PTA-85/PTA-170 PTA
is an amorphous condition aqueous solution. PTA does not have any
photocatalytic function under room temperature unless it is heated
to more than 250C A very fine titanium dioxide film can be made on a
surface at room temperature. It can be used as a protection layer
for an organic substrate. PTA-85 is suitable for spray coating and
PTA-170 is used for dip coating. When it is heated to more than 250C
the amorphous condition becomes a structure of anatase crystal. Heat
treatment of more than 800C changes the anatase crystal to rutile
causing its photocatalytic effect decrease. PTA-85 is recommended to
use for producing photocatalytic tile.
TO-85/TO-240
TOsol differs from PTA. It is already crystallized and shows the
photocatalytic activity when it is coated and dried. In case of flat
and smooth surface the TO coated to the substrate comes off as a
powder when rubbed with a finger because TOsol cannot form a
hardness film. However, the hardness of the film coated with TiO2
can be improved when it is heated to a certain temperature. TO-85
and TO-240 are suitable for dip coating. Spray coating also be used.
TO is already crystallized to anatase so that it shows the
photocatalytic function when it is coated and dried at room
temperature. However, it is more efficient to conduct high
temperature heat treatment that corresponds to the substrate in
order to improve its various activities and adhesion.
TPX-85/TPX-220
TPX is a mixed solution of PTA and TO. A film coated TPX achieves
photocatalytic effect and hardness strength of the film can be made
after drying at room temperature. TPX is a neutral solution that can
be applied to various materials including metal and resin. A coated
film with TPX never dissolves in water. Photocatalytic effect and
hardness of the film can be increased when it is heated. Spraying
coating is the most suitable way for TPX. But substrates can be
dipped into the TPX liquid or applied by brush. The film's hardness
decreases when it is not sufficiently dried. Photocatalytic activity
and the hardness of the coated film can be increased when it is
heated within the permissible high temperature of the substrate. A
coated film does not decrease the hardness due to the time change.
SITPA
mark is issued by Technical Consultation Committee of
Photocatalyst Product. Technical Committee of Photocatalyst
Product has technical guide lines to examine various
photocatalyst products. It is required to pass several severe
tests to obtain the SITPA mark.
PTA
is an amorphous condition aqueous solution. PTA does not have any
photocatalytic function under room temperature unless it is heated
to more than 250C A very fine titanium dioxide film can be made on a
surface at room temperature. It can be used as a protection layer
for an organic substrate. PTA-85 is suitable for spray coating and
PTA-170 is used for dip coating. When it is heated to more than 250C
the amorphous condition becomes a structure of anatase crystal. Heat
treatment of more than 800C changes the anatase crystal to rutile
causing its photocatalytic effect decrease. PTA-85 is recommended to
use for producing photocatalytic tile.
