Ⅰ.The Intercalation And Surtace Trating Of Kaolin And Mofidied Effect On PVC Plastic Ⅱ.The Photosensitization Of Mesoporous Tio₂ And Its Application

The objective of the thesis's part 1 is developing the application of surface treated kaolin as modifier into PVC cable sheath. A series of application basic researches have been carried out on kaolin. The reasearch contents and results are shown in the following.1. kaolin DB-1 was surface treated by coupling agent OL-AT1618, the effect of organic modification is very excellent.2. Potassium acetate was intercalated into Layered kaolin CB-1 in the mositure air and peeled by water washing. The peeled kaolin and calcined peeled kaolin were surface treated by OL-AT1618, and the value of Effect Activation Index, 88%, illustrate that the effect of organic modification is very excellent, too.3. The modified kaolin DB-1 and CB-1 were added into the PVC cable sheath as insulating modifiers. The relation between the content of insulating modifiers with electric property and dynamics properties were invesitigated. The volume resistivity index is less than pure PVC cable raw.4. The modified calcined peeled kaolin and other kaolins were added into the PVC cable sheath as insulating modifiers. The relation between the content of insulating modifiers with electric properties and dynamics properties were invesitigated. It was found that Surface Modification of Calcined Peeled Kaolin gave the best performance, and the suitable amount of insulating modifier is 10-20 parts by mass.