Description:
Defoamer is used to minimize foaming and air entrainments that are caused by addition of surfactant, salt etc. In cement composition and to achieve an easier measurement of true slurry density.

This-289 defoamer inhibit many small air bubbles into a mortar when the mortar is mixed with water.It can control the air content of dry mortars in order to obtain a smoother surface quality and increased strength.

This-289 high performance cement asbestos sheet defoamer is the latest antifoaming agent which of property reach international advanced level, it is produced to make complicated chemical reactions with many function groups which have anti- foam and restraint foam function. It is special designed for cement, asbestos sheet industry which is a kind of compound defoamer adopted the advantages of silicon defoamer and polyether defoamer, less additive quantity and stability property can save production cost.

Advantages:
1. Reduced material cost
2. Reduced eliminated repairs to surface
3. High surface quality
4. No seasonal limitation
5. Applicable in health and safety-sensitive applications and conditions.

Applications:
First,dilute defoamer with water (1:5) and stir.then pour into muddy water pit and use pump to suck away.It need 3-4kgs defoamer for 3000-4000 pieces cement asbestos tile and can replace carbon black, tributyl phosphate.

Properties:
1. Apperance: Semi-transparent,water white liquid
2. Odour: Slight Smell
3. Solubility: Be solubled in bean oil
4. Enduring temperature: 0-150 degree
5. Antifoam time: 0.8 second
6. Restraint time: 72 hours
7.Activity: 100%
8. Hydronium: Non-hydronium
9. pH: 6-7

Features:
1. Uniformity disperse in cement system.
2. Excellent antifoam and restraint foam property, restraint time is 72 hours
3. 1/2-1/3 additive quantity of ordinary polyether defoamer
4. Acid, alkali, heat resistance
5. Compatible with all cement additives.
6. No any bad side-effect for cement mud

Applications:
It is applied for build materials industry,such as cement asbestos sheet,cement sheet,,calcium silicate board and cement well cover etc

Shelf Time:12 months