Composite polypropylene filling masterbatch and preparation method thereof
A technology of compounding polypropylene and filling masterbatch, applied in the field of filling materials, can solve problems such as singleness, and achieve the effects of improving dispersibility, improving processing fluidity, and improving impact strength
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Embodiment 1
[0034] A composite polypropylene filler masterbatch, characterized in that it comprises the following components in parts by weight: 9.7 parts of polypropylene, 88 parts of composite powder, 2 parts of stabilizer, and 0.3 part of antioxidant; the composite powder contains The mixture of calcium carbonate: wollastonite: talcum powder with a mass ratio of 1:(2-5):(2-5).
[0035] The above-mentioned polypropylene has a melt index of 23-25 g / 10 min at 230°C.
[0036] The above-mentioned calcium carbonate is 2500-mesh modified calcium carbonate obtained by adding 1.5% stearic acid at a speed of 500-2000 rpm and surface treatment at 110°C.
[0037] The aforementioned wollastonite is 1250-mesh modified wollastonite with an aspect ratio of 1: (15-20) obtained by adding 1.5% silane coupling agent at a speed of 500-2000 rpm and 140°C for surface treatment.
[0038] The talc powder mentioned above is a 3000-mesh modified talc powder obtained by adding 1.5% titanate coupling agent at a...
Embodiment 2
[0052] A composite polypropylene filler masterbatch, characterized in that it comprises the following components in parts by weight: 7 parts of polypropylene, 90 parts of composite powder, 2.5 parts of stabilizer, and 0.5 part of antioxidant; the composite powder contains The mixture of calcium carbonate: wollastonite: talcum powder with a mass ratio of 1:(2-5):(2-5).
[0053] The above-mentioned polypropylene has a melt index of 23-25 g / 10 min at 230°C.
[0054] The above-mentioned calcium carbonate is 3000-mesh modified calcium carbonate obtained by adding 1% stearic acid at a speed of 500-2000 rpm and surface treatment at 105°C.
[0055] The aforementioned wollastonite is 1500-mesh modified wollastonite with an aspect ratio of 1: (15-20) obtained by surface treatment at a speed of 500-2000 rpm and 130° C. by adding 1% silane coupling agent.
[0056] The talc powder mentioned above is a 3500-mesh modified talc powder obtained by surface treatment at 120° C. by adding 1% t...
Embodiment 3
[0070] A composite polypropylene filler masterbatch, characterized in that it comprises the following components in parts by weight: 14 parts of polypropylene, 85 parts of composite powder, 1 part of stabilizer, and 0.1 part of antioxidant; the composite powder contains The mixture of calcium carbonate: wollastonite: talcum powder with a mass ratio of 1:(2-5):(2-5).
[0071] The above-mentioned polypropylene has a melt index of 23-25 g / 10 min at 230°C.
[0072] The above-mentioned calcium carbonate is 2000-mesh modified calcium carbonate obtained by adding 2% stearic acid at a speed of 500-2000 rpm and surface treatment at 120°C.
[0073] The above-mentioned wollastonite is 1000-mesh modified wollastonite with an aspect ratio of 1: (15-20) obtained by surface treatment at a speed of 500-2000 rpm and 150° C. by adding 2% silane coupling agent.
[0074] The above-mentioned talc powder is 2500-mesh modified talc powder obtained by adding 2% titanate coupling agent at a speed o...
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