Non-ionic Bowl Cleaner formula guideline

Bowl Cleaner

Formulation

#MaterialsWeight %
1.Water67.0
2.78% Phosphoric acid – Industrial grade4.0
3. Non-ionic surfactant*0.5
4.Acid thickener4.0
5.37% Hydrochloric acid solution24.5

Supply viscosity @ 20 deg C = 1750 cps

pH = 1.3

Specific Gravity @ 25 deg C = 1.049

Bulk density @ 25 deg C = 8.74

Suggested surfactant : Sulfonic N 150 (non-ionic)

http://alchemchemical.com/product-details/items/180.html

Lab testing methods for evaluation of a coating

  • Pigment testing as per IS 33
  • Solvent testing as per IS 82
  • Evaluation of paints and pigments
  • Testing plastic and rubber components
  • Salt spray resistance
  • Humidity resistance
  • Accelerated QUV weatherometer test
  • Bend test
  • Impact resistance test
  • Water analysis
  • Acid / alkali / fertilizer / water resistance tests
  • Cross hatch test
  • Glossmeter reading in 20 deg, 45 deg and 80 deg
  • Colour matching computer
  • Pencil hardness test
  • Metal pretreatment bath parameter maintenance
  • Sieve residue analyzer

Powder coating standards

For finishes made with Polyester epoxy powder coat on nano-treated mild steel components. All tests are conducted on panels as recommended in ASTM standards.

# Tests Parameters Test Methods
  Colour L*a*b readings of less than 0.3 under cool white light to RAL Shades Ref. RAL Shade cards
Gloss 60 +/- 10 at 60o at 1.5 mil ASTM D523
Hardness No film cut while gouging with a mechanical pencil using a 2H lead ASTM D3363
Adhesion or cross hatch test No loss of adhesion Class 5B ASTM D3359
Flexibility No cracking or peeling at 1/8” Conical Mandrel ASTM D522
Chemical and Stain Resistance Five drops of each reagent under a watch glass for 4 hours. There shall be no more than a trace of stain. Change in gloss shall not exceed standard. Reagents used: IPA, Nail polish remover, fizzy drinks like coke, Mustard, Tea, Coffee, 5% acetone ASTM D1308
Impact Resistance No peeling or loss of adhesion using adhesion tape. ASTM D2794
Salt Spray Resistance Min. 400 hours, no creeping corrosion ASTM B117
Humidity Resistance No blistering after 200 hours ASTM D2247
  Abrasion Resistance 0.3 g – 0.4 g material loss after 100 cycles of Tabor Abrader ASTM D4060
  Oven Bake Resistance Within the specification of colour, gloss, hardness and adhesion after double bake of one panel ASTM D2454
  UV Resistance Minimal change in colour or gloss after 60 hours using QUV-A bulbs Ref. QUV Weatherometer manual

Emulsion paint formulation guidelines

S. No.Raw materialsQty (kg)
1Soft water21.00
2Sodium hexa meta phosphate0.20
3SPCP0.40
4Anionic dispersing agent0.70
5Nonionic dispersing agent0.40
6Defoamer0.20
7Hydroxy ethyl cellulose0.50
8In-can preservative0.20
9Dry film preservative0.70
10Ammonia0.20
11Diethylene glycol2.20
12Titanium dioxide – anatase18.00
13Calcined china clay5.00
14Talc9.00
15Calcite5.00
16Pure acrylic emulsion35.00
17Defoamer0.10
18Ammonia0.20
19Pine oil1.00
Total100
Approximate rate per kg
Pigment paste for tinting
Machinery
Disper mix
100 G tank
Containers
10 kg, 4 kg, 1 kg

Degreasing bath control parameters

Degreasing bath control parameters

S. No. Details Parameters
  Bath concentration for immersion 5%
  Bath temperature 30 deg. C min. 60 deg. C max.
  Immersion time 5 minutes to 10 minutes
  Free alkali, points 20 to 35
  Total alkali / Free alkali ratio < 3.0

Testing and Control:

Warning: Do not pippette by mouth, use a pro-pipette.

Free Alkali:

Pipet a 10 ml degreasing bath sample solution into a 150-ml beaker. Add 5 drops of phenolphthalein indicator. Titrate with Standard Acid Titrating Solution (0.1 N H2SO4) to the end point. Disappearance of pink colour is the end point. The volume of the titrating solution is the free alkali value in points.

Disappearance of pink colour – End point

Total Alkali:

Pipet a 10 ml of degreasing bath solution sample into a 150-ml beaker. Add 5 drops of bromocresol indicator solution. Titrate against with the Standard Acid Titrating Solution (0.1 N H2SO4) to the end point. Appearance of pale green from blue colour is the end point. The volume of Titrating Solution is the total alkali value in the alkali bath.

End point: Blue to green

Total Alkali/Free Alkali Ratio:

As the degreasing bath is used regularly and frequently, it becomes contaminated, and the total alkali value will rise. Thus, the ratio of the total alkali value to the free alkali value will also rise and this becomes a useful measure of the degree of contamination of the cleaner solution. The solution is periodically dumped or continuously overflowed to keep the total alkali to free alkali ratio from exceeding the maximum value determined for the system. Total Alkali/Free Alkali Ratio should be regularly monitored. The value under typical cleaning conditions should not be allowed to exceed 3.0.