CN110305255A - A kind of preparation method of the defrosting compound for building brick - Google Patents
A kind of preparation method of the defrosting compound for building brick Download PDFInfo
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- CN110305255A CN110305255A CN201910633328.XA CN201910633328A CN110305255A CN 110305255 A CN110305255 A CN 110305255A CN 201910633328 A CN201910633328 A CN 201910633328A CN 110305255 A CN110305255 A CN 110305255A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F265/00—Macromolecular compounds obtained by polymerising monomers on to polymers of unsaturated monocarboxylic acids or derivatives thereof as defined in group C08F20/00
- C08F265/04—Macromolecular compounds obtained by polymerising monomers on to polymers of unsaturated monocarboxylic acids or derivatives thereof as defined in group C08F20/00 on to polymers of esters
- C08F265/06—Polymerisation of acrylate or methacrylate esters on to polymers thereof
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/18—Materials not provided for elsewhere for application to surfaces to minimize adherence of ice, mist or water thereto; Thawing or antifreeze materials for application to surfaces
- C09K3/185—Thawing materials
Abstract
The invention discloses a kind of preparation methods of defrosting compound for building brick, defrosting compound is the polymer emulsion of nucleocapsid double structure, specifically ingredient is, monomer: Diacetone Acrylamide (DAAM) and adipic dihydrazide (ADH) reaction monomers, acrylic acid (AA) reaction monomers, methyl methacrylate (MMA) hard monomer, butyl acrylate (BA) soft monomer, glycidyl methacrylate (GMA) and hydroxy-ethyl acrylate (HEA) function monomer, compound emulsifying agent: nonylphenol polyoxyethylene ether ammonium sulfate (CO-436), alkyl phenol polyoxyethylene ether -9 (CO-630), allyl -2- hydroxypropyl ether sodium sulphate (COPS-1), initiator: ammonium persulfate (APS), tert-butyl hydroperoxide (TBHP) and rongalite (SFS), Electrolyte: sodium bicarbonate (NaHCO3) and deionized water, polymer emulsion of core shell structure defrosting compound is obtained after heated reaction.The present invention can form one layer of glue film on building brick surface, to inhibit scum phenomenon caused by the migration of cement floor tile neutral and alkali substance, while can guarantee the intensity of building brick so that other performances are unaffected.
Description
Technical field
The invention belongs to defrosting compound exploitations and building common brick performance improvement technical field, specially a kind of to be used for building brick
Defrosting compound preparation method.
Background technique
Sintered building common brick is chronically at wet environment or is in contact using Shi Yushui after kiln discharge, red
Among some gaps of brick surface or inside, a kind of crystallization salt of similar frost will be generated, this phenomenon is known as scum.It is general
Frost can generate one layer of salt incrustation, can not only impact to the appearance of wall, also easily make rendering layer that peeling phenomenon occur, and shorten product
Service life.Water existing for interiors of products gap can be such that salt is dissolved, and crystallization is just generated after water evaporation.Accompanying crystallization body
Prolonged expansion, the internal stress of the hole of interiors of products also can constantly increase therewith, finally be damaged product, especially " have not been cooked or heated long enough
Brick ", influence of this destructive power to it can be bigger.
Brick surface if any convex portion is just easy to produce scum, such as faceted portions, edge portions and the part for having bracing wire,
However only have the place of protrusion to will appear scum in bracing wire part, other positions are then not in.The solubility contained in pug
The quality of the sulfate of property will affect these ions of calcium, magnesium, sulfur oxide in the degree of scum, especially sulfate, regulation
Range includes: that calcium ion is no more than 0.00593%, and the magnesium ion contained is no more than 0.00208%, and the sulfur oxide example contained does not surpass
Cross 0.0094%.Adobe, which encounters the gas containing element sulphur when being dried, can also cause scum, sulfurous gas can and raw material
In carbonate react and produce sulfuric acid and salt out, cause brick surface scum occur.Therefore, cause scum that need to meet 3 simultaneously
A factor: containing in the feed comprising carbonate, in flue gas containing sulphur, in adobe can be white by flowing water.
The method not solved thoroughly to these problems at present has seriously affected the production and application of cement floor tile.This hair
The technical principle that bright method uses is to completely cut off sodium sulphate and outside water molecule contacts by constructing one layer of glue film on common brick surface,
To inhibit common brick surface scum problem, and keep the indices of common brick unaffected.
