A method for preparing pipe fittings from polyolefin masterbatch
A polyolefin and masterbatch technology, applied in the field of polyolefin blends and pipe fittings manufacturing, can solve the problems of single additive, improve the comprehensive performance of products, etc., achieve good fluidity, solve low temperature brittleness, high cost and superior performance. Effect
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Embodiment 1
[0020] Example 1, injection molding 3 / 4 inch 90° elbow:
[0021] A. Preparation of masterbatch: The masterbatch contains the following components by weight ratio:
[0022] Polypropylene 50%;
[0023] Antioxidant 1076: 0.6%;
[0024] Hollow glass microspheres 15%;
[0025] Maleic anhydride grafted polypropylene resin 6%;
[0026] Nano calcium carbonate 20%;
[0027] Stearic acid, monoglyceride 1.4%;
[0028] Ethylene-octene elastomer 7%;
[0029] B. High-speed mixing: Use a mixer to heat up to 40-60°C, and mix antioxidant 1076, maleic anhydride grafted polypropylene resin, nano-calcium carbonate, stearic acid, monoglyceride, and ethylene-octene elastomer Proportionally add to the mixer, the speed is 1700r / min, the time is 10min, and the mixture is evenly mixed at a high speed to obtain a primary mixture;
[0030] C, low-speed mixing: reduce the speed of the mixer, add hollow glass microspheres to the first mixing, and mix at a low speed, the rotating speed is 400r / min, a...
Embodiment 2
[0034] Embodiment two, injection molding 32 lining:
[0035] A. Preparation of masterbatch: The masterbatch contains the following components by weight ratio:
[0036] Polypropylene 55%;
[0037] Antioxidant 1010: 0.6%;
[0038] Hollow glass microspheres 15%;
[0039] Maleic anhydride grafted polypropylene resin 2%;
[0040] Nano calcium carbonate 18%;
[0041] Stearic acid, monoglyceride 1.4%;
[0042] Ethylene-octene elastomer 8%;
[0043] B. High-speed mixing: Use a mixer to heat up to 40-60°C, and mix antioxidant 1010, maleic anhydride grafted polypropylene resin, nano-calcium carbonate, stearic acid, monoglyceride, and ethylene-octene elastomer Add the proportion to the mixer, the stirring speed is 1700 rpm, mix for about 10 minutes, mix evenly at high speed, and get a mixed material;
[0044] C, low-speed mixing: reduce the speed of the mixer, add hollow glass microspheres to the first mixing, and mix at a low speed, with a stirring speed of 300 rpm, and mix for a...
Embodiment 3
[0048] Embodiment three, injection molding 63 tees:
[0049] A. Preparation of masterbatch: The masterbatch contains the following components by weight ratio:
[0050] Polypropylene 70%;
[0051] Antioxidant 1010: 0.6%;
[0052] Hollow glass microspheres 8%;
[0053] Glycidyl methacrylate grafted polypropylene resin 2%;
[0054] Nano calcium carbonate 14%;
[0055] Stearic acid, monoglyceride 1.4%;
[0056] Ethylene-octene elastomer 4%;
[0057] B. High-speed mixing: Use a mixer to heat up to 40-60°C, and mix antioxidant 1010, glycidyl methacrylate grafted polypropylene resin, nano-calcium carbonate, stearic acid, monoglyceride, ethylene-octene The elastomer is added into the mixer in proportion, the stirring speed is 1600 rpm, mixed for 10 minutes, mixed evenly at high speed, and a mixed material is obtained;
[0058]C, low-speed mixing: reduce the speed of the mixer, add hollow glass microspheres to the primary mixing, and mix at a low speed, the stirring speed is 300...
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