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Rare earth-doped titanium dioxide-modified polyvinyl chloride composite material and preparation method thereof

A titanium dioxide and rare earth doping technology, which is applied in the field of polymer composite material preparation, can solve the problems of large difference in surface properties, loss of nanoscale, difficulty in uniform dispersion, etc., to increase interface bonding force, facilitate dispersion, and the preparation method is simple and practical Effect

Active Publication Date: 2019-07-26
宿迁联盛科技股份有限公司
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Problems solved by technology

Due to the high surface energy of nanoscale materials, it is difficult for general processing methods to disperse them evenly in polymer materials, and the surface properties of general inorganic nanofillers are quite different from those of polymers, and inorganic nanofillers are prone to self-distribution during the mixing process. Form large-sized aggregates, making the scale in the material much larger than the nanoscale, losing the effect of the nanoscale

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  • Rare earth-doped titanium dioxide-modified polyvinyl chloride composite material and preparation method thereof

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Embodiment 1

[0040] This embodiment provides a method for preparing a rare earth-doped titanium dioxide-modified polyvinyl chloride composite material, which includes the following steps:

[0041] Preparation of rare earth doped titanium dioxide powder:

[0042] A. Dissolve 10ml of butyl titanate in 10ml of ethanol, stir and disperse evenly to obtain A solution;

[0043] B. Weigh again 0.5g lanthanum oxide and disperse it in 20mL ethanol solution, obtain B solution after fully ultrasonic stirring and filtering;

[0044] C. Ultrasonic stirring, continuously and slowly add 20mL of B solution to A solution at room temperature, and then put it in a dark place to age for 24 hours to obtain a rare earth-doped titanium dioxide sol, wherein the dropping rate is 0.01ml per second;

[0045] D. After drying and molding, place it in a muffle furnace, set the temperature at 300°C for calcination for 4 hours, and get the rare earth doped titanium dioxide powder after physical grinding;

[0046] Prepar...

Embodiment 2

[0057]This embodiment provides a method for preparing a rare earth-doped titanium dioxide-modified polyvinyl chloride composite material, which includes the following steps:

[0058] Preparation of rare earth doped titanium dioxide powder:

[0059] A. Dissolve 10ml of isopropyl titanate in 100ml of ethanol, stir and disperse evenly to obtain A solution;

[0060] B. Take again 27.5g of cerium oxide and disperse it in 1100mL ethanol solution, obtain B solution after fully ultrasonic stirring and filtering;

[0061] C. Stir ultrasonically, continuously and slowly add 1100mL of solution B to solution A at room temperature, and then put it in the dark for 168h to obtain the rare earth-doped titanium dioxide sol, wherein the dropping rate is 1ml per second;

[0062] D. After drying and molding, put it in a muffle furnace, set the temperature at 600 ° C for 1 hour, and physically grind it to get the rare earth doped titanium dioxide powder;

[0063] Preparation of rare earth-doped ...

Embodiment 3

[0074] This embodiment provides a method for preparing a rare earth-doped titanium dioxide-modified polyvinyl chloride composite material, which includes the following steps:

[0075] Preparation of rare earth doped titanium dioxide powder:

[0076] A. Dissolve 20ml of butyl titanate in 50ml of methanol, stir and disperse evenly to obtain A solution;

[0077] B. Take again by weighing 8.75g lanthanum oxide and disperse in 350mL ethanol solution, obtain B solution after fully ultrasonic stirring and filtering;

[0078] C. Ultrasonic stirring, continuously and slowly add 350mL of B solution to A solution at room temperature, and then put it in the dark for 72 hours to obtain the rare earth-doped titanium dioxide sol, wherein the dropping rate is 0.5ml per second;

[0079] D. After drying and molding, put it in a muffle furnace, set the temperature at 400 ° C for 3 hours and calcinate for 3 hours, and then get the rare earth doped titanium dioxide powder after physical grinding;...

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Abstract

The invention belongs to the technical field of polymer composite material preparation, in particular to a rare earth-doped titanium dioxide-modified polyvinyl chloride composite material and a preparation method thereof. The composite material consists of rare earth-doped titanium dioxide and polyvinyl chloride, and is prepared by melting and tightly refining master batches obtained by in-situ polymerization and polyvinyl chloride; rare earth elements are doped in the titanium dioxide synthesis process, so that the material has a better effect compared with dispersion of rare earth oxides ina titanium dioxide solution in the later period, meanwhile, the rare earth and titanium dioxide have a synergistic effect, so that the prepared material has more excellent thermal stability and lightstability; and rare earth-doped titanium dioxide is added in the process of in-situ polymerization of polyvinyl chloride can significantly increase the interfacial bonding force between an inorganic filler and a polymer material, and is more conducive to the dispersion of rare earth-doped titanium dioxide in a polyvinyl chloride composite material. The preparation method is simple and practical, and is suitable for large-scale industrial production and application.

Description

technical field [0001] The invention belongs to the technical field of polymer composite material preparation, and in particular relates to a rare earth-doped titanium dioxide-modified polyvinyl chloride composite material and a preparation method thereof. Background technique [0002] As a plastic with excellent processing performance, PVC has been widely used in today's society. However, its heat resistance and aging resistance are poor, and its heat distortion temperature is low, which restricts its application in many fields. At present, the research on the heat and aging resistance of PVC mainly focuses on the methods of adding additives, inorganic rigid particles and crosslinking during the processing. Although the modification of polyvinyl chloride with modifier can significantly increase the Vicat temperature, it is relatively expensive. Compared with polyvinyl chloride itself, the cost of modification is relatively high. PVC cross-linking technology can significan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08K3/22C08J3/22
CPCC08J3/226C08J2427/06C08K2003/221C08K2003/2213C08K2003/2241C08L27/06C08L2205/025C08K3/22
Inventor 戈晴晴张超谢胜利刘旭
Owner 宿迁联盛科技股份有限公司
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