Summary of the invention
A kind of the problem to be solved by the invention is to provide operating procedures simple, practical removing for building brick
The preparation method of creme.
The invention is realized by the following technical scheme:
A kind of preparation method of the defrosting compound for building brick, includes the following steps:
(1) preparation of compound emulsifying agent, initiator: a certain amount of nonylphenol polyoxyethylene ether ammonium sulfate (CO- is weighed in proportion
436), alkyl phenol polyoxyethylene ether -9 (CO-630), allyl -2- hydroxypropyl ether sodium sulphate (COPS-1) are uniformly mixed, stirring
It is spare to make compound emulsifying agent after 20-30 min；Take a certain amount of ammonium persulfate (APS) that initiator solution (concentration 0.067 is made
G/mL), take appropriate tert-butyl hydroperoxide (TBHP) and rongalite (SFS) that solution for standby is respectively prepared, concentration is respectively 0.1
g/mL；
(2) preparation of pre-emulsion: taking the compound emulsifying agent in a certain amount of step (1) to be add to deionized water, then by stratum nucleare list
Body: Diacetone Acrylamide (DAAM), methyl methacrylate (MMA), butyl acrylate (BA), acrylic acid (AA), methyl-prop
Olefin(e) acid ethylene oxidic ester (GMA), hydroxy-ethyl acrylate (HEA) are slowly added into compound emulsifying agent, 30 min of high-speed stirred, shape
Nucleating layer pre-emulsion；The compound emulsifying agent in a certain amount of step (1) is taken to be add to deionized water, by shell monomers: methyl-prop
E pioic acid methyl ester (MMA), butyl acrylate (BA), acrylic acid (AA), glycidyl methacrylate (GMA), acrylic acid hydroxyl second
Ester (HEA) is slowly added into compound emulsifying agent, and shell pre-emulsion is made in strong stirring 20-30 min；
(3) preparation of polymer emulsion of core shell structure defrosting compound: equipped with blender, thermometer, reflux condensing tube and constant pressure drop
In 500 mL four-hole boiling flasks of liquid funnel, NaHCO is added3, n- dodecyl mereaptan (DDM), deionized water, stirring, wait be uniformly dispersed
Afterwards, 1/10th of the stratum nucleare pre-emulsion in step (2) are joined, adds initiator ammonium persulfate (APS) aqueous solution
One third, be warming up to 80 DEG C, after blue phase to appear, while be added dropwise residue 9/10ths stratum nucleare pre-emulsion and other mistake
The one third of ammonium sulfate (APS) aqueous solution, 1-1.5 h are dripped off, and are warming up to 85 DEG C, keep the temperature 1 h, are cooled to 80 DEG C, are added dropwise
Ammonium persulfate (APS) aqueous solution of shell pre-emulsion and last one third, 1-1.5 h are dripped off, and are warming up to 85 DEG C of heat preservations 1.5
Appropriate TBHP and SFS is added in h, then be cooled to 65 DEG C, after reacting 30 min, be cooled to 40 DEG C hereinafter, with ammonium hydroxide adjust pH=
Then a certain amount of adipic dihydrazide (ADH) aqueous solution is added in 7-8, filtering and discharging, stir 20 min, obtain core-shell structure
Polymer emulsion defrosting compound.
It is further:
In step (1), the nonylphenol polyoxyethylene ether ammonium sulfate (CO-436) in compound emulsifying agent, alkyl phenol polyoxyethylene ether -9
(CO-630), the mass ratio of allyl -2- hydroxypropyl ether sodium sulphate (COPS-1) is m (CO-436): m (CO-630): m (COPS-
1)=(1-1.5):(0.8-1):(0.2-0.3)。
In step (2), the compound emulsifying agent additive amount in the stratum nucleare pre-emulsion is the 2- of nuclear layer monomer gross mass
2.8%, DAAM dosage are the 3-4 wt% of nuclear layer monomer gross mass, acrylic acid (AA), Glycidyl methacrylate in stratum nucleare pre-emulsion
The additive amount of glyceride (GMA), hydroxy-ethyl acrylate (HEA) are as follows: m (AA)=stratum nucleare addition monomer gross mass 1-3 wt %, m
(GMA+HEA)=stratum nucleare adds the 3-6 wt% of monomer gross mass, and m (GMA): m (HEA)=1:1, methyl methacrylate
(MMA), the additive amount of butyl acrylate (BA) is respectively the 44%-46% of stratum nucleare addition monomer gross mass, and m (MMA): m (BA)=
1:1, deionized water addition quality and stratum nucleare addition monomer gross mass ratio are 1:1 in stratum nucleare pre-emulsion.
