U.S. Develops Button Photovoltaic Cells Four Times As Long as Lithium Batteries
Recently, U.S. scientists have developed a new method to create a coin cell battery that is fueled by butane. Its operating time is four times that of a lithium-ion battery of the same weight. When electricity is exhausted, only a small amount of new fuel is added. The battery can be charged immediately. They also produced another battery, which was provided with a heat source by the decay of a radioactive isotope. It can continue to generate electricity for 30 years without requiring fuel or maintenance. It is expected to become an ideal power source for long-time space missions.
Ian Selanowitz, an engineer at the Massachusetts Institute of Technology’s Institute of Nuclear Nanotechnology (ISN), said that tungsten is the main raw material for new batteries and etched billions of nanometer-sized pits on the surface of tungsten. When tungsten absorbs heat, regardless of whether the heat comes from the sun, hydrocarbon fuels, decaying radioactive isotopes, or other heat sources, it emits bright light, and the emission spectrum constantly changes because each pit acts like a resonator, releasing specific Wavelength light waves.
The data provided by the US Department of Energy's Information Management Center shows that 92% of the energy used today requires the conversion of thermal energy into mechanical energy and then into electrical energy. However, existing mechanical energy systems are relatively inefficient and cannot be reduced in size for use in sensors, smart phones, or medical monitoring devices.
PC plastic,full name Polycarbonate.
PC plastic is a kind of excellent comprehensive performance engineering plastics.It has excellent physical, mechanical, electrical, and thermal properties,so it's known as the "king of the transparent plastic'
Classification:
Anti - static PC SHEET, conductive PC SHEET,fireproof PC SHEET,PC fiber - resistant, PC GF SHEET, PC+ABS SHEET,anti-ultraviolet ray resistance PC, food grade PC, anti - chemical PC.
Advantages:
1,Light weight
2,Impact resistance
3,Excellent physical, mechanical, electrical and thermal properties
4,Ultraviolet resistance
Disadvantages:
Polycarbonate is not resistant to ultraviolet light, no resistance to alkali, resistance to hydrolysis stability is not high, is the main performance defect is sensitive to the gap, resistance to organic chemistry, scratch resistance is poorer, long-term exposure to ultraviolet light yellow, are vulnerable to the erosion of some organic solvents.
Applications:
1. Dust-free room spacer
2. Equipment shield and test fixtures;
3. Commercial Building Lighting;
4. Soundproof walls;
5. Greenhouse;
6. Components for medical and pharmaceutical devices;
7. Face shields;
8. Skylights, etc
Modified use:
The purpose of the modified PC Plastic is to toughen, improve the processing performance, reduce the residual deformation, and increase the flame retardancy, etc.
PC/ABS can improve bending modulus, heat resistance and plating performance.
PC/PET and PBT can improve drug resistance and solvent resistance.
PC/PMMA added plexiglass to enhance the appearance of pearlescent color.
PC/PA and HIPS can improve impact toughness and surface finish.
PC/HDPE can improve water resistance, aging resistance, weather resistance and LDPE.
The PC Plastic USES fiberglass or carbon fiber to enhance modification and improve mechanical strength.
The flame retardant grade PC Plastic can be made with bromine flame retardant and antimony trioxide.
Other and polysulfone, aromatic polycarbonate, polyvinyl formaldehyde, polypropylene, polystyrene can be modified to achieve the balance between economy and performance.
Combustion characteristics:
Combustion condition: easy, softening foaming
Flame status: small amount of black smoke
After the fire: out of the fire
Bouquet: no special taste
Specification: the thickness of PC Plastic sheet material can be produced from 0.3mm to 1.9mm, the normal width is 600mm, the width cannot exceed 1200mm, the length is not limited.
The thickness of plate can be produced from 2mm to 180mm, the usual specification of 2-10mm is 1000mm* 2000mm, and the commonly used specification of 10-180mm is 600*1200 mm. PC Plastic sheet can also be customized according to requirements, and the width cannot exceed 1200mm, and the length is not limited.and The diameter of the PC Plastic rod can be produced from 2mm to 250mm, the length is 1 meter, and it can be ordered to be more than 3 meters in length.
Color: Black and clear, can also be made another color, and the color order is 500KG.
Modified varieties:PC Plastic can be added to the Glass Fiber, copper powder, and molybdenum disulfide enhancement plate according to customer's requirements.
Add antistatic agent to the permanent plate, the volume resistance value of 10 to the 6 to 9 power.
Add flame retardant to the flame retardant board from UL 94v-0 to HB combustion grade, and other modification requirements are required to customize various additional properties according to the actual use of the customer.
Product certification: most environmental certification reports and safety reports for raw materials, such as SGS report, CTI report, UL report, MSDS safety information, etc.
PC Plastic Rod,Engineering Clear PC Rod,Engineering PC Plastic Rod,Engineering Clear PC Plastic Rod
Dongguan Noegem Plastic Products Co.,Ltd , http://www.noegempLastic.com