Natural rubber - Wikipedia
Naturally coagulated rubber (cup lump) is used in the manufacture of TSR10 and TSR20 grade rubbers. Processing for these grades is a size reduction and cleaning process to remove contamination and prepare the material for the final stage of drying.
Physical and Rheological Properties of Cup Lump Rubber
2022年1月30日 · The raw rubber was processed and treated before blending with bitumen. The modified bitumen was tested for physical and rheological properties. The incorporation of cup lump rubber decreased the penetration and increased the softening point.
Latex is usually sold as a dry rubber sheet, concentrated rubber in the solution, cup lumps, or crumbled rubber. Cup lumps are the coagulated material found in the collection cup after the latex was poured into the container. Most farmers sold their cup lumps to local agents and provincial traders in the Philippines.
Rheological and Morphological Characterization of Cup Lump Rubber ...
2023年3月8日 · First, CMB is produced by blending 60/70 penetration grade bitumen with five percent cup lump rubber (in gel form) using a high shear mixer (at 4000 revolutions per minute) at 160 ± 10 °C for two hours. More detail on the process of converting solid rubber into gel is …
Rheological Behavior and Rubber Processing | SpringerLink
2014年1月1日 · In the extrusion process, the rubber compound is conveyed in the channel of a rotating extruder screw and finally pushed through a die. Rheological problems associated include the entrance pressure drop in the die, shear-induced dissipative heating of the rubber compound, extrudate distortion, and swelling of the extrudate after leaving the die.
Cup Lump Natural Rubber | Encyclopedia MDPI
2023年5月5日 · Cup lump is obtained when fresh latex is extracted by tapping into a long cut made in a rubber tree and letting the drips pour into a plastic cup. The substance is then mixed with formic acid to coagulate the latex. The process continues for several days until the required amount is reached [1].
Technically Specified or Block Rubber (TSR) - natural rubber
Block rubber can be produced both from field latex as well as from latex coagulum or what is commonly known as cup- lump. Tree lace and unsmoked sheets can also be used in producing block rubber. The TSR grades such as grades 10 and 20 are most widely used by the tire industries and made from cup lump also known as field coagulum.
Potential Additives in Natural Rubber-Modified Bitumen: A …
2023年4月20日 · This work will focus on the use of additives with cup lump natural rubber (CLNR), which has recently started to gain attention among researchers, especially in rubber-producing countries such as Malaysia, Thailand and Indonesia.
Determination of Dry Rubber Content of Rubber Cup Lump
“On-site validation” was conducted by collecting data from selected rubber processing plants in major rubber producing provinces, namely: Zamboanga Sibugay, North Cotabato, and Bukidnon. Secondary data, such as cup lumps and crumb rubber volume from 2017 to 2019, were collected and analyzed using Percentage Ratio Comparison.
Effect of cup lump rubber as a sustainable bio-modifier on the ...
2022年3月14日 · One such bio-modifier is the natural cup lump rubber (CLR). This study aims to investigate the physical, rheological, storage stability, morphological and chemical properties of the CLR and CLR-polyphosphoric acid (PPA) modified bitumen.