Thermal stabilized ceramics for tablewares
The present invention relates to pottery, is a kind of in order to make the porcelain of porcelain tableware.
Along with the progress and development of society, people's mode of life and life joint gather also constantly changing and accelerating, with regard to regard to cooking culture, progressively to enjoying type, personalization and accessibility development.Because of microwave treatment with heating has easily and fast, sanitation and hygiene and have sterilization and disinfection, mothproof, the fresh-keeping and speciality of thawing concurrently, pretend microwave oven into cooking device, enter huge numbers of families rapidly, and win high admiration.Make with the materials such as the useful devitrified glass of cooking container, thermal glass, pottery or melamine that microwave oven matching uses.The good heat resistance of devitrified glass, but its complex manufacturing technology, the costing an arm and a leg of vessel prepd, and because Oriental's life tradition generally also uncomfortablely made the cooking, storage container with glass unit and container, and likes using porcelain dinner-ware.But existing porcelain tableware all disposes making and fires with clay, quartz and feldspar three and forms, its firing temperature height (needing 1300 ℃), and the coefficient of expansion is big, can not bear chilling or anxious heat, very easily ftractures as the cooking container use of microwave oven.
The objective of the invention is for a kind of porcelain tableware porcelain with thermostability is provided, the performance that anti-chilling, anxious heat are arranged in order to the porcelain tableware of making, particularly lossy microwave is little when being made into the cooking container that microwave oven uses, the food rate of heating is fast, the coefficient of expansion is little, can not ftracture, thermal conductivity is low, non-scald on hand during use.In addition, the firing temperature of its goods is low when making the porcelain tableware with the present invention, can save the energy.
The present invention who realizes above-mentioned purpose is, also includes lithionite in consisting predominantly of kaolin, wilkinite, porcelain powder and quartzy porcelain, and wherein, the content of lithionite is the 8-45% of total amount.(weight percent).
Advantage of the present invention is: 1, and fluxing point is low.Its firing temperature of goods made from porcelain of the present invention is low, reaches 1180 ℃ of furnace temperature and gets final product, and is lower by 120 than firing general ceramic products, but save energy 20% then.2, the coefficient of expansion is little.The coefficient of expansion of the present invention is 5.17 * 10
-6When goods drop in the cold water, can not burst (testing standard promulgated by the ministries or commissions of the Central Government to ceramic products is 120 ℃, and promptly ceramic products is put into water immediately under 120 ℃ of states, once not burst to qualified) under 260 ℃ of states.That is have the performance of anti-chilling, anxious heat with the porcelain utensils that porcelain of the present invention is made, except that can be in order to directly in stove, to hot plate, the heated food, also to be suitable for each grand hotel and snack bar high-temperature steam sterilization to tableware.3, the porcelain utensils made from porcelain of the present invention is to the absorption of microwave little (loss of microwave is little), and therefore, the food rate of heating in the vessel is fast, also non-scald on hand of vessel during use.4, cost value is low.Its cost value of porcelain cooking utensil made from porcelain of the present invention is lower by about 30% than devitrified glass vessel.Therefore, can be made into the best vessel that are fit to cooking by microwave oven, consider, can firmly get the user surely and like from many-sided factor such as performance, Costco Wholesale and traditional life custom with the present invention.
Embodiment:
Porcelain is the rarity of China, and it is enjoyed great prestige in the world with its unique quality and art shapes, contains for a long time not wane.At present, the porcelain on ground such as the enterprise, particularly Jing Dezhen that produce porcelain, Tangshan, Zibo is arranged all in the almost every province of China, with a long history, be famous at home and abroad.According to the resource situation of different areas, in order to making the porcelain of porcelain, its component or proportioning are difference to some extent, but generally all include kaolin, wilkinite, porcelain powder and quartz.The present invention has added a kind of lithionite and the porcelain that is mixed with on the basis of above-mentioned component.With the ceramic products that this porcelain is fired into, under 260 ℃ of states, put into water immediately, do not explode and do not split.Reach and satisfied the technical requirements of making cooking in microwave oven container.The applicant provides four embodiment to be listed as follows:
Weight percent (%)
| | Porcelain is formed |
| Kaolin | Wilkinite | The porcelain powder | Quartzy | Lithionite |
| Embodiment one | ????41 | ????4 | ????13 | ????26 | ????16 |
| Embodiment two | ????42 | ????4 | ????13 | ????19 | ????22 |
| Embodiment three | ????42 | ????4 | ????13 | ????11 | ????30 |
| Embodiment four | ????40 | ????4 | ????12 | ?????/ | ????44 |