CS196277B2 - Method of making the concentrated binder - Google Patents
Method of making the concentrated binder Download PDFInfo
- Publication number
- CS196277B2 CS196277B2 CS471475A CS471475A CS196277B2 CS 196277 B2 CS196277 B2 CS 196277B2 CS 471475 A CS471475 A CS 471475A CS 471475 A CS471475 A CS 471475A CS 196277 B2 CS196277 B2 CS 196277B2
- Authority
- CS
- Czechoslovakia
- Prior art keywords
- liquid
- binder
- methyl methacrylate
- trichloroethane
- brazing
- Prior art date
Links
- 239000011230 binding agent Substances 0.000 title claims abstract description 23
- 238000004519 manufacturing process Methods 0.000 title abstract description 3
- 238000005219 brazing Methods 0.000 claims abstract description 14
- 239000007788 liquid Substances 0.000 claims abstract description 14
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 claims abstract description 12
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 9
- 239000000843 powder Substances 0.000 claims abstract description 9
- UOCLXMDMGBRAIB-UHFFFAOYSA-N 1,1,1-trichloroethane Chemical compound CC(Cl)(Cl)Cl UOCLXMDMGBRAIB-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000004342 Benzoyl peroxide Substances 0.000 claims abstract description 6
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 claims abstract description 6
- 235000019400 benzoyl peroxide Nutrition 0.000 claims abstract description 6
- 238000002156 mixing Methods 0.000 claims abstract description 3
- 239000000203 mixture Substances 0.000 claims abstract description 3
- 238000001035 drying Methods 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims 1
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 abstract description 2
- 229960001701 chloroform Drugs 0.000 abstract description 2
- 238000013019 agitation Methods 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 239000003960 organic solvent Substances 0.000 abstract 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 abstract 1
- 239000004926 polymethyl methacrylate Substances 0.000 abstract 1
- 239000011369 resultant mixture Substances 0.000 abstract 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 238000005476 soldering Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Classifications
-
- 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
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
-
- 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
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
-
- 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
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/3612—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest with organic compounds as principal constituents
- B23K35/3616—Halogen compounds
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
Description
Předmětem vynálezu je způsob výroby koncentrovaného pojivá, určeného pro smísení s pájecím práškem, aby dobře přilnul k přemětům, určsným k pájení. Vynález se rovněž týká způsobu výroby koncentrovaného pojivá, z něhož je možno zředěním získat uvedené pojivo, jakož i takto vyrobeného pojivá a koncentrovaného pojivá.It is an object of the present invention to provide a concentrated binder to be blended with a brazing powder to adhere well to brazing objects. The invention also relates to a process for the production of a concentrated binder from which the binder can be diluted by dilution, as well as the binder thus produced and the concentrated binder.
Při pájení plechů se na ně nanáší, zejména za použití stříkací pistole, pájecí prášek, předběžně smísený s pojivém, aby získal nutnou kohezi a přilnavost.When brazing sheets, solder powder, premixed with a binder, is applied to them, in particular using a spray gun, to obtain the necessary cohesion and adhesion.
Pojivá, nyní používaná k tomuto účelu, jsou organické deriváty, které zanechávají na plechu usazeniny uhlíku, vznikající při vysoké teplotě při pájení; uhlíkové usazeniny způsobují při vysoké teplotě, při níž pájení probíhá, změnu struktury plechů v místech spájení; zejména mechanické vlastnosti a schopnost pájení jsou tím značně sníženy.The binders now used for this purpose are organic derivatives that leave carbon deposits on the sheet resulting at high brazing temperatures; carbon deposits cause a change in the structure of the sheets at the brazing points at the high brazing temperature; in particular, the mechanical properties and soldering capability are greatly reduced.
Účelem vynálezu je, odstranit výše uvedené nevýhody a poskytnout nové pojivo, umožňující pájecímu prášku dokonale přilnout k plechu během nanášení, kteréžto pojivo však úplně vymizí, jakmile teplota dosáhne hodnoty, která je značně nižší než obvykle používané teploty při pájení.The purpose of the invention is to overcome the above disadvantages and to provide a new binder allowing the brazing powder to adhere perfectly to the sheet during application, but the binder completely disappears when the temperature reaches a value which is considerably lower than the brazing temperatures normally used.
Nové pojivo se získá z koncentrovaného pojivá, které se podle vynálezu vyrobí smí2 sením kapalného methylmethakrylátu, kapalného trichlorethanu, kapalného chloridu uhličitého a práškového benzoylperoxidu, zhomogenizováním získané kapalné směsi mícháním a jejím vysušením.The novel binder is obtained from a concentrated binder, which according to the invention is prepared by mixing liquid methyl methacrylate, liquid trichloroethane, liquid carbon tetrachloride and benzoyl peroxide powder, homogenizing the obtained liquid mixture by stirring and drying it.
