สืบค้นงานวิจัย
Improvement of Storage Stability of Pre-vulcanized Natural Rubber Latex Concentrates for Commercial Applications
W.M.G. Seneviratne - ไม่ระบุหน่วยงาน
ชื่อเรื่อง (EN): Improvement of Storage Stability of Pre-vulcanized Natural Rubber Latex Concentrates for Commercial Applications
ผู้แต่ง / หัวหน้าโครงการ (EN): W.M.G. Seneviratne
บทคัดย่อ (EN): An important part of latex product manufacture is that the part or pre vulcanization of Natural Rubber (NR) latex in the liquid state and subsequently used to form a deposit of vulcanized rubber on the former prior to heating for complete cure. Drying of the latex article made out of pre-vulcanized lattices is sufficient to achieve a vulcanized product with physical properties that are satisfactory for many purposes. Pre-vulcanized latex has many applications such as dipped and cast goods, rug backing, coatings and the combining of coir, paper and fabrics. State of vulcanization is quite important in pre-vulcanized lattices. However due to the residual vulcanizing ingredients and other factors such as temperature results in poor stability during storage. Hence an safer and advanced technology is essential to prepare pre-vulcanized latex with long term storage stability. This paper describes certain developments carried out to prevent over vulcanization and thereby improve storage stability of pre-vulcanized latex. Even when latex is pre-vulcanized, it retains its original fluidity and general appearance of centrifuged latex. The cure takes place in the individual latex particles without altering their state of dispersion. The state of cure of pre-vulcanized latex can be determined by the spot chloroform coagulation test subsequent to the confirmation by the Modified Swollen Diameter test. Excess compounding ingredients which may retain after pre-vulcanization cause further formation of primary linkages between the latex particles and such lattices would become unsuitable for product manufacture. Three different processing methodologies were used to study in the preparation of pre-vulcanized lattices in this research work with a view to achieve long term storage stability. Latex quality parameters such as alkalinity, TSC, DRC, VFA and storage stability of pre-vulcanized latex (by testing MST and viscosity) were tested weekly and state of cure was determined twice a week to ascertain the level of pre-vulcanization. The results revealed that the one of the methods (technique 1) yields the best stability compared to the others and the as per technique 1 exhibited excellent tensile strength and tear strength in comparison with the other methods studied.
บทคัดย่อ: ไม่พบข้อมูลจากหน่วยงานต้นทาง
ภาษา (EN): en
เผยแพร่โดย (EN): การยางแห่งประเทศไทย
คำสำคัญ (EN): strength properties.
เจ้าของลิขสิทธิ์ (EN): การยางแห่งประเทศไทย
หากไม่พบเอกสารฉบับเต็ม (Full Text) โปรดติดต่อหน่วยงานเจ้าของข้อมูล

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W.M.G. Seneviratne. "Improvement of Storage Stability of Pre-vulcanized Natural Rubber Latex Concentrates for Commercial Applications". ไม่ระบุหน่วยงาน. ม.ป.ป.

W.M.G. Seneviratne. "Improvement of Storage Stability of Pre-vulcanized Natural Rubber Latex Concentrates for Commercial Applications". ไม่ระบุหน่วยงาน. ม.ป.ป.. Print.



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Improvement of Storage Stability of Pre-vulcanized Natural Rubber Latex Concentrates for Commercial Applications
W.M.G. Seneviratne
การยางแห่งประเทศไทย
ไม่ระบุวันที่เผยแพร่
Addressing the Fears of the Natural Rubber Supply Chain Regarding the Dissemination of Genetically Modified Rubber Trees The Role of Myanmar Rubber Planters and Producers Association (MRPPA) in Natural Rubber Development and its Recent Activities CHARACTERIZATION OF COMMERCIAL NATURAL RUBBER THROUGH NMR SPECTROSCOPY Effect of storage temperature on antioxidant activities of Citrus medica L. var. limetta FEASIBILITY OF RUBBER (Hevea brasiliensis Mull. Arg.) CULTIVATION IN THE EASTERN PROVINCE OF SRI LANKA; A NON TRADITIONAL AREA FOR RUBBER NOVEL PRESERVATIVE SYSTEM FOR NATURAL RUBBER LATEX (TAPS) Differential expression of mitochondrial pyruvate dehydrogenase gene correlates with latex yield and tapping in rubber tree Preparation and Mechanical Property of the Epoxidized Natural Rubber from Field Latex 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
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