In step (2), the compound emulsifying agent additive amount in the shell pre-emulsion is the 2- of shell monomers gross mass
2.8%, the addition of acrylic acid (AA), glycidyl methacrylate (GMA), hydroxy-ethyl acrylate (HEA) in shell pre-emulsion
Amount accounts for the percentage of shell monomers gross mass are as follows: m (AA)=4 wt%, m (GMA+HEA)=4-8 wt% and m (GMA): m (HEA)=1:
1, methyl methacrylate (MMA), butyl acrylate (BA) additive amount be respectively shell addition monomer gross mass 44%-
46%, and m (MMA): m (BA)=1:1, deionized water adds quality and shell pre-emulsion monomer gross mass ratio is 1:1.
In step (3), the NaHCO3Additive amount is that 0.15-0.2 wt%, the DDM of monomer total amount in step (2) are used
It is 0.4 wt% of stratum nucleare monomer total amount in step (2) that amount, which is 0.2-0.35 wt%, the APS dosage of monomer total amount in step (2),
Post-processing phase THBP dosage is that 0.1 wt%, SFS of the sum of stratum nucleare and shell monomers total amount in step (2) is stratum nucleare and shell list
DAAM mass ratio is 1 in 0.1 wt% of the sum of body total amount, ADH mass and step (2).
Beneficial effects of the present invention:
Present invention process is simple and practical, significant effect, by controlling the monomeric species and additive amount of emulsion, can prepare film forming
The defrosting compound good, hardness is higher, stability is good.Prepared defrosting compound can be widely applied to various building bricks, have good
Application prospect.
Detailed description of the invention
Photo in kind after Fig. 1 common brick scum and defrosting；(a) common brick scum phenomenon material object photo, (b) using after defrosting compound
Common brick is without scum phenomenon.
White XRD diagram on Fig. 2 common brick.
The transmission electron microscope picture of Fig. 3 defrosting agent emulsion.
Specific embodiment
The present invention is done below with reference to embodiment and is further explained.The following example is merely to illustrate the present invention, but
It is not used to limit practical range of the invention.
Embodiment 1
(1) 2 g nonylphenol polyoxyethylene ether ammonium sulfate (CO-436), 1.6 g alkyl phenol polyoxies the preparation of compound emulsifying agent: are weighed
Vinethene -9 (CO-630), 0.4 g allyl -2- hydroxypropyl ether sodium sulphate (COPS-1) are uniformly mixed, after stirring 20-30 min
It is spare；6 mL ammonium persulfate (APS) initiator solutions (concentration is 0.067 g/mL) is prepared, prepares 2 mL t-butyl peroxies respectively
It is spare to change hydrogen (TBHP) and rongalite (SFS) solution (concentration is 0.1 g/mL)；
(2) preparation of pre-emulsion: taking the compound emulsifying agent in 2 g steps (1) to be added in 100 mL deionized waters, then by 3 g
Diacetone Acrylamide (DAAM), 44 g methyl methacrylates (MMA), 44 g butyl acrylates (BA), 3 g acrylic acid hydroxyl second
Ester (HEA), 3 g acrylic acid (AA), 3 g glycidyl methacrylate (GMA) are slowly added into composite emulsifying agent solution,
30 min of high-speed stirred forms stratum nucleare pre-emulsion；
The compound emulsifying agent in 2 g steps (1) is taken to be added in 100 mL deionized waters, by 44 g methyl methacrylates
(MMA), 44 g butyl acrylates (BA), 4 g hydroxy-ethyl acrylates (HEA), 4 g acrylic acid (AA), 4 g Glycidyl methacrylates
Glyceride (GMA) is slowly added into compound emulsifying agent, and shell pre-emulsion is made in strong stirring 20-30 min.
