CN109337352A - A kind of fast-drying type sponge blackboard eraser and preparation method thereof reducing dust pollution - Google Patents
A kind of fast-drying type sponge blackboard eraser and preparation method thereof reducing dust pollution Download PDFInfo
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- CN109337352A CN109337352A CN201811233878.4A CN201811233878A CN109337352A CN 109337352 A CN109337352 A CN 109337352A CN 201811233878 A CN201811233878 A CN 201811233878A CN 109337352 A CN109337352 A CN 109337352A
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
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- C08J9/0023—Use of organic additives containing oxygen
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- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
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- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0085—Use of fibrous compounding ingredients
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- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0095—Mixtures of at least two compounding ingredients belonging to different one-dot groups
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
- C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
- C08J9/102—Azo-compounds
- C08J9/103—Azodicarbonamide
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/04—N2 releasing, ex azodicarbonamide or nitroso compound
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- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
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- C08J2375/06—Polyurethanes from polyesters
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- C08J2401/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives
- C08J2401/08—Cellulose derivatives
- C08J2401/26—Cellulose ethers
- C08J2401/28—Alkyl ethers
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- C08J2433/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
- C08J2433/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters
- C08J2433/06—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters of esters containing only carbon, hydrogen, and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C08J2433/08—Homopolymers or copolymers of acrylic acid esters
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- C08J2467/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
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- C08J2471/00—Characterised by the use of polyethers obtained by reactions forming an ether link in the main chain; Derivatives of such polymers
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/06—Elements
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Abstract
The invention discloses the fast-drying type sponge blackboard erasers and preparation method thereof that one kind can reduce dust pollution, component is as follows: poly adipate succinic acid ester, methyl diphenylene diisocyanate, 1,4- butanediol, azodicarbonamide, polyacrylate, polyether polyol, surfactant, deionized water, porous staple fiber, dimethylethanolamine, cumyl peroxide, carboxymethyl cellulose, organic silicone oil, catalyst, steps are as follows: 1) preparing modified polyurethane；2) material A is prepared；3) material B is prepared；4) it will foam after material A and material B stirring, foaming body, which is embedded into the shell of blackboard eraser, can be prepared by.Blackboard eraser provided by the invention, pass through the synergistic effect between each component, so that the blackboard eraser of preparation is readily cleaned, with very strong water imbibition, water storage and excellent resilience, and since blackboard eraser has good tensile strength, the moisture for discharging it when in use is less, so that blackboard be made to have the effect of rapid-curing cutback.
Description
Technical field
The invention belongs to educational aid technical fields, and in particular to one kind can reduce the fast-drying type sponge blackboard of dust pollution
Scrape along preparation method.
Background technique
With advances in technology and to the raising that teaching environment requires, the environment of education activities is also required to improve.Currently, I
Blackboard used in school of state is still based on traditional blackboard, and the wiping method of this blackboard is hand-held blackboard eraser, in blackboard
On be wiped repeatedly.This blackboard eraser will cause chalk dust and dance in the air all over the sky when wiping blackboard, not only will affect the mood of people, together
When be inhaled into vivo but will be unhealthful.Because attending class writing on the blackboard to be write daily, the chalk dust that erases the board is often the fluffy head of teacher lane
Dirty face, although chalk dust has no big evil to human body, the millions of teacher in China will do writing on the blackboard with chalk daily,
Daily all live in wiping blackboard after chalk dust in, can still cause nose, cigarette, throat discomfort.
Currently, sponge blackboard eraser can be very good to solve the problems, such as this, but existing sponge blackboard eraser is clear in the presence of being not easy
Wash, tend to have dirty water be forced out, need to dip in front of use water wiping and its using when the hypervolia that squeezes out will cause blackboard large area
Humidity, is not well positioned to meet demand at this stage at the disadvantages of causing blackboard that cannot use immediately.
Summary of the invention
The purpose of the present invention is being directed to existing problem, a kind of fast-drying type sponge blackboard that can reduce dust pollution is provided
Scrape along preparation method.
