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Inorganic filler modifier and modified inorganic filler and preparation method and application thereof, and polypropylene composite material and preparation method thereof

A technology of inorganic fillers and composite materials, applied in the field of inorganic filler modifiers, can solve the problems of large amount of addition, difficulty in high rigidity and toughness balance, etc.

Active Publication Date: 2021-06-15
CHNA ENERGY INVESTMENT CORP LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] CN102311583A discloses a method for preparing rigid-tough balanced polypropylene. By combining various polypropylene resins, treating talcum powder with a coupling agent, and using a toughening agent for impact modification, the rigidity of the composition reaches about 2500 MPa. But its corresponding impact strength is only 14.1KJ / m 2
In the disclosed technology, whether it is to improve the toughness by using a toughening agent, or to improve the rigidity by adding inorganic rigid particles, it is difficult to simply adjust the polypropylene matrix, toughening agent, and inorganic rigidity due to the corresponding large amount of addition. The ratio between the three particles achieves a balance of high rigidity and toughness
[0008] From the currently disclosed technology, the flexural modulus of high rigidity and high toughness polypropylene composition is basically below 2000MPa, most of them are below 1500MPa, and the notched impact strength is below 40KJ / m 2 Below, mostly at 30KJ / m 2 Below, it is difficult to further improve the balance of rigidity and toughness of the product

Method used

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  • Inorganic filler modifier and modified inorganic filler and preparation method and application thereof, and polypropylene composite material and preparation method thereof
  • Inorganic filler modifier and modified inorganic filler and preparation method and application thereof, and polypropylene composite material and preparation method thereof

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Embodiment approach

[0042] The purpose of the benzene invention can be achieved by adopting the aforementioned modifying agent of the present invention to modify the inorganic filler. According to a preferred embodiment of the present invention, the present invention provides a preparation method of the modified inorganic filler, which method comprises: The filler, the interfacial compatibilizer and the beta nucleating agent are mixed uniformly, wherein the inorganic filler is glass fiber and / or talc.

[0043] According to the method of the present invention, the preferred weight ratio of the β-nucleating agent to the interfacial compatibilizer is 0.04-2:1, preferably 0.2-0.5:1.

[0044] According to the method of the present invention, the types of the β-nucleating agent and the interfacial compatibilizer have been introduced in detail above, and will not be repeated here.

[0045] According to the method of the present invention, preferably the inorganic filler is talcum powder, more preferably...

Embodiment 1

[0077] With 100 parts of talcum powder (brand 3CA, France IMERYS company), 1.5 parts of MAH-PP powder (100 mesh, grafting rate 1.0%), 1.2 parts of β nucleating agent (WBG-II, Guangdong Weilinna Functional Materials Co., Ltd.) and 1.5 parts of silane coupling Agent (KH-570, Chengdu Zhenxing Chemical Co., Ltd.) was placed in a high-speed mixer with heating function (temperature was set at 80° C.) and mixed for 3 minutes at a low speed (the rotating speed was 50 rpm, and the rest of the examples were the same as the comparative examples), and then mixed at a high speed (the rotating speed was 50 rpm). Be 200rpm, all the other examples and comparative example are identical) mix 5min, obtain (C) modified talcum powder and transfer 29 parts to the side feeding port of twin-screw extruder after mixing homogeneously;

[0078] 26 parts of homopolypropylene (PPH, L5E89, MI=3.0g / 10min, 2.16kg, 230°C), 30 parts of propylene random copolymer (PPR, C4220, MI=0.5g / 10min, 2.16kg, 230 ℃), 14...

Embodiment 2

[0082] With 100 parts of talcum powder (brand 3CA, France IMERYS Company), 1.8 parts of MAH-PP powder (100 mesh, grafting rate 1.0%), 0.6 parts of β-nucleating agent (WBG-II, Guangdong Weilinna Functional Materials Co., Ltd.) and 1.8 parts of silane coupling The agent (KH-570, Chengdu Zhenxing Chemical Co., Ltd.) was placed in a high-speed mixer with heating function (the temperature was set at 90°C) and mixed at a low speed for 3 minutes and at a high speed for 5 minutes. After mixing evenly, (C) modified talc powder was obtained and Transfer 34 parts to the side feed port of the twin-screw extruder;

[0083] 15 parts of homopolypropylene (PPH, L5E89, MI=3.0g / 10min, 2.16kg, 230°C), 15 parts of propylene random copolymer (PPR, C4220, MI=0.5g / 10min, 2.16kg, 230 ℃), 20 parts of propylene block copolymer (PPB, BA212E, MI=0.3g / 10min, 2.16kg, 230℃), 15 parts of ethylene-octene copolymer (POE, 8150, MI=0.5g / 10min, 2.16kg, 190°C) and 1 part of additive (0.7 part of lubricant calciu...

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Abstract

The invention relates to the field of polymer materials, and specifically provides an inorganic filler modifier, which includes: an interface compatibilizer and a β nucleating agent, wherein the weight ratio of the β nucleating agent to the interface compatibilizing agent is 0.04 -2:1. The invention provides a modified inorganic filler and its preparation method and application. The method comprises: uniformly mixing an inorganic filler, an interface compatibilizer and a beta nucleating agent, wherein the inorganic filler is glass fiber and / or talc. The invention provides a polypropylene composite material and a preparation method thereof. In the present invention, on the basis of traditional rigid-toughness balanced polypropylene technology, through surface nucleation technology and optimized elastomer combination technology, the toughness of the formula system is improved, rigid particle surface treatment technology and interface compatibilization technology are used to improve inorganic rigid particles and The compatibility and binding force of the resin can improve the rigidity of the formulation system.

Description

technical field [0001] The invention relates to an inorganic filler modifier, a modified inorganic filler, a preparation method and application thereof, and a polypropylene composite material and a preparation method thereof. Background technique [0002] As one of the five traditional general-purpose plastics, polypropylene has the advantages of low price, low density, high temperature resistance, chemical corrosion resistance, and easy processing. The product is widely used, but its shortcomings of high brittleness and low notched impact strength are also very obvious. , limiting the further expansion of its application field. [0003] In order to improve the toughness of polypropylene, a large amount of plasticizer or elastomer is usually added to the formulation system for modification, but the addition of either plasticizer or elastomer often leads to a decrease in rigidity and heat resistance, while improving The rigidity of polypropylene is mainly due to the addition...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/14C08L23/12C08L23/08C08K9/06C08K9/04C08K3/34C08L55/00
CPCC08L23/12C08L23/14C08L53/00C08L2205/02C08L2205/03C08L2205/035C08L23/0815C08K9/06C08K9/04C08K3/34
Inventor 刘国刚马伊梁文斌常贺飞张寅灵于芳张春波
Owner CHNA ENERGY INVESTMENT CORP LTD