CN101565592A - Strippable welding protection adhesive - Google Patents
Strippable welding protection adhesive Download PDFInfo
- Publication number
- CN101565592A CN101565592A CNA2009101479489A CN200910147948A CN101565592A CN 101565592 A CN101565592 A CN 101565592A CN A2009101479489 A CNA2009101479489 A CN A2009101479489A CN 200910147948 A CN200910147948 A CN 200910147948A CN 101565592 A CN101565592 A CN 101565592A
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- Prior art keywords
- strippable
- welding protection
- protection adhesive
- welding
- adhesive
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Abstract
The invention relates to an adhesive, especially a strippable welding protection adhesive which protects the portion not required to be welded on a printed wiring board in an electronic industry wave soldering process, i.e. welding resistance adhesive. The welding protection adhesive is in paste form, not limited by the printed wiring board, coated optionally, easy for stripping after welding without residues and color difference and adopts the environment friendly aqueous emulsion as main resin and mates with inorganic filler, thickening agent, cross linker and age resister.
Description
Technical field
The present invention relates to a kind of tackiness agent, the particularly a kind of a kind of strippable welding protection adhesive of electronic industry wave soldering technology to not wishing on the printed-wiring board (PWB) that soldered position is protected that be used for also claims welding resistance glue.
Background technology
When printed wiring was assembled, what a part adopted was wave soldering technology, before wave soldering, need protect the soldered position of not wishing individually on the printed circuit board (PCB), and this guard method at present mainly contains two kinds:
A kind of Pressure sensitive adhesive tape that is to use is pasted covering, but after wave soldering was finished, adhesive tape not only was not easy to be stripped from, and residual colloid makes printed circuit board surface be clamminess, and pasted the position of adhesive tape and other regional colors have evident difference, influence the aesthetic quality of product.
Another kind method just is to use welding resistance glue.Before wave soldering, strippable welding protection adhesive is coated in the position that needs protection uniformly, after film forming, carry out wave soldering technology, after welding is finished, welding resistance glue is peeled off from printed circuit board (PCB).
But according to the present this welding resistance glue of recognizing or similar compositions such as publication number is CN101124258A, an open day 2008-02-13, the application people Chinese patent application for Showa Denko K. K, it is a kind of heat cured composition, not only need higher temperature to be cured (generally more than 120 ℃), and its main component is a Resins, epoxy, its content of halogen is too high, with and the environment-friendly electronic tide of a new ripple---halogen (Halogen-free) sweeps across electronic industry:
22-23 day May calendar year 2001, signed " about persistence organic pollutant (POPs) control Convention of Stockholm " by 91 national government, almost be halide-containing all in listed 12 kinds of persistent pollutants (POP) in this pact.
On January 27th, 2003, parliament of European Union and EU Council have passed through the 2002/95/EC instruction, promptly " some objectionable impurities instruction is used in restriction in electronic electric equipment " (The Restriction of the useof Certain Hazardous Substances in Electrical and ElectronicEquipment) is called for short the RoHS instruction.Substance is: from July 1st, 2006, in the electronic electric equipment product of newly putting on market, lead, mercury, cadmium, sexavalent chrome, Polybrominated biphenyl (PBB) and polybromodiphenyl ether six kinds of objectionable impuritiess such as (PBDE) were used in restriction.After the RoHS instruction issue, become formal law in European Union's scope from February 13rd, 2003; Before 13 days Augusts in 2004, EU member country conversion cost state law/rules; After 1 day July in 2006, will forbid formally on the European Union market comprising that the product that six class substances content of brominated flame retardant (except the exemption) exceed standard sells.
EU Committee has also issued 2003/IIEC instruction regulation on February 15th, 2003, since on August 15th, 2004, bans use of pentabromodiphenyl oxide and octabromodiphenyl ether.
International Textile ecological study and the revised editions in 2005 that detect the Standard-100 of association (Oeko-Tex) promulgation are also classified these two kinds of compounds as the forbidding scope.
International Power association (IEC) is defined as about the rules IEC 61249-2-21 to the halogen quantity limitation: control limit value: Cl＜900ppm, and Br＜900ppm, both sums can not be greater than 1500ppm.
