CN109593408A - A kind of Cellulose nanocrystal body base water-borne acrylic coatings - Google Patents
A kind of Cellulose nanocrystal body base water-borne acrylic coatings Download PDFInfo
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- CN109593408A CN109593408A CN201710901811.2A CN201710901811A CN109593408A CN 109593408 A CN109593408 A CN 109593408A CN 201710901811 A CN201710901811 A CN 201710901811A CN 109593408 A CN109593408 A CN 109593408A
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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Abstract
A kind of Cellulose nanocrystal body base water-borne acrylic coatings, preparing raw material includes: microcrystalline cellulose powder shape；Ethyl orthosilicate；Aqueous PAA coating, white emulsion shape, main component are acrylic resin, solid content 41.9%；The concentrated sulfuric acid (mass fraction 95%-98%)；Ammonium hydroxide (mass fraction 25%-28%)；Ethyl alcohol mass fraction > 99.7%.For the present invention using CNC as template, TEOS forms nano Si 0 in CNC in situ Polymerization as silicon source, by sol-gal process2CNC/Si0 is prepared in particle2Composite colloid, and the modification by composite colloid applied to aqueous PAA coating, have inquired into influence of the composite colloid to PAA coating interface performance and physical and mechanical property by ESEM, AFM and FT-IR etc., have been concluded that the template effect by CNC, work as CNC/Si02After aqueous PAA coating is added in composite colloid, CNC template promotes Si02It is evenly dispersed in aqueous PAA coating, improve the interface compatibility of Si02 Yu PAA coating, CNC/Si02Intermolecular hydrogen bonding and micro ester group are formd between CNC and PAA in/PAA modified coating.
Description
Technical field
The present invention relates to a kind of coating more particularly to a kind of Cellulose nanocrystal body base water-borne acrylic coatings.
Background technique
The coating variety that acrylate paint has been quickly grown since being the 1970s, mainly by (methyl) acrylate
Monomer is obtained by sudden reaction.Acrylic resin itself have color is shallow, transparency is high, protect light, it is bright it is plentiful, inhaled in infrared region
The features such as zooming in, and have excellent weatherability, corrosion resistance, adhesive force is strong, flexible and monomer is numerous, synthesis be easy, valence
The advantages that lattice are cheap and be used widely.But it is the temperature tolerance due to acrylate polymer, water resistance, grease proofness, ventilative
Property is poor, limits further applying for it.Acrylate paint can be modified with other resins, develop high-performance acrylic acid ester
Coating also becomes a kind of development trend, i.e., has widened the application field of acrylate paint significantly.Organic silicon monomer and its polymerization
Object has the characteristics that excellent water resistance, resistant of high or low temperature, gloss retention, gas permeability.Cellulose nanocrystal body (cellulose
Nanocrystal, CNC) have cheap, renewable, degradable, biocompatibility is high, crystallinity is high, Young's modulus is high,
The good characteristics such as intensity height, specific surface area height, meanwhile, CNC molecular surface contains multiple reactive light bases, therefore, Chang Beiyong
Make templated synthesis CNC base nano composite structural material.
Summary of the invention
The purpose of the invention is to improve the dispersion stabilization of water paint, devise a kind of using Cellulose nanocrystal
Body base water-borne acrylic coatings.
The technical solution adopted by the present invention to solve the technical problems is:
The raw material for preparing of Cellulose nanocrystal body base water-borne acrylic coatings includes: microcrystalline cellulose powder shape；Ethyl orthosilicate；
Aqueous PAA coating, white emulsion shape, main component are acrylic resin, solid content 41.9%；The concentrated sulfuric acid (95 %- of mass fraction
98% )；Ammonium hydroxide (mass fraction 25%-28%)；Ethyl alcohol mass fraction > 99.7%.