(3) blender, thermometer, reflux condensing tube and perseverance the preparation of polymer emulsion of core shell structure defrosting compound: are being housed
In the 500 mL four-hole boiling flasks for pressing dropping funel, 0.3 g NaHCO is added3, 0.4 g n- dodecyl mereaptan (DDM), 19.33 mL go
The stratum nucleare pre-emulsion of 20.2 g is added after being uniformly dispersed in ionized water, stirring, and the initiator ammonium persulfate (APS) of 2 mL is water-soluble
Liquid, is warming up to 80 DEG C, after blue phase to appear, while 181.8 g stratum nucleare pre-emulsions is added dropwise and 2 mL ammonium persulfates (APS) are water-soluble
Liquid, 1-1.5 h are dripped off, and are warming up to 85 DEG C, keep the temperature 1 h, are cooled to 80 DEG C, and the mistake of 202 g shell pre-emulsions and 2 mL is added dropwise
Ammonium sulfate (APS) aqueous solution, 1-1.5 h are dripped off, and are warming up to 85 DEG C of 1.5 h of heat preservation, are cooled to 65 DEG C, and 2 mL TBHP are added
Solution, 2 mL SFS solution, react 30 min after, be cooled to 40 DEG C hereinafter, with ammonium hydroxide adjust pH=7-8, filtering and discharging, then
The ADH aqueous solution (0.15 g/mL) of 20 mL is added, both obtains polymer emulsion of core shell structure defrosting compound after stirring 20 min.
Through means such as granularmetric analysis, dsc analysis, tem analysis, XRD analysis, it is found that the ingredient of scum is mainly sodium sulphate crystalline substance
Body (XRD result is consistent with the peak position of sodium sulphate standard card), the stratum nucleare latex particle size of defrosting compound are about 75 nm, final cream
Micelle diameter is about 155 nm, and thermogravimetric the result shows that lotion 18.2 °C, 44.5 °C there are two apparent glass transition temperature turn
Become section, show preparation polymer have core-shell structure, while TEM figure the result shows that the emulsion particle of lotion at regular ball
Shape, size distribution is uniform, has apparent nucleocapsid double-layer structure.Building brick of the defrosting compound of preparation to scum is sprayed
It applies, defrosting effect is obvious, and the building brick after spraying defrosting compound is placed on to the weathering tests of outdoor carry out 1 year, and discovery is built
It builds and scum phenomenon is not occurring substantially with brick, show that defrosting compound has good stability and inoxidizability.
Embodiment 2
(1) 3 g nonylphenol polyoxyethylene ether ammonium sulfate (CO-436), 2 g alkyl phenol polyoxy second the preparation of compound emulsifying agent: are weighed
Alkene ether -9 (CO-630), 0.6 g allyl -2- hydroxypropyl ether sodium sulphate (COPS-1) are uniformly mixed, and stir 20-30 min standby
With;6 mL ammonium persulfate (APS) initiator solutions (concentration is 0.067 g/mL) is prepared, prepares 2 mL t-butyl peroxies respectively
It is spare to change hydrogen (TBHP) and rongalite (SFS) solution (concentration is 0.1 g/mL)；
(2) preparation of pre-emulsion: taking the compound emulsifying agent in 2.8 g steps (1) to be added in 100 mL deionized waters, then by 4
G Diacetone Acrylamide (DAAM), 46 g methyl methacrylates (MMA), 46 g butyl acrylates (BA), 1.5 g acrylic acid
Hydroxyl ethyl ester (HEA), 1 g acrylic acid (AA), 1.5 g glycidyl methacrylate (GMA) are slowly added into compound emulsifying agent
In solution, 30 min of high-speed stirred forms stratum nucleare pre-emulsion；
The compound emulsifying agent of 2.8 g is taken to be added in 100 mL deionized waters, by 46 g methyl methacrylates (MMA), 46 g
Butyl acrylate (BA), 2 g hydroxy-ethyl acrylates (HEA), 4 g acrylic acid (AA), 2 g glycidyl methacrylate
(GMA) it is slowly added into compound emulsifying agent, shell pre-emulsion is made in strong stirring 20-30 min.
