MICROFOAM POLYPROPYLENE COMPOSITION, AND PREPARATION METHOD THEREFOR AND APPLICATION THEREOF

Title:

MICROFOAM POLYPROPYLENE COMPOSITION, AND PREPARATION METHOD THEREFOR AND APPLICATION THEREOF

Document Type and Number:

WIPO Patent Application WO/2023/024939

Kind Code:

A1

Abstract:

Disclosed in the present invention are a microfoam polypropylene composition, and a preparation method therefor and an application thereof. The microfoam polypropylene composition consists of a polypropylene composite material and a foaming agent; the polypropylene composite material comprises the following components in parts by weight: 76-86 parts of polypropylene resin, 5-10 parts of polyamide resin, 2-8 parts of a crosslinking agent, 5-20 parts of nano-metal oxide, 3-8 parts of a compatibilizer, and 0-2 parts of other additives; the melt flow rate of the polypropylene resin is 1.8-5.0 g/10 min under the conditions of 230°C and 2.16 kg; the melting point of the polyamide resin is 155-210°C; the nano-metal oxide is treated with a cationic surfactant. By blending a small amount of polyamide resin having a low melting point in the polypropylene resin and synergizing with the nano-oxide treated with the cationic surfactant, the mechanical properties of the microfoam polypropylene composition are effectively improved, so that the notched izod impact strength of the polypropylene composition at -30°C is greater than or equal to 7.7 kJ/m2.

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Inventors:

CHEN JIAJIE (CN)
CHEN PINGXU (CN)
YE NANBIAO (CN)
YU FEI (CN)
YANG BO (CN)
WU GUOFENG (CN)
LUO ZHONGFU (CN)
CHEN YANAN (CN)

Application Number:

PCT/CN2022/112211

Publication Date:

March 02, 2023

Filing Date:

August 12, 2022

Export Citation:

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Assignee:

KINGFA SCI &TECH CO LTD (CN)

International Classes:

C08L23/14; C08J9/08; C08K3/22; C08K9/04; C08L77/00

Foreign References:

CN113652029A	2021-11-16
CN107987453A	2018-05-04
CN113248829A	2021-08-13
CN103739957A	2014-04-23

Attorney, Agent or Firm:

YOGO PATENT AND TRADEMARK AGENCY LIMITED COMPANY (CN)

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