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

Active Publication Date: 2016-06-29
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 the single addition of additives, the comprehensive performance of the product has not been comprehensively improved.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

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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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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Patent Type & Authority Patents(China)
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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