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

Modified plastic particle for graphite pencil lead of plastic pencil

A technology of plastic granules and pencils, which is applied in the direction of pencil leads, applications, household appliances, etc., can solve the problems of not being better solved, easy to drop slag, writing comfort, plastic pencil leads are easy to break, etc., so that it is not easy to break, Solve the problem of easy breakage and slag, and improve the comfort of writing

Inactive Publication Date: 2020-02-04
安徽得亿文教用品有限公司
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing plastic pencil cores are mostly prepared by kneading polymer plastics such as PP, PE, PS and graphite, additives and other materials. Although they meet the concept of environmental protection, they are much inferior in performance compared to wooden pencils. For example, the publication number is CN108864827A discloses a formula and preparation method of a plastic pencil refill. What adopts in the formula is conventional PP, PE polymer plastics. Although the problem of excessive hardness and insufficient rigidity of plastic pencils can be improved to a certain extent, the plastic pencil has been improved. The toughness of the pencil lead, but due to the use of conventional polymer plastics, the problems of plastic pencil leads that are easy to break, easy to drop residue, and poor writing comfort have not been better resolved

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
  • Modified plastic particle for graphite pencil lead of plastic pencil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A modified plastic granule for plastic pencil graphite refill, the specific preparation method is as follows:

[0021] 1) Place the polymer plastic particles in a supercritical fluid carbon dioxide reactor for infiltration and swelling treatment. After the polymer plastic particles reach saturation, ultrasonic technology is assisted to ultrasonically treat the polymer plastic particles in the reactor. After the end, the supercritical fluid carbon dioxide in the reactor is released, the polymer plastic particles are taken out, and placed in a hot water bath for foaming treatment to obtain micro-foamed polymer plastic particles;

[0022] 2) Put the mixed solution of absolute ethanol and deionized water into a water bath, heat to 55°C, add aluminum sec-butoxide, stir at a speed of 500r / min until the solution is colorless and transparent, cool to room temperature and add A mixture of absolute ethanol and nitric acid, after stirring evenly, add acetone and aniline, and conti...

Embodiment 2

[0030] A modified plastic granule for plastic pencil graphite refill, the specific preparation method is as follows:

[0031] 1) Place the polymer plastic particles in a supercritical fluid carbon dioxide reactor for infiltration and swelling treatment. After the polymer plastic particles reach saturation, ultrasonic technology is assisted to ultrasonically treat the polymer plastic particles in the reactor. After the end, the supercritical fluid carbon dioxide in the reactor is released, the polymer plastic particles are taken out, and placed in a hot water bath for foaming treatment to obtain micro-foamed polymer plastic particles;

[0032] 2) Put the mixed solution of absolute ethanol and deionized water into a water bath, heat to 60°C, add aluminum sec-butoxide, stir at a speed of 650r / min until the solution is colorless and transparent, cool to room temperature and add A mixture of absolute ethanol and nitric acid, after stirring evenly, add acetone and aniline, continue ...

Embodiment 3

[0040] A modified plastic granule for plastic pencil graphite refill, the specific preparation method is as follows:

[0041] 1) Place the polymer plastic particles in a supercritical fluid carbon dioxide reactor for infiltration and swelling treatment. After the polymer plastic particles reach saturation, ultrasonic technology is assisted to ultrasonically treat the polymer plastic particles in the reactor. After the end, the supercritical fluid carbon dioxide in the reactor is released, the polymer plastic particles are taken out, and placed in a hot water bath for foaming treatment to obtain micro-foamed polymer plastic particles;

[0042] 2) Put the mixed solution of absolute ethanol and deionized water into a water bath, heat to 65°C, add aluminum sec-butoxide, stir at a speed of 800r / min until the solution is colorless and transparent, cool to room temperature and add A mixture of absolute ethanol and nitric acid, after stirring evenly, add acetone and aniline, continue ...

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
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a modified plastic particle for a graphite pencil lead of a plastic pencil. A preparation method is as follows: 1) performing micro-foaming treatment on a polymer plastic particle to obtain a micro-foamed polymer plastic particle; 2) adding a cellulose aqueous solution into a prepared alumina sol, and performing uniform stirring to obtain a composite sol solution; 3) dropwise adding ammonia water into the composite sol solution, performing mixing and stirring, and then adding the micro-foamed polymer plastic particle into the composite sol solution for vacuum impregnation treatment to obtain a composite gel / micro-foamed polymer composite plastic particle; and 4) performing solvent replacement and freeze-drying on the obtained composite plastic particle. The modifiedplastic particle prepared by the invention can be widely used in a formula of a graphite pencil lead of plastic pencils, can effectively solve the problems of easy breakage and slag dropping of the pencil lead, can also improve the writing comfort of pencils, and has good market application prospects.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a modified plastic particle used for a graphite lead of a plastic pencil. Background technique [0002] Pencil is a kind of cultural school supplies commonly used by people, and is mainly used in aspects such as writing and painting, and its main structure is to be embedded in the penholder by strip pen core and form. Generally, the pen holder of a pencil is usually made of wood. When making it, it is usually necessary to make the log into a pen holder in the shape of a circle, a regular hexagon, or a regular octagon. high, and consume a large amount of high-quality wood, which seriously damages the ecological environment. In addition, in order to produce pen holders of different colors, wooden pencils need to use paint to spray the outer surface, which will inevitably cause pollution of toxic and harmful substances, and it is undoubtedly a major disadvanta...

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): C08L23/12C08L23/06C08L1/02C08K3/22C08J9/12C08J9/16C08J9/22C09D13/00
CPCC08J9/0061C08J9/0066C08J9/122C08J9/16C08J9/22C08J2203/06C08J2203/08C08J2205/044C08J2323/12C08J2401/02C08J2423/06C09D13/00
Inventor 张育玮张枫杨勇
Owner 安徽得亿文教用品有限公司
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