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Emulsifier

Emulsifier
Emulsifier
Emulsifier
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Bitumen emulsifier is a special type of surfactant and a key material in producing emulsified bitumen. Its function is to disperse solid or liquid bitumen (oil phase) into water (aqueous phase) under mechanical action, forming a uniform and stable emulsion that can be applied at ambient temperature. The molecules of bitumen emulsifier possess a hydrophilic (water-attracting) end and a lipophilic (oil-attracting) end. The lipophilic end adsorbs onto the surface of bitumen droplets, while the hydrophilic end extends into the water, forming a protective membrane around the asphalt droplets. This membrane carries an electrical charge, creating electrostatic repulsion between all asphalt droplets, which prevents them from aggregating and coalescing, thereby maintaining a uniformly dispersed and stable state of asphalt in water.

Using emulsion bitumen plant, bitumen can undergo dilution and emulsification with emulsifiers and water to produce emulsified bitumen or modified emulsified bitumen. Due to its excellent fluidity, ease of application, and material efficiency, emulsified bitumen is widely used in road construction and waterproofing engineering. In road construction, emulsified asphalt is applied in: Chips sealing, Slurry sealing, Micro-surfacing, Micro-surfacing, Tack coat, Prime coat, Cold asphalt recycling.

Emulsifiers can be classified by ion type into: Cationic emulsifiers, Anionic emulsifiers, Non-ionic emulsifiers.

Emulsifiers can be classified by breaking speed into: Rapid-setting emulsifiers, Medium-setting emulsifiers, Slow-setting emulsifiers.

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Technical Parameter

Our company produces bitumen emulsifiers mainly used in road engineering like Chips sealing, Slurry sealing, Micro-surfacing, Micro-surfacing, Tack coat, Prime coat, Cold asphalt recycling, main types are as follows:

 

1. SBR Emulsifier (Powder)

 

SBR-Emulsifier

 

Item

Parameter

Surface

White Powder

Fineness (20 Standard Screen Pass Rate)

≥97%

Moisture

≤2.5%

Formula Weight

200,000 To 300,000

Styrene Quality Fraction

21.5～35.0%

Primary Gate, Viscosity, ML(1+4) 100℃

38～68

300% Constant Extension Stress

10～15 Mpa

Tensile Strength

21 Mpa

Break Elongation

≥320%

 

2. SBR-40 SBR Emulsifier (Latex)

 

SBR-40-SBR-Emulsifier

 

Item Index

Appearance Milky white liquid

Solid content

 40～60% （customizable）

Particle charge

+, -（customizable）

Density (g/cm³)

0.95～0.99

PH

3～7（cation, 9.5～11（anion）

Mechanical stability (5min) %

≤1.0

Packing instructions: The product is packed in 200L plastic drums, with a net weight of 200kg/drums, and stored in a cool and dry place at a storage temperature of 5°C to 40°C, to prevent freezing and exposure to the sun.

 

3. SBR-60 SBR Emulsifier (Latex)

 

SBR-60-SBR-Emulsifier

 

Item Index

Appearance Milky white liquid

Solid content

 40～60% （customizable）

Particle charge

+, -（customizable）

Density (g/cm³)

0.95～0.99

PH

3～7（cation, 9.5～11（anion）

Mechanical stability (5min) %

≤1.0

Packing instructions: The product is packed in 200L plastic drums, with a net weight of 200kg/drums, and stored in a cool and dry place at a storage temperature of 5°C to 40°C, to prevent freezing and exposure to the sun.

4. ST-CQS2 Micro-Surfacing Emulsifier (Liquid)

 

ST-CQS2-Micro-Surfacing-Emulsifier

 

1) Physical Properties

 

Appearance

Brown liquid

Solid content (%)

≧85%

PH (18% Water solution)

11-11.2

Viscosity (25℃CPS)

11500

 

2) Dosage

 

Emulsified Bitumen Type

CQS

Bitumen (wt%)

62%

ST-CQS2 (wt%)

2.0%

SBR (60%%) (wt%)

3.0%

PH

2.0-2.5

Water (wt%)

To 100

 

5. ST-CRSL2 Cationic Rapid Emulsifier (Liquid)

 

ST-CRSL2-Cationic-Rapid-Emulsifier

 

1) Physical Properties

 

Appearance at 20'C

Liquid

Flash Point, °C

>100 (>212F)

Pour Point, °C

<5 (<41°F)

Density, g/cc at 20°C

0.93

Density, lbs/U.S. gal at 20°C

7.76

Viscosity, mPa.s (cP) at 20°C 

450

 

2) Dosage

 

Cationic rapid set emulsion

Cationic rapid set emulsion

PH 2-2.5hydrochloricacid

Cationic medium set emulsion

Cationic medium set emulsion

PH 1.5-3.0hydrochloricacid

Slurry and micro-surfacing

Slurry and micro-surfacing

PH 2-3phosphoricacid

Total Basic Nitrogen

5.6-6.4%

AB-46-1234

 

6. ST-ARSS Anionic Rapid Emulsifier (Powder)

 

ST-ARSS-Anionic-Rapid-Emulsifier

 

1) Physical Properties

 

Appearance

Light Yellow to Yellow Powder

Solid Content

96%±1

Water Solubility

10%±1

PH

11-13

 

7. ST-AMS Anionic Slow-Setting Emulsifier (Liquid)

 

ST-AMS-Anionic-Slow-Setting-Emulsifier

 

1) Physical Properties

 

Effective Content

>70%

Solubility

1:100 alkaline aqueous solution

Ph

7-9

Exterior

Colorless Or Light Yellow Viscous Paste

 

2) Dosage

 

Emulsified Bitumen Type

SS Emulsion Bitumen

Bitumen (wt%)

60

ST-AML (wt%)

1.2-1.5

PH

11-12

Stabilizer(wt%)

0.05-0.1

Water (wt%)

to 100

Note: Be sure to add the emulsifier to the specified amount of water, rather than adding water to the emulsifier. lf you want to dilute it by adding water directly to the emulsifier, it is easy to form an extremely viscous gel.

 

8. ST-ARSL Anionic Rapid-Setting Emulsifier (Liquid)

 

ST-ARSL-Anionic-Rapid-Setting-Emulsifier

 

 

9. ST-CMSS Cationic Medium-Setting Emulsifier (Latex)

 

ST-CMSS-Cationic-Medium-Setting-Emulsifier

 

 

10. ST-CMSL Cationic Medium-Setting Emulsifier (Liquid)

 

ST-CMSL-Cationic-Medium-Setting-Emulsifier

 

Technical FAQ & Support

How do you achieve a stable asphalt emulsion?
The secret lies in our high-shear colloid mill for asphalt emulsion. By adjusting the clearance between the rotor and stator, we can achieve particle sizes as small as 2-5 microns, which is key to emulsion stability.
Can this machine handle corrosive chemicals?
Specifically designed as a stainless steel bitumen emulsifier for acidic media, all parts in contact with the emulsion are made from acid-proof materials to prevent corrosion from emulsifying agents.
Is the emulsifying process automated?
Our automatic bitumen emulsifying unit integrates flow meters and a control panel to manage the bitumen-to-water ratio automatically, ensuring every batch meets your project's technical specifications.
What is the typical production capacity?
We provide a continuous production bitumen emulsifier machine with capacities ranging from 5 to 20 tons per hour. For R&D, we also have a small capacity laboratory bitumen emulsifier.
What maintenance does the colloid mill require?
Routine maintenance includes checking the mechanical seals, lubricating the bearings, and periodically inspecting the stator/rotor for wear. Our bitumen emulsifier machine is designed for easy disassembly and cleaning.

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