Although can be considered a kind of matured product that can produce in batches so have, the content of halogen of this product has mostly exceeded above-mentioned scope in the market, does not meet international and domestic relevant laws and regulations and environmental protection requirement.
Summary of the invention
At the problems referred to above that exist, purpose of the present invention just be to provide a kind of paste, be not subjected to that the printed circuit board (PCB) shape is restriction, that can arbitrarily smear, the glued membrane after the welding is peeled off easily and there do not have to be residual, can not produce the comparatively cheap welding protection adhesive of aberration, price.
The present invention adopts the water-based emulsion with feature of environmental protection as matrix resin, forms with addition of mineral filler, thickening material, linking agent, anti-aging agent, and its weight proportion is:
Water-based emulsion 65-96.8%
Mineral filler 3-20%
Thickening material 0.1-5%
Linking agent 0-5%
Anti-aging agent 0.1-5%.
It is good that water-based emulsion is chosen to film properties, the emulsion that tensile strength is high, for example, and ACRYLIC EMULSION, the butyronitrile rubber emulsion, nature rubber latex etc., for rate of drying and film forming thickness are preferably arranged, we need select solids content to be higher than 60% emulsion; The fineness of mineral filler can be selected talcum powder for use greater than 325, mica powder, and silicon powder etc., being mainly used in increases glued membrane intensity; Anti-aging agent more options phenols protective agent; Thickening material can be selected gum arabic, sodiun alginate, high molecular weight acrylic salt etc.; Linking agent can select to select for use rubber vulcanizing agents such as sulphur, zinc oxide.
Welding resistance glue with this invention preparation is flowable liquid; can adopt brushing; spot printing; modes such as blade coating apply; the easy film forming of used water-based emulsion has elasticity and tensile strength preferably, and dried glued membrane has peelable preferably performance and pyro-oxidation resistance; but also the content of halogen that makes product is controlled within the limit value, is the comparatively cheap welding protection adhesive of a kind of environmental protection, price.
Embodiment
Embodiment one:
Nature rubber latex 96.8%
Talcum powder 3%
Gum arabic 0.1%
Phenolic type antioxidant 0.1%
Embodiment two:
Nature rubber latex 65%
Talcum powder 20%
Gum arabic 5%
Phenolic type antioxidant 5%
Zinc oxide 5%
Embodiment three:
ACRYLIC EMULSION 76%
Mica powder 15%
Sodiun alginate 3%
Phenolic type antioxidant 3%
Sulphur 3%
Embodiment four:
Acrylonitrile-butadiene rubber latex 74%
Silicon powder 19%
High molecular weight acrylic salt 2%
Phenolic type antioxidant 1%
Zinc oxide 4%
Embodiment five:
Acrylonitrile-butadiene rubber latex 82.2%
Silicon powder 15.3%
High molecular weight acrylic salt 1.5%
Phenolic type antioxidant 1%
Embodiment six:
Nature rubber latex 73.8%
Mica powder 18%
Sodiun alginate 2%
Phenolic type antioxidant 4%
Zinc oxide 2.2%
The foregoing description is also non exhaustive.The underfill of gained has following technical indicator:
Outward appearance: rice white or lightpink pasty state liquid, can flow.
Solid content (non-volatile part):＞60%
Viscosity: 10000-50000cps
Mobile: 0mm
Rate of drying (film thickness 1mm): following 30 minutes of normal temperature; 120 ℃ following 3 minutes
Heatproof: 260 ℃ following 60 seconds
Shelf lives: 6 months.
Claims (5)
1, a kind of strippable welding protection adhesive is made up of water-based emulsion, mineral filler, thickening material, linking agent, phenolic type antioxidant, and its weight proportion is:
Water-based emulsion 65-96.8%
Mineral filler 3-20%
Thickening material 0.1-5%
Linking agent 0-5%
Anti-aging agent 0.1-5%.
2, a kind of strippable welding protection adhesive according to claim 1, the solids content of its water-based emulsion is higher than 60%, can select nature rubber latex, ACRYLIC EMULSION, acrylonitrile-butadiene rubber latex for use.
3, a kind of strippable welding protection adhesive according to claim 1, its mineral filler can be selected talcum powder, mica powder, silicon powder for use, and its fineness is greater than 325 orders.
