Spray-free pearlescent polypropylene alloy for bumpers and preparation method thereof
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A pearlescent effect and polypropylene technology is applied in the field of polypropylene alloy with no spraying pearlescent effect for bumpers and its preparation field, which can solve problems such as cost increase, and achieve the effects of saving cost, avoiding scrap, and low cost without spraying pearlescent effect.
Inactive Publication Date: 2018-10-09
HEFEI GENIUS NEW MATERIALS
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Problems solved by technology
At present, the price of metal powder or pearl powder on the market is relatively high, and such a high amount of addition will inevitably lead to an increase in cost and thus affect its use and promotion. Therefore, it is necessary to develop a low-cost metal or pearl effect spray-free polypropylene alloy
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Embodiment 1
[0030] First take by weighing raw material by component and proportion (parts by weight) in table 1;
[0031] Then add the above-mentioned raw materials into the high mixer and mix for 5 minutes. The mixed blend is extruded and granulated through a twin-screw extruder. °C, 175 °C, 175 °C, 175 °C, 180 °C, 180 °C, 180 °C, 180 °C, 185 °C, the length-to-diameter ratio of the extrusion screw is 40, and the rotation speed of the extrusion screw is 350 rpm. The prepared mixture was subjected to a performance test, and the test results are shown in Table 2.
Embodiment 2
[0033] First take by weighing raw material by component and proportion (parts by weight) in table 1;
[0034] Then add the above raw materials into the high mixer and mix for 10 minutes, and extrude the mixed blend through a twin-screw extruder to granulate. The temperature of each zone of the extruder is 170 ° C, 185 °C, 185 °C, 185 °C, 185 °C, 190 °C, 195 °C, 195 °C, 195 °C, 200 °C, the length-to-diameter ratio of the extrusion screw is 36, and the rotation speed of the extrusion screw is 350 rpm. The prepared mixture was subjected to a performance test, and the test results are shown in Table 2.
Embodiment 3
[0036] First take by weighing raw material by component and proportion (parts by weight) in table 1;
[0037] Then add the above raw materials into the high mixer and mix for 15 minutes, and then extrude the mixed blend into pellets through a twin-screw extruder. °C, 175 °C, 175 °C, 175 °C, 180 °C, 180 °C, 180 °C, 180 °C, 195 °C, the length-to-diameter ratio of the extrusion screw is 40, and the rotation speed of the extrusion screw is 350 rpm. The prepared mixture was subjected to a performance test, and the test results are shown in Table 2.
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Abstract
The invention discloses a spray-free pearlescent polypropylene alloy for bumpers and a preparation method thereof. The spray-free pearlescent polypropylene alloy is prepared from the following components in parts by weight: 48 to 72 parts of polypropylene, 8 to 12 parts of polyethylene, 15 to 30 parts of inorganic filler, 5 to 10 parts of toughener, 0.2 to 0.8 part of antioxidant, 0.2 to 0.5 partof light stabilizer, 0.1 to 0.5 part of pearl powder, 0.2 to 0.5 part of coupling agent and 0.2 to 1.0 part of color powder by mixing and extrusion granulation, wherein the modified pearl powder is pearl powder coated with a layer of fatty acid amide hydride. When the prepared polypropylene alloy is used together with a high-gloss mirror mold, high gloss and good pearl appearance can be obtained by direct injection molding without spraying. Compared with a spraying process, the spray-free pearlescent polypropylene alloy has the advantages that the cost is greatly reduced, and meanwhile scrap caused by paint removing in the use process of the product is avoided.
Description
technical field [0001] The invention relates to the technical field of modified materials, in particular to a polypropylene alloy with spray-free pearlescent effect for bumpers and a preparation method thereof. Background technique [0002] In recent years, the automobile industry has developed rapidly, especially the output and social ownership of cars have maintained a relatively high growth rate. Plastics for automobiles play an irreplaceable role in satisfying aesthetics, safety, and lightweight. At the same time, new technologies for automobiles are also It is developing towards a more environmentally friendly, safer, more comfortable and personalized direction. Among the varieties of plastics used in automobiles, modified polypropylene materials have become the most used variety in plastic materials used in automobiles, and are also the focus of the development and application of plastics used in automobiles. Polypropylene material has a wide range of sources, low den...
Claims
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Application Information
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