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STUDY ON THE PVC BLEND MODIFIED WITH POWDER RUBBER PREPARED USING STYRENE-BUTADIENE LATEX GRAFTED METHYL METHACRYLATE AND LAYERED ORGANIC MONTMORILLONITE

Guobo Huang

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Abstract

The modified styrene-butadiene(BS) latex grafted with 25% methyl methacrylate(MMA) and 1.2% DVB crosslink agent was synthesized,which was used for preparing the modified powder styrene-butadiene rubber(PSBR) composite by layered organic montmorillonite.The feasible process is that organic montmorillonite was firstly separated in removed ion water under high speed stirring,then added it into 25%～30% concentration MMA-grafting-BS emulsion at 75 ℃～80 ℃,and the compound emulsion was stirred continuously at 700 r/min～900 r/min for 3 h,finally it was broken at 80 ℃ after dripping flocculant for 20 min.The mechanical properties of PVC composite can be improved greatly by blending with the 10% modified PSBR containing 8%～12% organic montmorillonite,its tensile strength and notched impact strength increases about 20% and 200% respectively than that of unmodified PSBR/OMT/PVC blend composite.

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What this paper is about

The modified styrene-butadiene(BS) latex grafted with 25% methyl methacrylate(MMA) and 1.2% DVB crosslink agent was synthesized,which was used for preparing the modified powder styrene-butadiene rubber(PSBR) composite by layered organic montmorillonite.The feasible process is that organic montmorillonite was firstly separated in removed ion water under high speed stirring,then added it into 25%～30% concentration MMA-grafting-BS emulsion at 75 ℃～80 ℃,and the compound emulsion was stirred continuously at 700 r/min～900 r/min for 3 h,finally it was broken at 80 ℃ after dripping flocculant for 20 min.The mechanical properties of PVC composite can be improved greatly by blending with the 10% modified PSBR containing 8%～12% organic montmorillonite,its tensile strength and notched impact strength increases about 20% and 200% respectively than that of unmodified PSBR/OMT/PVC blend composite.

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Available abstract

The modified styrene-butadiene(BS) latex grafted with 25% methyl methacrylate(MMA) and 1.2% DVB crosslink agent was synthesized,which was used for preparing the modified powder styrene-butadiene rubber(PSBR) composite by layered organic montmorillonite.The feasible process is that organic montmorillonite was firstly separated in removed ion water under high speed stirring,then added it into 25%～30% concentration MMA-grafting-BS emulsion at 75 ℃～80 ℃,and the compound emulsion was stirred continuously at 700 r/min～900 r/min for 3 h,finally it was broken at 80 ℃ after dripping flocculant for 20 min.The mechanical properties of PVC composite can be improved greatly by blending with the 10% modified PSBR containing 8%～12% organic montmorillonite,its tensile strength and notched impact strength increases about 20% and 200% respectively than that of unmodified PSBR/OMT/PVC blend composite.

Key concepts: Montmorillonite, Materials science, Natural rubber, Styrene-butadiene, Methyl methacrylate, Emulsion, Ultimate tensile strength, Styrene

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STUDY ON THE PVC BLEND MODIFIED WITH POWDER RUBBER PREPARED USING STYRENE-BUTADIENE LATEX GRAFTED METHYL METHACRYLATE AND LAYERED ORGANIC MONTMORILLONITE — Research Paper | ScholarLens