สืบค้นงานวิจัย
Silica Reinforcement of Epoxidised Natural Rubber of Varying Epoxy Content
Jacob K. Varkey - ไม่ระบุหน่วยงาน
ชื่อเรื่อง (EN): Silica Reinforcement of Epoxidised Natural Rubber of Varying Epoxy Content
ผู้แต่ง / หัวหน้าโครงการ (EN): Jacob K. Varkey
บทคัดย่อ (EN): Natural rubber (NR) is a renewable material that combines excellent mechanical and dynamic properties. Tyre is one of the major areas of application of natural rubber. Replacement of carbon black by silica is growing in the tyre industry on ecological and technological grounds. Silica as a reinforcing filler in tyre contributes to lower rolling resistance and improved wet traction. However, silica also causes some processing difficulties. Polar silica surface results in high filler-filler interaction and hence forms agglomerates in the rubber matrix, especially in non polar hydrocarbon rubbers such as natural rubber leading to poor filler dispersion. The silanol groups on the surface of silica particles also causes adsorption of curatives which results in cure retardation. Unlike carbon black, the poor reinforcement of silica in natural rubber compounds is attributed to the poor filler dispersion and ineffective coupling of silica to natural rubber. Use of silane coupling agents in silica reinforced rubbers can improve rubber-silica interaction and hence better dispersion. Epoxidised natural rubber (ENR) is a chemically modified form of NR and is more polar than NR. Silica exhibits better reinforcement in ENR than in NR. Silica filled ENR exhibits low rolling resistance and high wet grip in tyres. Present study reports silica reinforcement of ENR of varying epoxy content. Silane modified silica filled NR, ENR 10, ENR 17.5, ENR 25 and ENR 50 and silica filled NR and ENR 50 were compared for their cure characteristics, stress-strain properties and technological properties viz; tear strength, hardness, heat build-up, resilience, compression set, abrasion loss and Demattia flex failure. Cure characteristics of silane modified silica filled NR and ENR of varying epoxy content and that of silica filled ENR were comparable. Silica filled NR without silane showed less scorch time, delayed cure and higher cure torque. Stress-strain properties of silane modified samples showed a regular variation with level of epoxidation. Modulus showed an increase with extent of epoxidation. Silica filled ENR 10 and 17.5 exhibited optimum modulus, strength and medium elongation. Hardness, heat build-up, compression set and abrasion loss showed an increasing pattern whereas tear strength, resilience and flex resistance showed a decreasing trend with level of epoxidation. Atomic force microscopy studies showed that dispersion of silica was better inv ENR based samples.
บทคัดย่อ: ไม่พบข้อมูลจากหน่วยงานต้นทาง
ภาษา (EN): en
เผยแพร่โดย (EN): การยางแห่งประเทศไทย
คำสำคัญ (EN): tyres
เจ้าของลิขสิทธิ์ (EN): การยางแห่งประเทศไทย
หากไม่พบเอกสารฉบับเต็ม (Full Text) โปรดติดต่อหน่วยงานเจ้าของข้อมูล

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Jacob K. Varkey. "Silica Reinforcement of Epoxidised Natural Rubber of Varying Epoxy Content". ไม่ระบุหน่วยงาน. ม.ป.ป.

Jacob K. Varkey. "Silica Reinforcement of Epoxidised Natural Rubber of Varying Epoxy Content". ไม่ระบุหน่วยงาน. ม.ป.ป.. Print.



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Silica Reinforcement of Epoxidised Natural Rubber of Varying Epoxy Content
Jacob K. Varkey
การยางแห่งประเทศไทย
ไม่ระบุวันที่เผยแพร่
The Role of Myanmar Rubber Planters and Producers Association (MRPPA) in Natural Rubber Development and its Recent Activities Addressing the Fears of the Natural Rubber Supply Chain Regarding the Dissemination of Genetically Modified Rubber Trees Possible use of sludge ash as filler in natural rubber The Effect of Epoxidised Natural Rubber Content on the Physical Properties of the NR/ENR Blends Technological and processing properties of natural rubber layered silicate-nanocomposites by melt intercalation process FEASIBILITY OF RUBBER (Hevea brasiliensis Mull. Arg.) CULTIVATION IN THE EASTERN PROVINCE OF SRI LANKA; A NON TRADITIONAL AREA FOR RUBBER Visco-Elastic Behaviour and Reinforcement of Montmorillonite Clay Filled Natural Rubber Latex Nano-Crepe Rubber Advances on biodiversity of natural rubber biosynthesis and regulations on natural rubber biosynthesis METHOD FOR ANALYSIS OF DRY RUBBER CONTENT IN FRESH NATURAL RUBBER LATEX BY USING CENTRIFUGATION TECHNIQUE WITH MICRO-CAPILLARY TUBE Soft and Hard Nanoparticles in Natural Rubber
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