Thick Film Coating – Thermal Cure
For high performance
Optimal Protection for extreme demands
BECTRON® PK.. series is a one-component resin system which cures to form a thermoset
plastic. The resin comprises special technology in a pre-mixed resin and hardener system which
offers a range of viscosities which cure rapidly at +90 °C or Infra Red radiation to form solids
with one of four different hardness levels.
As a 1 component product BECTRON® PK.. is ready to use avoiding issues of mixing ratios or
pot life of 2 component systems but with no compromise on the excellent properties and,
particularly, an environmentally friendly formulation.
Coatings of the PK resin series are used in the low viscosity version for select or swirl coating
of PCBs or hybrids giving excellent edge covering under the coating layer. The high viscosity,
thixotropic grades can be used for encapsulation of small components on the PCB. A combination
of thixotropic and low viscosity grades allows Dam + Fill application “wet on wet” to
achieve a thicker film needing only one curing cycle, which may be completed in only a few
minutes under Infra Red radiation.
Continued on back
Thick Film Coating – Thermal Cure
BECTRON® Thick Film Coatings of the PK series when cured display high elasticity and strength
producing excellent temperature cycling behaviour within the range of -50 °C to +125 °C as
well as resistance to vibration. This ensures no crazing even in thick fi lm layered applications.
The curing generates no heat (no exotherm) and minimal shrinkage poses no risk to sensitive
components. Furthermore BECTRON® PK series has good adhesion to almost all materials used
in electronics.
One component / “Ready to use”
Zero VOC / 100 % solids
Environmentally friendly / non-hazardous classifi cation
Resistant to temperature cycling from -50 °C to +125 °C
Glass transition temperature Tg < -60 °C
Resistant to the usual car fl uids
BECTRON® PK-Series (1 Component, heat-curing)
Product
Code
Colour Viscosity
mPas
Max Temp.
ºC/20.000 h
Hardness
Shore
Cure Speed
min
@ +90 ºC
Thermal
Conductivity
W/mK
PK 4332 Black 5,250 +125 ºC 35 A 60 0.2
PK 4340 Black 9,500 +125 ºC 70 A 30 0.3
PK 4342 Black 5,000 +125 ºC 70 A 30 0.3
PK 4344 Black 2,000 +125 ºC 70 A 30 0.3
PK 4351 Black 6,250 +125 ºC 30 D 30 0.3
PK 4353 Black 3,750 +125 ºC 30 D 30 0.3
PK 4364B Blue 5,000 +125 ºC 40 D 30 0.3
PK 5532 Black 5,500 +130 ºC 35 A 30 0.2
PK 5542 Black 5,000 +130 ºC 70 A 30 0.4
PK 5553 Black 3,500 +130 ºC 30 D 30 0.3
Version 10/2017 Insert 5
Thick Film Coatings BECTRON® PK ..xx-Matrix
ELANTAS Europe GmbH
Grossmannstr. 105 · 20539 Hamburg · Germany
Tel.: +49 40 78946 0 · Fax: +49 40 78946 360
E-Mail: bectron.elantas.europe@altana.com
Internet: www.elantas.com/europe
PK ..32
PK ..40
PK ..42
PK ..44
PK ..51
PK ..53
PK ..64B
Viscosity
very soft
35 Shore A
Thixotropic
10,000
medium
5,000
low
2,500
soft
70 Shore A
medium hard
30 Shore D
hard
40 Shore D