The investigation of methyl phenyl silicone resin/epoxy resin using epoxy-polysiloxane as compatibilizer

Abstract

A novel polysiloxane (HPS) with epoxy and phenyl groups was synthesized by controlled hydrolysis and condensation of c-(2,3-epoxypropoxy)propytrimethoxysilane (KH560) and diphenyl silanediol. Besides, HPS was used as the compatibilizer of the miscible diglycidyl ether of bisphenol A (DGEBA)/methyl phenyl silicone resin (Si603) blend. The structure and effect of HPS were characterized by Fourier transform infrared spectra, nuclear magnetic resonance ( 1 H-NMR), differential scanning calorimetry, and scanning electron microscopy (SEM). The results showed that HPS could significantly improve the compatibility between epoxy resin (EP) and Si603 resin. In addition, the glass transition temperature (T g ) of the blend increases with increasing amount of Si603 from 129 to 151°C. The thermal stability of blending system was studied by thermogravimetric analysis, derivative thermogravimetric analysis and SEM. The results showed that the incorporation of Si603 into DGEBA resin not only obviously increased the thermal resistance, but also remarkably improved the flame retardancy. The high limiting oxygen index of the HPS/EP/Si603/DDM system at 31 is considered as excellent flame retardancy in the epoxy system.

Enhanced Charpy impact strength of epoxy resin modified with vinyl‐terminated polydimethylsiloxane

“…using a silane-based compatibilizer (triethoxysilane and aminosilane) 3,6,23-25 ; 2. copolymerizing dimethyl siloxane with diphenyl siloxane 16,18,19,26,27 ; 3. introducing reactive groups into polydimethylsiloxane (PDMS) chains to bond with ERs 17,22,28,29 ; hyperbranched polymers 30,31 ; and polyhedral oligomeric silsesquioxanes 32 ; 4. using peroxides. using a silane-based compatibilizer (triethoxysilane and aminosilane) 3,6,23-25 ; 2. copolymerizing dimethyl siloxane with diphenyl siloxane 16,18,19,26,27 ; 3. introducing reactive groups into polydimethylsiloxane (PDMS) chains to bond with ERs 17,22,28,29 ; hyperbranched polymers 30,31 ; and polyhedral oligomeric silsesquioxanes 32 ; 4. using peroxides.…”

Smoke suppression properties of epoxy crosslinked structure and intumescent fire retardant in epoxy‐based intumescent fire‐retardant coating

“…The crosslinked EP/PA, as film former for epoxy‐based coating, has good corrosion inhibition performance and adhesion to the substrates . However, the pure EP is easily ignited and releases large quantities of heat, smoke, and even toxic gases during combustion; hence exploring fire and smoke production behaviors of EP has been a hot and challenging issue …”

Synthesis of phenyl silicone resin with epoxy and acrylate group and its adhesion enhancement for addition-cure silicone encapsulant with high refractive index

“…The characteristic signal of the protons of phenyl group is observed at 6.9-7.8 ppm. [24] The signals of the protons of Figure 4(b) shows the 29 Si NMR spectrum of PSREA. The peaks at −11.5 and −20.6 ppm are assigned to the silicon in (R 2 )Si(CH 3 )O 2/2 units (R 2 = 3-methacryloyloxypropyl).…”