Scraping-resistant automobile inner fitting special-purpose material and preparation thereof
A scratch-resistant technology for automotive interior parts, applied in the field of polypropylene composite materials and processing technology, can solve the problems of high cost, poor scratch resistance on the surface of PP composite materials, poor comprehensive performance, etc. The effect of excellent surface scratch resistance and good impact resistance
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Embodiment 1
[0035] Prepare according to the following formula:
[0036] ①PP 80 parts by mass;
[0037] ② Ultrafine talc powder (0.5-10 μm) 20 parts by mass;
[0038] ③Polyamide, polyether silicone oil 2.0 parts by mass (ratio 1:1)
[0039] ④ antioxidant 1010 1.0 parts by mass;
[0040] Formulate the above materials in parts by mass, first mix PP, lubricant, and antioxidant 1010 at a low speed of 300-500 rpm for 3 minutes, then add ultra-fine talc powder and mix at a low speed of 300-500 rpm 5 minutes, followed by mixing at a high speed of 1500-2000 rpm for 12 minutes, and then mixing at a low speed of 300-500 rpm for 10 minutes to obtain a composite material premix. After being extruded and granulated by an extruder, the scratch-resistant special material for automotive interior parts is obtained.
[0041] The performance of the prepared special material is as follows after testing:
[0042] Specific gravity 1.03
[0043] Elongation at break 400%
[0044] Tensile strength 22.94MPa ...
Embodiment 2
[0051] Prepare according to the following formula:
[0052] ①PP 85 parts by mass;
[0053] ② Superfine talc powder (0.5~10μm) 15 parts by mass;
[0054] ③ Polyamide, polyether silicone oil 2.4 parts by mass (ratio 1:5)
[0055] 4. Antioxidant 1010 1.5 parts by mass;
[0056] Formulate the above materials in parts by mass, first mix PP, lubricant and antioxidant 1010 at a low speed of 300-500 rpm for 5 minutes, then add ultra-fine talc powder and mix at a low speed of 300-500 rpm 3 minutes, followed by mixing at a high speed of 1500-2000 rpm for 15 minutes, and then mixing at a low speed of 300-500 rpm for 5 minutes to obtain a composite material premix. After being extruded and granulated by an extruder, the scratch-resistant special material for automotive interior parts is obtained.
[0057] The performance of the prepared special material is as follows after testing:
[0058] Specific gravity 1.02
[0059] Elongation at break 381%
[0060] Tensile strength 22.92MPa ...
Embodiment 3
[0067] Prepare according to the following formula:
[0068] ①PP 90 parts by mass;
[0069] ② Superfine talc powder (0.5-10μm) 10 parts by mass;
[0070] ③Oleic acid amide, silicone resin 2.8 parts by mass (ratio 5:1)
[0071] ④ antioxidant 1010 2.0 parts by mass;
[0072] Formulate the above materials in parts by mass, first mix PP, lubricant, and antioxidant 1010 at a low speed of 300-500 rpm for 3 minutes, then add ultra-fine talc powder and mix at a low speed of 300-500 rpm 4 minutes, followed by mixing at a high speed of 1500-2000 rpm for 10 minutes, and then mixing at a low speed of 300-500 rpm for 8 minutes to obtain a composite material premix. After being extruded and granulated by an extruder, the scratch-resistant special material for automotive interior parts is obtained.
[0073] The performance of the prepared special material is as follows after testing:
[0074] Specific gravity 1.01
[0075] Elongation at break 320%
[0076] Tensile strength 21.59MPa
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