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Polymer melt strength modifier and preparation method and application thereof, polypropylene composition and polypropylene material and preparation method thereof

A melt strength and modifier technology, applied in the field of polypropylene materials, can solve the problem of not giving melt strength measurement data, etc., and achieve the effect of improving melt strength and improving melt strength.

Active Publication Date: 2018-07-17
CHNA ENERGY INVESTMENT CORP LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This technique measures the mechanical properties and melt flow rate of the sample, but does not give the measurement data of the melt strength

Method used

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  • Polymer melt strength modifier and preparation method and application thereof, polypropylene composition and polypropylene material and preparation method thereof
  • Polymer melt strength modifier and preparation method and application thereof, polypropylene composition and polypropylene material and preparation method thereof
  • Polymer melt strength modifier and preparation method and application thereof, polypropylene composition and polypropylene material and preparation method thereof

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preparation example Construction

[0023] As mentioned above, the present invention provides a method for preparing a polymer melt strength modifier, the method comprising: contacting polar monomer-grafted polypropylene with an amine-containing substance for reaction extrusion granulation, and then Drying; Wherein, the polar monomer can chemically react with the amine-containing substance, the amine-containing substance includes compound A and compound B, and the compound A is a compound containing an amine group, an ether bond and an aryl group The organic compound of the group, the compound B is a polyamine.

[0024] According to the preparation method of the present invention, the compound A is different from the compound B.

Embodiment approach

[0025] According to the preparation method of the present invention, the compound A that meets the aforementioned requirements can achieve the purpose of the present invention. According to a preferred embodiment of the present invention, the compound A is 4,4'-diaminodiphenyl ether, phenoxy One or more of phenylaniline, 3,4'-diaminodiphenyl ether and 3,3',4,4'-tetraaminodiphenyl ether, preferably the compound A is 4,4'-diamino One or more of diphenyl ether, 3,4'-diaminodiphenyl ether, 3,3',4,4'-tetraaminodiphenyl ether, more preferably the compound A is 4,4'- Diaminodiphenyl ether.

[0026] According to the preparation method of the present invention, the compound B that meets the aforementioned requirements can achieve the purpose of the present invention. According to a preferred embodiment of the present invention, the compound B is alkyldiamine, alkylenediamine, alkylene One or more of base triamine, alkylene tetramine, alkylene pentamine and aryl diamine; more preferabl...

Embodiment 1

[0046] Weigh 99 parts of maleic anhydride grafted polypropylene, 0.5 part of 4,4'-diaminodiphenyl ether, and 0.5 part of 1,12-diaminododecane, and mix well. The fully mixed raw materials are fed into the HAAKE twin-screw extruder. The heating section of the twin-screw extruder has 10 sections in total, the temperature of the first section is set at 160°C, and the temperature of the other sections is set at 190°C. Extruder speed 50r / min, feeding speed 3%. Extrude and granulate, and dry the obtained product at 90° C. for 30 minutes to obtain amine-modified polypropylene.

[0047] The resulting product was pressed into a film at a temperature of 200° C. and a pressure of 100 bar. The infrared spectrum analysis of the sample film was carried out by Shimadzu IRPresidge-21 Fourier transform infrared spectrometer. Infrared spectrum picture as figure 1 As shown, in the infrared spectrum, 1708cm -1 The imide characteristic peak generated by the reaction of maleic anhydride group ...

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Abstract

The invention relates to the field of polymers, and particularly provides a polymer melt strength modifier and a preparation method and application thereof. The preparation method comprises the following steps: performing a contact reaction on polar monomer grafted polypropylene and an amine-containing substance, performing extrusion granulation, and then drying, wherein a polar monomer can chemically react with the amine-containing substance, the amine-containing substance comprises a compound A and a compound B, the compound A is an organic substance containing amido groups, ether bonds andaryl groups, and the compound B is polyamine. The invention provides a polypropylene composition and a polypropylene material and a preparation method thereof. The polymer melt strength modifier can achieve improvement on the melt strength of polymers such as polypropylene according to a relatively small addition amount by a physical blending method.

Description

technical field [0001] The invention relates to a preparation method of a polymer melt strength modifier, a polymer melt strength modifier prepared by the method of the invention and its application, a polypropylene composition and a polypropylene composition. A method for the preparation of a propylene material and a polypropylene material obtained by the method. Background technique [0002] Most of the polypropylenes currently on the market are semi-crystalline linear polymers. Due to its soft long-chain macromolecular structure and high crystallization tendency, its softening point is very close to its melting point, and its melt viscosity drops rapidly after reaching the melting crystallization temperature, and a large amount of crystallization heat is released during the crystallization process, making it Melt viscosity and melt strength further decreased. Therefore, ordinary polypropylene melt has low strength, poor toughness, poor sag resistance, poor thermoformabi...

Claims

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Application Information

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IPC IPC(8): C08F255/02C08F8/32C08L23/12C08L51/06
CPCC08F8/32C08L23/12C08F255/02C08L51/06
Inventor 于芳马伊梁文斌张寅灵刘国刚常贺飞
Owner CHNA ENERGY INVESTMENT CORP LTD
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