The present invention is achieved by the following technical solutions:
A kind of fast-drying type sponge blackboard eraser reducing dust pollution, which is characterized in that component is as follows by weight: polyadipate
10-15 parts of butanediol ester, 8-12 parts of methyl diphenylene diisocyanate, 4-6 parts of 1,4-butanediol, 5-8 parts of azodicarbonamide,
4-7 parts of polyacrylate, 3-5 parts of polyether polyol, 2-3 parts of surfactant, 35-45 parts of deionized water, porous staple fiber 10-
15 parts, 5-10 parts of dimethylethanolamine, 3-5 parts of cumyl peroxide, 4-6 parts of carboxymethyl cellulose, organic silicone oil 15-18
Part, 0.5-1 parts of catalyst.
Preferably, a kind of fast-drying type sponge blackboard eraser reducing dust pollution, wherein the polyether polyol is by molecule
Amount be 800-2000 propylene glycol polyethers conjunction molecular weight be 400-4000 trimethylolpropane polyethers according to 1-2:1 weight ratio
Made of being mixed with.
Preferably, a kind of fast-drying type sponge blackboard eraser reducing dust pollution, wherein the preparation of the porous staple fiber
Method is as follows: polyester being heated to 255-280 DEG C, carbon nano-fiber is added after its melting, in the case where revolving speed is 50-80r/min
1-2h is mixed, then moves into closed container, is decompressed to 10-20kPa, while supercritical carbon dioxide is passed through into metering pump
It is injected into container, injection rate is the 15-30% of weight polyester, then injection pressure 5-10MPa is sprayed through hollow type spinneret
Cooling spinning is carried out after out, can be prepared by porous staple fiber, wherein the weight ratio of the polyester and carbon nano-fiber is 4-7:1,
It is described to be cooled to quenching, wind speed 2.5-3.0m/s.
Preferably, a kind of fast-drying type sponge blackboard eraser reducing dust pollution, wherein the surfactant be it is non-from
Subtype surfactant is selected from fatty glyceride, fatty acid sorbitan, polysorbate, 13 carbon alcohol ether of isomery, octanol polyoxy
One or both of vinethene.
Preferably, a kind of fast-drying type sponge blackboard eraser reducing dust pollution, wherein the catalyst is by sad sub-
Made of tin and dibutyl tin dilaurate are mixed with according to the weight ratio of 2-2.5:1.
A kind of preparation method for the fast-drying type sponge blackboard eraser reducing dust pollution, the specific steps are as follows:
1) poly adipate succinic acid ester is put into 80-85 DEG C of baking oven and is preheated, by methyl diphenylene diisocyanate and 1,
4- butanediol is put into 60-67 DEG C of baking oven and is preheated, by by the material of preheating mix after revolving speed be 1000-1500r/
3-5min is stirred under min, is then poured into rapidly and is heated to 70-75 DEG C in reactor, isothermal reaction 2-2.5h, to after reaction
It moves to and carries out curing 2-3h in 120-130 DEG C of baking oven, can be prepared by modified polyurethane；
2) by modified polyurethane, azodicarbonamide, polyacrylate, polyether polyol, surfactant, catalyst and go from
It is heated to 30-35 DEG C after sub- water mixing, 40-70min is stirred in the case where revolving speed is 100-200r/min, material A is made；
3) add after mixing dimethylethanolamine, cumyl peroxide, porous staple fiber, carboxymethyl cellulose, organic silicone oil
Heat is stirred 30-50min in the case where revolving speed is 50-100r/min, material B is made to 27-32 DEG C；
4) high-speed stirred is carried out after mixing material A and material B, is subsequently placed in mold and foams, it is finally that foaming body is embedding
Entering into the shell of blackboard eraser can be prepared by.
Preferably, a kind of preparation method for the fast-drying type sponge blackboard eraser reducing dust pollution, wherein in step 1),
The time of the preheating is 2-3min.
