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3D hollow blow molding micro-foaming polyolefin material and preparation method thereof

A polyolefin and micro-foaming technology, applied in the field of materials, can solve the problems of poor flow stability of micro-foaming melt, inability to accurately cover the shape of the mold, fluctuating length and shortness of the exit tube embryo, etc., to achieve easy industrialization and eliminate surface Defects, good apparent quality

Inactive Publication Date: 2020-01-14
NANJING JULONG SCI&TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these applications are mainly concentrated in traditional 2D blow molding applications, and the emerging 3D blow molding still cannot meet the molding requirements. The challenges are as follows: 1) When the existing micro-foaming material is blow-molded, the outlet expansion ratio is too large and uneven, and the shape of the mold cannot be accurately covered, resulting in product rupture or even failure to close the mold; 2) Micro-foaming during the molding process The melt flow stability is poor, and the outlet tube blank will be long and short; 3) The melt strength is insufficient

Method used

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  • 3D hollow blow molding micro-foaming polyolefin material and preparation method thereof
  • 3D hollow blow molding micro-foaming polyolefin material and preparation method thereof
  • 3D hollow blow molding micro-foaming polyolefin material and preparation method thereof

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Effect test

Embodiment 1

[0031] The preparation method of the 3D hollow blown micro-foamed polyolefin material includes the following steps:

[0032] Step 1: 100 parts of polyolefin are respectively 50 parts of polypropylene and 50 parts of polyethylene; the hyperbranched polymer is 1 part of hyperbranched polystyrene, the filler is 15 parts of natural hemp fiber, and the compatibilizer is grafted with maleic anhydride. 5 parts of polypropylene, 5 parts of oxidized polyethylene wax as viscosity modifier, 5 parts of zinc oxide as foaming aid, and 0.3 part of antioxidant 1010. Mix in the mixer for 3 minutes in parts by weight, and add to the twin screw through a hopper In the extruder, pelletize at a temperature of 150-250°C and the screw speed is 200r / min to obtain polyolefin composite materials;

[0033] Step 2: The blowing agent is 3 parts of nano-calcium oxide modified sodium carbonate and the polyolefin composite material obtained in step 1 is fully mixed in advance in a high-mixer according to parts by...

Embodiment 2

[0035] The preparation method of the 3D hollow blow molding micro-foamed polyolefin material includes the following steps:

[0036] Step 1: The polyolefin is 75 parts of polybutene, the hyperbranched polymer is 7 parts of hyperbranched polyether, the filler is 10 parts of natural hemp fiber, the compatibilizer is 3 parts of acrylate grafted polyethylene, and the viscosity modifier is Polyoxyethylene 4 parts, foaming aid calcium dihydrogen phosphate 7 parts, antioxidant 168 is 1 part, according to weight parts in the mixer for 2 minutes, added to the twin-screw extruder through the hopper, at 150- Pelletizing at a temperature of 250°C and a screw speed of 500r / min to obtain a polyolefin composite material;

[0037] Step 2: The foaming agent is 5 parts of nano-magnesium oxide modified ammonium bicarbonate and the polyolefin composite material obtained in step 1 is fully mixed in advance in a high-mixer according to parts by weight, and then added to the barrel of the blow molding mac...

Embodiment 3

[0039] The preparation method of the 3D hollow blow molding micro-foamed polyolefin material includes the following steps:

[0040] Step one: 80 parts of polyolefin, 20 parts of polypropylene and 60 parts of polyethylene; hyperbranched polymer: 5 parts of hyperbranched polyester; material: 6 parts of glass fiber; compatibilizer: maleic anhydride grafted polymer 2 parts of propylene; 3 parts of propylene-styrene copolymer as viscosity modifier, 2 parts of sodium gluconate as foaming aid, 0.3 parts of antioxidant 1010, according to weight parts, mixed in the mixer for 1 min, and added through the hopper In a twin-screw extruder, pelletize at a temperature of 150-250°C with a screw speed of 800r / min to obtain polyolefin composite materials;

[0041] Step 2: Mix 4 parts of the foaming agent nano-calcium oxide modified sodium carbonate with the polyolefin composite material obtained in Step 1 in advance in a high-mixer according to parts by weight, and then add it to the barrel of the b...

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Abstract

The invention relates to a blow molding micro-foaming polyolefin material and a preparation method thereof, particularly to a 3D hollow blow molding micro-foaming polyolefin material and a preparationmethod thereof, wherein the material comprises, by weight, 75-100 parts of polyolefin, 1-10 parts of a hyperbranched polymer, 3-15 parts of a filler, 1-5 parts of a compatilizer, 1-5 parts of a viscosity regulator, 1-5 parts of a foaming agent, 1-7 parts of a foaming aid and 0.3-1 part of an antioxidant. The invention also discloses a preparation method of the material. According to the invention, the hollow blow molding micro-foaming polyolefin material has characteristics of small outlet expansion ratio, stable flowing, high melt strength, high cell density, good apparent quality and the like, and meets the 3D hollow blow molding micro-foaming molding requirements; and the light weight of the blow-molded product is realized, the leftover materials in the molding process are reduced, themanufacturing cost of the product is remarkably reduced, and the product has characteristics of good heat insulation, good noise reduction and the like.

Description

Technical field [0001] The invention relates to a blow-molded micro-foaming material and a preparation method thereof, in particular to a micro-foaming polyolefin material capable of realizing 3D hollow blow molding and a preparation method thereof, and belongs to the technical field of materials. Background technique [0002] Micro-foaming technology is one of very effective lightweight technologies and has a very wide range of applications. It has been applied in the blow molding industry, such as packaging bottles, hollow containers, pipes, etc. However, these applications are mainly concentrated in traditional 2D blow molding applications, and the emerging 3D blow molding still cannot meet the molding requirements. For example, when blowing automotive air ducts and other products, the existing micro-foaming materials are mainly facing The challenges are as follows: 1) When the existing micro-foam material is blow-molded, the outlet expansion ratio is too large and uneven, wh...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L23/06C08L25/06C08L1/02C08L51/06C08L23/20C08L71/00C08L67/00C08L83/04C08K3/22C08K7/14C08K7/06C08J9/08C08J9/04
CPCB29C44/02B29C49/0005B29C69/02C08J9/0061C08J9/0071C08J9/0085C08J9/04C08J9/08C08J2203/02C08J2323/06C08J2323/12C08J2323/20C08J2401/02C08J2423/12C08J2425/06C08J2451/06C08J2467/00C08J2471/00C08J2483/04C08K7/06C08K7/14C08K2003/2206C08K2003/222C08K2003/2241C08K2201/011
Inventor 王滨刘曙阳蒋顶军
Owner NANJING JULONG SCI&TECH CO LTD