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Extrusion-grade polypropylene composite material for new-energy vehicles and preparation method of extrusion-grade polypropylene composite material
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A technology for new energy vehicles and composite materials, which is applied in the field of extrusion-grade polypropylene composite materials for new energy vehicles and its preparation. It can solve the problems of poor flame retardancy and achieve low odor, high oxygen index, and low smoke density. Effect
Inactive Publication Date: 2019-03-19
JINYOUNG XIAMEN ADVANCED MATERIALS TECH CO LTD
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[0004] Due to the poor flame retardancy of polypropylene itself, the LOI index is only 18, which is much different from the LOI: 24 required by the state. At the same time, considering environmental protection issues, it has become a priority to develop an extrusion-grade polypropylene composite material for automobiles that meets the new safety regulations. trend
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Embodiment 1
[0023] The invention discloses an extrusion-grade polypropylene composite material for new energy vehicles, which is prepared from the following raw material components in the weight ratio:
[0025] Among them, the mixed polypropylene is made by mixing homopolypropylene and copolypropylene with similar melting index, wherein the content of homopolypropylene is 30-58%, and the content of copolypropylene is 0-27%, and the test condition is 230℃ / 2.16Kg, the melt flow rate of mixed polypropylene is 1-5g / 10min.
[0037] Based on Example 1, this embodiment optimizes the formula and material selection of the polypropylene composite material, and designs the following experimental groups:
[0038] project
[0039] Wherein, the auxiliary agent is a combination of antioxidant 1010 and antioxidant 168.
Embodiment 3
[0041] In this example, the polypropylene composite material prepared in the experimental group 1-N of Example 2 was used as the experimental object, and the physical and chemical properties were characterized. The specific content and methods of characterization are as follows:
[0042] The tensile performance test is carried out according to ISO527-2, the sample size is 150mm×10mm×4mm, and the tensile speed is 50mm / min;
[0043] The bending performance test is carried out according to ISO 178, the sample size is 80 mm×10 mm×4mm, the bending speed is 2mm / min, and the span is 64mm;
[0044] Charpy impact strength is carried out according to ISO 179, the sample size is 80mm×6mm×4mm, and the notch depth is one-third of the thickness of the sample.
[0045] The odor characteristic of the material is tested with a capillary gas chromatograph, and the sample is 1 g of pellets.
[0046] The comprehensive mechanical properties of the material are judged by the values of tensile st...
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Abstract
The invention relates to the field of high-polymer materials, and discloses an extrusion-grade polypropylenecomposite material for new-energy vehicles and a preparation method of the extrusion-gradepolypropylene composite material. According to the formula, the extrusion-grade polypropylenecomposite material comprises, by weight, 57-85% of mixed polypropylene, 10-25% of fillers, 5-15% of flameretardant, 0-2% of deodorant and 0-1% of additives. The preparation method includes weighing the raw materials by weight percentage, sending the weighted materials into a mixer for mixing, sending a mixture into a double-screw extruder, melting and extruding to granulate the mixture, so as to obtain the composite material. According to the technical scheme, the extrusion-grade flame-resistant environmental-friendly composite material with high oxygen index (LOI:26), low odor level (3.5 level)(80 DEG C, 2H), low VOC, and low smoke density is prepared; the preparation cost is low, and the preparation process is simple.
Description
technical field [0001] The invention relates to the field of polymer materials, in particular to an extrusion-grade polypropylene composite material for new energy vehicles and a preparation method thereof. Background technique [0002] As a common polymer material, polypropylene is a semi-crystalline thermoplastic with high impact resistance, strong mechanical properties, resistance to various solvents and acid and alkali resistance, so it is used in many aspects such as automobiles , medicine, construction, etc. [0003] Polypropylene resin is the second most used material in automobiles after ABS. The honeycomb panel materials used in automobile sound insulation and heat insulation are all made of polypropylene extrusion molding. In recent years, automobile fire accidents have occurred frequently. Every time a fire accident occurs in the vehicle with the most passengers, it will cause heavy casualties and property losses. Therefore, the country has launched the "JTT 1095...
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