CN101831218B

CN101831218B - Environment-friendly dustless biochemical chalk and making method thereof

Info

Publication number: CN101831218B
Application number: CN2010101486466A
Authority: CN
Inventors: 金松
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-04-16
Filing date: 2010-04-16
Publication date: 2012-02-29
Anticipated expiration: 2030-04-16
Also published as: CN101831218A

Abstract

The invention relates to an environment-friendly dustless biochemical chalk and a making method thereof. The environment-friendly dustless biochemical chalk is made of main materials and auxiliary materials, wherein the main materials comprise the following components in parts by weight: 10-20 parts of calcium carbonate, 9-13 parts of castor oil, 6.5-8.5 parts of bean oil, 5-6 parts of coconut oil, 14-16 parts of surfactant, 4.5-5.5 parts of magnesium carbonate and 3.2-3.8 parts of paraffin; and the auxiliary materials comprise the following components in parts by weight: 25-45 parts of titanium pigment powder, 2-3 parts of glycerol and 0-3 parts of pigment. The obtained dustless biochemical chalk has fine and flexible quality, smooth writing and bright color and is not easily broken, furthermore, the product has clear characters and easy identification no matter the product is dry or wet and is written on a blackboard, a glass or the surface of any substance, and most important of all, no dust occurs in the writing and erasing processes.

Description

A kind of environment-friendly dustless biochemical chalk and preparation method thereof

Technical field

The present invention relates to a kind of environment-friendly dustless biochemical chalk and preparation method thereof.

Background technology

Chalk is writing on the blackboard demonstration in the education activities, passes on the important writing implement of the content of courses.Though last for a long time, even to this day, still in all, use in primary school and the activity of part Teaching in University comprehensively.The chalk that traditional technology is made is to process with gypsum, lime and other auxiliary material.Though have fluent writing, clear, be easy to the characteristics of wiping, the shortcoming that can't remedy is forever also arranged with not enough.Mainly show as:

1.. quality is crisp, easy fracture and fragmentation, very big waste is write and is caused in influence.

2.. because of the product pattern decision, its remainder (chalk head) can't use, and causes waste.

3.. chalk make moist or blackboard surface moisture writing unintelligible, can't use.

4.. also being the most important, is exactly serious dust pollution, influences teacher and SH.

According to surveying and determination, in our school, in every square metre of classroom, more than 70,000 dust particle just arranged at present, exceed the highest limit standard more than 6 times (898 microgram/cubic meter).These dust are sucked by teacher, student, will directly cause respiratory tract, pulmonary infection, cause the generation of diseases such as trachitis, asthma, pneumonia.And objectionable impurities flows into blood vessel, can cause the heart, pulmonary function to descend again, causes multiple disease, thereby heavy damage teacher, student's is healthy.

At present, on the realia market of China,,, therefore do not reach " dustless " effect because of its proportioning components does not have essential change though panoramic what is called " dust-free chalk " occurred at all yet.The virtual at most index that reduces dust percentum of its product introduction.As long as bring an examination, or dust from flying.

Summary of the invention

In order to overcome the problem that exists in the prior art, the invention provides a kind of environment-friendly dustless biochemical chalk and preparation method thereof, not only the quality exquisiteness is pliable and tough for resulting dustless biochemical chalk, fluent writing; Color and luster is beautiful, and easy fracture is broken, and no matter this product is done, wet; Also no matter write at blackboard, glass or any material surface, all writing is clear, is easy to identification; The most important thing is, write with wiping process in, do not have dust to occur.

Environment-friendly dustless biochemical chalk of the present invention is made up of major ingredient and auxiliary material; The composition and the weight part of this major ingredient are following: lime carbonate: 10-20 weight part, Viscotrol C: 9-13 weight part, soya-bean oil: 6.5-8.5 weight part; Oleum Cocois: 5-6 weight part; Tensio-active agent: 14-16 weight part, magnesiumcarbonate: 4.5-5.5 weight part, paraffin: 3.2-3.8 weight part; The composition and the weight part of this auxiliary material are following: white titanium pigment: 25-45 weight part, glycerine: 2-3 weight part, pigment: 0-3 weight part.

Wherein, above-mentioned tensio-active agent can be one or more in AS (like Triple Pressed Stearic Acid, X 2073) or the cats product (like quaternized thing).

Pigment is the 0.5-2 weight part, is selected from red iron oxide, lemon yellow, iron oxide yellow, barba hispanica or malachite green.

The making method of above-mentioned environment-friendly dustless biochemical chalk comprises the steps:

A. lime carbonate, Viscotrol C, soya-bean oil, Oleum Cocois, tensio-active agent, magnesiumcarbonate, paraffin are carried out proportioning by weight; Put into the hot melt whisking appliance after mixing with 1500-2000 rev/min; Stirred 10-12 hour, service temperature is 350-370 degree centigrade, processes major ingredient;

B. after the glycerine of major ingredient that makes and 2-3 weight part and 25-45 weight part white titanium pigment being mixed, put into the hot melt whisking appliance once more with 2500-2800 rev/min, stirred 1-1.5 hour, service temperature is 95-105 degree centigrade, processes raw material;

C. the raw material in the whisking appliance is injected the chalk forming mould,, the raw material in the mould is solidified, obtain finished product after the demoulding through cooling to this forming mould.

