After sisal, hemp is the most widely used natural fiber as reinforcement in composites. Hemp is naturally one of the most ecologically friendly fibers on earth, and also the oldest.


The use of hemp fibers as reinforcement in composite materials has increased in recent years as a response to the increasing demand for developing biodegradable, sustainable, and recyclable materials. Hemp fibers are found in the stem of the plant which makes them strong and stiff, a primary requirement for the reinforcement of composite materials. Themechanical properties of hemp fibers are comparable to those of glass fibers. Composites made of hemp fibers with thermoplastic, thermoset, and biodegradable matrices have exhibited good mechanical properties. A number of hemp fiber surface treatments, used to improve the fiber/matrix interfacial bonding, have resulted in considerable improvements in the composites’ mechanical properties.

Using Hemp can provide weight reduction in aviation composites varying from 10% to 50%, with equal performance and with a cost reduction of 10% to 20%, compared with making the same composites with conventional metallic materials, including carbon fiber.

Hemp bioplastic is also an affordable, natural fibre composite that can be used to replace oil-based materials. Biodegradable, recyclable and toxin-free – hemp bioplastic for instance can help address many pressing environmental issues. … Hemp contains around 65-70% cellulose compared to wood 40%, flax 65-75%, and cotton up to 90%.

Hemp is an annual plant native to central Asia and known to have been grown for more than 12,000 years. It probably reached central Europe in the Iron Age and there is evidence of its growth in the UK by the Anglo- Saxons (800-1000 AD). It is now grown mostly in the EU, Central Asia, Philippines, and China. According to Food and Agriculture Organisation (FAO), almost half of the world’s industrial hemp supply is grown in China, with most of the remainder being cultivated in Chile, France, the Democratic People’s Republic of Korea, and Spain. Now that the federal Hemp bill in the USA has been passed you will also see the prices of Hemp lower.

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