Qinhuangdao Bright Chemical Co., Ltd.
Main products:organic fluoro surfactants,electroplating chemicals,special fine chemicals,N-Ethylcarbazole ( CAS No 86-28-2),N-Ethylcarbazole ( CAS No 86-28-2)
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  • Contact Person : Mr. Lu James
  • Company Name : Qinhuangdao Bright Chemical Co., Ltd.
  • Tel : 86-335-7636676
  • Fax : 86-335-7636679
  • Address : Hebei,Qinhuangdao,9-1-203, Tianyang New city, Qinhuangdao , Hebei , China
  • Country/Region : China
  • Zip : 066001

8031Cathodic Polyurethane(PU) Electrophoretic Lacquer

8031Cathodic Polyurethane(PU) Electrophoretic Lacquer
Product Detailed
It owns the properties of acrylic electrophoretic lacquer, and improve the stability and easy-operation of work solution

It owns the properties of acrylic electrophoretic lacquer, and improve the stability and easy-operation of work solution,  coating film is highly gloss and transparent, it doesn’t charge color into yellow, mixing with various color paste to get colorful coating film, suitable for coating for light decorations, sanitary appliance, glass, decorative hard ware for inner-room, zipper, bike etc.

It has no special limitation about base materials, such: gold, silver, axletree, nickel, zinc plating deposit etc, as well as aluminum, stainless steel, iron and zinc alloy etc.

Properties:

High work stabilityHigh hardness, it can be up to 4H, low baking temperature (at 150°C)Good resistance to salt-spray testGood resistance to sweatStrong combination ability of bottom and surface.Good color fastnessHigh glossGood tolerance to solvent

Specification:

Item

Index

Appearance

Yellowish viscous liquid

Solid content

60±2%

Solvent volume

8±1%

Viscosity ( @25°C)

9400cs

Suggested storage temp.

15~28°C

Suggested storage time

6 months

Performance of coating film

Item

Test method

Value

Color

Full range

Harness

5-15u

Pencil harness

ASTM D3363

3-4H

Adhesion strength

ASTM D3359

100/100

Anti-impact test

ASTM D2794

1/2w×1kg×50cm

Salt-spray test

ASTM B117

168hrs(pls see note 1)

Anti-boiling water test

24hrs

Anti –MIBK scratch

ASTM D-4752

270times

Anti-acetone scratch

ASTM D-4752

40times

Alcohol immersion

15’s(pls see note 2)

Note 1 workpiece is zinc phosphate (Zn3(PO4)2) standard plate, coating film make a cross scratch, film thickness10-12um.

Note 2 coating film after immersing can be picked up by hand nail.

Operation condition

Index 

Value

Solid content

7-10%

Work bath temp.

26-30°C

Operation voltage

25-150V

Operation time

15-45’s

Backing condition

20-30min. ( at 150°C)

Valid coating film

15um

Pole plate area ratio ( pls see note)

2.1-1.1

Note: Pole plate area ratio------- cathode area:anode are, (workpiece as cathode), anode area influence uniformity of coating film largely. When making color lacquer electrophoresis, if anode area is too large, it will result in color difference. If it is equipped with anode container, valid area is about 80% of naked area

Bath make-up

 ( take electrophoresis tank 1MT as sample)

Weight (kg)

8031

140

Pure water

860

Total

1000

Test result

Solid content

10.1%(3hrs @105°C)

PH

4.3

Conductance

495us/cm

Solvent volume

3.74%

Tank temp.

27°C

conductance Pure water

10us/cm

Conductance for water-rinsing tank

50us/cm

Note: coating film and transparency will change with solid content, conductance, solvent and temperature.

Work Bath control ( tank lacquer)

PH

4.1-4.6

Solid content

7-10%

Conductance

45-55us/cm· (solids)

Replenishment

* Electrophoretic lacquer  add pure water or bath solution while agitating, when resin disperses evenly, then add lacquer tank. ( it is not permitted to add 8031 original lacquer into lacquer tank.)

*  Solven R-810 can be added into lacquer tank directly without diluting, R-811 is hydrophobic solvent, it will take long to mix together with tank lacquer, or else it results in oil point (crater),

* Auxiliary agent  dilute it with pure water at ratio 1:4 before adding, it can’t be added directly.

8031Cathodic Polyurethane(PU) Electrophoretic Lacquer



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