The preparation step of Cellulose nanocrystal body base water-borne acrylic coatings are as follows: weigh 5 g MCC and be placed in 150mL conical flask
In, in m CMCC): the sulfuric acid solution that mass fraction is 64% is added in V (sulfuric acid solution)=1g:9.8mL ratio in conical flask
49 mL are stirred until homogeneous dispersion, keep 2h after temperature rises to 45 DEG C；Product after acidolysis is taken out, is added in sediment
It being put into low speed centrifuge and is centrifuged after 10 times of deionized waters, centrifuge speed 4000r/min, centrifugation time is 5 min,
Supernatant liquor is centrifuged repeatedly to become cloudy;Sediment is put into bag filter and is dialysed to system pH=7；Finally by the production after dialysis
Object, which moves into high pressure homogenizer, carries out high-pressure homogeneous processing, and homogenization pressure 80MPa, cycle-index is 5 times, obtains mass fraction
For 0.8% CNC colloid.The CNC for being 0.8% by 96g mass fraction, 43.8 μm of dehydrated alcohols, 46.2 μm of TEOS are sequentially added
In 250mL three-necked flask, it is stirred until homogeneous dispersion；Continue to stir 2 h after temperature rises to 65 DEG C.Then catalyst (ammonia is added
Water) be adjusted to pH=9 of system after, temperature is risen to 80 DEG C；Continue stirring until forming gel to get CNC/Si02Compound adhesive
Body.Same procedure is taken, CNC is not added and sequentially adds the 23.1 anhydrous second of mL TEOS, 21.9mL in 100 mL three-necked flasks
Pure and mild 3.8 mL deionized water prepares single Si02Colloid.It weighs the aqueous PAA coating of 16 g to be placed in 100 mL beakers, claim
Take CNC/ Si0 made from 30g2Composite colloid carries out ultrasonic disperse, ultrasonic power 600W, 15 min of time in Ultrasound Instrument.
After ultrasound, by CNC/ Si02Composite colloid is added in the beaker equipped with PAA coating, is placed in 25 DEG C of water-bath and stirs
1h obtains CNC/Si0: the modified PAA coating of composite colloid.Take same procedure with single CNC and Si02It is modified PAA respectively
Coating is as control.In PAA coating, CNC/ Si02Solid content is the 1%-7% of PAA resin solid quality.CNC and Si02For PAA
The 5% of resin solid quality.Modified coating is coated on glass surface and spontaneously dries film forming, it is 175-190 μm of film thickness, aqueous
Rate 2.5%.
The detecting step of Cellulose nanocrystal body base water-borne acrylic coatings are as follows: environmental scanning electron microscope (ESEM) point
Analysis.By the PAA paint film after before modified using brittle failure after liquid nitrogen frozen, section is after vacuum metallizing with scanning electron microscopic observation paint film
Section and surface topography, acceleration voltage are 20 kV.Atomic force microscope (AFM) analysis.PAA paint film after before modified is made
The sample of about 5 mmX5 mm, is placed on the objective table of atomic force microscope, is scanned observation to it at room temperature.It adopts
With the PAA paint film infrared spectroscopy after the measurement before modified of Fourier infrared spectrograph total reflection method.Each sample scans at room temperature
16 times.Paint viscosity test.Reference GB/T9751.1-2008 " paint and varnish rotational viscometer estimated viscosity part 1:
The cone and plate viscometer operated with high-rate of shear " estimated viscosity.The PAA coating after before modified is ultrasonically treated first, then
After mixing evenly with glass bar, it is tested using digital viscosmeter；It selects suitable rotor and is installed on viscosmeter；It will
Coating pours at test tube to the 2/3 of test tube height, adjusts rotor height to being completely immersed in coating, then adjusts rotor speed measurement
Viscosity.The measurement of coating drying time.It is dry referring to GB/T 1728-1979 " paint film, putty membrane drying time measuring method " measurement coating
The dry time.Surface drying time is measured using fingers-touch method, touches surface of the paint film with finger, if slightly feeling stickness and sticking without coating in hand
Refer to, then it is assumed that surface has been dried, and the time is recorded.
The beneficial effects of the present invention are:
Using CNC as template, TEOS forms nano Si 0 in CNC in situ Polymerization as silicon source, by sol-gal process2Particle,
CNC/ Si0 is prepared2Composite colloid, and composite colloid is applied to the modification of aqueous PAA coating, by ESEM, AFM and
FT-IR etc. has inquired into influence of the composite colloid to PAA coating interface performance and physical and mechanical property, be concluded that by
The template effect of CNC, as CNC/ Si02After aqueous PAA coating is added in composite colloid, CNC template promotes Si02In aqueous PAA
It is evenly dispersed in coating, improve Si02With the interface compatibility of PAA coating, CNC/ Si02In/PAA modified coating CNC and
Intermolecular hydrogen bonding and micro ester group are formd between PAA.Compared to CNC and Si02 CNC/ Si02Composite colloid can improve water
The viscosity and surface drying time of property PAA coating, effectively improve the hardness and adhesive force of aqueous PAA coating.When composite colloid additive amount
When being 5%, CNC/ Si02The viscosity of/PAA modified coating is 480.8mPa, and s, surface drying time is 130 min, is conducive to aqueous
The construction of PAA coating.CNC/ Si02The hardness and adhesive force of/PAA paint film respectively reach 6H and level-one, improve aqueous PAA and apply
The wearability of material.