4, a kind of strippable welding protection adhesive according to claim 1, its thickening material can be selected gum arabic for use, sodiun alginate, high molecular weight acrylic salt.
5, a kind of strippable welding protection adhesive according to claim 1, its linking agent can be selected rubber vulcanizing agents such as sulphur, zinc oxide for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009101479489A CN101565592A (en) | 2009-06-11 | 2009-06-11 | Strippable welding protection adhesive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009101479489A CN101565592A (en) | 2009-06-11 | 2009-06-11 | Strippable welding protection adhesive |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101565592A true CN101565592A (en) | 2009-10-28 |
Family
ID=41281964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009101479489A Pending CN101565592A (en) | 2009-06-11 | 2009-06-11 | Strippable welding protection adhesive |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101565592A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102101991A (en) * | 2010-12-27 | 2011-06-22 | 青岛爱尔家佳新材料有限公司 | Aqueous wire coating adhesive and preparation method thereof |
| CN103338587A (en) * | 2013-07-10 | 2013-10-02 | 苏州联易昌工业材料有限公司 | Circuit board and fabrication technology thereof |
| CN103497608A (en) * | 2013-10-18 | 2014-01-08 | 烟台德邦科技有限公司 | Resistance welding glue with high strength and quick to dry and preparation method thereof |
| CN104201539A (en) * | 2014-09-04 | 2014-12-10 | 上海航天电子通讯设备研究所 | Method for tin coating of connector inserting pins |
| CN105670058A (en) * | 2016-01-21 | 2016-06-15 | 大连理工大学 | Automobile finish protection rubber film and making method thereof |
| CN108410262A (en) * | 2018-03-28 | 2018-08-17 | 生益电子股份有限公司 | Assist the ink special of back drill making and the back drilling method of PCB |
| CN111995905A (en) * | 2020-08-24 | 2020-11-27 | 桂林智熠感光材料科技有限公司 | Water-based thermosetting PCB (printed Circuit Board) circuit insulation solder resist ink and preparation method and use method thereof |
| CN112322112A (en) * | 2020-11-16 | 2021-02-05 | 中海油常州涂料化工研究院有限公司 | Water-based chemical milling temporary protective coating and preparation method thereof |
-
2009
- 2009-06-11 CN CNA2009101479489A patent/CN101565592A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102101991A (en) * | 2010-12-27 | 2011-06-22 | 青岛爱尔家佳新材料有限公司 | Aqueous wire coating adhesive and preparation method thereof |
| CN103338587A (en) * | 2013-07-10 | 2013-10-02 | 苏州联易昌工业材料有限公司 | Circuit board and fabrication technology thereof |
| CN103497608A (en) * | 2013-10-18 | 2014-01-08 | 烟台德邦科技有限公司 | Resistance welding glue with high strength and quick to dry and preparation method thereof |
| CN103497608B (en) * | 2013-10-18 | 2016-04-27 | 烟台德邦科技有限公司 | One has high strength and quick-drying welding resistance glue and preparation method thereof |
| CN104201539A (en) * | 2014-09-04 | 2014-12-10 | 上海航天电子通讯设备研究所 | Method for tin coating of connector inserting pins |
| CN105670058A (en) * | 2016-01-21 | 2016-06-15 | 大连理工大学 | Automobile finish protection rubber film and making method thereof |
| CN108410262A (en) * | 2018-03-28 | 2018-08-17 | 生益电子股份有限公司 | Assist the ink special of back drill making and the back drilling method of PCB |
| CN108410262B (en) * | 2018-03-28 | 2021-05-04 | 生益电子股份有限公司 | Special ink for assisting back drilling manufacturing and back drilling method of PCB |
| CN111995905A (en) * | 2020-08-24 | 2020-11-27 | 桂林智熠感光材料科技有限公司 | Water-based thermosetting PCB (printed Circuit Board) circuit insulation solder resist ink and preparation method and use method thereof |
| CN112322112A (en) * | 2020-11-16 | 2021-02-05 | 中海油常州涂料化工研究院有限公司 | Water-based chemical milling temporary protective coating and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20091028 |