is bonded with silastic sealing strip;
Said injection mold is a three-decker; Its three layers can independently be separated; Have tiny runner at second layer mould, the ground floor mould is placed the firm silicone rubber sealing strip and is used for injecting glue, makes the heat-vulcanized silastic sealing strip get into the rubber mold die cavity through the runner of the second layer; The 3rd layer of mould is used for fixing aluminum component, and the second layer and the 3rd layer of matched moulds constitute the rubber mold die cavity.
2. adhesive method as claimed in claim 1 is characterized in that the thickness of said silicon rubber adhesive layer is smaller or equal to 0.1mm.
3. adhesive method as claimed in claim 1 is characterized in that, the scheduled time is 2～5 minutes among the said step C.
4. adhesive method as claimed in claim 1 is characterized in that, said aluminum component is the aluminum component on the communication cabinet.
5. adhesive method as claimed in claim 1 is characterized in that, among said step B and the C, adopts the rubber vulcanizing machine heating plate that said injection mold is heated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101073969A CN101659102B (en) | 2009-05-21 | 2009-05-21 | Method for bonding silastic sealing strip and aluminium part by heat vulcanization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101073969A CN101659102B (en) | 2009-05-21 | 2009-05-21 | Method for bonding silastic sealing strip and aluminium part by heat vulcanization |
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| CN101659102A CN101659102A (en) | 2010-03-03 |
| CN101659102B true CN101659102B (en) | 2012-07-25 |
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| CN2009101073969A Active CN101659102B (en) | 2009-05-21 | 2009-05-21 | Method for bonding silastic sealing strip and aluminium part by heat vulcanization |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102519875A (en) * | 2011-12-30 | 2012-06-27 | 西南铝业（集团）有限责任公司 | Adhesive detection method and device for aluminum alloy coating products for automobile seal strips |
| CN105150441A (en) * | 2015-09-17 | 2015-12-16 | 中国航空工业集团公司沈阳发动机设计研究所 | Runner-plate and rubber-strip assembly and molding method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1765625A (en) * | 2004-10-30 | 2006-05-03 | 鸿富锦精密工业（深圳）有限公司 | Metal surface coating applying edge sealing goods and manufacture method thereof |
| CN101190558A (en) * | 2006-11-22 | 2008-06-04 | 舟山市海霖密封件有限公司 | Method of preparing compound sealing component used for internal combustion engine |
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2009
- 2009-05-21 CN CN2009101073969A patent/CN101659102B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1765625A (en) * | 2004-10-30 | 2006-05-03 | 鸿富锦精密工业（深圳）有限公司 | Metal surface coating applying edge sealing goods and manufacture method thereof |
| CN101190558A (en) * | 2006-11-22 | 2008-06-04 | 舟山市海霖密封件有限公司 | Method of preparing compound sealing component used for internal combustion engine |
Non-Patent Citations (1)
| Title |
|---|
| 梁星宇，周木英.硫化条件的选取和确定.《橡胶工业手册第三分册，配方与基本工艺》.化学工业出版社,1996,1125,1126. * |
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