Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Light degradable TiO2- polystyrene composite plastic preparation method

A technology of polystyrene and composite plastics, applied in the field of polymer-nanocomposite materials, can solve the problems of low rate of return and high cost, and achieve the effects of low cost, reduced influence of white pollution, and simple process

Inactive Publication Date: 2005-01-26
WUHAN UNIV
View PDF0 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the main ways to deal with these wastes are deep burial, incineration, recycling and reprocessing, etc. In fact, these methods either bring new environmental problems while disposing of waste, or they are caused by high cost and low rate of return. daunting

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1: Carry out surface treatment to nano-titanium dioxide powder with silane coupling agent (brand name of Wuhan University Silicone Materials Co., Ltd.: WD-20), silane coupling agent can be dissolved in acetone and be made into 1wt% solution, then mix with particle The anatase titanium dioxide powder with a diameter of 25nm is mixed evenly, heated to 80°C, and kept at a constant temperature for 1 hour. The weight of the silane coupling agent is TiO 2 3% by weight. The surface-treated TiO 2 By TiO 2 : Styrene is added in the ratio of 2wt% with 10% NaOH to remove inhibitor, the styrene monomer of underpressure distillation (as 50 gram styrenes add 1 gram through surface-treated TiO 2 ) Ultrasonic oscillation and dispersion for 20min, adding initiator azobisisobutyronitrile (recrystallized with methanol before use, the amount of initiator is 0.5% of the amount of styrene) and fully polymerized at 95°C for 20h to obtain photodegradable nano-TiO 2 - Polystyrene ...

Embodiment 2

[0022] Embodiment 2: use titanate coupling agent (Nanjing Shuguang Chemical Plant NDZ-201) to carry out surface treatment to nano-titanium dioxide powder, titanate coupling agent can be dissolved in ethanol, be made into 3% solution, then mix with The anatase titanium dioxide powder with a particle size of 180nm is mixed evenly, heated to 90°C, and kept at a constant temperature for 1 hour. The weight of the titanate coupling agent is TiO 2 1% by weight. The surface-treated TiO 2 By TiO 2 : Styrene is that the ratio of 1wt% is added in the styrene monomer (as 50 gram styrene adds 0.5 gram modified TiO 2 ), ultrasonic vibration and dispersion for 20min, adding the initiator azobisisobutyronitrile (recrystallized with methanol before use, the amount of initiator is 0.2wt% of the amount of styrene), fully polymerized at 95°C for 20h to obtain photodegradable nano-TiO 2 - Polystyrene composite plastic. Among them, the weight average molecular weight of polystyrene is 44×10 4 ...

Embodiment 3

[0023] Embodiment 3: use aluminum titanate composite coupling agent (Shanxi Provincial Institute of Chemical Industry OL-AT1618) to carry out surface treatment to nano-titanium dioxide powder, aluminum titanate coupling agent can be dissolved in organic solvents such as ethanol or acetone, Prepare a 2wt% solution, then mix evenly with part of the anatase part of the rutile titanium dioxide powder with a particle size of 80nm, heat to 90 ° C, keep the temperature for 1 hour, and the weight of the aluminum titanate coupling agent is TiO 2 2% by weight. The surface-treated TiO 2 By TiO 2 : Styrene is added in the ratio of 3wt% with 10% NaOH de-inhibitor, the styrene monomer of underpressure distillation, ultrasonic oscillation disperses 20min, adds initiator azobisisobutyronitrile (recrystallized with methanol before use, The amount of initiator is 0.3% of the amount of styrene) and fully polymerized at 95°C for 20h to obtain photodegradable nano-TiO 2 - Polystyrene composite ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Particle sizeaaaaaaaaaa
Particle sizeaaaaaaaaaa
Particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention relates to a light degradable TiO2- polystyrene composite plastic preparation method which consists of, carrying out nano TiO2 surface modifying, charging 0.5-5 wt% of modified nanometer TiO2 into styrene monomer, employing home position polymerization method to produce the light degradable TiO2- polystyrene composite plastic.

Description

technical field [0001] The invention relates to a photodegradable nano TiO 2 - Polystyrene composite plastics, in particular to a method for preparing highly efficient photodegradable plastics, belonging to the field of polymer-nanometer composite materials. Background technique [0002] Polystyrene has a wide range of uses as a conventional plastic, especially disposable products (white foam) of expanded polystyrene are used in the packaging industry to protect various fragile and electronic products, and the amount is huge. Due to the stable structure of polystyrene, it is difficult to degrade under natural conditions, especially white foam, which is light in weight and large in size, and it will not degrade for 100 years even if it is buried in the soil. More and more waste polymer materials—white pollution has brought great pressure to our ecological environment, how to deal with "white waste" is a very urgent problem. At present, the main methods to deal with these wa...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C08F112/08C08K3/22C08L25/08C09C3/00
Inventor 昝菱刘忠士田丽红
Owner WUHAN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com