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A kind of polycarbonate composition suitable for laser welding and preparation method thereof
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A polycarbonate and laser welding technology, applied in the field of polymer materials, can solve the problems of high price, complex process, low light-to-heat conversion rate, etc., and achieve the effect of high cleanliness, high efficiency and narrow particle size distribution
Active Publication Date: 2016-11-02
SHANGHAI KUMHO SUNNY PLASTICS
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Problems solved by technology
Currently researched gold, tungsten oxide and other composite nanomaterials can absorb near-infrared light through the surface plasmon resonance absorption effect, but these materials are expensive, complicated in process, and low in light-to-heat conversion rate, which is not conducive to popularization.
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Embodiment 1
[0032] A polycarbonate composition and a preparation method thereof, the method comprising the following steps:
[0034] (2) Feed the raw materials from the feeding port, melt and extrude at 200-280°C, the screw extruder rotates at 500rpm, and the pressure is 2MPa, melts and extrudes, and granulates to obtain the product.
[0035] (3) The screw diameter of the extruder is 35 mm, and the aspect ratio is 32.
Embodiment 2
[0037] A polycarbonate composition and a preparation method thereof, the method comprising the following steps:
[0039] (2) Feed the raw materials from the feeding port, melt and extrude at 200-280°C, the screw extruder rotates at 500rpm, and the pressure is 2MPa, melts and extrudes, and granulates to obtain the product.
[0040] (3) The screw diameter of the extruder is 35 mm, and the aspect ratio is 32.
Embodiment 3
[0042] A polycarbonate composition and a preparation method thereof, the method comprising the following steps:
[0043] (1) Weigh each component by weight: PC: 50 parts, ABS: 45 parts, copper sulfide 1:5 parts, antioxidant 1010: 0.1 parts, antioxidant 168: 0.1 parts, lubricant PETS: 0.3 parts share.
[0044] (2) Feed the raw materials from the feeding port, melt and extrude at 200-280°C, the screw extruder rotates at 500rpm, and the pressure is 2MPa, melts and extrudes, and granulates to obtain the product.
[0045] (3) The screw diameter of the extruder is 35 mm, and the aspect ratio is 32.
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Abstract
The invention relates to polycarbonate composition suitable for laser welding. The polycarbonate composition suitable for the laser welding is prepared by the following components including, by weight, 50-90 parts of polycarbonate resin PC, 10-50 parts of ABS, 1-5 parts of copper sulfide nanoparticles, 0.1-1 part of antioxygen and 0.1-1 part of lubricant. The invention further provides a preparation method and the application of the polycarbonate composition suitable for the laser welding. Compared with the prior art, according to the polycarbonate composition, the absorption of near-infrared light by copper sulphide is used, the copper sulphide is prepared by using an ultrasound spray method, the particle size distribution is narrow, the cleanliness is high, the efficiency of turning luminous energy into thermal energy is high, and the polycarbonate composition is suitable for the laser welding.
Description
technical field [0001] The invention relates to the technical field of polymer materials, in particular to a polycarbonate composition suitable for laser welding and a preparation method thereof. Background technique [0002] Laser welding has become the trend of future welding due to its advantages of fast and efficient, beautiful weld seam and unlimited product shape. The principle of laser welding is to weld two polymer products by projection. One of the polymer products is projected to the near-infrared laser, and the other polymer product absorbs the laser. After absorption, the temperature rises, causing the polymer to melt and produce an interface. of welding. [0003] Most polymers have very low absorption of infrared light, and the performance of laser welding can be improved by adding infrared absorbing materials. The currently studied composite nanomaterials such as gold and tungsten oxide can absorb near-infrared light through the surface plasmon resonance abso...
Claims
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Application Information
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