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Polypropylene composition, polypropylene material, and applications of polypropylene composition and polypropylene material

A polypropylene composition and polypropylene technology, applied in the polymer field, can solve the problems of inability to use injection-molded thin-walled products, poor toughness, and low shrinkage rate.

Active Publication Date: 2018-03-27
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the disadvantages of insufficient fluidity of existing polypropylene materials, the shortcomings of being unable to be used for injection molding thin-walled products, and / or the disadvantages of poor toughness and / or low shrinkage of existing polypropylene materials, and Provided is a new polypropylene composition, a polypropylene material prepared from the polypropylene composition, and the application of the polypropylene composition and / or polypropylene material in the preparation of seedling trays

Method used

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  • Polypropylene composition, polypropylene material, and applications of polypropylene composition and polypropylene material

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preparation example Construction

[0035] 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 300-3000 rpm .

[0036] According to a specific manner of the present invention, the preparation method of the polypropylene material of the prese...

Embodiment 1

[0041] (1) Based on the total weight of the polypropylene composition, the components and their percentages are:

[0042] Impact copolymer polypropylene resin (at 230°C, the melt mass flow rate MFR under the load of 2.16kg is 30g / 10min, the content of ethylene structural unit is 7% by weight, and the content of rubber phase is 12% by weight), 78.95% by weight %;

[0043] Hydrogenated styrene-butadiene block copolymer (Shore hardness D is 45, the content of SEBS is 85% by weight, mineral oil oil extension is 10% by weight), 18% by weight;

[0044] Tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate]pentaerythritol ester, 0.2% by weight;

[0045] Tris(2,4-di-tert-butylphenyl)phosphite, 0.15% by weight;

[0046] The polymer of succinic acid and 4-hydroxy-2,2,6,6-tetramethyl-1-piperidinol (light stabilizer 622, BASF, Germany, UV366), 0.2% by weight;

[0047] Hydrogenated palm oil glycerides, oleic acid glycerides and polyglycerides are compounded in a weight ratio of 1:1:1...

Embodiment 2

[0052] (1) Based on the total weight of the polypropylene composition, the components and their percentages are:

[0053] Impact copolymer polypropylene resin (the melt mass flow rate MFR under the action of 2.16kg load at 230°C is 28g / 10min, the content of ethylene structural unit is 9% by weight, and the content of rubber phase is 24% by weight), 76.7% by weight %;

[0054] Hydrogenated styrene-butadiene block copolymer (Shore hardness D is 40 degrees, the content of SEBS is 80% by weight, and mineral oil oil extension is 15% by weight), 20% by weight;

[0055] Tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate]pentaerythritol ester, 0.2% by weight;

[0056] Tris(2,4-di-tert-butylphenyl)phosphite, 0.2% by weight;

[0057]Dilauryl thiodipropionate, 0.25 parts by weight;

[0058] Bis(2,2,6,6-tetramethyl-4-piperidinyl) sebacate, 0.25% by weight;

[0059] Oleamide, 0.4% by weight;

[0060] Masterbatch, 2% by weight.

[0061] (2) The preparation method of polypropylen...

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Abstract

The present invention relates to the field of polymers, particularly to a polypropylene composition, a polypropylene material, and applications of the polypropylene composition and the polypropylene material, wherein the polypropylene composition contains, by weight, 64-90% of anti-impact co-polypropylene, 9-35% of a thermoplastic elastomer, and 0.2-1.5% of an antioxidant. According to the presentinvention, the polypropylene material has advantages of good fluidity, good shrinkage, rigidity and toughness balance, heat aging resistance and environmental aging resistance, and cannot produce stress whitening after bending 90 DEG; and the polypropylene composition and / or the polypropylene material are particularly suitable for the preparation of pot seedling cultivation disks.

Description

technical field [0001] The present invention relates to the field of polymers, in particular to a polypropylene composition, a polypropylene material prepared from the polypropylene composition, and the application of the polypropylene composition and / or polypropylene material in the preparation of seedling trays . Background technique [0002] The pot seedling transplanting complete equipment technology is a new seedling raising and transplanting technology, which is a completely different technical route from the common blanket seedling rice cultivation technology. The pot seedling transplanting complete equipment technology is a new set of new rice cultivation technology developed on the basis of manual transplanting technology, manual throwing and other mechanical transplanting cultivation techniques. Compared with the traditional blanket seedling rotary forced transplanting method, it has The seedling feeding form of the rotary slideway mechanism has the advantages of ...

Claims

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Application Information

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IPC IPC(8): C08L23/16C08L53/02C08K5/00
CPCC08L23/14C08L2201/08C08L2205/03C08L2207/04C08L53/025C08K5/00
Inventor 杜建强王希梁静王妍
Owner CHINA PETROLEUM & CHEM CORP
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