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Low-oriented extrusion grade polypropylene material and preparation method thereof

A technology of polypropylene material and extrusion grade, which is applied in the field of polypropylene material and its preparation, can solve the problems of large orientation, restriction, uneven distribution of mechanical properties, etc., achieve low cost, easy operation of production process, improve mechanical properties and uniformity sexual effect

Inactive Publication Date: 2014-11-05
SUZHOU EXCELLENCE ENG PLASTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the market competition of modified polypropylene materials is fierce, but there are also some problems in the production of polypropylene. For example, when polypropylene is extruded, the orientation is relatively large, which leads to uneven distribution of mechanical properties of the material, especially the flow of the material. The unnotched impact performance of the direction is much greater than that of the vertical direction, which greatly limits the application of materials. The development of low-oriented polypropylene materials and the expansion of their application range are major problems that the industry needs to solve

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A method for preparing low-oriented extrusion-grade polypropylene material, comprising the following steps:

[0036] 1) raw material preparation: take by weight: polypropylene resin, 60 parts; the polypropylene resin is a copolymer of polypropylene and polyethylene, the weight ratio between polypropylene and polyethylene in the copolymerized polypropylene It is 99:1.

[0037] PTFE, 3 parts;

[0038] Toughening agent, 3.8 parts; Described toughening agent is high-density polyethylene, and the molecular weight of described high-density polyethylene is 40000.

[0039] Heat-resistant modifier, 10 parts; The heat-resistant modifier is a maleic anhydride series modifier, and the maleic anhydride content in the maleic anhydride series modifier is 5%, and the maleic anhydride series modifier The relative molecular mass of the active agent is 165,000.

[0040] Stuffing, 23 parts;

[0041] Lubricant, 0.1 parts;

[0042] Antioxidant, 0.1 part; Described antioxidant is antioxi...

Embodiment 2

[0047] A method for preparing low-oriented extrusion-grade polypropylene material, comprising the following steps:

[0048] 1) raw material preparation, take by weight: polypropylene resin, 63.5 parts; described polypropylene resin is the copolymer of polypropylene and polyethylene, the weight ratio between polypropylene and polyethylene in described copolymerized polypropylene It is 95:5. Polytetrafluoroethylene, 2.5 parts; Toughening agent, 3 parts; The toughening agent is high-density polyethylene, and the molecular weight of the high-density polyethylene is 300,000. Heat-resistant modifier, 5 parts; The heat-resistant modifier is a maleic anhydride series modifier, and the maleic anhydride content in the maleic anhydride series modifier is 5%, and the maleic anhydride series modifier The relative molecular mass of the active agent is 165,000. Filler, 25 parts; Lubricant, 0.5 part; Antioxidant, 0.5 part; The antioxidant is antioxidant 168. Dry the above raw materials at ...

Embodiment 3

[0052] A method for preparing low-oriented extrusion-grade polypropylene material, comprising the following steps:

[0053] 1) raw material preparation: take by weight: polypropylene resin, 89.8 parts; described polypropylene resin is the copolymer of polypropylene and polyethylene, the weight ratio between polypropylene and polyethylene in described copolymerized polypropylene 95:5

[0054] Teflon, 2 parts;

[0055] Toughening agent, 1 part; the toughening agent is high-density polyethylene, and the molecular weight of the high-density polyethylene is 40,000-300,000.

[0056] stuffing, 7 servings;

[0057] Lubricant, 0.1 parts;

[0058] Antioxidant, 0.1 part; Described antioxidant is antioxidant 1010.

[0059] Dry each component material at a temperature of 70°C for 2 hours, and keep the material in a dry state;

[0060] 2) Mixing: Add the dried material in step 1) into a high-speed mixer and dry mix for 5 minutes;

[0061] 3) Extrusion: Add the completely dry-mixed mat...

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Abstract

The invention discloses a low-oriented extrusion grade polypropylene material. The polypropylene material comprises the following components in parts by weight: 60-90 parts of polypropylene resin, 2-3 parts of polytetrafluoroethylene, 1-5 parts of toughening agent, 0-10 parts of heat-resistant modifier, 7-28 parts of packing, 0.1-1 part of lubricant and 0.1-1 part of antioxidant, wherein the polypropylene resin is a copolymer of polypropylene and polyethylene, and the weight ratio of polypropylene to polyethylene in the polypropylene copolymer is 95 to 5-99 to 1. According to the low-oriented extrusion grade polypropylene material and a preparation method thereof, polytetrafluoroethylene is added in the formula, so that the melt strength of the polypropylene material can be improved, then the orientation of the polypropylene material is reduced, the vertical unnotched impact of polypropylene is improved on the basis of little change of flow-directional unnotched impact, and the mechanical properties and uniformity of the material are improved. The preparation method is simple, easy to operate and low in relative cost.

Description

technical field [0001] The invention relates to a polymer material technology, in particular to a polypropylene material and a preparation method thereof. Background technique [0002] Polypropylene (PP) is one of the fastest growing varieties in the plastics industry. It has the advantages of good mechanical properties, light specific gravity, non-toxicity, corrosion resistance, easy processing, etc., and the raw materials are easy to obtain and low in price, so it has been widely used in the fields of home appliances, automobiles, and packaging. At present, the market competition of modified polypropylene materials is fierce, but there are also some problems in the production of polypropylene. For example, when polypropylene is extruded, the orientation is relatively large, which leads to uneven distribution of mechanical properties of the material, especially the flow of the material. The unnotched impact performance of the direction is much greater than that of the vert...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08L27/18C08L23/08B29C47/92B29C48/92
CPCC08L23/14B29C48/92B29C2948/92704C08L2205/03C08L2207/062C08L27/18C08L23/06C08K5/1539
Inventor 陆春华陆培芳
Owner SUZHOU EXCELLENCE ENG PLASTICS
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