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Reactive monomer modified nano calcium carbonate/polypropylene master batch and its preparing method

A reactive monomer, nano calcium carbonate technology, applied in the field of polymer materials, can solve the problems of short chain segments, poor thermal stability, weak macromolecular chain interaction, etc.

Inactive Publication Date: 2004-01-28
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the short organic chain segment of the organic coupling agent, the interaction with the macromolecular chain of the polypropylene matrix is ​​weak
Secondly, the organic coupling agent has the problem of poor thermal stability during material processing
Therefore, there is a limit to the improvement of the mechanical properties of calcium carbonate / polypropylene composites treated with organic low molecular coupling agents.

Method used

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Examples

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Embodiment Construction

[0028] The present invention will be further described below by specific examples.

[0029] The composition ratio and physical and mechanical properties of each embodiment of the present invention are shown in Table 1 and Table 2. Among them, Examples 1-5 are the mechanical properties of nano-calcium carbonate / polypropylene prepared without adding reactive monomer masterbatch, and the reactive monomer used in Examples 6-17 is acrylic acid. The stabilizer used in each embodiment is polypropylene universal antioxidant 1010.

[0030] The preparation method of each embodiment is as follows:

[0031] 1) Mixing: Add the raw materials of each component into the high-speed mixer according to the ratio mentioned above, and mix at room temperature for 1 minute at high speed;

[0032] 2) Melt and extrude the above-mentioned mixture with a twin-screw extruder at 190-220°C, with a rotation speed of 300-350rpm;

[0033] 3) The extruded product is cooled with water and pelletized to obtai...

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Abstract

The present invention relates to a reactive monomer modified nano calcium carbonate / polypropylene mother material and its production method. Said mother material is formed from polypropylene base body, nano calcium carbonate filling material, reactive monomer (including maleic anhydride, acrylic acid and its esters and styrene) and universal stabilizing agent D of PP material. Its preparation method includes the steps of uniformly mixing by using high-speed mixing machine and extruding by means of twin screw extruder machine. Said invention can raise the mechanical property of nano calcium carbonate filled polypropylene material.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a reactive monomer modified nanometer calcium carbonate / polypropylene masterbatch and a manufacturing method thereof. Background technique [0002] Transforming traditional polymer materials with nanotechnology and materials is a hot research topic at home and abroad. Nano-calcium carbonate is currently the nano-material with the largest output and the lowest price. Micron-sized calcium carbonate is widely used in polypropylene. Due to the poor compatibility between calcium carbonate and polypropylene, the addition of high dosage of calcium carbonate usually reduces the mechanical properties of polypropylene materials. The nano-calcium carbonate will produce more interfaces in polypropylene. If the nano-calcium carbonate can be fully dispersed and the interfacial interaction is strengthened, the nano-calcium carbonate will lead to further improvement of the...

Claims

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Application Information

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IPC IPC(8): C08K3/26C08L23/12
Inventor 麦堪成林志丹黄珍珍曾汉民
Owner SUN YAT SEN UNIV
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