( Reading] LED industry rapid development, greatly boost the development of the upstream materials industry, and further promote the breakthrough in the field of advanced materials. LED lamps used in a lot of plastic parts, including the LED packaging components, LED optical lens, the light scattering element, efficient cooling element, light reflection. 。 。
the LED industry rapid development, greatly boost the development of the upstream materials industry, and further promote the breakthrough in the field of advanced materials. LED lamps used in a lot of plastic parts, including the LED packaging components, LED optical lens, the light scattering components and efficient heat dissipation components, diffuse reflection of light and light board, etc. , and thermal conductive plastics is increasingly replacing parts of thermal conductivity of metal parts used in the LED lamps and lanterns, mainly including the lamp holder, cooling heat lamp cup and shell, etc.
from the point of whole life cycle, more environmentally friendly organic composite thermal conductive plastic and the metal material production, less energy consumed by the production process pollution is small, meeting the needs of national energy conservation and emissions reduction, energy saving. As the LED luminous efficacy of ascension and the heat generated by the reduction, the LED will gradually reduce the cooling needs, thermal plastic radiator will be able to meet the demand of most conventional LED lamps and lanterns, heat dissipation. Soon are expected to receive more rapid growth, industry chain will be further clear division of labor.
it is understood that the current traditional lamps shell heat materials mainly include the following three types: metal materials, ceramic and plastic in general. Relative to the metal materials, thermal conductivity of plastic with a uniform heat dissipation, light weight, and high safety factor, design flexible, etc; Relative to the ceramic, thermal conductive plastics solid, forming convenient, modelling design degrees of freedom is higher; Relative to the general plastic, high thermal conductive plastic coefficient of expansion.
compared to traditional metal materials and thermal conductive plastics has many advantages, to sum up has the following four points:
1. Lightweight
the density of pure aluminum is 2700 kg/m3, the density of aluminum is larger, and the density of thermal conductive plastics in 1500 ~ 2000 kg/m3, usually choose thermal conductive plastic cooling can sharply down lighting the weight of the goods ( About 30% ~ 50%) , makes the lighting product lightweight and useful cutting device, transportation of indirect capital.
2. High degree of freedom
planning of degrees of freedom is a prominent advantage of organic thermal conductive plastic. The main producing method is to die casting aluminum radiator or stretch forming, in the process of producing is more difficult for the clutter in the shape of processing. And organic plastic outstanding liquidity, can produce very thin parts, and the shape of a planning increasingly cluttered, can further complete lightweight goods. And injection molding products beautiful, smooth finish good, can do not need to subsequent coating and color finish goods under the condition of the diversity of colors.
3. Mass production planning
can be a molding for thermal conducting plastics and without processing, after mass produce simple completed planning, complete the planning efficiency. Useful to cut the aluminum material after extrusion molding process after deflashing, nickel plating, etc. Together, the data such as the mould cost is aluminum alloy to produce small, long service life, reduced processing cycle and capital.
4. Security and simplify the power structure
aluminum radiator due to its high conductivity, if choose not block type power supply is difficult to pass high voltage test certification. Thermal insulation properties of plastic, has a certain advantage in high voltage test and makes the non blocking type power supply into a may produce lamps and lanterns, can fall in capital not only, make product planning more dainty, more major is to cut the user use metal shell in the process of conducting the safe hidden trouble that may occur. Safe environmental protection, can recycle, good insulation to ensure the safety of its use.
with the Chinese government departments have given more attention, in the aspect of special material increased investment in technology innovation and the strength of LED materials, especially the thermal conductivity of plastic there will be a very good application prospect and development space.