(3) blender, thermometer, reflux condensing tube and perseverance the preparation of polymer emulsion of core shell structure defrosting compound: are being housed
In the 500 mL four-hole boiling flasks for pressing dropping funel, 0.4 gNaHCO is added3, 0.7 g n- dodecyl mereaptan (DDM), 19.33 mL go
The stratum nucleare pre-emulsion of 20.28 g, initiator ammonium persulfate (APS) water of 2 mL is added after being uniformly dispersed in ionized water, stirring
Solution, is warming up to 80 DEG C, after blue phase to appear, while 182.52 g stratum nucleare pre-emulsions and 2 mL ammonium persulfate (APS) water is added dropwise
Solution, 1-1.5 h are dripped off, and are warming up to 85 DEG C, keep the temperature 1 h, are cooled to 80 DEG C, and 202.8 g shell pre-emulsions and 2 mL are added dropwise
Ammonium persulfate (APS) aqueous solution, 1-1.5 h drips off, and is warming up to 85 DEG C of 1.5 h of heat preservation, is cooled to 65 DEG C, and 2 mL are added
TBHP solution, 2 mL SFS solution, react 30 min after, be cooled to 40 DEG C hereinafter, with ammonium hydroxide adjust pH=7-8, filtering and discharging,
Then the ADH aqueous solution (concentration is 0.2 g/mL) of 20 mL is added, had both obtained polymer emulsion of core shell structure after 20 min of stirring and has removed
Creme.
Through means such as granularmetric analysis, dsc analysis, tem analysis, XRD analysis, it is found that the ingredient of scum is mainly sodium sulphate crystalline substance
Body (XRD result is consistent with the peak position of sodium sulphate standard card), the stratum nucleare latex particle size of defrosting compound are about 77 nm, final cream
Micelle diameter is about 158 nm, and thermogravimetric the result shows that lotion 18.8 °C, 45.1 °C there are two apparent glass transition temperature turn
Become section, show preparation polymer have core-shell structure, while TEM figure the result shows that the emulsion particle of lotion at regular ball
Shape, size distribution is uniform, has apparent nucleocapsid double-layer structure.Building brick of the defrosting compound of preparation to scum is sprayed
It applies, defrosting effect is obvious, and the building brick after spraying defrosting compound is placed on to the weathering tests of outdoor carry out 1 year, and discovery is built
It builds and scum phenomenon is not occurring substantially with brick, show that defrosting compound has good stability and inoxidizability.
Claims (5)
1. a kind of preparation method of the defrosting compound for building brick, which comprises the steps of:
(1) preparation of compound emulsifying agent, initiator: a certain amount of nonylphenol polyoxyethylene ether ammonium sulfate (CO- is weighed in proportion
436), alkyl phenol polyoxyethylene ether -9 (CO-630), allyl -2- hydroxypropyl ether sodium sulphate (COPS-1) are uniformly mixed, stirring
It is spare to make compound emulsifying agent after 20-30 min；Take a certain amount of ammonium persulfate (APS) that initiator solution, concentration 0.067 is made
g/mL；Take appropriate tert-butyl hydroperoxide (TBHP) and rongalite (SFS) that solution for standby is respectively prepared, concentration is respectively 0.1 g/
mL；
(2) preparation of pre-emulsion: taking the compound emulsifying agent in a certain amount of step (1) to be add to deionized water, then by stratum nucleare list
Body: Diacetone Acrylamide (DAAM), methyl methacrylate (MMA), butyl acrylate (BA), acrylic acid (AA), methyl-prop
Olefin(e) acid ethylene oxidic ester (GMA), hydroxy-ethyl acrylate (HEA) are slowly added into compound emulsifying agent, 30 min of high-speed stirred, shape
Nucleating layer pre-emulsion；
The compound emulsifying agent in a certain amount of step (1) is taken to be add to deionized water, by shell monomers: methyl methacrylate
(MMA), butyl acrylate (BA), acrylic acid (AA), glycidyl methacrylate (GMA), hydroxy-ethyl acrylate (HEA) are slow
Slowly it is added to compound emulsifying agent, shell pre-emulsion is made in strong stirring 20-30 min；
(3) preparation of polymer emulsion of core shell structure defrosting compound: equipped with blender, thermometer, reflux condensing tube and constant pressure drop
In 500 mL four-hole boiling flasks of liquid funnel, NaHCO is added3, n- dodecyl mereaptan (DDM), deionized water, stirring, wait be uniformly dispersed
Afterwards, 1/10th of the stratum nucleare pre-emulsion in step (2) are joined, adds initiator ammonium persulfate (APS) aqueous solution
One third, be warming up to 80 DEG C, after blue phase to appear, while be added dropwise residue 9/10ths stratum nucleare pre-emulsion and other mistake
The one third of ammonium sulfate (APS) aqueous solution, 1-1.5 h are dripped off, and are warming up to 85 DEG C, keep the temperature 1 h, are cooled to 80 DEG C, are added dropwise
Ammonium persulfate (APS) aqueous solution of shell pre-emulsion and last one third, 1-1.5 h are dripped off, and are warming up to 85 DEG C of heat preservations 1.5
Appropriate TBHP and SFS is added in h, then be cooled to 65 DEG C, after reacting 30 min, be cooled to 40 DEG C hereinafter, with ammonium hydroxide adjust pH=
Then a certain amount of adipic dihydrazide (ADH) aqueous solution is added in 7-8, filtering and discharging, stir 20 min, obtain core-shell structure
Polymer emulsion defrosting compound.
