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

White graphene modified polybutylene terephthalate composite material and preparation method thereof

A technology of polybutylene terephthalate and white graphene, which is applied in the field of white graphene modified polybutylene terephthalate composite materials and its preparation, can solve the problem of large amount of addition and poor thermal stability , a large number of problems, etc., to meet the needs of industrial applications and easy operation

Inactive Publication Date: 2018-09-25
GUANGDONG NANOLUTION SCI & TECH CO LTD
View PDF9 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, halogenated flame retardants have obvious flame retardant effects, wide application range, and low price, but they will produce a lot of smoke and toxic gases during the combustion process, which affects health and does not meet environmental protection requirements; the addition of inorganic flame retardants is relatively large (generally more than 50%), which will easily lead to a decrease in the physical properties and processing properties of the material; although organophosphorus-nitrogen flame retardants are halogen-free and low-toxic, they still have a large amount of addition and poor thermal stability. Poor dispersibility, surface treatment or synergistic flame retardant is required to achieve good flame retardant effect

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • White graphene modified polybutylene terephthalate composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0050] In addition, the preparation method of the white graphene modified by the polymer comprises the following steps:

[0051] (1) in parts by weight, white graphene is placed in a solvent for ultrasonic dispersion, and then a stabilizer is added for processing to obtain a lipophilic modified white graphene dispersion;

[0052] (2) Mix the lipophilic modified white graphene dispersion with polymerized monomers and initiators evenly, and react at 60°C-100°C for 0.5-3h, then add a neutralizer to adjust the pH to 7-8, cooling, filtering and drying to obtain the polymer-modified white graphene.

[0053] The above method first puts the white graphene in the dispersion liquid for ultrasonic dispersion; after ultrasonication, a stabilizer is added to modify the surface of the white graphene to improve its surface activity, and then it is mixed with the polymerized monomer under the action of the initiator. Polymerization occurs to form a coating on the surface of the white graphen...

Embodiment 1

[0068] Step 1) Preparation of the white graphene modified by polymer: get 0.5 part of white graphene powder and join in the round bottom flask, and add 100 parts of distilled water in the round bottom flask, then ultrasonic dispersion, add 0.1 part in the round bottom flask Parts of sodium lauryl sulfate, ultrasonically stirred at high speed to obtain a lipophilic modified white graphene dispersion; after heating the lipophilic modified white graphene dispersion to 60°C, add 0.5 parts of initiator ammonium persulfate, and stir After 10 minutes, 0.05 parts of methyl methacrylate was added dropwise, and the drops were completed after 0.5 hours. After the dropwise addition, keep warm for 0.5h until the reaction is complete. After the reaction is completed, adjust the pH value to 7 with ammonia water, quickly cool to room temperature, filter under reduced pressure, wash the filter cake with distilled water for 3 to 4 times, then wash with alcohol once, and vacuum dry and grind at ...

Embodiment 2

[0073] Step 1) Preparation of high polymer modified white graphene: get 1 part of white graphene powder and add it to a round bottom flask, and add 100 parts of ethanol to the round bottom flask, then ultrasonically disperse, add 0.2 parts to the round bottom flask One part of sodium lauryl sulfate, ultrasonically stirred at high speed to obtain a lipophilic modified white graphene dispersion; after heating the lipophilic modified white graphene dispersion to 90°C, add 1 part of initiator ammonium persulfate, and stir After 15 minutes, 0.5 parts of methyl acrylate were added dropwise, and the drops were completed after 0.6 hours. After the dropwise addition, keep warm for 1 h until the reaction is complete. After the reaction is completed, adjust the pH value to 7 with ammonia water, quickly cool to room temperature, filter under reduced pressure, wash the filter cake with distilled water for 3 to 4 times, then wash with alcohol once, and vacuum dry and grind at 70°C to obtain...

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 diameteraaaaaaaaaa
specific surface areaaaaaaaaaaa
Login to View More

Abstract

The invention discloses a white graphene modified polybutylene terephthalate composite material and a preparation method thereof. The modified composite material is mainly prepared from, by weight, 0.5-6 parts of high polymer modified white graphene, 75-88.5 parts of polybutylene terephthalate, 10-15 parts of a phosphorus-nitrogen flame retardant, 0.5-2 parts of an antioxidant and 0.5-2 parts of adispersing agent. The white graphene modified polybutylene terephthalate composite material has advantages of environmental friendliness and high flame resistance.

Description

technical field [0001] The invention relates to the technical field of polymer material modification, in particular to a white graphene-modified polybutylene terephthalate composite material and a preparation method thereof. Background technique [0002] Polybutylene terephthalate (PBT) has the characteristics of excellent mechanical properties, electrical properties, chemical corrosion resistance, easy molding and low moisture absorption rate. It is a thermoplastic engineering plastic with excellent comprehensive properties and is widely used in Electronics, electrical appliances and automobiles and other fields. However, pure PBT has poor flame retardancy (only up to UL-94HB level), thus limiting its application range. [0003] In order to improve the flame retardancy of PTB, it is usually necessary to add an appropriate amount of flame retardants for flame retardant modification. Traditional flame retardants mainly include halogenated flame retardants, organophosphorus-n...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L23/06C08L23/08C08L83/04C08K9/10C08K9/04C08K3/38C08K5/3492C08K5/5399
CPCC08K2003/385C08L67/02C08L2201/02C08L2201/22C08L23/06C08K9/10C08K9/08C08K3/38C08K5/34928C08L23/0853C08K5/5399C08L83/04
Inventor 段曦东赵涛楠王剑
Owner GUANGDONG NANOLUTION SCI & TECH CO LTD
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