Foamed polypropylene composition, foamed polypropylene plate and preparation method thereof

A technology of foamed polypropylene and polypropylene, which is applied in the field of foamed polypropylene composition, foamed polypropylene sheet and its preparation, can solve the problems of poor cell quality and affecting the mechanical properties of materials, and achieve smooth surface and durable High thermo-oxidative aging performance and uniform pore size distribution

Active Publication Date: 2020-10-30
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the poor quality of the formed cells of the polypropylene foam material, which affects the mechanical properties of the material, and needs to improve the heat and oxygen aging resistance, and provides a foamed polypropylene composition, a foamed polypropylene sheet and its Preparation

Method used

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  • Foamed polypropylene composition, foamed polypropylene plate and preparation method thereof
  • Foamed polypropylene composition, foamed polypropylene plate and preparation method thereof
  • Foamed polypropylene composition, foamed polypropylene plate and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment approach

[0031] According to a preferred embodiment of the present invention, the composition content of the mixed C4 can be 5-10% by weight of 1-butene, 5-15% by weight of isobutene, 10-20% by weight of 1,3-butadiene, 1 , 5-15% by weight of 2-butadiene, 0.5-5% by weight of n-butane, 0.5-2% by weight of isobutane, 20-40% by weight of cis-2-butene, 2-10% by weight of trans-2-butene %, vinyl acetylene 5-20% by weight.

[0032] According to another preferred embodiment of the present invention, the composition content of the mixed C4 can be 0.1-2% by weight of 1-butene, 10-30% by weight of isobutene, 0.01-0.1% by weight of 1,3-butadiene, 0.5-5% by weight of n-butane, 30-40% by weight of isobutane, 20-40% by weight of cis-2-butene, and 5-20% by weight of trans-2-butene.

[0033] According to another preferred embodiment of the present invention, the composition content of the mixed C4 can be 5-15% by weight of 1-butene, 0.5-3% by weight of isobutene, 20-30% by weight of n-butane, cis-2-bu...

preparation example 1

[0106] Polypropylene HMSPP101 and HMSPP102 were prepared respectively according to the methods of Example 1 and Example 2 in CN102134290A.

[0107] HMSPP101: The melt flow rate at 230° C. and a load of 2.16 kg is 1.6 g / 10 min, the molecular weight distribution Mw / Mn is 11.2, and the dispersion index PI is 15.0. The density is 0.895-0.905g / cm 3 within range.

[0108] HMSPP102: The melt flow rate at 230° C. and a load of 2.16 kg is 2.7 g / 10 min, the molecular weight distribution Mw / Mn is 11.1, and the dispersion index PI is 9.3. The density is 0.895-0.905g / cm 3 within range.

preparation example 2

[0110] Preparation of Mixed Butene-Maleic Anhydride Copolymer Microspheres

[0111] Mixed butene-maleic anhydride copolymer microsphere powder A:

[0112] Under nitrogen protection, 15kg of mixed C4A is passed into a 200L reactor containing 22kg of maleic anhydride, 2.6kg of azobisisobutyronitrile and 100L of isoamyl acetate to carry out a copolymerization reaction. The reaction pressure is 0.98MPa, the copolymerization reaction temperature is 75°C, and the copolymerization reaction time is 6h;

[0113]Pass the copolymerization reaction product into the flash separator for gas-liquid separation at 25°C and 0MPa. The obtained liquid-solid mixture continues to be separated in the centrifuge at 4000rpm and centrifuged for 20min to obtain a solid product. Wash with hexane, filter the obtained filter cake through a sand core funnel and vacuum dry at 90°C for 8 hours to obtain mixed butene-maleic anhydride copolymer microsphere powder A. The copolymer powder was tested, wherein ...

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Abstract

The invention relates to the field of polypropylene foam materials, and discloses a foamed polypropylene composition, a foamed polypropylene plate and a preparation method thereof. The composition isprepared from the following components in parts by weight: 100 parts of high-melt-strength polypropylene, 0.05 to 2 parts of guanidine salt composite antibacterial agent, 0.05 to 5 parts of mildew preventive and 1 to 15 parts of foaming agent, wherein the high-melt-strength polypropylene is prepared from the following components in parts by weight: 100 parts of polypropylene, 0.1 to 0.3 part of antioxidant and 0.25 to 10 parts of mixed butene-maleic anhydride copolymer microspheres, wherein the particle size of the copolymer microspheres is 0.1-10 [mu] m. The foamed polypropylene which is compact in foam hole, uniform in pore size distribution, smooth in surface, high in thermo-oxidative aging resistance and capable of being recycled in a non-crosslinking mode can be prepared in an extrusion molding mode.

Description

technical field [0001] The invention relates to the field of polypropylene foam materials, in particular to a foamed polypropylene composition, a foamed polypropylene plate and a preparation method thereof. Background technique [0002] Polymer foam is composed of extremely small air cells and a thin air cell film that surrounds the air cells. Due to the high volume ratio of gas, good heat insulation, cushioning, and floating properties, and high cost performance, it can be used in a wide range of fields. In recent years, polypropylene resin foam has been widely used in thermal insulation building materials, automotive components, packaging cushioning materials and other fields due to its good performance and cost balance, and can be recycled. For example, as a thermal insulation building material, polypropylene resin foamed boards are used in building floors or inside walls, showing good thermal insulation performance, and are widely recognized and used in the market. [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/20C08L35/00C08L79/00C08L9/06C08L9/02C08L83/04C08K13/02C08K5/134C08K5/526C08K5/098C08K5/47C08K5/378C08J9/10C08J9/12
CPCC08J9/0023C08J9/0033C08J9/0038C08J9/0061C08J9/0066C08J9/0095C08J9/103C08J9/122C08J2323/12C08J2409/02C08J2409/06C08J2423/20C08J2435/00C08J2479/00C08J2483/04
Inventor 郭鹏吕明福张师军解娜徐耀辉陈若石白弈青
Owner CHINA PETROLEUM & CHEM CORP
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