Specific embodiment
Case study on implementation 1:
The ESEM pattern of aqueous PAA paint film can be seen that little particle there are many pure PAA surface of the paint film dispersions after before modified, this is
Pigment particles and other auxiliary agents in PAA coating；It can see irregular lamellar structure from pure PAA paint film section, piece interlayer is attached
There are many holes, this is because caused by the bubble generated when the disorderly arranged and coating of particle in coating.These holes
In the presence of so that lamella is loose, hardness of paint film is low, wears no resistance macroscopically showing as.After CNC is added in aqueous PAA coating,
There is the squamous texture oriented in CNC/PAA surface of the paint film, and can be seen that CNC/PAA paint film interface from CNC/PAA paint film section
It is made of compact arranged lamella, aligning for these lamellas makes surface of the paint film form squamous texture.This is because CNC
There are light base and sulfonic groups in molecule, are also easy to produce evaporation induced orientation self assembly effect.It is this after PAA coating is added in CNC
Effect is retained, and aligns CNC in aqueous PAA coating, this to align pair to combine with PAA coating
Paint film physical and mechanical property is affected.Si0 is added in PAA: after, Si02/ PAA paint film is similar to pure PAA surface of the paint film,
It is dispersed with little particle, but Si02/ PAA surface of the paint film is also unevenly scattered with some bulky grains.This is because nano Si 02Easily
Reunite, when being added into PAA coating, the bulky grain agglomerated into is dispersed in coating.By Si02/ PAA paint film it is disconnected it is found that
Si02/ PAA paint film interface is dispersed with some macroscopic voids and raised bulky grain, this is because when paint film is sheared, nano Si 02
Reunion bulky grain be pulled out and caused by.This illustrates Si02Embeddable PAA coating simultaneously in conjunction, nano Si 02Reunion,
So that its dispersibility in PAA coating is deteriorated, directly affects Si02The appearance and performance of/PAA modified coating.In aqueous PAA
5% CNC/ Si0 is added in coating2After composite colloid, CNC/Si02The visible equally distributed white fold of/PAA surface of the paint film,
These folds are CNC/ Si02Composite colloid, and in CNC/ Si02On composite colloid again uniform fold white Si02.?
CNC/ Si02/ PAA paint film section CNC/ Si02Composite colloid is aligned in tufted, is uniformly distributed in PAA coating.This says
The template effect of bright CNC improves Si02Dispersibility in PAA coating.
Case study on implementation 2:
The AFM three-dimensional appearance of aqueous PAA paint film is since there are pigment particles and other auxiliary agents, PAA in pure PAA coating after before modified
For surface of the paint film there are many small protrusion, the larger protrusion in red circle is dust granule when paint film spontaneously dries.It is modified using CNC
Afterwards, CNC/PAA paint film becomes relatively smooth, this is because CNC aligning in aqueous PAA coating can be in coating
Grain generates the effect of spatial rearrangement, arranges particle with aligning for CNC, shows more regular smooth surface knot
Structure.Si0 is added in aqueous PAA coating: after, S Si02/ PAA paint film face becomes uneven, Si02Reunion bulky grain is in heaps out
It is existing.As the CNC/ Si0 of the addition 5% in aqueous PEA coating2After composite colloid, from (CNC/ Si02It can be seen in/PAA paint film
Out, Si0: even particle distribution, agglomeration be improved significantly.This further illustrates that the template effect of CNC promotes Si02
It is evenly dispersed in aqueous PAA coating, make CNC/ Si02/ PAA paint film becomes more smooth.
