Polyester Resin Z-351
(Equivalent to Ekonol Resin)
Polyester Resin Z-351( equivalent to Ekonol Polyester Resin ) is
homopolymers based on P-oxybenxol repeat units and are linear thermoplastics
with molecular structure as follows :
Name: POLY-P-OXYBENXOATE ; P-OXYBENXOYL HOMOPOLYESTER
CAS No: 26099-71-8
mainly for high temperature molding, cold molding and sintering with
PTFE resin, also for plasma spray coating
Z-351(II) mainly for plasma spray coating, flame spray coating, etc.
temperature: 530 ℃
No softening below 400 ℃
Continuous work temp. 300 ℃
wear resistance and self-lubrication
to graphite, MoS2, it has extraordinary self-lubricating performance.The
kinetic friction coefficient is 0.16-0.32 that achieves lubricant-less
lubrication.It is with good resistance to wear and without hurt
at counter surface of friction pair in working and also with good
resistance to compression wriggle.
thermal conductivity as well as dielectric properties
thermal conductivity is 3 -5 times to other plastics such as PTFE
and the dielectric properties is also good.
Volume resistivity 1.2 X 1017Ohm.cm
Dielectric loss tangent 3.5-6.4 X 10-3
in most organic solvents even under heating (with the exception
of concentrated sulfuric acid and strong alkalis).
Ekonol Polyester is easy to be processed, and widely used in the
areas of machinery, electronics and electric equipment.
less than 12 um
less than 12 um
||9, 000-70, 000
||6, 500-70, 000
Loss in Air, 400 ℃, 1 hour
more than 2.0 %
more than 3.0 %
and electrical properties of Z-351(I) Ekonol Resin for moulding
aging for 15 hours at 300 ℃
aging for 300 hours at 300 ℃
Strength (no gap)
aging for 151 hours at 300℃
Loss in air for 1 hour at 400 ℃
Constant (60 Hz)
X 10(17) ohm.cm
loss tangent (60 Hz)
light industry and chemical industry
as lubricant-less bearings, piston rings, pads, sealings, packings etc.working
at high temperature, or under water/or in moisture and vapor.
---Compounded with PTFE powder to make bridge slides.
electronics, electric equipment and instruments industries
plugs, sockets, spools, motor parts, printed circuit boards.Due to its
excellent thermal conductivity as well as insulation properties, the
parts of Ekonol Polyester Resin is able to efficiently remove the
heat generated in electronics'operation so that avoid damages from
Blends of Ekonol Polyester Resin with soft metal powder could be
plasma sprayed and form jet motor's wearable sealing coat, which
could dramatically elongate the motor's ages and improve the working
efficiency.Besides, Ekonol Polyester could be used in lubricantless
coating, anti-corrosion coating and anti-stick coating.
conditions: 360 ℃-400 ℃ under pressure of 400-1000 KG/cm2
for 3 -5 minutes.
With good mechinability, the moulded articles could be further machined
into mechanical parts.Fillers, such as Al2O3, short-cut carbon fabric, short-cut
glass fabric, can be used to improve its strength.
The finished articles of Ekonol Polyester Resin or of the resin
with fillers are mainly used as heat-resistant insulators, self-lubricating
bearings resistant to heat and wear, and radiation-resistant parts.
Z-351 Resin could be compounded with PTFE resin in any proportion
and can be molded like PTFE resin.The Z-351/PTFE composite integrate
the two materials'advantages and overcome PTFE's shortage of poor
wear resistance and cold wriggle.Testing data show that PTFE filled
with 20-30 % Aromatic Polyester Resin has much higher maximum PV
value than pure PTFE and Ekonol Resin.Blending with Ekonol (Aromatic
Polyester) Resin can greatly improve PTFE's compression set, compressive
strength, wear resistance while the friction coefficient remains.
The process includes following steps:
Blending the two materials to make fine composition.Recommended
Ekonol Polyester Resin's proportion is 20-30 %. Other fillers could
be used according to applications.Normally used are molybdenuym
disulfide, graphite, glass fabric, carbon fiber, bronze powder, etc.
II. Molding pressure 400-1000 KG/cm2
Sintering temperature around 375 ℃.Sintering time depends on
the surface to be coated, load the plasma sprayer with Ekonol Polyester
powder (sometimes mixed with soft metal).Then spray the resin on
the surface at high speed to form coat layer.The object to be coated
could be metal (Iron, Al, Ti, etc), or plastics, ceramics, etc..Mixed
with soft metal (Al, Al-Si alloy), the resin can form coat layer
with wide range of hardness.In addition, this process requires neither
using solvent nor further sintering, and there is no limitation to
coat's thickness.After spraying, the articles can be machined or
to PTFE, Ekonol Polyester can also be used in dispersion coating
that achieve better wear resistance and friction properties than
pure PTFE.Besides, the Ekonol Polyester dispersion forms thicker
coat layer in every single operation than PTFE that lead to shorter
operating cycle and lower cost.The Ekonol Polyester dispersion is
made by dispersing Ekonol Polyester Resin in PTFE suspension.
includes following steps:
Pretreat the surface to be coated.
II. Coat the surface with organic fluoride as ground coat
III. After drying and sintering the ground coat, proceed to Ekonol
Polyester dispersion coating.Repeat the operation until reaching
the required coating thickness.
condition: 90-100 ℃, 30 minutes.
Sintering condition: 380 ℃, 15 minutes
Ekonol @ is a Registered Trademark of Carborundum Co.