Synthesis and impact properties of siloxane–DGEBA epoxy copolymers

The thermal stability investigation of microencapsulated ammonium polyphosphate/siloxane‐modified epoxy resin composites

“…The 1 H‐NMR spectrum of E‐S10 copolymer is displayed in Figure . 1 H‐NMR spectrum shows the chemical shifts (δ, in ppm from TMS = 0) at 7.25–6.81 (protons‐phenyl‐), 4.17 (HCOSi), 3.34 (HCoxirane), 2.89, 2.74 (H 2 Coxirane), 1.63 [(CH 3 ) 2 C], and 0.07 (H 3 CSi) . The experimental data of chemical shifts are in accordance with that of the structure of the theoretical assumption.…”

“…And the appearance of characteristic peaks of SiOSi (1030 cm −1 ) and SiOC (1130 cm −1 ) significantly indicates that the PMPS is successfully grafted onto the E51 with retention of the oxirane group in the epoxy structure. Besides, the characteristic absorption peaks at 3500, 2840, 1590, and 1430 cm −1 , 2960 and 1250 cm −1 are attributed to the hydroxyl, SiOCH 3 , Si‐C 6 H 5 , and SiCH 3 groups …”

The thermal stability investigation of microencapsulated ammonium polyphosphate/siloxane‐modified epoxy resin composites

“…The 1 H‐NMR spectrum of E‐S10 copolymer is displayed in Figure . 1 H‐NMR spectrum shows the chemical shifts (δ, in ppm from TMS = 0) at 7.25–6.81 (protons‐phenyl‐), 4.17 (HCOSi), 3.34 (HCoxirane), 2.89, 2.74 (H 2 Coxirane), 1.63 [(CH 3 ) 2 C], and 0.07 (H 3 CSi) . The experimental data of chemical shifts are in accordance with that of the structure of the theoretical assumption.…”

“…And the appearance of characteristic peaks of SiOSi (1030 cm −1 ) and SiOC (1130 cm −1 ) significantly indicates that the PMPS is successfully grafted onto the E51 with retention of the oxirane group in the epoxy structure. Besides, the characteristic absorption peaks at 3500, 2840, 1590, and 1430 cm −1 , 2960 and 1250 cm −1 are attributed to the hydroxyl, SiOCH 3 , Si‐C 6 H 5 , and SiCH 3 groups …”

Surface promoted redox cationic polymerization of epoxy monomers catalyzed by silver salts

“…To improve the adhesive properties of the SPCP system, it was decided to blend ECH with other cationically curable monomers 21. Comonomers such as oxetanes, vinyl ethers, and propenyl ethers have already found use as accelerators for the photocationic polymerization of cycloaliphatic epoxy monomers 22.…”

Self-healing and polymer welding of soft and stiff epoxy thermosets via silanolates

“…Most epoxy resins incorporating DGEBA typically become brittle with a high degree of crosslinking [51], and fillers or toughening agents are often dispersed throughout the epoxy resin to moderate brittleness and increase toughness. Elastomers such as butadiene-acrylonitrile are commonly used for rubber-toughened epoxies [52], although many other polymers like polyether sulfones [53][54][55], polyether imides [56][57][58][59], acrylics [60], polyurethanes [61], and polysiloxanes [62,63] have been studied as organic modifiers for improving mechanical properties. The limited toughness from the 60 wt% DGEBA formulation here suggests that the KPAMS may not be fully compatible with the DGEBA.…”

The thermal stability investigation of microencapsulated ammonium polyphosphate/siloxane‐modified epoxy resin composites

“…The 1 H‐NMR spectrum of E‐S10 copolymer is displayed in Figure . 1 H‐NMR spectrum shows the chemical shifts (δ, in ppm from TMS = 0) at 7.25–6.81 (protons‐phenyl‐), 4.17 (HCOSi), 3.34 (HCoxirane), 2.89, 2.74 (H 2 Coxirane), 1.63 [(CH 3 ) 2 C], and 0.07 (H 3 CSi) . The experimental data of chemical shifts are in accordance with that of the structure of the theoretical assumption.…”

