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A kind of polypropylene nanocomposite material and preparation method thereof
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A nano-composite material and composite material technology, applied in the field of new polypropylene nano-composite materials and their preparation, can solve the problems of reduced impact resistance, rising cost, etc., and achieve outstanding impact strength, improved affinity, filling and reinforcing effects Good results
Active Publication Date: 2021-03-23
宁夏易兴新材料发展有限公司
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Problems solved by technology
Although this filled modified polypropylene material has been widely used in automobile parts, in order to compensate for the significant decline in impact resistance caused by the addition of talcum powder and calcium carbonate, a large amount of toughening agent must be added to improve impact resistance
thus increasing the cost
Method used
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Embodiment 1
[0059] Implementation formula
[0060]
[0061]
[0062] Implementation process:
[0063] 1) Weigh the components according to the scheme proportion, in turn, in turn, in a high-speed mixer, stirred for 4 minutes.
[0064] 2) Send the above-mentioned agitation material into the double-screw extruder extruded granulation, cooling, mix, detects, package, i.e., polypropylene nanocomposite product products. Among them, the twin-screw extruder length is 40: 1, the twin screw temperature is set to 120 ° C, 170 ° C, 170 ° C, 180 ° C, 180 ° C, 200 ° C, 210 ° C, 210 ° C, 225 ° C The discharge speed was 200 rpm, the water tank temperature was 40 ° C, and the spinning machine was 600 rpm.
[0065] Formula material Weight percentage (%) Copolypropylene 51.2 Toughening agent 8 Antioxidant 0.3 Lubricant 0.5 Nano-enhanced masterbatch 40 total 100
[0066] Implementation process:
[0067] 1) Weigh the components according to the scheme proporti...
Embodiment 2
[0070]
[0071]
[0072] Implementation process:
[0073] 1) Weigh the components according to the scheme proportion, in turn, in turn, in a high-speed mixer, stirred for 4 minutes.
[0074] 2) Send the above-mentioned agitation material into the double-screw extruder extruded granulation, cooling, mix, detects, package, i.e., polypropylene nanocomposite product products. Among them, the twin-screw extruder length is 40: 1, the twin screw temperature is set to 120 ° C, 170 ° C, 170 ° C, 180 ° C, 180 ° C, 200 ° C, 210 ° C, 210 ° C, 225 ° C The discharge speed was 200 rpm, the water tank temperature was 40 ° C, and the spinning machine was 600 rpm.
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Abstract
The invention discloses a novel polypropylene nanometer composite material and a method for preparing the same. The novel polypropylene nanometer composite material mainly comprises, by weight, 40-80parts of polypropylene, 5-15 parts of toughening agents, 0.2-0.5 part of antioxidants, 0.3-0.8 part of lubricants and 20-65 parts of nanometer reinforcement master batch. The novel polypropylene composite material and the method have the advantages that the novel polypropylene nanometer composite material prepared by the aid of the method is good in comprehensive performance and high in cost performance, the melt flow rate of the novel polypropylene nanometer composite material is higher than 25 g / 10min (under the conditions of the temperatures of 230 DEG C and the weights of 2.16 kg), the simply supported beam notch impact strength at the temperatures of 23 DEG C is higher than 25 KJ / m<2>, and the bending modulus is higher than 1500 MPa; the novel polypropylene nanometer composite material is particularly applicable to producing large interior and exterior trim parts such as instrument panels, door panels and bumpers of automobiles (including new energy automobiles) by means of injection molding.
Description
Technical field [0001] The present invention relates to a novel polypropylene nanocomposite and a preparation method thereof, belonging to the field of polymer materials. Background technique [0002] Polypropylene is used as a universal plastic, which has many excellent properties, but due to low mechanical strength, poor heat resistance, large contraction deformation, and defects of creep resistance. In the application, especially as a structural material, it is limited, and is not a high performance engineering plastic. Therefore, polypropylene is modified, and engineering is an important research topic. [0003] The polypropylene is now modified, and most of the methods are mostly used to add ordinary grade talc and calcium carbonate. Although this filled modified polypropylene material has been widely used in automotive parts, it is necessary to add a large amount of toughening agent to improve the impact resistance in order to compensate for the addition of talc, the impact...
Claims
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