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

Green environment-friendly dust-free chalk and preparation process thereof

A green and environmentally friendly chalk technology, applied in pencil lead, household utensils, applications, etc., can solve the health hazards of users and people around them, and achieve the effect of good writing, strong flexibility, and stable composition

Active Publication Date: 2016-03-23
苏州冰心文化用品有限公司
View PDF3 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the existing dust-free chalks are dust-free chalks, which often produce imperceptible dust in use, and then cause harm to the health of users and people around them.

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

[0018] Embodiment 1: a kind of green environmental protection dust-free chalk, it is made up of following raw material: dustproof agent, higher fatty alcohol sulfate ester surfactant, medical stone powder, talcum powder, desulfurized gypsum powder, titanium dioxide, processing aid and water, the mass parts of the raw materials are: 15 parts of dustproof agent, 8 parts of higher fatty alcohol sulfate ester surfactant, 4 parts of medical stone powder, 8 parts of talcum powder, 8 parts of desulfurized gypsum powder, 20 parts of titanium dioxide 2 parts, 2 parts of processing aid, 20 parts of water;

[0019] The dustproof agent is a mixture of a humectant and a sulfonic acid waterborne polyurethane, the humectant is a mixture of glycerin and polysorbate, and the mass ratio of the humectant to a sulfonic acid waterborne polyurethane is 2:1.

[0020] Further, the higher fatty alcohol sulfate surfactant is sodium lauryl sulfate; the particle size of the medical stone powder is 300 me...

Embodiment 2

[0028] Embodiment 2: a kind of green environmental protection dust-free chalk, it comprises the raw material of following mass parts: 10 parts of dustproof agent, 5 parts of higher fatty alcohol sulfate ester surfactants, 3 parts of medical stone powder, 6 parts of talcum powder , 6 parts of desulfurized gypsum powder, 15 parts of titanium dioxide, 1 part of processing aid, and 15 parts of water; wherein, the dustproof agent is a mixture of a humectant and sulfonic acid water-based polyurethane, and the humectant is glycerin, so The mass ratio of above-mentioned humectant and sulfonic acid type waterborne polyurethane is 3:1.

[0029] Further, the higher fatty alcohol sulfate surfactant is sodium lauryl sulfate; the particle size of the medical stone powder is 150 mesh; the particle size of the talcum powder is 200 mesh; the processing aid is eighteen The mixture of carbo-9-enyl hexadecanoic acid amide and sodium polyacrylate, the mass ratio is 1:1.

Embodiment 3

[0030] Embodiment 3: a kind of dust-free chalk of environmental protection, it comprises the raw material of following mass parts: 20 parts of dustproof agents, 10 parts of higher fatty alcohol sulfate ester surfactants, 5 parts of medical stone powders, 10 parts of talcum powders , 10 parts of desulfurized gypsum powder, 23 parts of titanium dioxide, 2 parts of processing aids, and 25 parts of water; wherein, the dustproof agent is a mixture of a humectant and sulfonic acid water-based polyurethane, and the humectant is polysorbate , the mass ratio of the humectant to the sulfonic acid type waterborne polyurethane is 1:1.

[0031] Further, the higher fatty alcohol sulfate surfactant is sodium lauryl sulfate; the particle size of the medical stone powder is 600 mesh; the particle size of the talcum powder is 600 mesh; the processing aid is eighteen The mixture of carbo-9-enyl hexadecanoic acid amide and sodium polyacrylate, the mass ratio is 2:1.

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

PropertyMeasurementUnit
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses green environment-friendly dust-free chalk which comprises, by mass parts, 10-20 parts of dust-proof agent, 5-10 parts of higher aliphatic alcohol sulphate surfactant, 3-5 parts of medical stone powder, 6-10 parts of talc, 6-10 parts of flue gas desulfurization gypsum powder, 15-23 parts of titanium dioxide, 1-2 parts of processing agent and 15-25 parts of water. The invention further discloses a process for preparing the green environment-friendly dust-free chalk. According to the green environment-friendly dust-free chalk and the preparation process thereof, the green environment-friendly raw materials are adopted, and the obtained chalk has the advantages of generating no dust and being good in writing performance and easy to erase.

Description

technical field [0001] The invention relates to the field of stationery, in particular to a green and environment-friendly dust-free chalk and a preparation process thereof. Background technique [0002] Chalk is a teaching tool commonly used in schools, and it is also often used as stationery for household or office use, and as a learning toy for children. Now, the chalk used in China mainly includes two kinds of common chalk and dust-free chalk, and its main components are calcium sulfate (gypsum) and calcium carbonate (limestone), or contain a small amount of calcium oxide. Dust-free chalk is an improved product of ordinary chalk, which aims to eliminate chalk dust pollution. Existing dust-free chalk is to add polyalcohols or oils and fats in ordinary chalk as binder, and then add fillers with relatively large proportions, such as clay, cement, marl, etc., so that the specific gravity and volume of chalk dust can be reduced. are enlarged, so that it is not easy to fly a...

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): C09D13/00
CPCC09D13/00
Inventor 李冰心
Owner 苏州冰心文化用品有限公司
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

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