The present invention has the advantage that compared with prior art
1. the present invention provides blackboard eraser, poly- in foaming agent azodicarbonamide, adhesive resin using modified polyurethane as main material
It is compounded under the action of acrylate and polyether polyol with porous staple fiber, it will under the skeleton structure of modified polyurethane
Porous staple fiber is attached, to form the soft sponge with very strong absorptive and water storage, porous staple fiber therein
It is pore-creating then to be carried out by injection supercritical carbon dioxide, through cooling by being mixed after polyester melt with carbon nano-fiber
It is prepared after spinning, the flexibility and corrosion resistance of porous staple fiber can be improved in the carbon nano-fiber of addition, to mention
The flexibility and durability of high blackboard eraser carry out pore-creating by the molten mass to polyester and carbon nano-fiber, so that after spinning
Fibrous inside forms many gaps being evenly distributed, so that fiber is assigned with very strong water imbibition, meanwhile, in porous staple fiber
Hole can provide storage condition again for moisture, make it have good water storage；Polyether polyol can then be such that sponge produces
Raw good indentation force deflection, to assign sponge with good resilience；Pass through the association of the pure and mild porous staple fiber of polyether polyols
Same-action finally makes sponge also have excellent resilience, Er Qie with very strong water imbibition and water storage while
When by external force, the moisture of storage can release the writing on wet blackboard, to reach the mesh for reducing dust from flying
, also, modified polyurethane is modified under the action of chain extender 1,4-butanediol by base polyurethane prepolymer for use as, and it is hard to increase it
Duan Hanliang, so that the enhanced strength of polyurethane, so that the tensile strength of sponge is improved, so that blackboard eraser is when in use due to suffered
External force is smaller, and the water release amount for storing it is less, to avoid the occurrence of the phenomenon of blackboard large area humidity, is finally reached black
The purpose that plate can use immediately after wiping.
2. blackboard eraser provided by the invention, by the synergistic effect between each component, so that the blackboard eraser of preparation is easy to clear
It washes, there is very strong water imbibition, water storage and excellent resilience, and since blackboard eraser has good tensile strength,
The moisture for discharging it when in use is less, to achieve the effect that rapid-curing cutback.
Specific embodiment
Below with reference to specific implementation method, the present invention is described further.
Embodiment 1
A kind of fast-drying type sponge blackboard eraser reducing dust pollution, which is characterized in that component is as follows by weight: polyadipate
10 parts of butanediol ester, 8 parts of methyl diphenylene diisocyanate, 4 parts of 1,4-butanediol, 5 parts of azodicarbonamide, polyacrylate
4 parts, 3 parts of polyether polyol, 2 parts of surfactant, 35 parts of deionized water, 10 parts of porous staple fiber, 5 parts of dimethylethanolamine,
3 parts of cumyl peroxide, 4 parts of carboxymethyl cellulose, 15 parts of organic silicone oil, 0.5 part of catalyst.
Preferably, a kind of fast-drying type sponge blackboard eraser reducing dust pollution, wherein the polyether polyol is by molecule
It is mixed according to the weight ratio of 1:1 that the propylene glycol polyethers that amount is 800-2000 closes the trimethylolpropane polyethers that molecular weight is 400-4000
What conjunction was prepared.
Preferably, a kind of fast-drying type sponge blackboard eraser reducing dust pollution, wherein the preparation of the porous staple fiber
Method is as follows: polyester being heated to 255 DEG C, carbon nano-fiber is added after its melting, is mixed in the case where revolving speed is 50r/min
2h is then moved into closed container, is decompressed to 10kPa, while supercritical carbon dioxide being injected into container by metering pump,
Injection rate is 15%, injection pressure 5MPa of weight polyester, cooling spinning is then carried out after the ejection of hollow type spinneret, i.e.,
Porous staple fiber can be made, wherein the weight ratio of the polyester and carbon nano-fiber is 4:1, described to be cooled to quenching, wind
Speed is 2.5m/s.
