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Amide beta crystal form nucleating agent and application thereof

A technology of β crystal form and nucleating agent, which is applied in the field of functional additives, can solve the problems of unknown structure and nucleation mechanism, low nucleation efficiency, large addition amount, etc., and achieve excellent β crystal form nucleation performance and preparation process Simple, low-cost-to-produce effect

Active Publication Date: 2022-07-22
SOUTH CHINA UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the reported β-crystal nucleating agents that can be used for polypropylene all have obvious defects, and it is difficult to meet the actual application requirements, as follows:
[0005] 1) Inorganic substances: low nucleation efficiency, easy deliquescence, poor compatibility with polypropylene, and large amount of addition, easy to agglomerate and cause a decline in the performance of polypropylene materials;
[0006] 2) Organic substances: a) Fused ring aromatic hydrocarbons: the structure usually contains fused rings composed of multiple benzene rings. This fused ring structure usually has the ability to dye, and when applied to polypropylene materials, the product will be colored, which belongs to Dye nucleating agent; b) organic carboxylic acid and its salts: relatively high nucleation efficiency, and good compatibility with polypropylene, but large-scale production is difficult and difficult to promote and apply on a large scale; c) amide Classes: including aliphatic amides and aromatic amides, and aromatic amides are more researched and widely used, which have better nucleation performance, good compatibility with polypropylene, and will not resemble condensed rings. Aromatics bring color problems and other advantages, and the production cost is low, but the stability of the nucleation efficiency is poor, and the nucleation efficiency is greatly affected by the process conditions;
[0007] 3) Rare earths: including metal oxides corresponding to rare earth elements and some stearates, there are problems such as unknown structure and nucleation mechanism, high preparation cost, etc., and the application is greatly restricted

Method used

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  • Amide beta crystal form nucleating agent and application thereof
  • Amide beta crystal form nucleating agent and application thereof
  • Amide beta crystal form nucleating agent and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A kind of amide beta crystal nucleating agent, its preparation method comprises the following steps:

[0038] Disperse 0.1 mol of hexahydrophthalic anhydride in 300 mL of tetrahydrofuran at a temperature of 60 °C, add a total of 0.11 mol of aniline in stages, react at 60 °C for 6 h, spin dry with a rotary evaporator, and place it in a vacuum drying oven Bake at 60°C for 12h to obtain amide β crystal nucleating agent (denoted as GC-1).

[0039] The H NMR spectrum of GC-1 is as follows figure 1 shown.

[0040] Depend on figure 1 It can be seen that the structural formula of GC-1 is

Embodiment 2

[0042] A kind of amide beta crystal nucleating agent, its preparation method comprises the following steps:

[0043] Disperse 15mmol of GC-1 (prepared in Example 1) in 50mL of water with a temperature of 60°C, add saturated sodium bicarbonate solution dropwise to pH 7 of the reaction solution, and then dropwise add 20mL of 0.25mol / L at a uniform rate. The lanthanum nitrate solution was added and reacted at 60°C for 12h, filtered, and the filtered solid was washed with water for 3 times, and then placed in a vacuum drying oven at 100°C for 12h to obtain the amide β crystal nucleating agent (denoted as GC-2 ).

Embodiment 3

[0045] A kind of amide beta crystal nucleating agent, its preparation method comprises the following steps:

[0046] Disperse 15mmol of GC-1 (prepared in Example 1) in 50mL of water with a temperature of 60°C, add saturated sodium bicarbonate solution dropwise to pH 7 of the reaction solution, and then dropwise add 20mL of 0.375mol / L at a uniform rate. After adding zinc nitrate solution, react at 60°C for 12h, filter, wash the filtered solid with water for 3 times, and then place it in a vacuum drying oven at 100°C for 12h to obtain amide β crystal nucleating agent (denoted as GC-3 ).

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Abstract

The invention discloses an amide beta crystal form nucleating agent and application thereof. The amide beta crystal form nucleating agent comprises at least one of aromatic amide and aromatic amide salt, the aromatic amide is obtained by carrying out amidation reaction on at least one of aniline, o-phenylenediamine, m-phenylenediamine and p-phenylenediamine and hexahydrophthalic anhydride, and the aromatic amide salt is obtained by salifying aromatic amide and metal inorganic salt. The amide beta crystal form nucleating agent has excellent beta crystal form nucleating performance when being used for homo-polypropylene and random copolymer polypropylene, and is simple in preparation process, low in production cost, wide in application range and suitable for large-scale industrial application.

Description

technical field [0001] The invention relates to the technical field of functional additives, in particular to an amide beta crystal nucleating agent and its application. Background technique [0002] Polypropylene material is a polymer material with a wide range of applications. It has excellent processing and electrical properties, and is relatively cheap. It is used in the automotive industry, electronics industry, home appliances, furniture, building materials and other fields. Polypropylene materials can be formed by injection molding, extrusion and thermoforming, but because the crystal form of polypropylene under normal processing conditions is mainly α crystal form, and the crystal size of α crystal form polypropylene is large, there are The disadvantages of poor mechanical properties such as impact resistance, poor heat resistance, and poor aging resistance greatly limit the application of α-crystalline polypropylene materials. [0003] Polypropylene has 5 crystal f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K5/20C08L23/12C08L23/14C07C233/58C07C233/62C07C231/02
CPCC08K5/20C07C233/58C07C233/62C08L2205/242C07C2601/14C08L23/12C08L23/14Y02P20/52
Inventor 江焕峰周杨任颜卫许文杰郑德陈俊吴波
Owner SOUTH CHINA UNIV OF TECH