Search results
Results from the WOW.Com Content Network
LDPE has SPI resin ID code 4 Schematic of LDPE branching structure. Low-density polyethylene (LDPE) is a thermoplastic made from the monomer ethylene.It was the first grade of polyethylene, produced in 1933 by John C. Swallow and M.W Perrin who were working for Imperial Chemical Industries (ICI) using a high pressure process via free radical polymerization. [1]
In melt extension, LLDPE has lower viscosity at all strain rates. This means it will not strain harden the way LDPE does when elongated. As the deformation rate of the polyethylene increases, LDPE demonstrates a dramatic rise in viscosity because of chain entanglement. This phenomenon is not observed with LLDPE because of the lack of long-chain ...
LDPE is defined by a density range of 0.910–0.940 g/cm 3. LDPE has a high degree of short- and long-chain branching, which means that the chains do not pack into the crystal structure as well. It has, therefore, less strong intermolecular forces as the instantaneous-dipole induced-dipole attraction is less.
Modern Standard Hindi (मानक हिन्दी) is the first or second language of most people living in Delhi, Uttar Pradesh, Uttarakhand, Chhattisgarh, Himachal Pradesh, Chandigarh, Bihar, Jharkhand, Madhya Pradesh, Haryana, and Rajasthan. [1] Modern Standard Hindi is one of the official languages of India.
The examination for the 10th and 12th standard is called the High school examination and Intermediate examination respectively. The High school and Intermediate examinations are conducted annually and simultaneously all over the state of Uttar Pradesh. The Board holds the examinations and prepares the results of nearly 70,00,000 students.
HDPE is known for its high strength-to-density ratio. [4] The density of HDPE ranges from 930 to 970 kg/m 3. [5] Although the density of HDPE is only marginally higher than that of low-density polyethylene, HDPE has little branching, giving it stronger intermolecular forces and tensile strength (38 MPa versus 21 MPa) than LDPE. [6]
The second language (grades 1–10) is the official language of the state (In most non-Hindi states) or Hindi (in the others); in a few states, some schools offer a choice between the state language and Hindi. The third language (grades 5–8, often Hindi in the non-Hindi states) is the regional language of the state (if the student opted for ...
Zabaan School for Languages is a language school based in Delhi and Mumbai offering classes on Indo-Aryan languages. Classes offered include Hindi, [2] Urdu, [3] Sanskrit, [1] and Pashto. [4] Some coverage of Dari, Persian, Arabic, and Braj Bhasha is also available. [5]