Polypropylene nano composite material and preparation method thereof
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A nano-composite material, polypropylene technology, applied in the field of polypropylene nano-composite materials, can solve the problems of losing the advantages of nano-composite materials, difficulty in dispersion, performance degradation, etc., and achieve the effect of improving material performance, improving dispersion effect, and reducing density
Active Publication Date: 2010-05-26
CHONGQNG PRET NEW MATERIAL +2
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However, due to the disadvantages of high price and difficult dispersion of nanoscale fillers including nanoclay, agglomeration is prone to o...
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Embodiment 1
[0037] Weigh 39% of polypropylene, 40% of Cloisite 15A, 20% of maleic anhydride grafted polypropylene, 0.25% of Irganox1010, 0.25% of Igrafos 168, and 0.5% of Negonox DSTP in a high-speed mixer. After 5 minutes, add it to the twin-screw extruder to melt and extrude to granulate. The temperature inside the screw barrel is: 180°C in the first zone, 190°C in the second zone, 190°C in the third zone, 190°C in the fourth zone, 200°C in the machine head, double The rotating speed of the screw extruder is 600 rpm, and the clay masterbatch M40 is obtained.
Embodiment 2
[0039] Take by weight 89.5% of polypropylene, the clay masterbatch M40 that embodiment 1 makes is 10%, Irganox 1010 is 0.1%, Igrafos 168 is 0.1%, Negonox DSTP is 0.3%, dry mixes 5 in high-speed mixer Minutes, then add to the twin-screw extruder to melt and extrude to granulate, wherein the temperature in the screw barrel is: 180°C in the first zone, 190°C in the second zone, 190°C in the third zone, 190°C in the fourth zone, 200°C in the head, twin-screw The extruder rotational speed was 600 rpm. After the particles are dried, they are injection molded on an injection molding machine to prepare samples.
Embodiment 3
[0041] Take by weight 79.5% of polypropylene, the clay masterbatch M40 that embodiment 1 makes is 20%, Irganox 1010 is 0.1%, Igrafos 168 is 0.1%, Negonox DSTP is 0.3%, dry mix in high-speed mixer After 5 minutes, add it to the twin-screw extruder to melt and extrude to granulate. The temperature in the screw barrel is: 180°C in the first zone, 190°C in the second zone, 190°C in the third zone, 190°C in the fourth zone, 200°C in the head, and double The screw extruder rotating speed is 600 rpm. After the particles are dried, they are injection molded on an injection molding machine to prepare samples.
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Abstract
The invention discloses a polypropylene nano composite material with low density, high rigidity and high heat resistance and a preparation method thereof. The polypropylene nano composite material with the low density, high rigidity and high heat resistance consists of the following raw materials in percentage by weight: 70 to 98 percent of polypropylene, 1 to 15 percent of organic clay, 0.1 to 10 percent of compatilizer, 0.2 to 2 percent of stabilizer, and 0 to 5 percent of other additives. The composite material has the advantages that: 1, the nano-scale organic clay is used as a filler to enhance the polypropylene matrix, and the rigidity and the heat resistance of the material can be remarkably improved by adding a little amount of nano filler; 2, compared with the conventional filler enhanced polypropylene, the polypropylene nano composite material obviously reduces the density of the material, and workpieces applied to automobiles and other related industries are favorable for lightening the weight of products and for reducing energy consumption; and 3, by adopting a sectional feeding mode, the dispersion effect and material performance of the nano-scale filler in the polymer matrix are further improved based on the conventional process.
Description
technical field [0001] The invention relates to a polypropylene nanocomposite material; specifically, a polypropylene nanocomposite material with low density, high rigidity and high heat resistance, and a preparation method thereof; belonging to the field of polymer modification and processing. Background technique [0002] Polypropylene is currently one of the fastest-growing general-purpose thermoplastics. Because of its good processing performance and physical and chemical properties, it is widely used in automotive interior and exterior trims, electronics, and home appliance shells. However, polypropylene also has disadvantages such as low rigidity, poor heat resistance, and large shrinkage. Generally, a large amount of addition is required, which often affects the molding and processing performance of the product, and significantly increases the density of polypropylene, thereby increasing the weight of the product parts, and it is difficult to recycle the material. It ...
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