These Charts show the thermal deformation temperature and the softening temperature (called the âVicat softening temperatureâ) of major plastics. The heat distortion temperature is the temperature when the test piece placed in the heat medium with bending load applied reaches a specified deflection as temperature rises. The Vicat softening temperature is defined as the temperature where the needle shaped penetrator sinks into the test piece to a specified depth as temperature of the heating medium rises and specified vertical load is applied to the test piece.
Puerto Rico is a territory (Commonwealth) of the United States of America and Puerto Ricans have common citizenship, currency and defense. Although Puerto Ricans are U.S. citizens, residents of Puerto Rico pay no federal income tax, nor can they vote in presidential elections.
Puerto Rico's original name is Borinquen (in Spanish) Boriken, meaning Land of the Brave Lord in the language of the indeginous inhabitants, the Taino people. Cristopher Colum â¦ bus named the island San Juan Bautista or St. John the Baptist.The capital city was called Puerto Rico or Rich Port.At some point the names were reversed on documents sent to Spain; thus the island was named Puerto Rico and the capital was named San Juan.he Spanish named the island San Juan (Saint John). The major settlement and port on the north coast was named Puerto Rico. In time, cartographers (map makers) switched the names around and the island became known as Puerto Rico (Rich Port) and the city became San Juan.