Product Introduction
Fine-blend®SAG-008 has a good effect on increasing viscosity and chain extension for post-consumer PC, PA, PET and PLA, as a result, improving the mechanical properties of recycled materials.
Mechanism and Advantage
Fine-blend®SAG-008 is a reactive chain extender with high epoxy content and higher reaction activity. The recycled polyester materials often degrade seriously by many times shearing or thermal history, which leads to broad molecular weight distribution. SAG-008 has a high concentration of epoxy group, which can react with the terminal groups of the recycled polyester to prevent further degradation, increasing the melt viscosity and improving processing stability.
Fig .Chain extension and reaction between SAG-008 and terminal groups of engineering resins
Application Case
Case1. Application of SAG-008 in R-PC
As shown in Fig 1 and Fig 2, the melt index of recycled PC decreases with the increase of SAG-008 content. It indicates that SAG-008 have a good effect on thickening and chain extension. The tensile strength and flexural strength are improved. It shows that SAG-008 can restore the inherent performance R-PC by chain extension in recyclable materials.
Case 2. Application of SAG-008 in R-PA
Fig 3.Effect of SAG-008 on melt index of R-PA66 (260 ℃ × 2.16kg)
Fig 4.Effect of SAG-008 on tensile strength and flexural strength of R-PA66
As shown in Fig 3 and Fig 4, the melt index of recycled PA66 decreases with the increase of SAG-008 content. It indicates that SAG-008 has a good thickening and chain extension effect. However, the tensile strength and flexural strength are raised to some extent. It shows that SAG-008 can restore the inherent performance of recycled PA66 by chain extension.
SAG-008 enhanced the molecular weight of recycled PA66
MALDI TOF MS high linearity mode determination, molecular weight results from polymerix software was as following:
As shown in Tab 1, after adding the SAG-008, the molecular weight of recycled PA66 increased and the molecular weight distribution became narrower.
Recommended dosage
1-5%
Processing Guide, packaging and storing security information
Please refer to the product MSDS.