Case study on implementation 3:
The physical and mechanical property viscosity of aqueous PAA coating and surface drying time have the workability of coating important after before modified
Influence.The newborn degree of water-based PAA coating is up to 979.3 mPa, s, and surface drying time is only 60 min, easily flows in construction
Phenomenon is hung, and wet paint film creases easily in the drying process.In pure aqueous PAA coating after the CNC of addition 5%, CNC/PAA is applied
The viscosity of material compares water-based PAA coating with surface drying time and reduces 75.6% respectively and extend 200%, and similarly, coating is glutinous
Spend low, surface drying time is too long, also will appear sagging phenomenon in construction, and film forming is poor, extends construction period.This may be because
There is good compatibility for CNC, pigment particles in the interior friction between acrylic resin, especially acrylic acid white paint can be reduced
Phase mutual friction, so that viscosity be made to reduce.In addition, CNC is that colloid can bring moisture in coating into when with its modified coating, reduce
Paint viscosity increases surface drying time.From table 1 it follows that addition Si02To after water-based PAA coating, Si02/PAA is modified
The surface drying time of coating less, only extends 20 min, but the viscosity of coating increases to 1 compared to the variation of water-based PAA coating
201.5 mPa, s.This is because Si0: it is easy to reunite, interparticle friction in PAA coating is increased after PAA coating is added, makes to stick
Degree increases.Compared to first three groups modified coating, CIIC/ Si0 is added in water-based PAA coating2After composite colloid, CNC/ Si02/
The viscosity and surface drying time of PAA modified coating make moderate progress.From table 1 it follows that with CNC/Si0: composite colloid addition
The increase of amount, CNC/ Si02The viscosity of/PAA modified coating gradually decreases, and surface drying time gradually increases, when composite colloid adds
When amount is 5%, the viscosity of modified coating is 480.8 mPa, and s, for 130 min, this is more for the construction of coating to surface drying time
Suitably.This is because in CNC/ Si02In composite colloid, Si02It is uniformly distributed on CNC, by CNC/ Si02Composite colloid adds
After entering PAA coating, the two has played synergistic effect to the reduction of PAA paint viscosity, and when composite colloid additive amount is excessive, can will
Large quantity of moisture is brought into coating, causes paint viscosity too low, surface drying time is too long.
Hardness and adhesive force are the important parameters for measuring paint film wearability.Hardness is high, and the good paint film of adhesive force is not easy to abrade,
It is good to show as wearability.From table 1 it follows that the hardness of water-based PAA coating is H, adhesive force is level Four, is adhesive force etc.
Minimum in grade test, wearability is poor.After adding CNC in PAA coating, the hardness and adhesive force of CNC/PAA paint film are distinguished
Reach 3H and second level, this may be to enhance painting jointly because of the excellent mechanical property of the CNC and PAA hydrogen bond formed and CNC
The structure of material improves the hardness and adhesive force of coating.And Si0 is added in water-based PAA coating: after, Si02/ PAA paint film
Hardness and adhesive force change complex Si02Though the hardness of/PAA paint film is 3H, the hardness of different location incomplete one
It causes, and adhesive force is only three-level.This is because Si02Disperse unevenly, to cause hardness of paint film inconsistent in PAA coating, it is also right
The adhesive force of paint film has a negative impact.And with CNC/ Si02After the modified water-based PAA coating of composite colloid, CNC/ Si02/
The hardness and adhesive force of PAA paint film increase.With CNC/ Si02The increase of composite colloid additive amount, CNC/ Si02/
The hardness of PAA modified coating increases to 6H by H, and adhesive force is reduced to second level after increasing to level-one by level Four again, works as composite colloid
Additive amount be 5% when, the hardness and adhesive force of modified coating respectively reach 6H and level-one.This is because the template action of CNC makes
Si02It is more evenly dispersed in PAA coating, hardness of paint film is made to be significantly improved, and due to the hydrogen bond of CNC and PAA, ester group
In conjunction with and CNC itself humidification, be greatly enhanced hardness of paint film and adhesive force, but composite colloid additive amount is excessive
When may reunite in coating, so that the hardness of modified coating and adhesive force is had decreasing trend.Therefore, the CNC/ of 5% additive amount
Si02Composite colloid modified water-soluble PAA coating can preferably improve the wearability of coating.
