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High barrier property two-dimensional ultrathin titanium dioxide modified PE nano composite film material and preparation method thereof

A high-barrier, nano-composite technology, applied in the field of polymer materials, can solve the problems of poor barrier properties of inorganic nano-modified materials

Active Publication Date: 2019-05-17
芜湖万隆新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of poor barrier performance of existing inorganic nano-modified materials, and to provide a high-barrier two-dimensional ultra-thin nano-titanium dioxide modified PE nanocomposite film material and its preparation method

Method used

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preparation example Construction

[0032] The present invention also provides a method for preparing a high-barrier two-dimensional ultra-thin nano-titanium dioxide modified PE nanocomposite film material, the method comprising:

[0033] Step 1: Preparation of two-dimensional ultrathin nano-TiO 2

[0034] Under the protection of nitrogen, add titanium tetrachloride to ethylene glycol, heat to reflux, and then add water to react. After the reaction, cool down to room temperature, centrifuge and wash to obtain two-dimensional ultra-thin nano-TiO 2 ; The reaction time is preferably 30min-5h; more preferably 2-4h, the volume ratio of ethylene glycol and titanium tetrachloride is preferably (5-100): 1, more preferably (5-6) : 1, the volume ratio of titanium tetrachloride to water is preferably (1-4): 1, more preferably (1-1.25): 1; the ethylene glycol is used as a directing agent;

[0035] Step 2: Modified two-dimensional ultrathin nano-TiO 2

[0036] Surfactant and two-dimensional ultrathin nano-TiO 2 reaction...

Embodiment 1

[0043] Under the protection of nitrogen, add 0.5L titanium tetrachloride to 3.0L ethylene glycol, heat to reflux, add 0.5L water to react with titanium tetrachloride, react for 2.0h, cool down to room temperature, and perform centrifugation and washing. Two-dimensional ultrathin nano-TiO 2 .

[0044] two-dimensional ultrathin nano-TiO 2 Reversely disperse in the mixed solution of water and ethanol (the volume ratio of water and ethanol is 9:1), super-disperse for 50min, then add the surfactant hexadecyltrimethoxysilane, react at 70°C for 4h, after cooling, 5000r / Min centrifugation, drying overnight at 100°C, the quality of the surface modifier hexadecyltrimethoxysilane is two-dimensional ultra-thin nano-TiO 2 4% of the modified two-dimensional ultrathin nano-TiO 2 -M (thickness 10 nm, aspect ratio 10).

[0045] PE material and modified two-dimensional ultrathin nano-TiO 2 -M drying, the drying temperature is 100°C, and the drying time is 6 hours; then PE material in parts ...

Embodiment 2

[0049] Under the protection of nitrogen, add 0.5L titanium tetrachloride to 3.0L ethylene glycol, heat to reflux, add 0.5L water to react with titanium tetrachloride, react for 2.0h, cool down to room temperature, and perform centrifugation and washing. Two-dimensional ultrathin nano-TiO 2 .

[0050] two-dimensional ultrathin nano-TiO 2 Reversely disperse in a mixed solution of water and ethanol (the volume ratio of water and ethanol is 9:1), super-disperse for 50min, then add surfactant KH550, react at 70°C for 4h, after cooling, centrifuge at 5000r / min, and dry at 100°C Overnight, the quality of the surface modifier KH550 is two-dimensional ultra-thin nano-TiO 2 4% of the modified two-dimensional ultrathin nano-TiO 2 -M (thickness 10 nm, aspect ratio 10).

[0051] PE material and modified two-dimensional ultrathin nano-TiO 2 -M drying, the drying temperature is 100°C, and the drying time is 6 hours, which can improve the processing performance of the material; PE materi...

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Abstract

The invention provides a high barrier property two-dimensional ultrathin titanium dioxide modified PE nano composite film material and a preparation method thereof, and belongs to the technical fieldof high polymer materials. The material is prepared from the following components in parts by weight: 60-98 parts of polyethylene, 0.5-40 parts of modified two-dimensional ultrathin nano TiO2, 0.5-2 parts of a compatibilizer, 0.5-2 parts of an antioxidant and 0.5-2 parts of alight stabilizer; the modified two-diemensional ultrathin nano TiO2 is obtained after surface modification is conducted by adding two-dimensional ultrathin TiO2 into a surfactant; the thickness of the modified two-dimensional ultrathin nano TiO2 is less than 20nm, and the diameter thickness ratio is larger than 5. The invention further provides a preparation method of the high barrier property two-dimensional ultrathin nano titanium dioxide modified PE nano composite film material. The PE waterproofness and the oxygenbarrier property of the composite material are remarkably improved, and the application range of the PE material is greatly widened.

Description

technical field [0001] The invention belongs to the field of polymer materials, and provides a high-barrier two-dimensional ultra-thin nano-titanium dioxide modified PE nano-composite film material and a preparation method thereof. Background technique [0002] Polyethylene (PE) occupies an important position in the production of synthetic resins and has developed rapidly at home and abroad. However, people have increasingly extensive and demanding requirements on material properties, and single-component materials are difficult to meet the needs of society. The traditional polymer reinforcement and toughening modification method is to blend or copolymerize polymers with rubber, thermoplastics, thermosetting resins, etc., but they often sacrifice the precious strength, stiffness, dimensional stability, heat resistance and reliability of materials. at the expense of processability. In recent years, the inorganic rigid particle toughened polymers developed in recent years can...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08K9/06C08K7/00C08K3/22C08K5/134C08K13/06C08J5/18
Inventor 周光远李璐姜国伟
Owner 芜湖万隆新材料有限公司
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