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NEW GENERATION SILICA DISPERSING AGENT

KSD-01

Non-metal type silica  Dispersing Agent for Rubber

Problems

 Silica has many problems when it is mixed with rubber as filler.

Our Solution

The rubber chemical additives product line continues to grow as we find new ways of applying our processing technology to today's compounding problems such as dispersing silica into rubber.

DESCRIPTION  

  KSD-01 is the nonmetal type silica dispersing agent. It is available in flake form.  KSD-01 is slightly soluble in water and has limited solubility in alcohols, ketones and aromatic   solvents.

APPLICATION  

  KSD-01 is mainly used as a silica dispersing agent, reducing power consumption and rubber   viscosity
 
SPECIFICATION
 

Ordor

Faint

Specific Gravity

0.95

Heat loss (%)

1.4 +/- 0.1

Softening point(`C)

60 +/- 5

Ash

Trace

pH

7 +/- 0.2

Color

Dark brown
 
 
Silica has so many problems when it is mixed with rubber as filler.
 
Silica has a highly active polar surface.
 - Chemical element of silica that constituent surface is mainly silanol structure.
 - Because silanol structure, silica has a highly active polar surface.
 - It caused secondary agglomeration after mixing occurs(reticulation) and increase rubber hardness, power consumtion,
  compound viscosities.
 
Now some kind of silica dispersing agent was developed and it is on the market.
This present silica dispersing agent mainly consisted of Zn and K soap.
 
Present silica dispersing agent
 - Reduces viscosity
 - Gives better scorch safety.
 - Improved flow to make tread extrusion fast and precise with beautiful finish.
 - Reduced power consumption.
 
 
But present silica dispersing agent(Zn, K soap type) not improved physical properties of rubber that mixed with silica.  Also, alkali metal accelerate rubber aging and alkali metal soap not improved silica dispersing degree in rubber.   KSD-01 is not contained alkali metal, improved physical properties of rubber and highly incresed silica dispersing degree in rubber.
 
EXPERIMENT
Approximately formulation for physical property test.

MATERIALS

CONTROL

Present silica dispersing agent (Zn, K soap type)

KSD-01

SMR

50

50

50

BR01

50

50

50

Zeosil 175

50

50

50

Si-69

4

4

4

P-oil

20

20

20

Paraffine wax

2

2

2

6PPD

2

2

2

Present silica dispersing agent( Zn, K Soap type)

 

3

 

KDD-01

 

 

3

Sulphur

1.4

1.4

1.4

Other

 

 

 
(This experiment exercised in 3L kneader.)
Physical properties
 

MATERIALS

CONTROL

Present silica dispersing agent(Zn, K soap type)

KSD-01
Power consumption(A)

14.5

14

13.8
Mooney viscosity(125`C)

37.7

33

34
Elongation(%)

580

542.5

600
Tensile strength(kgf/cm2)

138.5

135.6

140.4
M300(kgf/cm2)

57.09

37.89

30.4
Tear strength(kgf/cm)

45.2

39.8

50.1
Abration(NBS style)(%)

360

314

450
 
 
Except for physical properties, we measured dispersing degree of silica by analytical instrument, in view of the result so far archived, KSD-01 is more uniform dispersing of silica than control and present silica dispersing agent.
 
If you request the picture of silica dispersing degree, we promise to send of related data.
 
Technical support manager :   E-mail:js_park@labkorea.com
 
PACKING
KSD-01 flakes are available in 20kg plastic bag.
 

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