Other natural rubber sources
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Release time:
Mar 31,2026
Given that the cultivation of the Brazilian rubber tree, Hevea brasiliensis, is constrained by geographic and climatic factors and is highly susceptible to diseases, the development of alternative rubber-producing plants holds significant strategic importance.
1. Dandelion rubber (e.g., Russian dandelion):
Characteristics: The roots contain rubber hydrocarbons, with quality comparable to that of Hevea brasiliensis. It has a short growth cycle (annual), can be cultivated in temperate regions, exhibits strong adaptability, and holds great potential for mechanized harvesting.
Applications and Current Status: During World War II, the Soviet Union and North America conducted extensive research in this area. Today, countries such as Germany, the United States, and China are all pursuing R&D projects aimed at applying dandelion rubber to tire manufacturing. Tire companies including Goodyear and Bridgestone have successfully tested and produced tires made from dandelion rubber. The main challenges at present are reducing costs and achieving large-scale agricultural cultivation.
2. Silver chrysanthemum rubber (e.g., silver ragwort):
Characteristics: A shrub whose bark and roots contain rubber. It is drought-tolerant and tolerant of poor soils, can grow in semi-arid regions, and does not compete with food crops for land.
Applications and Current Status: It was also studied during World War II. Currently, cultivation and research & development are underway in the United States, Mexico, Europe, and China. The rubber derived from it can be used to manufacture tires, hoses, and other general-purpose rubber products. Cooper Tire has successfully demonstrated tires made from guayule rubber. Commercialization of the extraction technology is key.
3. Eucommia rubber tree:
Characteristics: A tree species unique to China. Its latex—found in the bark, leaves, and fruits—is eucommia gum, an isomer of natural rubber (trans-polyisoprene). At room temperature, this material exhibits a rigid, plastic state; upon heating, it softens and becomes malleable, then reverts to its original rigidity upon cooling.
Applications and Current Status: This “rubber–plastic duality” gives it unique applications:
Medical applications: fabrication of orthopedic fixation splints (as a substitute for plaster casts) and dental filling materials.
Industrial applications: insulation layers for submarine cables, golf ball coverings, shape-memory materials, and high-performance tires (which can reduce rolling resistance).
Other: Eucommia bark itself is also a valuable traditional Chinese medicinal material.
China is a global leader in the research and industrialization of eucommia rubber and is currently focused on developing high-rubber-content varieties and advancing integrated extraction technologies.
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Mar 31,2026
Mar 31,2026
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