Acid aging behavior of polycarbonates for flame retardant plastic containers for central office and ups* lead-acid batteries
In these studies, the degradation of polycarbonates in battery acid was assessed by monitoring changes in impact resistance and melt flow rate. The effects of stress were investigated. Rates of hydrolysis were obtained from the rates of change in melt viscosity and allow estimation of service life at room conditions. These studies have shown that hydrolytic degradation of polycarbonates in battery acid results in severe reductions in strength and impact properties. These results provide a mechanistic explanation of premature stress crack failures observed in covers of polycarbonate battery containers in telephone central office reserve power usage. Potential implications of these results on the design, life and reliability of polycarbonate jars and covers for UPS and central office stationary reserve batteries are discussed.
- Research Organization:
- Bell Labs, Murray Hill, NJ
- OSTI ID:
- 5654777
- Report Number(s):
- CONF-831010-
- Journal Information:
- INTELEC, Int. Telecommun. Energy Conf. (Proc.); (United States), Conference: International telecommunications energy conference, Tokyo, Japan, 18 Oct 1983
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
20 FOSSIL-FUELED POWER PLANTS
COMMUNICATIONS
POWER SUPPLIES
LEAD-ACID BATTERIES
HEAT RESISTANT MATERIALS
POLYCARBONATES
THERMODYNAMIC PROPERTIES
AGING
CONTAINERS
DECOMPOSITION
FAILURE MODE ANALYSIS
HYDROLYSIS
IMPACT STRENGTH
PLASTICS
RELIABILITY
SERVICE LIFE
STRESSES
CARBON COMPOUNDS
CARBONATES
CHEMICAL REACTIONS
ELECTRIC BATTERIES
ELECTROCHEMICAL CELLS
ELECTRONIC EQUIPMENT
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MECHANICAL PROPERTIES
OXYGEN COMPOUNDS
PETROCHEMICALS
PETROLEUM PRODUCTS
PHYSICAL PROPERTIES
SOLVOLYSIS
SYNTHETIC MATERIALS
SYSTEM FAILURE ANALYSIS
SYSTEMS ANALYSIS
250903* - Energy Storage- Batteries- Materials
Components
& Auxiliaries
200104 - Fossil-Fueled Power Plants- Components