Single layers spray paint Teflon Coating for cookware / Ptfe non stick coating

test item

test method

standard

appearance

visual

4 liquid type(A,B,C, D)

gloss

gloss meter(WGG60-E4)

≥40°

adhesive force at normal T(100-grid test)

Grid method: Cut through the coating   surface vertically and horizontally to form grids. Cutting gap: 2.0mm. Stick 3M-898 adhesive   tape to surface and no obvious crack between cutting.

adhesive force level 1

surface hardness

scratch the surface with Mitsubishi   pencil at 45º with 10N(1KG)for 10   mm

≥6H

heat resistance

heated for 24 hr at 300℃ in constant temperature oven

adhesive force level 1

abrasive resistance

under pressure of 15N (1.5KG),scouring   pad(3cm×8cm) moves   on coating surface for 10cm, and change scouring pad every 1000 times (every back and forth counted as   once)

No bottom worn out after 15000 times

alkali resistance

Soaked in 3% sodium carbonate   solution for 24 hr, solution volume is more than 1/3 volume of the container

no obvious change visually

acid resistance

Soaked in 3% hcl solution for 24 hr,   solution volume is more than 1/3 volume of the   container

no obvious change visually

butanone resistance

Brush the surface with white cloth soaked   in butanone( MEK)

No change and fastness

cold and hot resistance

heat the base material to 300 ℃ for 5-10 minutes and put it into cold   water suddenly as a cycle , 5 times

no obvious change visually as well as   fall off and crack

boiling water resistance

boiled for 24 hr and scratch the grid

no bump, fall off   and fastness

hcl resistance test

Soaked in 5% Nacl solution for 72h

No bump and fall off

fragility

after painting and sintering, coating of   painted object will not fall off when painted object was punched or edged

No fall off and crack caused by impact or   shape change

non-stickiness(frying egg)

fry   egg white without adding cooking oil at 170℃~200℃ for   5 times

non-stick