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Silicon dioxide nano rod enhanced and toughed polyester compound material and preparation method thereof

A polyester composite material, strengthening and toughening technology, which is applied in the field of polymer materials, can solve the problem of not finding silica nanorods reinforced and toughened polyester composite materials, etc., achieves improved mechanical properties, improved impact performance, and avoids agglomeration. Effect

Inactive Publication Date: 2010-07-07
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, there has been no report on the preparation of silica nanorod-reinforced toughened polyester composites by double in situ polymerization

Method used

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  • Silicon dioxide nano rod enhanced and toughed polyester compound material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0031] Add 41.1g methyl orthosilicate and 10mL deionized water into the beaker, and stir vigorously for 5 minutes, 88mL ethanol and 1mL 0.2mol·L -1 Dilute hydrochloric acid was added into the beaker together, ultrasonicated for 30 minutes, and placed in an environment of 50° C. for 10 minutes to obtain an inorganic filler precursor (sol). Stand still and set aside.

[0032] 776.8g of dimethyl 1,2-phthalate, 541.2mL of ethylene glycol, catalyst zinc acetate, and tetrabutyl titanate (each 300ppm) were added to the polymerization kettle. (Note: this polymerization kettle is equipped with stirring device, nitrogen input device and fractionation device). The temperature was raised to 190°C, and the reaction was carried out for 4 hours until methanol no longer distilled off. Add 8 g of the above-mentioned sol and antioxidant (168) to the system, slowly raise the temperature to 230° C., lower the pressure to 0.01 MPa, and react for 1 hour. Subsequently, the temperature of the syst...

Embodiment 2

[0034] Add 56.3g tetraethyl orthosilicate and 12mL deionized water into the beaker, and stir vigorously for 5 minutes, 100mL acetone and 2mL 0.2mol·L -1 Dilute hydrochloric acid was then added to the beaker, ultrasonicated for 40 minutes, and placed in an environment of 78° C. for 10 minutes to obtain an inorganic filler precursor (sol). Stand still and set aside.

[0035] 1425.6g of dimethyl 2,6-naphthalene dicarboxylate, 994.8mL of propylene glycol, catalyst calcium acetate, and tetrabutyl titanate (500ppm each) were added to the polymerization kettle. (Note: this polymerization kettle is equipped with stirring device, nitrogen input device and fractionation device). The temperature was raised to 160° C., and the reaction was carried out for 6 hours until methanol no longer distilled off. Add the above-mentioned sol and 9 g of anti-aging agent into the system, slowly raise the temperature to 220° C., lower the pressure to 0.02 MPa, and react for 1 hour. Subsequently, the ...

Embodiment 3

[0037] Add 71.4g propyl orthosilicate and 10mL deionized water into the beaker, and stir vigorously for 5 minutes, then add 180mL acetone and 2mL formic acid into the beaker together, ultrasonicate for 52 minutes, and place in an environment of 98°C for 10 minutes to obtain Inorganic filler precursor (sol). Stand still and set aside.

[0038]776.8g of dimethyl 1,3-phthalate, 785.4mL of butanediol and catalyst cobalt acetate, tetrabutyl titanate (each 300ppm) were added into the polymerization kettle. (Note: this polymerization kettle is equipped with stirring device, nitrogen input device and fractionation device). The temperature was raised to 200°C, and the reaction was carried out for 5.5 hours until no methanol distilled out. Add the above-mentioned sol and 9 g of light stabilizer to the system, slowly raise the temperature to 210° C., lower the pressure to 0.03 MPa, and react for 1 hour. Subsequently, the temperature of the system was raised to 240° C., the pressure wa...

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Abstract

The invention relates to a silicon dioxide nano rod enhanced and toughed polyester compound material and a preparation method thereof. The compound material mainly consists of aromatic dioctyl phthalate dimethyl, alpha, omega-diol and inorganic filler presoma, and rod-like silica in the compound material is formed by collosol in a polymerization system by sol-gel transformation. The nano rod is generated in site, thereby avoiding the large-scale agglomeration phenomenon caused in the addition process. Observed by a field-emission scanning electron microscope, the nano rod is regularly dispersed in a matrix. Compared with pure polyester, the mechanical property of the composite material is greatly improved, 1 percent of nano rod by weight can improve the tensile property by 80 percent and improve the impact performance by 50 percent. The composite material can be used as a high-polymer composite, and high-polymer matrix can be removed by a high-temperature erosion method to extract silicon dioxide nano rod, wherein the extracted silicon dioxide nano rod can be applied in the field of semiconductor devices.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and relates to a method for preparing silica nanorod-reinforced and toughened polyester composite materials by double in-situ polymerization. Background technique [0002] With the rapid development of modern science and technology, people pay more attention to the size and shape of particles. One-dimensional nanorods, nanowires and nanotubes are different from nanopowders, not only have special properties such as small size effect, quantum effect, surface effect and macroscopic quantum tunneling effect, but also have new quantum coupling effects and Synergistic effect, etc., so it often shows better mechanical properties, electrical properties, magnetic properties and optical properties than nano-powders. And this kind of structural system is easy to control its properties through external fields (electricity, light, magnetism and other conditions), which provides the possibility for ...

Claims

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Application Information

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IPC IPC(8): C08G63/181C08G63/80C08L67/02C08K7/00
Inventor 姚晨光杨桂生
Owner HEFEI GENIUS NEW MATERIALS
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