Two-dimensional ultrathin titania-modified polyester nano composite brush bristles and preparation method thereof

A modified polyester and nanocomposite technology, applied in the direction of single-component polyester rayon, rayon manufacturing, fiber chemical characteristics, etc., can solve the difficulty of high-performance materials, cost money and energy, and limit polyester products. Scope of application, etc.

Active Publication Date: 2019-06-04
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

Polyester has excellent mechanical properties, chemical corrosion resistance and good flow properties, but polyester is a crystalline engineering plastic, its molding shrinkage ratio is relatively large, and its dimensional stability is poor, which is easy to cause product fins during the molding process. The curvature is too large, which limits the application range of polyester products
In addition, it is difficult to develop a new high-performance material, and the research and development cycle is relatively long, which consumes a lot of money and energy

Method used

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  • Two-dimensional ultrathin titania-modified polyester nano composite brush bristles and preparation method thereof
  • Two-dimensional ultrathin titania-modified polyester nano composite brush bristles and preparation method thereof
  • Two-dimensional ultrathin titania-modified polyester nano composite brush bristles and preparation method thereof

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preparation example Construction

[0037] The present invention also provides a method for preparing a two-dimensional ultra-thin titanium dioxide modified polyester nanocomposite brush filament, comprising:

[0038] Step 1: Preparation of two-dimensional ultrathin nano-TiO 2

[0039] 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;

[0040] Step 2: Modified two-dimensional ultrathin nano-TiO 2

[0041] Surfactant and two-dimensional ultrathin nano-TiO 2 reaction to obtain modified t...

Embodiment 1

[0048] 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 .

[0049] 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 addition of the surfactant is two-dimensional ultra-thin nano-TiO 2 5% of the mass; modified two-dimensional ultra-thin nano-TiO 2 -M (thickness 20nm, aspect ratio 15).

[0050] PBT material and modified two-dimensional ultrathin nanosheet TiO 2 -M drying, the drying temperature is 110 ° C, and the drying time is 6 hours, which can improve the spinnability of the fiber; then the PBT materi...

Embodiment 2

[0054] 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 .

[0055] 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 addition of the surfactant is two-dimensional ultra-thin nano-TiO 2 5% of the mass; modified two-dimensional ultra-thin nano-TiO 2 -M (thickness 20nm, aspect ratio 15).

[0056] PBT material and modified two-dimensional ultrathin nano-TiO 2 -M drying, the drying temperature is 110 ° C, and the drying time is 6 hours, which can improve the spinnability of the fiber; then the PBT material in...

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Abstract

The invention provides two-dimensional ultrathin titania-modified polyester nano composite brush bristles and a preparation method thereof and belongs to the technical field of high molecular materials. The composite brush bristles herein are made from, by weight, 60-96 parts of a polyester, 0.1-20 parts of modified two-dimensional ultrathin nano TiO2, 0.5-2 pars of an antioxidant, and 0.5-8 partsof a lubricant; the modified two-dimensional ultrathin nano TiO2 is prepared by adding a surfactant into two-dimensional ultrathin nano TiO2 and carrying out surface modification; the modified two-dimensional ultrathin nano TiO2 is less than 50 nm in thickness and greater than 5 in diameter-to-thickness ratio. The invention also provides the preparation method of the two-dimensional ultrathin titania-modified polyester nano composite brush bristles. The two-dimensional ultrathin titania-modified polyester nano composite brush bristles have evidently uneven surface and are similar to wool in performance and structure.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a two-dimensional ultra-thin titanium dioxide modified polyester nanocomposite brush filament and a preparation method thereof. Background technique [0002] Engineering plastics are widely used in the fields of electrical appliances and electronics, automotive interiors, building decoration, and aerospace manufacturing. At present, China has become the country with the fastest-growing demand for engineering plastics. Although the industrialization of polyester is late in the field of polymers, due to its excellent performance, it is the fastest growing among the five major engineering plastics. Polyester has excellent mechanical properties, chemical corrosion resistance and good flow properties, but polyester is a crystalline engineering plastic, its molding shrinkage ratio is relatively large, and its dimensional stability is poor, which is easy to cause p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/92D01F1/10
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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