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Epoxy is the family of basic components or cured end products of epoxy resins. Epoxy resins, also known as polyepoxides, are a class of reactive prepolymers and polymers which contain epoxide groups. The epoxide functional group is also collectively called epoxy. [1] The IUPAC name for an epoxide group is an oxirane.
In the Han dynasty, pots unglazed on the exterior known as fus (now called sandy pots) were used for wet clay cooking. [1] In Japan clay pots are mentioned from the 8th century and originally referred to as nabe. As pots made from other materials entered use, the Japanese clay pots were distinguished by calling them donabe; do means clay or ...
[contradictory] This type of clay is water-soluble and unstable. Earthenware is clay that has been fired between 1000–1200°C or 1832°–2192°F. The firing makes the clay water insoluble but does not allow the formation of an extensive glassy or vitreous within the body. Although water-insoluble, the porous body of earthenware allows water ...
Terracotta flower pots with terracotta tiles in the background Due to its porosity, fired earthenware, with a water absorption of 5-8%, must be glazed to be watertight. [ 11 ] Earthenware has lower mechanical strength than bone china, porcelain or stoneware, and consequently articles are commonly made in thicker cross-section, although they are ...
Karahi – a type of thick, circular, and deep cooking-pot similar in shape to a wok that originated in the Indian subcontinent; Kazan – a type of large cooking pot used throughout Central Asia, Russia, and the Balkan Peninsula; Marmite – a traditional crockery casserole vessel found in France, it is known for its "pot-belly" shape. [29 ...
First, the outside of the donabe should be dry before use, as moisture within the clay will expand in the heat and may chip or crack the pot. Secondly, the pot should be heated gradually to reduce the possibility of cracks due to heat stress. Third, the pot should never be left over the flame while empty. Donabe is a traditional cooking vessel.
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Paper Clay Adding reconstituted paper pulp to ordinary plastic clay in proportions up to 50% of the total mass. This increases the unfired strength, giving an advantage to hand builders and sculptors. Careful firing is needed to avoid damage by the combustion of the paper. Penetrometer An instrument used to measure the hardness of a clay body.