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Preparation process of novel poly propylene carbonate nano-composite

A polymethyl ethylene carbonate and composite material technology, applied in the directions of carbon nanotubes, nanocarbons, carbon compounds, etc., can solve the problems of high elongation at break, poor mechanical properties, etc., and achieve low cost, easy operation, Simple preparation method

Inactive Publication Date: 2012-10-10
XIHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using C0 2 Synthetic and degradable plastics have rich sources of raw materials, low prices, high elongation at break, transparency, and both light and biodegradable functions; however, they have poor mechanical properties and are sensitive to heat

Method used

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  • Preparation process of novel poly propylene carbonate nano-composite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Accurately weigh 10g of natural graphite, and slowly add to it under stirring and cool to 4 o In 230mL of concentrated sulfuric acid (98%) below C, slowly add 5g of sodium nitrate and 28g of potassium permanganate, and stir for 10min. Remove the ice bath, turn the reaction system to 36 o After stirring and reacting in a hot water bath of C for 30min, then in an oil bath at 95 o C under stirring reaction 1h, the product is fully washed with 5% hydrochloric acid and deionized water, at 90 o C dried in a vacuum oven for 24 hours to obtain a graphite oxide carrier.

[0027] Accurately weigh 2g of graphite oxide and add it into a 250mL three-necked bottle containing 100mL of anhydrous DMF, and after passing through nitrogen to remove the air, ultrasonically disperse to obtain a uniform dispersion system. Then move the system to a water bath, add excess isocyanate, at 80 o C under magnetic stirring reaction 24h, then add excess butanediol at 80 o The reaction was carried...

Embodiment 2

[0031] The preparation method and functionalization method of the filler are the same as in Example 1. 0.53 g of functionalized graphite oxide filler is added to excess DMF, and after the same blending as in Example 1, a composite material with a filler content of 1% is obtained. The test conditions of the composite material are the same as in Example 1, and the results are shown in Table 1.

Embodiment 3

[0033] The preparation method and functionalization method of the filler are the same as in Example 1, the filler content is 3%, and the rest of the test conditions are the same as in Example 1. The results are shown in Table 1.

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Abstract

The invention discloses a preparation process of a novel poly propylene carbonate (PPC) nano-composite. The composite is prepared by taking functionalized graphite and carbon nanotubes as packing, taking degradable PPC polymer as a matrix and then fusing or mixing in solution. The preparation process includes steps (1), synthesis and surface treatment of functionalized packing: oxidizing the packing by strong oxidizers and then enabling the packing to react with isocyanate and polyatomic alcohol to obtain the functionalized packing; and (2), preparation of PPC-matrix composite: mixing the functionalized packing with polymer in solution or by means of fusing. By the preparation process, dispersion effect of the packing can be improved, interface bonding strength of the packing and the matrix can be improved, and mechanical and thermal performance of the composition can be improved. The composite prepared by the preparation process is excellent in performance and low-cost and is a full-degradable environment-friendly material, and further, the applicable range of PPC is expanded effectively and good application prospect can be achieved.

Description

technical field [0001] The invention relates to a modified polymethylethylene carbonate material, in particular to a preparation method of a novel polymethylethylene carbonate nanocomposite material. Background technique [0002] At present, environmental protection issues have attracted more and more attention from all over the world, and researchers are exploring how to solve the problem of "white pollution" caused by non-degradable polymer material waste. Filler is one of the important additives of polymer composite materials, and adding filler to polymer matrix is ​​an important means to improve the properties of polymer materials. Fillers can not only reduce the cost of composites, but also improve certain physical or chemical properties of polymer composites. There are many types of fillers, which have different physical and chemical properties due to their different compositions and structures, thus having different filling effects. [0003] In recent years, how to ...

Claims

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Application Information

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IPC IPC(8): C08L69/00C08K9/04C08K7/00C08K3/04C08K7/24C01B31/04C01B32/159C01B32/168C01B32/225C01B32/23
Inventor 卞军魏晓伟蔺海兰龚淑娟
Owner XIHUA UNIV
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