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Polypropylene composition and polypropylene material as well as application thereof

A polypropylene composition, polypropylene technology, used in soil protection, fixed capacitor dielectrics, construction, etc., can solve problems such as low tensile strain and high tensile strength

Active Publication Date: 2015-04-29
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the preparation process of the existing biaxially stretched geogrid and biaxially stretched capacitor film, although the transparency or mechanical properties can be improved by adding a nucleating agent to the polypropylene or polyethylene matrix, it is still difficult Obtain biaxially oriented geogrids and biaxially oriented capacitor films that combine lower tensile strain, higher tensile strength, and better heat resistance and long-term creep strength

Method used

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  • Polypropylene composition and polypropylene material as well as application thereof

Examples

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preparation example Construction

[0039] In the preparation process of the polypropylene material, in order to obtain a more uniform polypropylene material, a step of uniformly mixing the polypropylene composition is preferably included before the melt extrusion molding. The methods and conditions for uniformly mixing the polypropylene composition are well known to those skilled in the art. For example, the polypropylene composition can be added to various existing mixing equipment and stirred uniformly, wherein the mixing equipment Examples include mixers, kneaders, mills, internal mixers, and the like. The temperature and time of stirring and mixing are well known to those skilled in the art. For example, the temperature of stirring and mixing can be 25-65° C., the time of stirring and mixing can be 1-30 minutes, and the rotating speed of stirring and mixing can be 50-300 rpm .

[0040] In addition, the present invention also provides the application of the polypropylene composition and / or polypropylene mat...

Embodiment 1

[0044] This example is used to illustrate the polypropylene composition and polypropylene material provided by the present invention and the preparation method thereof.

[0045] (1) Components:

[0046] Polypropylene resin (the melt mass flow rate MFR under the action of 2.16kg load at 230°C is 0.91g / 10min, the same below), 100 parts by weight;

[0047] The α crystal form nucleating agent is bis-1,3:2,4-(4'-propylbenzylidene)-1-propylsorbitol (Milliken, NX8000), 0.06 parts by weight;

[0048] The β crystal form nucleating agent is a substituted aromatic amide (Shanxi Institute of Chemical Industry, TMB-4), 0.02 parts by weight;

[0049] [β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid] pentaerythritol ester, 0.3 parts by weight;

[0050] Three (2,4-di-tert-butylphenyl) phosphite, 0.3 parts by weight;

[0051] Dilauryl thiodipropionate, 0.3 parts by weight;

[0052]Bis(2,2,6,6-tetramethyl-4-piperidinyl) sebacate, 0.2 parts by weight;

[0053] (2) Preparation method of...

Embodiment 2

[0056] This example is used to illustrate the polypropylene composition and polypropylene material provided by the present invention and the preparation method thereof.

[0057] (1) Components:

[0058] Polypropylene resin, 100 parts by weight;

[0059] The α crystal form nucleating agent is bis-1,3:2,4-(4'-propylbenzylidene)-1-propylsorbitol (Milliken, NX8000), 0.02 parts by weight;

[0060] The β crystal form nucleating agent is a substituted benzamide (Shanxi Institute of Chemical Industry, TMB-5), 0.02 parts by weight;

[0061] [β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid] pentaerythritol ester, 0.3 parts by weight;

[0062] Three (2,4-di-tert-butylphenyl) phosphite, 0.3 parts by weight;

[0063] Dilauryl thiodipropionate, 0.2 parts by weight;

[0064] (2) Preparation method of polypropylene material:

[0065] In the same manner as in Example 1, polypropylene material C2 was obtained.

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Abstract

The invention provides a polypropylene composition and a polypropylene material as well as an application thereof. The polypropylene composition comprises polypropylene, a nucleating agent and an antioxidant, wherein the nucleating agent comprises a crystal form alpha nucleating agent and a crystal form beta nucleating agent, the crystal form alpha nucleating agent is selected from one or more of an inorganic crystal form alpha nucleating agent, a sorbitol nucleating agent and an organic phosphate nucleating agent, and the crystal form beta nucleating agent is selected from one or more of a mixture of binary acid and an II Ath group of metal salts, a rare earth crystal form beta nucleating agent and an amide nucleating agent. The polypropylene material prepared from the polypropylene composition provided by the invention can be used for well integrating effects of relatively low tensile strain, relatively high tensile strength and relatively good heat resistance and long-term creeping strength, and has great industrial application prospects.

Description

technical field [0001] The present invention relates to a polypropylene composition, a polypropylene material prepared from the polypropylene composition, and the use of the polypropylene composition and / or polypropylene material in preparing a biaxially stretched geogrid or a biaxially stretched capacitor film Applications. Background technique [0002] Polypropylene (PP) has become an important material in industrial applications due to its excellent mechanical properties and chemical corrosion resistance since it was put into use in the 1960s. Polypropylene has many crystal forms, such as α, β, γ, δ and pseudo-hexagonal crystal. Nucleating agents are usually divided into inorganic nucleating agents, organic nucleating agents and high melting point polymer nucleating agents, and are also often divided into α crystal nucleating agents and β crystal nucleating agents. According to the subdivision of the structure, the α crystal nucleating agent and the β crystal nucleating...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08K13/02C08K5/053C08K5/20C08K3/22C08K3/34C08K3/04C08K3/26C08K5/523C08K5/092C08K5/098E02D3/00H01G4/18
CPCC08K5/00C08K5/092C08K5/098C08K5/1345C08K5/1545C08K5/20C08K5/3435C08K5/372C08K5/526C08K13/02C08L2201/08C08L2203/20C08L2205/24C08L2205/242E02D3/00C08L23/12
Inventor 李涛杜建强左英飞王希
Owner CHINA PETROLEUM & CHEM CORP
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