A kind of polypropylene composition and preparation method thereof
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A polypropylene composition and polypropylene technology, which are applied in the field of polymer materials, can solve the problems of VOC problems, difficult processing, large differences in melting temperature, etc., and achieve a simple and easy preparation method, low equipment requirements, and high product yield. Effect
What is AI technical title?
AI technical title is built by PatSnap AI team. It summarizes the technical point description of the patent document.
A polypropylene composition and polypropylene technology, which are applied in the field of polymer materials, can solve the problems of VOC problems, difficult processing, large differences in melting temperature, etc., and achieve a simple and easy preparation method, low equipment requirements, and high product yield. Effect
CN103421235BActive 📅 Publication Date: 2016-06-01WUHAN JINFA TECH CO LTD
[0039] Weigh the polypropylene, elastomer, dispersant, processing aid, and talcum powder according to the weight percentage in Table 1, add them to the high mixer and mix for 1 to 3 minutes at a speed of 1000 to 2000 rpm to obtain the premixed material; the premixed material is melted and extruded by a twin-screw extruder, and the temperature of each zone of the screw is 190~230°C, and vacuum granulated to obtain a polypropylene composition; and its general performance and surface stickiness are measured. The specific test data are listed in in FIG. 1.
[0040] The specific proportioning (percentage by weight) and test performance results of each composition in Table 1 Examples 1 to 6 and Comparative Examples 1 to 5
[0041] Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Comparative example 1 Comparative example 2 Polypropylene 92 81 64 73 77 52 92 88 talcum powder 0 10 20 20 10 30 0 10 Ethylene-propylene c...
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Abstract
The invention discloses a polypropylene composition, which comprises the following components by weight percentage: 52-92wt% polypropylene, 5-15wt% elastomer, 0.5-2wt% ethoxylate, 0-30wt% talcum powder , 0.5~1wt% processing aid; the preparation method of the polypropylene composition is as follows: a) Weigh each component according to the weight ratio, add it to a high mixer and mix it for 1~3 minutes at a speed of 1000~2000 rpm / min to obtain a premix; b) the premix is melted and extruded by a twin-screw extruder, the temperature of each zone of the screw is 190~230°C, and the anti-sticking polypropylene composition is obtained by vacuum granulation; the ethoxylate of the present invention In addition to the role of conventional dispersing powder, the base compound also plays an anti-sticking effect on the surface of polypropylene materials, thereby increasing the variety of anti-sticking agents used in polypropylene compositions; the preparation method is simple and easy, With low equipment requirements and high product yield, it can be widely used in the production of automotive interior parts such as dashboards, sub-dashboards, pillars, glove boxes, door panels, and thresholds.
Description
technical field [0001] The invention relates to the field of polymer materials, in particular to a polypropylene composition and a preparation method thereof. Background technique [0002] Polypropylene has been widely used in automobiles recently due to its advantages of low cost, light weight, high strength, good chemical resistance, good processing technology, and easy recycling. However, when the modified polypropylene is used as a car interior at a higher temperature, the surface of the material will be sticky. This is because some small molecular additives are often added to polypropylene modified materials during the production process, such as antioxidants, lubricants, light stabilizers, etc., to meet the requirements of thermal and oxygen degradation resistance, processing performance and product quality during material processing. Long-term anti-photooxidative aging performance and other requirements. These small molecule additives generally have a low melting po...
Claims
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