Preferably, a kind of fast-drying type sponge blackboard eraser reducing dust pollution, wherein the surfactant be it is non-from
Subtype surfactant is selected from fatty glyceride, fatty acid sorbitan, polysorbate, 13 carbon alcohol ether of isomery, octanol polyoxy
One or both of vinethene.
Preferably, a kind of fast-drying type sponge blackboard eraser reducing dust pollution, wherein the catalyst is by sad sub-
Made of tin and dibutyl tin dilaurate are mixed with according to the weight ratio of 2:1.
A kind of preparation method for the fast-drying type sponge blackboard eraser reducing dust pollution, the specific steps are as follows:
1) poly adipate succinic acid ester is put into 80 DEG C of baking ovens and is preheated, by methyl diphenylene diisocyanate and Isosorbide-5-Nitrae-fourth
Glycol is put into 60 DEG C of baking ovens and is preheated, and will stir after the material of preheating mixes in the case where revolving speed is 1000r/min
Then 5min is poured into rapidly in reactor and is heated to 70 DEG C, isothermal reaction 2.5h, to be moved in 120 DEG C of baking ovens after reaction
Curing 3h is carried out, can be prepared by modified polyurethane；
2) by modified polyurethane, azodicarbonamide, polyacrylate, polyether polyol, surfactant, catalyst and go from
30 DEG C are heated to after sub- water mixing, 70min is stirred in the case where revolving speed is 100r/min, material A is made；
3) add after mixing dimethylethanolamine, cumyl peroxide, porous staple fiber, carboxymethyl cellulose, organic silicone oil
Heat is stirred 50min in the case where revolving speed is 50r/min, material B is made to 27 DEG C；
4) high-speed stirred is carried out after mixing material A and material B, is subsequently placed in mold and foams, it is finally that foaming body is embedding
Entering into the shell of blackboard eraser can be prepared by.
Preferably, wherein, in step 1), the time of the preheating is 2min.
Embodiment 2
A kind of fast-drying type sponge blackboard eraser reducing dust pollution, which is characterized in that component is as follows by weight: polyadipate
12 parts of butanediol ester, 10 parts of methyl diphenylene diisocyanate, 5 parts of 1,4-butanediol, 7 parts of azodicarbonamide, polyacrylic acid
5 parts of ester, 4 parts of polyether polyol, 2 parts of surfactant, 40 parts of deionized water, 12 parts of porous staple fiber, dimethylethanolamine 7
Part, 4 parts of cumyl peroxide, 5 parts of carboxymethyl cellulose, 17 parts of organic silicone oil, 0.7 part of catalyst.
Preferably, a kind of fast-drying type sponge blackboard eraser reducing dust pollution, wherein the polyether polyol is by molecule
Amount be 800-2000 propylene glycol polyethers conjunction molecular weight be 400-4000 trimethylolpropane polyethers according to 1.5:1 weight ratio
Made of being mixed with.
Preferably, a kind of fast-drying type sponge blackboard eraser reducing dust pollution, wherein the preparation of the porous staple fiber
Method is as follows: polyester being heated to 270 DEG C, carbon nano-fiber is added after its melting, is mixed in the case where revolving speed is 70r/min
1.5h is then moved into closed container, is decompressed to 15kPa, while supercritical carbon dioxide is injected into container by metering pump
In, injection rate is 23%, injection pressure 7MPa of weight polyester, cooling spinning is then carried out after the ejection of hollow type spinneret,
Can be prepared by porous staple fiber, wherein the weight ratio of the polyester and carbon nano-fiber is 5:1, described to be cooled to quenching,
Wind speed is 2.7m/s.
Preferably, a kind of fast-drying type sponge blackboard eraser reducing dust pollution, wherein the surfactant be it is non-from
Subtype surfactant is selected from fatty glyceride, fatty acid sorbitan, polysorbate, 13 carbon alcohol ether of isomery, octanol polyoxy
One or both of vinethene.
Preferably, a kind of fast-drying type sponge blackboard eraser reducing dust pollution, wherein the catalyst is by sad sub-
Made of tin and dibutyl tin dilaurate are mixed with according to the weight ratio of 2.3:1.
