Toughening Agent for PBT and Its Alloy
Product Introduction
Fine-Blend ® SOG-02 is a POE-g-GMA product, due to the reactivity of GMA higher than MAH, it can effectively improve the notch sensitivity of polyester material. The toughening efficiency of SOG-02 is same as E-MA/BA-GMA terpolymer, however, because of its unique molecular structure design, when used in polyester material, the former was better on processing fluidity, this can reduce processing defect of product and enhance productivity.
Mechanism and Advantage
GMA was grafted to the main chain of ethylene elastomer, so SOG-02 has high reactivity with the terminal carboxyl group of polyesters material; therefore, it can achieve the goal of increasing toughening and compatibility. Product structure diagram is as follows:
Physical and Chemical Properties of Fine-Blend® SOG-02
Test item |
Test Method |
SOG-02 |
Density (g/cm3) |
ASTM D792 |
~0.88 |
1GMA level (%) |
Acid-base titration |
Very High |
2MFR (g/10min) |
ASTM D1238 |
2.0~5.0 |
Hardness(SHORE A) |
ASTM D2240 |
70 |
Note: These are physical and chemical properties only and are not to be construed as specifications.
1Low <0.25%,Medium 0.25-0.5%,High 0.5-1.0%,Very High>1.0%
2Test condition:190℃,2.16Kg
Application Case
Case 1: SOG-02 used in super toughening PBT has a higher liquidity
Fig.1 SOG-02 used in super toughening PBT has a higher liquidity
In toughening PBT, parallel adding SOG-02 with adding imported toughening modifier, all of them can achieve super toughening effect when adding amount of 20wt%, however, the processability of the former is better.
Case 2: SOG-02 improved the impact strength of reinforced PBT
Fig.2 Different toughening agents used in PBT/GF
Fig.3 The effect of different toughening agents on the MFR of PBT/GF
a.3 %SOG-02 b. 3% E-MA-GMA c. 3% E-BA-GMA
Fig.4 Influence of SOG-02 and other modifier on injection molding
As shown in Fig.2-4, adding 3% of SOG-02 can achieve the same toughening effect as competitor E-MA-GMA and E-BA-GMA in reinforced PBT (30% glass fiber), and the former fluidity is better. At the same temperature and pressure, only SOG-02 can be molded completely.
Case 3: SOG-02 improved the impact strength of flame-retardant reinforced PBT
Fig.5 SOG-02 improved the impact strength of flame-retardant reinforced PBT
Notched impact strength increased more than 50% when adding 2% SOG-02 or E-BA-GMA in flame-retardant reinforced PBT, in addition, the tensile strength decreased is not too much.
Note: These are typical properties only and are not to be construed as specifications.
Recommended Dosage
The conventional dosage of 2-5% and the super toughened system adding 15-20%, can be adjusted according to the practical situation.
Processing guidelines, package & storage and safety information
Please refer to the product SDS