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Toughening-modified PA-PP mixed resin material and preparation method thereof

A PA-PP, mixed resin technology, applied in the polymer field, can solve problems such as poor alloy performance, and achieve the effects of improving junction toughness, improving compatibility, and improving grafting rate

Inactive Publication Date: 2019-08-02
合肥市丽红塑胶材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, PP is a non-polar polymer, and PA is a polar polymer. The polarity of the two is very different, and the performance of the alloy obtained by direct blending is poor.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A toughened modified PA-PP mixed resin material, the preparation method is as follows:

[0021] (1) Preparation of rare earth coupling agent-modified montmorillonite: put montmorillonite in an oven at 120°C for 8 hours, cool to room temperature and grind through a 200-300 mesh sieve, place it in a high-speed mixer, and control the speed Stir at 800r / min for 20min, wait for the temperature to rise to 85°C, keep the temperature constant, add the rare earth coupling agent in small amounts for several times, the time interval between each addition is 10min, keep stirring at a high speed during the addition process, and continue to stir for 15 minutes after the addition is completed. Cool down to room temperature, discharge;

[0022] The usage amount of the rare earth coupling agent is 2.5%.

[0023] (2) According to the mass ratio of montmorillonite / DCP of 10:1, take an appropriate amount of DCP and dissolve it in acetone, and add the DCP acetone solution and the rare eart...

Embodiment 2

[0028] A toughened modified PA-PP mixed resin material, the preparation method is as follows:

[0029] (1) Preparation of rare earth coupling agent-modified montmorillonite: put montmorillonite in an oven at 120°C for 8 hours, cool to room temperature and grind through a 200-300 mesh sieve, place it in a high-speed mixer, and control the speed Stir at 800r / min for 20min, wait for the temperature to rise to 85°C, keep the temperature constant, add the rare earth coupling agent in small amounts for several times, the time interval between each addition is 10min, keep stirring at a high speed during the addition process, and continue to stir for 15 minutes after the addition is completed. Cool down to room temperature, discharge;

[0030] The usage amount of the rare earth coupling agent is 2.5%.

[0031] (2) According to the mass ratio of montmorillonite / DCP of 10:1, take an appropriate amount of DCP and dissolve it in acetone, and add the DCP acetone solution and the rare eart...

Embodiment 3

[0036] Raw material component is identical with embodiment 1, and the difference with embodiment 1 is, in the grafting reaction of step (2) polypropylene and maleic anhydride in embodiment 3, do not add modified montmorillonite, but Add directly into the step (4) to prepare the modified PA-PP material.

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PUM

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Abstract

The invention discloses a toughening-modified PA-PP mixed resin material and a preparation method thereof. The preparation method comprises the following steps: performing modification treatment on the surface of montmorillonite with a rare earth coupling agent, then introducing modified montmorillonite into polypropylene melt grafted maleic anhydride by adopting a melt grafting method, and finally adding the maleic anhydride grafted polypropylene / modified montmorillonite masterbatch and the rare earth modified montmorillonite into a melt blending system of polypropylene and nylon to obtain the mixed resin material. The montmorillonite modified by the rare earth coupling agent has the functions of inducing beta-crystal heterogeneous nucleation, effectively promoting the transformation of acrystal form in a PP matrix, and facilitating the improvement on the knot toughness of a composite material; by introducing the modified montmorillonite into the grafting reaction of polypropylene with maleic anhydride, the improvement on the grafting rate is facilitated, the compatibility of polypropylene and nylon is enhanced, and effective compatibilization is achieved.

Description

technical field [0001] The invention relates to the technical field of polymers, in particular to a toughened and modified PA-PP mixed resin material and a preparation method thereof. Background technique [0002] Polypropylene (PP) resin has the characteristics of good processability, good chemical resistance, and excellent water absorption resistance, but at the same time has disadvantages such as low room temperature notched impact strength, poor heat resistance, and poor dimensional stability, which limits its application range. As an important engineering plastic, nylon (PA) has excellent mechanical properties, heat resistance, wear resistance and high hardness, but PA6 has a low heat distortion temperature, is easy to absorb moisture, and has poor dimensional stability, which limits the use of PA6. further application. The main purpose of the research on the PP / PA alloy system is to achieve mutual modification through the blending of PA and PP, and learn from each oth...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L77/00C08L51/06C08K9/00C08K3/34C08K5/14
CPCC08L23/12C08L2205/03C08L2205/08C08L2205/24C08L77/00C08L51/06C08K9/00C08K3/346C08K5/14
Inventor 张振东
Owner 合肥市丽红塑胶材料有限公司
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