A kind of preparation method for the fast-drying type sponge blackboard eraser reducing dust pollution, the specific steps are as follows:
1) poly adipate succinic acid ester is put into 82 DEG C of baking ovens and is preheated, by methyl diphenylene diisocyanate and Isosorbide-5-Nitrae-fourth
Glycol is put into 64 DEG C of baking ovens and is preheated, and will stir after the material of preheating mixes in the case where revolving speed is 1200r/min
Then 4min is poured into rapidly in reactor and is heated to 73 DEG C, isothermal reaction 2.3h, to be moved in 125 DEG C of baking ovens after reaction
Curing 2.5h is carried out, can be prepared by modified polyurethane；
2) by modified polyurethane, azodicarbonamide, polyacrylate, polyether polyol, surfactant, catalyst and go from
32 DEG C are heated to after sub- water mixing, 50min is stirred in the case where revolving speed is 150r/min, material A is made；
3) add after mixing dimethylethanolamine, cumyl peroxide, porous staple fiber, carboxymethyl cellulose, organic silicone oil
Heat is stirred 40min in the case where revolving speed is 70r/min, material B is made to 30 DEG C；
4) high-speed stirred is carried out after mixing material A and material B, is subsequently placed in mold and foams, it is finally that foaming body is embedding
Entering into the shell of blackboard eraser can be prepared by.
Preferably, wherein, in step 1), the time of the preheating is 2min.
Embodiment 3
A kind of fast-drying type sponge blackboard eraser reducing dust pollution, which is characterized in that component is as follows by weight: polyadipate
15 parts of butanediol ester, 12 parts of methyl diphenylene diisocyanate, 6 parts of 1,4-butanediol, 8 parts of azodicarbonamide, polyacrylic acid
7 parts of ester, 5 parts of polyether polyol, 3 parts of surfactant, 45 parts of deionized water, 15 parts of porous staple fiber, dimethylethanolamine 10
Part, 5 parts of cumyl peroxide, 6 parts of carboxymethyl cellulose, 18 parts of organic silicone oil, 1 part of catalyst.
Preferably, a kind of fast-drying type sponge blackboard eraser reducing dust pollution, wherein the polyether polyol is by molecule
It is mixed according to the weight ratio of 2:1 that the propylene glycol polyethers that amount is 800-2000 closes the trimethylolpropane polyethers that molecular weight is 400-4000
What conjunction was prepared.
Preferably, a kind of fast-drying type sponge blackboard eraser reducing dust pollution, wherein the preparation of the porous staple fiber
Method is as follows: polyester being heated to 280 DEG C, carbon nano-fiber is added after its melting, is mixed in the case where revolving speed is 80r/min
1h is then moved into closed container, is decompressed to 20kPa, while supercritical carbon dioxide being injected into container by metering pump,
Injection rate is 30%, injection pressure 10MPa of weight polyester, cooling spinning is then carried out after the ejection of hollow type spinneret, i.e.,
Porous staple fiber can be made, wherein the weight ratio of the polyester and carbon nano-fiber is 7:1, described to be cooled to quenching, wind
Speed is 3.0m/s.
Preferably, a kind of fast-drying type sponge blackboard eraser reducing dust pollution, wherein the surfactant be it is non-from
Subtype surfactant is selected from fatty glyceride, fatty acid sorbitan, polysorbate, 13 carbon alcohol ether of isomery, octanol polyoxy
One or both of vinethene.
Preferably, a kind of fast-drying type sponge blackboard eraser reducing dust pollution, wherein the catalyst is by sad sub-
Made of tin and dibutyl tin dilaurate are mixed with according to the weight ratio of 2.5:1.
