Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of preparation method of modified graphene antistatic agent

A technology of antistatic agent and graphene, which is applied in the field of preparation of modified graphene antistatic agent, can solve problems such as explosion, fire, and static charge accumulation on the surface of products, and achieve the effect of reducing impact and reducing the amount of addition

Active Publication Date: 2019-07-19
HEFEI GENIUS NEW MATERIALS
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in many applications, when friction, peeling or induction occurs, it will lead to the accumulation of static charge on the surface of the product, and even cause fire or explosion when static electricity causes corona discharge or spark discharge
In order to improve the antistatic properties of PP, it is usually achieved by adding non-ionic antistatic agent graphene. The antistatic effect is related to the amount of graphene added, but too much graphene will affect the mechanical properties of PP materials. Performance has an impact, which affects its application range

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

[0016] (1) Graphene vulcanization: add graphene to concentrated sulfuric acid with a mass fraction of 90% and heat to 150°C for 10 hours, then filter and wash the vulcanized graphene with distilled water for 5 times to obtain vulcanized graphene;

[0017] (2) According to the mass volume ratio of 1g / 3ml, the graphene sulfide obtained above was dissolved in a 50% pullulan solution by mass fraction, and ultrasonically treated for 5 hours;

[0018] (3) After filtering and drying at a temperature of 100° C. for 10 hours, the modified graphene antistatic agent coated with pullulan was obtained.

[0019] (4) Add 15 parts of the modified graphene prepared above to 100 parts of polypropylene, and blend twin-screw extrusion to prepare antistatic polypropylene sample 1. The properties are shown in Table 1.

Embodiment 2

[0021] (1) Graphene vulcanization: add graphene to concentrated sulfuric acid with a mass fraction of 85% and heat to 145°C for 15 hours, then filter and wash the vulcanized graphene with distilled water for 4 times to obtain vulcanized graphene;

[0022] (2) According to the mass volume ratio of 1g / 2ml, the graphene sulfide obtained above was dissolved in a pullulan solution with a mass fraction of 70%, and ultrasonicated for 8 hours;

[0023] (3) After filtering and drying at a temperature of 120°C for 20 hours, the modified graphene antistatic agent coated with pullulan was obtained;

[0024] (4) Add 15 parts of the above-prepared modified graphene to 100 parts of polypropylene, and blend twin-screw extrusion to prepare antistatic polypropylene sample 2. The properties are shown in Table 1.

Embodiment 3

[0026] (1) Graphene vulcanization: add graphene to concentrated sulfuric acid with a mass fraction of 95% and heat to 140°C for 5 hours, then filter and wash the vulcanized graphene with distilled water for 6 times to obtain vulcanized graphene;

[0027] (2) According to the mass volume ratio of 1g / 5ml, the graphene sulfide obtained above was dissolved in a pullulan solution with a mass fraction of 20%, and ultrasonicated for 2 hours;

[0028] (3) After filtering and drying at a temperature of 150°C for 4 hours, the modified graphene antistatic agent coated with pullulan was obtained;

[0029] (4) Add 15 parts of the modified graphene prepared above to 100 parts of polypropylene, and blend twin-screw extrusion to prepare antistatic polypropylene sample 3. The properties are shown in Table 1.

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

No PUM Login to View More

Abstract

The invention provides a preparation method of a modified graphene antistatic agent, which comprises immersing graphene in concentrated sulfuric acid and vulcanizing it, dissolving the vulcanized graphene in a pullulan solution for ultrasonic treatment, and then filtering and drying to obtain a pullulan-coated coated modified graphene antistatic agent. Since graphene sulfide is covered by amylose to form a cross-linked structure, it has a better conductive effect than traditional layered graphene antistatic agents, so the modified graphene antistatic agent is added to the polymer. The dosage is small, and the surface resistivity of the polymer material is increased, and the antistatic effect of the material is improved.

Description

technical field [0001] The invention belongs to the technical field of modified polymers, and in particular relates to a preparation method of a modified graphene antistatic agent. Background technique [0002] Polypropylene (PP) is a semi-crystalline polymer that is widely used due to its good heat resistance, chemical resistance, non-toxicity, and easy recycling. However, in many applications, when friction, peeling or induction occurs, it will lead to the accumulation of electrostatic charge on the surface of the product, and even cause fire or explosion when static electricity causes corona discharge or spark discharge. In order to improve the antistatic properties of PP, it is usually achieved by adding non-ionic antistatic agent graphene. The antistatic effect is related to the amount of graphene added, but too much graphene will affect the mechanical properties of PP materials. Performance has an impact, which affects its application range. Therefore, finding an eff...

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 Patents(China)
IPC IPC(8): C08K9/10C08K9/02C08K3/04C08L23/12
Inventor 杨桂生计娉婷
Owner HEFEI GENIUS NEW MATERIALS