core particle
5.A series of rigid core/shell grafting polymer microspheres (marked[C/S]) with different particle diameter were synthesized with crosslinked polystyrene(XPS) or polystyrene(PS) as core and PS or polymethylmethacrylate(PMMA) as shell. The PVC/[C/S] systems were resulted from PVC melt blendins with[C/S].
6.In core experiments performed on artificial cores of permeability 0.45—15.6 μm 2 with aqueous suspension of JYD Ⅱ of properly determined particle size(4.2—22.3 μm) at 40—120℃ the following results are obtained: temporarily plugging rate>90%, specific plug strength>10 MPa/m core, permeability restoration>85%.
8.In this paper, some works have been done in the relationship between mechanical properties, processing parameters and micromorphology of Acrylic resin (ACR) particle with core-shell construction modifying UPVC.
9.P(styrene-co-sodium styrene sulfonate)(P(S-SS)) latex with small particle size about 40nm and narrow size distribution were prepared through ultrasonically initiated emulsion polymerization. Then,CdS nanoparticles in-situ formed on the surface of P(S-SS) latex,resulting in P(S-SS)/CdS core-shell nanocomposites.