A kind of preparation method for the fast-drying type sponge blackboard eraser reducing dust pollution, the specific steps are as follows:
1) poly adipate succinic acid ester is put into 85 DEG C of baking ovens and is preheated, by methyl diphenylene diisocyanate and Isosorbide-5-Nitrae-fourth
Glycol is put into 67 DEG C of baking ovens and is preheated, and will stir after the material of preheating mixes in the case where revolving speed is 1500r/min
Then 3min is poured into rapidly in reactor and is heated to 75 DEG C, isothermal reaction 2h, to move to after reaction in 130 DEG C of baking ovens into
Row curing 2h, can be prepared by modified polyurethane；
2) by modified polyurethane, azodicarbonamide, polyacrylate, polyether polyol, surfactant, catalyst and go from
35 DEG C are heated to after sub- water mixing, 40min is stirred in the case where revolving speed is 200r/min, material A is made；
3) add after mixing dimethylethanolamine, cumyl peroxide, porous staple fiber, carboxymethyl cellulose, organic silicone oil
Heat is stirred 30min in the case where revolving speed is 100r/min, material B is made to 32 DEG C；
4) high-speed stirred is carried out after mixing material A and material B, is subsequently placed in mold and foams, it is finally that foaming body is embedding
Entering into the shell of blackboard eraser can be prepared by.
Preferably, wherein, in step 1), the time of the preheating is 3min.
Comparative example 1: the 1,4-butanediol in removal step 1), remaining is same as Example 1.
Comparative example 2: the polyether polyol in removal step 2, remaining is same as Example 1.
Comparative example 3: the porous staple fiber in removal step 3), remaining is same as Example 1.
Test example: wiping blackboard using the blackboard eraser that embodiment 1-3 and comparative example 1-3 is provided respectively, and control group is selected general
Logical sponge blackboard eraser, observation blackboard is water stain after wiping and its cleans situation, as a result as shown in Table 1:
Table one
Note: cleannes are that blackboard eraser wipes blackboard one time, the clean situation of blackboard；
Blackboard eraser wipes one piece of blackboard and keeps it clean, and access times are denoted as 1.
As can be seen from Table I, blackboard eraser provided by the invention wipes blackboard, and need to only wipe one time can just make blackboard dry
Only, and after wiping do not occur water droplet on blackboard, have the effect of quick-drying, and can repeatedly be used continuously, reduce cleaning
Number.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
It transforms or replaces, should be covered by the scope of protection of the present invention without what creative work was expected.
Claims (7)
1. the fast-drying type sponge blackboard eraser that one kind can reduce dust pollution, which is characterized in that component is as follows by weight: gathering oneself two
Sour butanediol ester 10-15 parts, 8-12 parts of methyl diphenylene diisocyanate, 4-6 parts of 1,4-butanediol, azodicarbonamide 5-8
Part, 4-7 parts of polyacrylate, 3-5 parts of polyether polyol, 2-3 parts of surfactant, 35-45 parts of deionized water, porous staple fiber
10-15 parts, 5-10 parts of dimethylethanolamine, 3-5 parts of cumyl peroxide, 4-6 parts of carboxymethyl cellulose, organic silicone oil 15-
18 parts, 0.5-1 parts of catalyst.
2. the fast-drying type sponge blackboard eraser that one kind as described in claim 1 can reduce dust pollution, which is characterized in that described poly-
Propylene glycol polyethers that ethoxylated polyhydric alcohol is 800-2000 by molecular weight close trimethylolpropane polyethers that molecular weight is 400-4000 by
According to 1-2:1 weight ratio be mixed with made of.
3. the fast-drying type sponge blackboard eraser that one kind as described in claim 1 can reduce dust pollution, which is characterized in that described more
Hole staple fiber the preparation method is as follows: polyester is heated to 255-280 DEG C, carbon nano-fiber is added after its melting, in revolving speed
It for 1-2h is mixed under 50-80r/min, then moves into closed container, is decompressed to 10-20kPa, while by overcritical dioxy
Change carbon to be injected into container by metering pump, injection rate is the 15-30% of weight polyester, then injection pressure 5-10MPa is passed through
Hollow type spinneret carries out cooling spinning after spraying, can be prepared by porous staple fiber, wherein the polyester and carbon nano-fiber
Weight ratio is 4-7:1, described to be cooled to quenching, wind speed 2.5-3.0m/s.