Při příkladném provedení způsobu podle vynálezu, kterým se získá pojivo optimálních vlastností, se složky smísí v těchto poměrech: 40 ml methylmethakrylátu, 40 ml trichlorethanu, 16 ml chloridu uhličitého a 0,34 g benzoylperoxidu. S výhodou se použije monomeru methylmethakrylátu.In an exemplary embodiment of the process of the invention to obtain a binder of optimum properties, the components are mixed in the following proportions: 40 ml methyl methacrylate, 40 ml trichloroethane, 16 ml carbon tetrachloride and 0.34 g benzoyl peroxide. Preferably, the methyl methacrylate monomer is used.
Sušení se příkladně provádí při teplotě v rozmezí 47 až 53 °C po dobu asi 15 až 20 hodin.The drying is carried out, for example, at a temperature in the range of 47-53 ° C for about 15-20 hours.
Takto získané koncentrované pojivo se může zředit přibližně desetinásobným objemem trichlormethanu, než je objem koncentrovaného pojivá, k získání produktu vhodného k použití jako pojivo pájecího prášku.The concentrated binder thus obtained may be diluted with approximately ten times the volume of trichloromethane than the volume of the concentrated binder to obtain a product suitable for use as a brazing powder binder.
Jakmile se teplota před spájením zvýší, dojde k úplnému vytékání pojivá při teplotě kolem 300 °C bez zanechání jakýchkoliv stop uhlíku na plechu. Tím se zcela zabrání výše uvedeným nedostatkům, to je snížení mechanických vlastností a schopností pájení plechu, protože uhlík již není přítomen v okamžiku, kdy dochází ke spájení při teplotě nad 800 °C.As the temperature rises prior to brazing, the binder completely flows out at a temperature of about 300 ° C without leaving any trace of carbon on the sheet. This completely avoids the aforementioned drawbacks, i.e., decreasing the mechanical properties and brazing properties of the sheet, since the carbon is no longer present at the time of soldering above 800 ° C.
Při kontrolní zkoušce dobré jakosti pojiva, získaného způsobem podle vynálezu, se odebere vzorek pojivá, který se zahřívá při teplotě 100 až 120 °C až do odpaření; má-li toto pojivo uspokojivou jakost, je získaný suchý zbytek průsvitný a jeho hmotové množství činí přibližně 1 % hmotnosti původního vzorku.In the control test of good binder quality obtained by the process of the invention, a binder sample is taken and heated at a temperature of 100 to 120 ° C until evaporation; if the binder is of satisfactory quality, the dry residue obtained is translucent and its mass amount is approximately 1% by weight of the original sample.
Je samozřejmé, ’ že se vynález neomezuje na příkladné provedení, ale zahrnuje všechny obměny, k nimž lze dospět.It goes without saying that the invention is not limited to the exemplary embodiment but encompasses all variations that may be made.
Claims (4)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7423226A FR2276898A1 (en) | 1974-07-02 | 1974-07-02 | BINDER FOR BRAZING POWDER AND METHOD OF MANUFACTURING |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CS196277B2 true CS196277B2 (en) | 1980-03-31 |
Family
ID=9140865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS471475A CS196277B2 (en) | 1974-07-02 | 1975-07-02 | Method of making the concentrated binder |
Country Status (4)
| Country | Link |
|---|---|
| CS (1) | CS196277B2 (en) |
| DE (1) | DE2524362C2 (en) |
| FR (1) | FR2276898A1 (en) |
| GB (1) | GB1483568A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI77589C (en) * | 1985-01-09 | 1989-04-10 | Gss General Sea Safety Ltd Oy | UNDERVATTENSFOERGRIPNINGSFOERFARANDE OCH -MEDEL. |
| CN114952077B (en) * | 2022-04-14 | 2024-06-21 | 天诺光电材料股份有限公司 | Composite brazing paste and preparation method and application thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1123419B (en) * | 1960-09-27 | 1962-02-08 | Degussa | Method for bonding metals |
| US3661595A (en) * | 1970-02-16 | 1972-05-09 | Coors Porcelain Co | Composition for metalizing ceramic |
-
1974
- 1974-07-02 FR FR7423226A patent/FR2276898A1/en active Granted
-
1975
- 1975-06-02 DE DE19752524362 patent/DE2524362C2/en not_active Expired
- 1975-06-19 GB GB2619175A patent/GB1483568A/en not_active Expired
- 1975-07-02 CS CS471475A patent/CS196277B2/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE2524362C2 (en) | 1986-08-28 |
| GB1483568A (en) | 1977-08-24 |
| FR2276898B1 (en) | 1976-12-24 |
| DE2524362A1 (en) | 1976-01-22 |
| FR2276898A1 (en) | 1976-01-30 |
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