2. a kind of preparation method of defrosting compound for building brick according to claim 1, which is characterized in that step
(1) nonylphenol polyoxyethylene ether ammonium sulfate (CO-436), (CO- of alkyl phenol polyoxyethylene ether -9 in, in compound emulsifying agent
630), the mass ratio of allyl -2- hydroxypropyl ether sodium sulphate (COPS-1) be m (CO-436): m (CO-630): m (COPS-1)=
(1-1.5):(0.8-1):(0.2-0.3)。
3. a kind of preparation method of defrosting compound for building brick according to claim 1, which is characterized in that step
(2) in, the compound emulsifying agent additive amount in the stratum nucleare pre-emulsion is the 2-2.8% of nuclear layer monomer gross mass, DAAM dosage
For the 3-4 wt% of nuclear layer monomer gross mass, acrylic acid (AA), glycidyl methacrylate (GMA), third in stratum nucleare pre-emulsion
The additive amount of olefin(e) acid hydroxyl ethyl ester (HEA) are as follows: m (AA)=stratum nucleare addition monomer gross mass 1-3 wt%, m (GMA+HEA) are stratum nucleare
Add the 3-6 wt% of monomer gross mass, and m (GMA): m (HEA 1:1, methyl methacrylate (MMA), butyl acrylate
(BA) additive amount is respectively the 44%-46% of stratum nucleare addition monomer gross mass, and m (MMA): m (BA)=1:1, in stratum nucleare pre-emulsion
It is 1:1 that deionized water, which adds quality and stratum nucleare addition monomer gross mass ratio,.
4. a kind of preparation method of defrosting compound for building brick according to claim 1, which is characterized in that step
(2) in, the compound emulsifying agent additive amount in the shell pre-emulsion is the 2-2.8% of shell monomers gross mass, shell pre-emulsion
Middle acrylic acid (AA), glycidyl methacrylate (GMA), hydroxy-ethyl acrylate (HEA) additive amount to account for shell monomers total
The percentage of quality are as follows: m (AA)=4 wt%, m (GMA+HEA)=4-8 wt%, and m (GMA): m (HEA)=1:1, methacrylic acid
Methyl esters (MMA), butyl acrylate (BA) additive amount be respectively the 44%-46% of shell addition monomer gross mass, and m (MMA): m
(BA)=1:1, deionized water adds quality and shell pre-emulsion monomer gross mass ratio is 1:1.
5. a kind of preparation method of defrosting compound for building brick according to claim 1, which is characterized in that step
(3) in, the NaHCO3Additive amount is that 0.15-0.2 wt% of monomer total amount, DDM dosage are in step (2) in step (2)
0.2-0.35 wt%, the APS dosage of monomer total amount is 0.4 wt% of stratum nucleare monomer total amount in step (2), post-processes phase THBP
Dosage is that 0.1 wt%, SFS of the sum of stratum nucleare and shell monomers total amount in step (2) is the sum of stratum nucleare and shell monomers total amount
DAAM mass ratio is 1 in 0.1 wt%, ADH mass and step (2).
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| CN109824818A (en) * | 2019-01-18 | 2019-05-31 | 郑州中科新兴产业技术研究院 | A kind of core-shell structure ambient self cross-linkable acrylic emulsion of multiple cross-linked modification and preparation method thereof |
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Application publication date: 20191008 |