Synthesis And Propertier Of Novel Bio-mass Based Organosilicone Additives

Organosilicon material has become an indispensable key material in the field of aviation、high-tech、national defense and national economy, and it was one of the industries that the nation highly encouraged. At present, the development of high value-added down-stream silicone product one of emphasis in the organosilicon industry. With the development of organosilicon, plenty of petrochemical products were used, and it’s not good for sustainable development. It becomes one of the effective ways for development of "Green" chemical industry to use the bio-resourse in synthesizing chemicals.In the first part of this paper, a series of dihydromyrcenol-type trisiloxane surfactants(Sxy) were synthesized. Five dihydromyrcenol-type trisiloxane surfac-tants(Sxy) were synthesized by hydrosily-lation from1,1,1,3,5,5,5-heptamethyl-trisiloxane and dihydromyrcenol-polyether catalyzed by Pt-PMVS, and compared with the marketing available trisiloxane surfactant BD-3077. The structures of the products were characterized by means of FT-IR and1H-NMR. Their surface properties and pH stability were studied. The results showed that Sxy could reduce the surface tension of water down to23mN/m, a little higher than BD-3077(21mN/m). The cloud point of0.5wt%S39(3PO segments,9PO segments) solution was higher than85℃. Sxy showed excellent stability in hydrolysis stability. Sxy could maintain stable in pH=4-11, and they could adapt to a larger range of the pH. In pH=l and13, they also showed better hydrolysis stability than BD-3077. The spreadability of all dihydromyrcenol-type surfactant solution was poor on glass and PE film, but BD-3077showed good spreadability on glass.In the second part of this paper, an eugenol-type silane coupling agent was synthesized. Firstly, the acylated product EB was synthesized by acylation from eugenol and benzoyl chloride catalyzed by DMAP. Then, catalyzed by Pt-based catalyst, an eugenol-type silane coupling agent was synthesized from EB and trimethoxysilane. The influence of changing the reaction conditions and equipments to the convension of the hydrosilylation reaction were discused, and the optimum reation conditions were:molar ratio(C=C:Si-O=1:2), in a sealed tube, reaction temperature90℃、reation time12h、PtM catalys(Pt300mg/mol). Under the conditions, the conversion of EB could be100%.In the third part of this paper, methylphenyl silicone resin and eugenol-type silicone resin were synthesized. With the hydrolysis of different ratio of EBS,methyl trimethoxy silane, phenyl trimethoxy silane and dimethyl dimethoxy silane in an alkaline environment(pH=12-13), five kinds of resin were synthesized(S1、S2、S3、 S4and S5).Their TGA behavior were analyzed.In the low temperature region, eugenol-type silicone resin showed poorer thermal stability than methylphenyl silicone resin, but their char yield were much higher than the latter. The silicone resin were added to the PC/ABS,3%compatibilizer,0.2%Q9006and0.2%H161were also added. By changing the type of the silicone resin and the amount of them, the series of the modified PC/ABS composite materials were analyzed by the mechanical experiments and the melt index test. With the increasing amount of S5, the tensile stregth of the modified PC/ABS composite materials were improved. The increasing amount of S3didn’t affect the izod impact strength of the modified PC/ABS composite materials. While adding3%S5, the melt index of the modified PC/ABS composite materials increased from9.48g/lOmin to12.84g/lOmin, higher than the composite materials which add no silicone resin(10.2g/lOmin). The melt index of the modified PC/ABS composite materials which added with eugenol-type silicone resin were higher than the ones added with methylphenyl silicone resin.