ABS composition suitable for being laser-welded and preparation method thereof
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A technology of laser welding and composition, applied in the field of polymer material processing, can solve the problems of high melting temperature, unfavorable welding promotion and use, etc., and achieve the effects of low melting temperature, good appearance and wide processing window
Active Publication Date: 2019-05-17
SHANGHAI KUMHO SUNNY PLASTICS
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The polycarbonate composition provided by this patent has a higher melt strength after adding a melt enhancer. Not only does the surface of the welded part have no protrusions and breakdown phenomena, but it can also be welded at a higher laser intensity. The welding strength of the parts is higher, the processing window of the laser welding process of the polycarbonate composition is widened, and a polycarbonate composition that is easy to process by laser welding is obtained, but the melting temperature of the composition is high, which is not conducive to the combination of the composition and the polycarbonate composition. PMMA welding and promotion
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[0040] The present embodiment also provides a preparation method suitable for laser welding ABS resin composition, comprising the following steps:
[0041] S1. 30-50 parts of ABS rubber powder, 30-60 parts of SAN resin, 5-10 parts of heat-resistant agent, 3-10 parts of PMMA, 1-5 parts of near-infrared laser absorber, 0.1-1 part of antioxidant, 0.5-1.5 parts of lubricant are pre-mixed in high-speed mixing equipment;
[0042] S2. Pass the premixed material obtained in step S1 through a twin-screw extruder, melt and extrude it at an extrusion temperature of 180-250°C and a screw speed of 200-500 rpm, and cool and granulate to obtain the Suitable for laser welding ABS resin composition.
Embodiment 1-5
[0053] Embodiments 1-5 respectively provide a kind of ABS composition suitable for laser welding, and the specific components are as shown in Table 1:
[0054] The preparation method that is suitable for laser welding ABS composition comprises the following steps:
[0055] (1) Prepare materials by the components and content of ABS rubber powder, SAN resin, heat-resistant agent, PMMA, near-infrared laser absorber, antioxidant, lubricant in Table 1;
[0056] (2) Premix the materials prepared in the step (1) in a high-speed mixer;
[0057] (3) Pass the premixed material obtained in step (2) through a twin-screw extruder, melt and extrude it at an extrusion temperature of 180-250° C. and a screw speed of 200-500 rpm, and cool and granulate. An ABS resin composition suitable for laser welding is obtained.
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Abstract
The invention provides an ABS resin composition capable of improving laser welding performance and a preparation method thereof. The ABS resin composition is prepared from the following components inparts by weight: 30-50 parts of ABS rubber powder, 30-60 parts of SAN resin, 5-10 parts of a heat resistant agent, 3-10 parts of polymethyl methacrylate, 1-5 parts of a near-infrared laser absorbent,0.1-1 part of an antioxidant, and 0.5-1.5 parts of a lubricant. The preparation method of the ABS resin composition comprises the following steps: the raw materials are pre-mixed in a high-speed mixerfor 3-10 minutes, then a pre-mixed material is extruded through a double-screw extruder to be pelletized, and then the ABS resin composition is obtained. The ABS resin composition and the preparationmethod thereof have the advantages that prepared ABS resin capable of improving laser welding can greatly improve the laser energy absorption capacity of an ABS substrate material, meanwhile, excellent tenacity and heat resistance and high melt strength are achieved, and the resin composition is very suitable for being laser-welded to PMMA.
Description
technical field [0001] The invention relates to the technical field of polymer material processing, in particular to an ABS composition suitable for laser welding and a preparation method thereof. Background technique [0002] Laser welding is an efficient and precise welding method that uses a high-energy-density laser beam as a heat source. Compared with traditional welding, laser welding has the advantages of narrow heating range, precise and controllable action position and area, fast welding speed, and no thermal influence, noise and pollution to the outside world. Laser welding technology has become a new trend in future welding. One of the two polymers that is welded by laser is transparent to the near-infrared laser, and the other polymer absorbs the laser energy and generates heat, which melts the polymer and produces welding at the interface. [0003] When using the laser welding process to weld polymers, the appearance of the part and the strength of the weld ar...
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