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WEICON Contact VA-300(VA300瞬干胶)氰基丙烯酸盐粘合剂
发布者:admin  更新时间:2012/7/5 22:47:12
 

WEICON Contact VA-300 30 g Technical Datasheet
Create Date: 05.07.2012 - Page 1/1
Introduction
WEICON Contact Cyanoacrylate Adhesives are cold curing
one-component adhesives, free of solvents. They quickly polymerise
by reacting with moisture both on the surfaces to be bonded and from
the air, and cure under light pressure.
- higher viscosity, 200-300 mPa·s

- longer curing

- suitable for absorbing and porous materials such as wood, cork,
leather and ceramic

- also suitable for bonding metals, plastics and rubber to and among

each other
Technical data
Ester type                                                   Ethyl
Condition / nature                                      colourless, clear liquid
Viscosity at +20°C Brookfield                      200-300 mPa·s
Max. gap                                                     covering 0,15 mm
Initial adhesion on Aluminium                       60-90 sec.
Initial adhesion on Nora test rubber            2-10 sec.
Initial adhesion on Rigid PVC                       10-60 sec.
Final strength after                                        24 h
Pretreatment of the surface
- To ensure a perfect bonding, the surfaces to be joined must be clean
and dry (to clean and degrease use e.g. WEICON Cleaner S).
- Smooth surfaces should be mechanically roughened.
Processing
- Apply WEICON Contact Cyanoacrylate Adhesive only on one of the
surfaces to be bonded.
- The bond line should be between 0.05 mm and max. 0.2 mm in
thickness. Otherwise complete hardening cannot be guaranteed.
- For bonding large surfaces WEICON Contact Cyanoacrylate
Adhesive should be applied drop by drop to avoid inner tensions.
- WEICON Contact Cyanoacrylate Adhesives are very economical.
One drop is sufficient to cover approx. 3 - 5 cm² of bonded surface.
- The parts to be joined should be bonded in an atmosphere of 40 - 80
% relative humidity. In conditions of below 40%, the cure will be
considerably slowed or even inhibited. With a relative air humidity of
more than 80% or with basic substrates (e.g. glass), shock-curing can

VA 20,VA 30 Black ,VA 8312 ,VA 8406 ,VA 100 ,VA 300 ,VA 1401 ,VA 1500 ,VA 2500 HT ,VA 250 Black Contact Gel ,VA 1408 ,VA 1460 ,VA 1403 ,VM 20 ,VM 120 ,VM 2000

WEICON Contact  氰基丙烯酸盐粘合剂(俗称万能胶、瞬干胶)
一种低温固化,单一成分,易于溶解的粘合剂,它们能够在两个粘接面之间的潮气的作用下迅速聚合。在很轻的压力下完成固化粘接。它们能够在短时间内粘接所有的材料,如金属、塑料、玻璃、陶瓷、木头、皮革、天然或者合成橡胶等各种材料粘结在一起,也可使它们彼此粘接。
 
WEICON瞬间粘合剂能够提供很高的粘接强度,耐高温范围为:-50℃到+135℃,而且能够抵御各种化学试剂的腐蚀。通过大量的实例分析,它的粘接处的牢固程度比粘接材料(材料断面)本身还要好。广泛的系列产品可以满足各种不同场合的应用要求,不同的产品因为它们的化学成份和粘性的不同而不同。

这类胶黏剂适用在快速粘接、施工范围比较小、比较精细的地方适用,因为这种胶水固化时间比较短,适用环境湿度对其影响比较大,不太适用在有震动的地方,这种瞬干胶固化后比较脆(我们有些特殊粘合剂可以打到要求),例如:VA1408/VA1460/1403 瞬干胶固化后无潮气和雾化现象等,以后文章中会介绍到这些特殊瞬干胶产品。
本文关键词:WEICON Contact VA-300(VA300瞬干胶)氰基丙烯酸盐粘合剂
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