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Nanometer inorganic material/polyolefine foaming material and preparation method thereof

A technology of polyolefin foaming and nano-inorganic particles, which is applied in the field of polyolefin foam materials, and can solve problems such as complex process, limitation of application and popularization of process, and decline in mechanical properties

Inactive Publication Date: 2009-12-09
国家复合改性聚合物材料工程技术研究中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If high melt strength polyolefin is directly used for foaming, although foamed polyolefin materials with better foaming quality can be obtained, because it is a special material, its foaming temperature range is relatively narrow; through chemical crosslinking Improving the melt strength of polyolefin and grafting can also improve the foaming quality of polyolefin, but the process of chemical crosslinking and grafting is more complicated; the blending of polyolefin with other resins to improve its melt strength should be considered Compatibility, otherwise it will lead to a great decline in mechanical properties
Therefore, the above method is subject to certain limitations both in technology and in application and promotion.

Method used

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  • Nanometer inorganic material/polyolefine foaming material and preparation method thereof
  • Nanometer inorganic material/polyolefine foaming material and preparation method thereof
  • Nanometer inorganic material/polyolefine foaming material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] Embodiment 1: (1) preparation of composite material: get nano-organic montmorillonite 4kg and polypropylene 12kg, mix homogeneously, extrude and make masterbatch on extruder, the masterbatch of extruding mixes with 54kg polypropylene again, The composite material is obtained by secondary extrusion on the extruder. The extrusion temperature of the two extrusions is 180°C, 185°C, 190°C, 195°C, 200°C, and 205°C from the blanking to the die opening temperature of the extruder. , 210°C, the speed is 200 rpm;

[0066] (2) Preparation of foam masterbatch and auxiliary agent masterbatch: with 1kg chemical blowing agent AC, take the same polypropylene as the carrier to make foam masterbatch containing AC10wt%; 2kg zinc oxide and 0.4kg zinc stearate Use the same brand of PP as the carrier to make a masterbatch of additives containing 10wt% of additives.

[0067] (3) Preparation of foaming material: Mix the composite material, 10kg of AC masterbatch and 20kg of foaming aid master...

Embodiment 2

[0068] Embodiment 2: (1) preparation of composite material: get nano-organic montmorillonite 5kg and high-density polyethylene 15kg, mix uniformly, extrude masterbatch on extruder, the masterbatch of extruding is mixed with 45kg high-density polyethylene again The ethylene is mixed evenly, and the composite material is obtained by secondary extrusion on the extruder. The extrusion temperature of the two extrusions is 180°C, 185°C, 190°C, 195°C, 200 ℃, 205℃, 210℃, the speed is 200 rpm;

[0069] (2) Preparation of foaming masterbatch and auxiliary agent masterbatch: with 1kg chemical blowing agent AC, take the same high-density polyethylene as the carrier to make foaming masterbatch containing AC10% (weight); 2kg zinc oxide and 0.4 kg zinc stearate and the same brand of high-density polyethylene as the carrier made of additives containing the total amount (zinc oxide+zinc stearate) / (zinc oxide+zinc stearate+PP) is 10 (weight)% same.

[0070] (3) Preparation of foaming material...

Embodiment 3

[0071] Embodiment 3: (1) preparation of composite material: get nano silicon dioxide 10kg and polypropylene 35kg, mix homogeneously, extrude and make masterbatch on extruder, the masterbatch of extruding mixes with 20kg polypropylene again, in The composite material is obtained by secondary extrusion on the extruder. The extrusion temperature of the two extrusions is 180°C, 185°C, 190°C, 195°C, 200°C, 205°C, 210°C, the speed is 220 rpm;

[0072] (2) masterbatch preparation: the preparation of foaming masterbatch and auxiliary agent masterbatch: with 5kg chemical blowing agent AC, make the foaming masterbatch that contains AC10% (weight) with same polypropylene as carrier; 10kg zinc oxide And 2kg zinc stearate and PP of the same grade are made as carrier and contain additive total consumption (zinc oxide+zinc stearate) / (zinc oxide+zinc stearate+PP) be 10 (weight)%.

[0073] (3) Preparation of foaming material: Mix the composite material, 10kg AC masterbatch and 20kg foaming ai...

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Abstract

The invention discloses a nanometer inorganic particle / polyolefine foaming material, which is prepared by polyolefine and nanometer inorganic particles added with chemical foaming agent and foaming auxiliary agent through injection molding. In the material, the nanometer inorganic particles are added into the polyolefine, and when the foaming material is prepared, the nanometer inorganic particles play a role in nucleating and improving viscosity of a polymer melt so as to improve the nucleation rate and melt viscosity of a foaming system, thereby achieving good foaming effect; and if the processing temperature of the foaming material is widened to be between 170 and 190 DEG C after nanometer organic montmorillonite is added, the prepared foaming material has small average diameter, even dimension distribution of cells, large cell density, good mechanical performance and low preparation cost.

Description

technical field [0001] The invention relates to the technical field of polyolefin foam materials, in particular to a nano inorganic particle / polyolefin foam material and a preparation method thereof. Background technique [0002] Foamed polymer has a series of characteristics such as low density, high specific strength, strong energy absorption capacity, good shock and shock resistance, and strong sound and heat insulation. It has been widely used in transportation, military industry, aerospace, electronics and daily necessities. widely used. Common foaming polymers mainly include polyurethane (PU), polystyrene (PS) and polyolefins. Among them, polystyrene foam products are difficult to degrade and recycle, and are recognized as "white pollution" in the world. The United Nations Environmental Protection Organization announced in 2005 to stop its production and use worldwide. Relatively speaking, polyolefins, especially polypropylene foamed plastics, have many advantages, s...

Claims

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Application Information

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IPC IPC(8): C08L23/00C08L23/06C08L23/12C08J9/06C08J9/10C08K9/04C08K3/36
Inventor 于杰何力张纯秦舒浩
Owner 国家复合改性聚合物材料工程技术研究中心
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