Dustless biochemical chalk of the present invention is the harmless brand-new writing implement of environmental-friendly dust-free advanced in the world, and not only the quality exquisiteness is pliable and tough, fluent writing; Color and luster is beautiful, and easy fracture is broken, and no matter this product is done, wet; Also no matter write at blackboard, glass or any material surface, all writing is clear, is easy to identification; More topmost, its real " dustless " performance that yes: reality write with wiping process in, do not have dust to occur.This has just thoroughly eliminated the harm of traditional chalk dust to teacher, SH.Really accomplished environmental protection, energy-saving and emission-reduction, made to numerous teachers, the student is healthy does not work the mischief.

Embodiment

Embodiment 1

15g lime carbonate, 11g Viscotrol C, 7.5g soya-bean oil, 5.5g Oleum Cocois, 15g Triple Pressed Stearic Acid, 5g magnesiumcarbonate, 3.5g paraffin are mixed, put into the hot melt whisking appliance then with 1600 rev/mins, stirred 11 hours, service temperature is 350 degrees centigrade, processes major ingredient; Resulting major ingredient with after 35g white titanium pigment and 2.5g glycerine mix, is put into the hot melt whisking appliance with 2600 rev/mins once more, stirred 1 hour, service temperature is 100 degrees centigrade, processes raw material; Raw material in the whisking appliance is injected the chalk forming mould,, the raw material in the mould is solidified, obtain finished product after the demoulding through cooling to this forming mould.

Resulting dustless biochemical chalk have write smoothly, writing is clear, not fugitive color, color and luster is beautiful, hardness is high, characteristics such as easy fracture not, writer's finger, facial, clothing do not have dust to be infected with, it is residual that existing blackboard eraser is removed writing no dust on blackboard.

Embodiment 2

16g lime carbonate, 10g Viscotrol C, 8g soya-bean oil, 5g Oleum Cocois, 15.5g sodium laurylsulfonate, 4.5g magnesiumcarbonate, 3.6g paraffin are mixed; Put into the hot melt whisking appliance then with 2000 rev/mins; Stirred 12 hours, service temperature is 360 degrees centigrade, processes major ingredient; Resulting major ingredient with after 37g white titanium pigment and 2g glycerine mix, is put into the hot melt whisking appliance with 2800 rev/mins once more, stirred 1.5 hours, service temperature is 105 degrees centigrade, processes raw material; Raw material in the whisking appliance is injected the chalk forming mould,, the raw material in the mould is solidified, obtain finished product after the demoulding through cooling to this forming mould.

Claims

1. an environment-friendly dustless biochemical chalk is characterized in that, this dust-free chalk is made up of major ingredient and auxiliary material, and the composition and the weight part of this major ingredient are following:

Lime carbonate: the 10-20 weight part,

Viscotrol C: the 9-13 weight part,

Soya-bean oil: the 6.5-8.5 weight part,

Oleum Cocois: the 5-6 weight part,

Tensio-active agent: the 14-16 weight part,

Magnesiumcarbonate: the 4.5-5.5 weight part,

Paraffin: 3.2-3.8 weight part;

The composition and the weight part of this auxiliary material are following:

White titanium pigment: the 25-45 weight part,

Glycerine: the 2-3 weight part,

Pigment: 0-3 weight part.

2. according to the described a kind of environment-friendly dustless biochemical chalk of claim 1, it is characterized in that: said tensio-active agent is selected from one or more in quaternized thing, Triple Pressed Stearic Acid, the X 2073.

3. according to claim 1 or 2 described a kind of environment-friendly dustless biochemical chalks, it is characterized in that: said pigment is the 0.5-2 weight part, is selected from red iron oxide, lemon yellow, iron oxide yellow, barba hispanica or malachite green.

4. according to each described a kind of environment-friendly dustless biochemical chalk making method of claim 1-3, it is characterized in that, comprise the steps:

A. lime carbonate, Viscotrol C, soya-bean oil, Oleum Cocois, tensio-active agent, magnesiumcarbonate, paraffin are carried out proportioning by weight; Put into the hot melt whisking appliance after the mixing with 1500-2000 rev/min; Stirred 10-12 hour, service temperature is 350-370 degree centigrade, processes major ingredient;

B. after the pigment of the glycerine of the white titanium pigment of major ingredient that makes and 25-45 weight part, 2-3 weight part and 0-3 weight part being mixed; Put into the hot melt whisking appliance once more with 2500-2800 rev/min; Stirred 1-1.5 hour, service temperature is 95-105 degree centigrade, processes raw material;