“…And the appearance of characteristic peaks of SiOSi (1030 cm −1 ) and SiOC (1130 cm −1 ) significantly indicates that the PMPS is successfully grafted onto the E51 with retention of the oxirane group in the epoxy structure. Besides, the characteristic absorption peaks at 3500, 2840, 1590, and 1430 cm −1 , 2960 and 1250 cm −1 are attributed to the hydroxyl, SiOCH 3 , Si‐C 6 H 5 , and SiCH 3 groups …”

Surface promoted redox cationic polymerization of epoxy monomers catalyzed by silver salts

“…To improve the adhesive properties of the SPCP system, it was decided to blend ECH with other cationically curable monomers 21. Comonomers such as oxetanes, vinyl ethers, and propenyl ethers have already found use as accelerators for the photocationic polymerization of cycloaliphatic epoxy monomers 22.…”

Self-healing and polymer welding of soft and stiff epoxy thermosets via silanolates

“…Most epoxy resins incorporating DGEBA typically become brittle with a high degree of crosslinking [51], and fillers or toughening agents are often dispersed throughout the epoxy resin to moderate brittleness and increase toughness. Elastomers such as butadiene-acrylonitrile are commonly used for rubber-toughened epoxies [52], although many other polymers like polyether sulfones [53][54][55], polyether imides [56][57][58][59], acrylics [60], polyurethanes [61], and polysiloxanes [62,63] have been studied as organic modifiers for improving mechanical properties. The limited toughness from the 60 wt% DGEBA formulation here suggests that the KPAMS may not be fully compatible with the DGEBA.…”

The thermal stability investigation of microencapsulated ammonium polyphosphate/siloxane‐modified epoxy resin composites

“…The 1 H‐NMR spectrum of E‐S10 copolymer is displayed in Figure . 1 H‐NMR spectrum shows the chemical shifts (δ, in ppm from TMS = 0) at 7.25–6.81 (protons‐phenyl‐), 4.17 (HCOSi), 3.34 (HCoxirane), 2.89, 2.74 (H 2 Coxirane), 1.63 [(CH 3 ) 2 C], and 0.07 (H 3 CSi) . The experimental data of chemical shifts are in accordance with that of the structure of the theoretical assumption.…”

“…And the appearance of characteristic peaks of SiOSi (1030 cm −1 ) and SiOC (1130 cm −1 ) significantly indicates that the PMPS is successfully grafted onto the E51 with retention of the oxirane group in the epoxy structure. Besides, the characteristic absorption peaks at 3500, 2840, 1590, and 1430 cm −1 , 2960 and 1250 cm −1 are attributed to the hydroxyl, SiOCH 3 , Si‐C 6 H 5 , and SiCH 3 groups …”

Surface promoted redox cationic polymerization of epoxy monomers catalyzed by silver salts

“…To improve the adhesive properties of the SPCP system, it was decided to blend ECH with other cationically curable monomers 21. Comonomers such as oxetanes, vinyl ethers, and propenyl ethers have already found use as accelerators for the photocationic polymerization of cycloaliphatic epoxy monomers 22.…”

Self-healing and polymer welding of soft and stiff epoxy thermosets via silanolates

“…Most epoxy resins incorporating DGEBA typically become brittle with a high degree of crosslinking [51], and fillers or toughening agents are often dispersed throughout the epoxy resin to moderate brittleness and increase toughness. Elastomers such as butadiene-acrylonitrile are commonly used for rubber-toughened epoxies [52], although many other polymers like polyether sulfones [53][54][55], polyether imides [56][57][58][59], acrylics [60], polyurethanes [61], and polysiloxanes [62,63] have been studied as organic modifiers for improving mechanical properties. The limited toughness from the 60 wt% DGEBA formulation here suggests that the KPAMS may not be fully compatible with the DGEBA.…”