A kind of polypropylene composition and preparation method thereof

A polypropylene composition and polypropylene resin technology, applied in the field of polypropylene composition and its preparation, can solve the problems of not being able to significantly improve the barrier properties of polypropylene, unable to meet the requirements, and achieve good barrier properties, easy operation and simple process. Effect

Active Publication Date: 2011-12-21
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, petroleum resin cannot fundamentally improve the lattice defects in the amorphous region of polypropylene molecules, and the addition of petroleum resin alone cannot significantly improve the barrier properties of polypropylene, thus failing to meet the requirements of practical use.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～4

[0028] Polypropylene (Shanghai Petrochemical, brand F280S, melt index 2.9g / 10min), polypropylene β-nucleating agent (Shanxi Provincial Research Institute of Chemical Industry, brand TMB-5, substituted aromatic amide nucleating agent), hydrogenated C 5 Petroleum resin (Lanzhou Petrochemical, LH100-1), erucamide (Akzo, Netherlands, ARMOSLIP EPOWDER), and antioxidant (Swiss Ciba Specialty Chemical Company, B225) were stirred evenly (see Table 1 for the specific formula, and the contents of each component were parts by weight), using a twin-screw extruder to melt, blend, extrude and granulate, with an extrusion temperature of 190-230° C. and a screw speed of 300 rpm. The particles obtained by the extruder were dried at 90°C for 6 hours, and then film samples were prepared by compression molding at 190°C to test the oxygen permeability. The results are shown in Table 1.

Embodiment 5～8

[0030] Polypropylene (Zhonglan Tianjin Chemical Plant, grade 4# powder, melt index 5.14g / 10min), polypropylene β nucleating agent (Guangdong Weilinna Functional Materials Co., Ltd., grade WBG-II, rare earth nucleating agent ), dicyclopentadiene petroleum resin (D5100, Sino-German petroleum resin), erucamide (Akzo, Netherlands, ARMOSLIP E POWDER), antioxidant (Swiss Ciba Specialty Chemical Company, B225) after stirring evenly (see Table 1, the content of each component is in parts by weight), using a twin-screw extruder to melt, blend, extrude and granulate, and the rest of the steps and conditions are the same as the aforementioned Examples 1-5. The performance results are shown in Table 1.

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Abstract

The invention provides a polypropylene composition, comprising the following components in part by weight: 100 parts of polypropylene resin, 0.1-1.5 parts of petroleum resin and/or resin obtained by polymerization of alpha-methyl styrene, indenyl alkene, and terpene and 0.01-1 part of beta nucleating agent. In the polypropylene composition, the blocking property for oxygen is good; in the preparation method, the process is simple, the condition is easy to control, and the applicability is strong; and the invention can be used for the packaging fields such as medicines, foods and other aspects with requirements for blocking and sanitation and the like.

Description

technical field [0001] The invention relates to a polypropylene composition and a preparation method thereof. Specifically, it relates to a polypropylene composition with good oxygen barrier properties and a preparation method thereof. technical background [0002] Polypropylene is a general-purpose plastic with good comprehensive properties and is widely used in many fields. The outstanding advantage of using polypropylene as a barrier packaging material is its excellent water vapor barrier performance. Some common barrier materials for oxygen and carbon dioxide, such as ethylene-vinyl alcohol copolymer (EVOH), polyethylene terephthalate (PET), etc., will rapidly decrease their barrier properties in the presence of water vapor. In addition, polypropylene (PP) has good hygienic performance, is easy to recycle, is environmentally friendly, and meets the current environmental protection requirements. However, currently commonly used high-barrier materials such as polyvinyl ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/14C08L57/02C08L25/16C08L45/00C08K5/098C08K5/092C08K5/20
Inventor 元文芳金滟丁树岩蔡涛刘善元石胜鹏张静
Owner CHINA PETROLEUM & CHEM CORP
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