Method of preparing pipe fittings from polyolefin master batch

A polyolefin and polyolefin elastomer technology, applied in the field of polyolefin material application, can solve problems such as single additives, improve product comprehensive performance, etc., achieve good fluidity, solve low-temperature brittleness and high cost, and enhance toughness.

Active Publication Date: 2014-08-20
YONGGAO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Many domestic researchers just add calcium carbonate or talcum powder to the polymer simply and mechanically. Due to

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0020] Example one, injection molding 3 / 4 inch 90° elbow:

[0021] A. Preparation of masterbatch: The masterbatch contains the following components in weight ratio:

[0022] Polypropylene 50%;

[0023] Antioxidant 1076: 0.6%;

[0024] Hollow glass beads 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℃, and press the antioxidant 1076, maleic anhydride grafted polypropylene resin, nano calcium carbonate, stearic acid, monoglyceride, and ethylene-octene elastomer Proportioned into the mixer, the speed is 1700r / min, the time is 10min, high-speed mixing is uniform, and the mixing is obtained at a time;

[0030] C. Low-speed mixing: reduce the speed of the mixer, add hollow glass beads to the primary mixing, and mix at low speed with a speed of 400r / min and a time of 3min to obtain a secondary mixing;

...

Example Embodiment

[0034] Example two, injection molding 32 lining:

[0035] A. Preparation of masterbatch: The masterbatch contains the following components in weight ratio:

[0036] Polypropylene 55%;

[0037] Antioxidant 1010: 0.6%;

[0038] Hollow glass beads 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 press 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, mixing for about 10 minutes, high-speed mixing evenly, get a mixing;

[0044] C. Low-speed mixing: reduce the speed of the mixer, add hollow glass beads to the primary mixing, and mix at low speed. The mixing speed is 300 rpm, mixing for about 3 minutes to obtain a secondary mixing;

[0045...

Example Embodiment

[0048] Example three, injection molding 63 tee:

[0049] A. Preparation of masterbatch: The masterbatch contains the following components in weight ratio:

[0050] 70% polypropylene;

[0051] Antioxidant 1010: 0.6%;

[0052] Hollow glass beads 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, graft antioxidant 1010, glycidyl methacrylate, polypropylene resin, nano calcium carbonate, stearic acid, monoglyceride, ethylene-octene The elastomer is added to the mixer in proportion, and the mixing speed is 1600 rpm, mixing for 10 minutes, mixing at high speed, and mixing is obtained once;

[0058] C. Low-speed mixing: reduce the speed of the mixer, add hollow glass beads to the primary mixing, and mix at a low speed. The mixing speed is 300 rpm, mixing for 3 minutes to obtain a secondary mixing;

...

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Abstract

A method of preparing pipe fittings from polyolefin master batch is provided. The method includes: A) a step of preparing the master batch, wherein the master batch comprises 40-70% by weight of polyolefin, 0.5-1% by weight of an antioxidant, 5-15% by weight of hollow glass beads, 2-10% by weight of an organic compatibilizer, 5-20% by weight of nanometer calcium carbonate, 1-5% by weight of a lubricant, and 3-10% by weight of a polyolefin elastomer; B) a step of mixing raw materials at a high speed to obtain a primary material mixture; C) a step of mixing raw materials at a low speed to obtain a secondary material mixture; D) a step of granulating by a granulating machine to obtain granulated master batch; and E) a step of injection molding of the pipe fittings, namely a step of mixing the obtained granulated master batch and polyolefin (different color master batch) and performing injection molding to obtain the pipe fittings.

Description

technical field [0001] The invention relates to a polyolefin blend, which is mainly used in the manufacture of pipe fittings and belongs to the technical field of polyolefin material application. Background technique [0002] Polypropylene, polyethylene as a general purpose plastic. By physical or chemical methods, adding or blending organic or inorganic additives in the resin, the main purpose is to reduce material costs, improve product performance, and improve the molding process. Many domestic researchers just add calcium carbonate or talcum powder to the polymer simply and mechanically. Due to the single addition of additives, they fail to comprehensively improve the comprehensive performance of the product. Contents of the invention [0003] The purpose of the present invention is to overcome the shortcomings of the existing technology, to provide a pipe fitting that reduces the breakage of hollow glass beads, effectively solves the problem of brittle fracture of ma...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L53/00C08L23/06C08L23/08C08L51/06C08K13/06C08K9/06C08K9/04C08K7/28C08K3/26C08K5/09C08K5/134C08J3/22
CPCC08J3/226C08J2323/12C08J2423/12C08K2201/002C08K2201/003C08K2201/011C08K2201/014C08L23/12C08L2201/08C08L2203/18C08L2205/025C08L2205/035C08L2205/08C08L51/06C08L23/0815C08K13/06C08K2003/265C08K5/09C08K7/28C08K5/1345
Inventor 卢震宇梁志超杨龙曾富财孙华丽汪鹏跃
Owner YONGGAO CO LTD
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