Cardanol glycidyl ether, epoxidized acetylated castor oil methyl ester, and epoxidized soybean oil were grafted on polyvinyl chloride (PVC) chains to obtain flexible PVC materials. The structure and properties of graft modification of PVC materials were investigated. The glass transition temperature of graft modification of PVC with cardanol glycidyl ether, epoxidized acetylated castor oil methyl ester, and epoxidized soybean oil was 42.1 °C, 43.8 °C, and 37.9 °C, respectively. The mechanical properties illustrated that graft modification of PVC materials were more flexible than PVC. The extraction tests showed that the modified PVC materials presented no migration in n -hexane and can be used to prepare flexible PVC products with high requirements of durability. The internal plasticizing mechanism was also discussed according to the free volume theory.
This present work aimed to attain a high-performance tape for LTCC application by using butyl benzyl phthalate as plasticizer in tape casting slurry of CaO–SiO 2 –B 2 O 3 glass–ceramics. The plasticizing mechanism of butyl benzyl phthalate in suspensions was demonstrated in depth. Dried droplets of binder were prepared to preliminarily judge the compatibility of binder and plasticizer, and the optimal additive amount was determined by rheological characteristic. In addition, a series of qualitative and quantitative methods were carried out to assess the tensile strength and elongation of green tapes, microwave properties and densification of sintered bodies. The experimental results revealed that when the addition of BBP was up to 45 wt%, tape casting slurries had the optimal fluidity and green tapes obtained the excellent performance with density at 1.65 g/cm 3 , tensile strength at 1.43 MPa and elongation at 13.4%. Meanwhile, sintered bodies fired at 850 °C achieved the highest density at 2.42 g/cm 3 with ε r = 5.94 and tanδ = 10 × 10 −4 at 10 GHz.
危险品化学品经营许可证（带存储）