4. the fast-drying type sponge blackboard eraser that one kind as described in claim 1 can reduce dust pollution, which is characterized in that the table
Face activating agent is nonionic surface active agent, is selected from fatty glyceride, fatty acid sorbitan, polysorbate, isomery 13
One or both of carbon alcohol ether, octanol polyoxyethylene ether.
5. the fast-drying type sponge blackboard eraser that one kind as described in claim 1 can reduce dust pollution, which is characterized in that described to urge
Agent is made of being mixed with as stannous octoate and dibutyl tin dilaurate according to the weight ratio of 2-2.5:1.
6. one kind can reduce the preparation method of the fast-drying type sponge blackboard eraser of dust pollution, feature as described in claim 1
It is, the specific steps are as follows:
1) poly adipate succinic acid ester is put into 80-85 DEG C of baking oven and is preheated, by methyl diphenylene diisocyanate and 1,
4- butanediol is put into 60-67 DEG C of baking oven and is preheated, by by the material of preheating mix after revolving speed be 1000-1500r/
3-5min is stirred under min, is then poured into rapidly and is heated to 70-75 DEG C in reactor, isothermal reaction 2-2.5h, to after reaction
It moves to and carries out curing 2-3h in 120-130 DEG C of baking oven, can be prepared by modified polyurethane；
2) by modified polyurethane, azodicarbonamide, polyacrylate, polyether polyol, surfactant, catalyst and go from
It is heated to 30-35 DEG C after sub- water mixing, 40-70min is stirred in the case where revolving speed is 100-200r/min, material A is made；
3) add after mixing dimethylethanolamine, cumyl peroxide, porous staple fiber, carboxymethyl cellulose, organic silicone oil
Heat is stirred 30-50min in the case where revolving speed is 50-100r/min, material B is made to 27-32 DEG C；
4) high-speed stirred is carried out after mixing material A and material B, is subsequently placed in mold and foams, it is finally that foaming body is embedding
Entering into the shell of blackboard eraser can be prepared by.
7. one kind as claimed in claim 6 can reduce the preparation method of the fast-drying type sponge blackboard eraser of dust pollution, feature
It is, in step 1), the time of the preheating is 2-3min.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811233878.4A CN109337352A (en) | 2018-10-23 | 2018-10-23 | A kind of fast-drying type sponge blackboard eraser and preparation method thereof reducing dust pollution |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811233878.4A CN109337352A (en) | 2018-10-23 | 2018-10-23 | A kind of fast-drying type sponge blackboard eraser and preparation method thereof reducing dust pollution |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111691060A (en) * | 2020-06-10 | 2020-09-22 | 东华大学 | High polymer fiber based on instantaneous pressure-release spinning method, and preparation method and application thereof |
| CN111705368A (en) * | 2020-06-10 | 2020-09-25 | 东华大学 | Method for preparing polypropylene fiber aggregate based on instantaneous pressure-release spinning method and application |
| CN115305644A (en) * | 2022-07-30 | 2022-11-08 | 苏州大乘环保新材有限公司 | Permeable surface cloth for carbon fiber rainwater collection module and preparation method thereof |
-
2018
- 2018-10-23 CN CN201811233878.4A patent/CN109337352A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111691060A (en) * | 2020-06-10 | 2020-09-22 | 东华大学 | High polymer fiber based on instantaneous pressure-release spinning method, and preparation method and application thereof |
| CN111705368A (en) * | 2020-06-10 | 2020-09-25 | 东华大学 | Method for preparing polypropylene fiber aggregate based on instantaneous pressure-release spinning method and application |
| CN111691060B (en) * | 2020-06-10 | 2022-11-11 | 东华大学 | High polymer fiber based on instantaneous pressure-release spinning method, and preparation method and application thereof |
| CN115305644A (en) * | 2022-07-30 | 2022-11-08 | 苏州大乘环保新材有限公司 | Permeable surface cloth for carbon fiber rainwater collection module and preparation method thereof |
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