The cationic quaternary ammonium salt dimethyl diallyl ammonium chloride(DMDAAC)was utilized for the modification of natural zeolite following ball milling,and the natural zeolite or modified zeolite/NR composite material was prepared by substituting a portion of carbon black with natural rubber(NR).Through an ion exchange reaction,DMDAAC can be adsorbed onto the surface of zeolite,altering its chemical properties and reducing polarity to enhance dispersion within NR,thereby improving binder mechanical properties.Results indicate that vulcanized rubber achieves a tensile strength and tearing strength of 28.6 MPa and 119.3 kN/m respectively at a replacement rate of 5 parts.The wear volume measured by Akron abrasion is minimized at 0.28 cm3,while resistance to flexural fatigue reaches 315,000 cycles.At a replacement rate of 10 parts,vulcanized rubber exhibits an elongation at break reaching 491％,along with improved skid resistance and reduced rolling resistance.
关键词
二甲基二烯丙基氯化铵/改性沸石/离子交换/天然橡胶/复合材料
Key words
dimethyl diallyl ammonium chloride/modified zeolite/ion exchange/natural rubber/composite material
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