Case study on implementation 4:
Hardness and adhesive force are the important parameters for measuring paint film wearability.Hardness is high, and the good paint film of adhesive force is not easy to abrade, and shows
It is good for wearability.From table 1 it follows that the hardness of water-based PAA coating is H, adhesive force is level Four, is that adhesive force grade is surveyed
Minimum in examination, wearability is poor.After adding CNC in PAA coating, the hardness and adhesive force of CNC/PAA paint film are respectively reached
3H and second level, this may be to enhance coating jointly because of the excellent mechanical property of the CNC and PAA hydrogen bond formed and CNC
Structure improves the hardness and adhesive force of coating.And Si0 is added in water-based PAA coating: after, Si02/ PAA paint film it is hard
Degree and adhesive force change complex Si02Though the hardness of/PAA paint film is 3H, the hardness of different location is not quite identical,
And adhesive force is only three-level.This is because Si02Disperse unevenly, to cause hardness of paint film inconsistent, also to paint in PAA coating
The adhesive force of film has a negative impact.And with CNC/ Si02After the modified water-based PAA coating of composite colloid, CNC/ Si02/PAA
The hardness and adhesive force of paint film increase.With CNC/ Si02The increase of composite colloid additive amount, CNC/ Si02/ PAA changes
The hardness of property coating increases to 6H by H, and adhesive force is increased to after level-one by level Four is reduced to second level again, when the addition of composite colloid
When amount is 5%, the hardness and adhesive force of modified coating respectively reach 6H and level-one.This is because the template action of CNC makes Si02Compared with
To be evenly dispersed in PAA coating, hardness of paint film is made to be significantly improved, and due to CNC in conjunction with the hydrogen bond of PAA, ester group with
And the humidification of CNC itself, it is greatly enhanced hardness of paint film and adhesive force, but may when composite colloid additive amount is excessive
It can reunite in coating, the hardness of modified coating and adhesive force is made to have decreasing trend.Therefore, the CNC/ Si0 of 5% additive amount2It is multiple
The wearability of coating can preferably be improved by closing colloid modified water-soluble PAA coating.
Claims (4)
1. a kind of Cellulose nanocrystal body base water-borne acrylic coatings, preparing raw material includes: microcrystalline cellulose powder shape；Positive silicic acid
Ethyl ester；Aqueous PAA coating, white emulsion shape, main component are acrylic resin, solid content 41.9%；The concentrated sulfuric acid (mass fraction
95 %-98% )；Ammonium hydroxide (mass fraction 25%-28%)；Ethyl alcohol mass fraction > 99.7%.
2. Cellulose nanocrystal body base water-borne acrylic coatings according to claim 1, it is characterized in that Cellulose nanocrystal
The preparation step of body base water-borne acrylic coatings are as follows: weigh 5 g MCC and be placed in 150mL conical flask, by m CMCC): V (sulfuric acid
Solution) 49 mL of sulfuric acid solution that mass fraction is 64% is added in the ratio of=1g:9.8mL in conical flask, it is stirred until homogeneous point
It dissipates, keeps 2h after temperature rises to 45 DEG C；Product after acidolysis is taken out, is put into after 10 times of deionized waters are added in sediment
It is centrifuged in low speed centrifuge, centrifuge speed 4000r/min, centrifugation time is 5 min, is centrifuged repeatedly supernatant liquor
It becomes cloudy;Sediment is put into bag filter and is dialysed to system pH=7；Finally the product after dialysis is moved into high pressure homogenizer
High-pressure homogeneous processing, homogenization pressure 80MPa are carried out, cycle-index is 5 times, obtains the CNC colloid that mass fraction is 0.8%, will
The CNC that 96g mass fraction is 0.8%, 43.8 μm of dehydrated alcohols, 46.2 μm of TEOS are sequentially added in 250mL three-necked flask, are stirred
It is extremely evenly dispersed；Continue to stir 2 h after temperature rises to 65 DEG C, pH=9 that catalyst (ammonium hydroxide) is adjusted to system are then added
Afterwards, temperature is risen to 80 DEG C；Continue stirring until forming gel to get CNC/Si02Composite colloid is taken same procedure, is not added
CNC is added to sequentially add 23.1 mL TEOS, 21.9mL dehydrated alcohols and 3.8 mL deionized water systems in 100 mL three-necked flasks
Standby single Si02Colloid weighs the aqueous PAA coating of 16 g and is placed in 100 mL beakers, weighs CNC/ Si0 made from 30g2It is multiple
Colloid is closed, ultrasonic disperse, ultrasonic power 600W, 15 min of time, after ultrasonic, by CNC/ Si0 are carried out in Ultrasound Instrument2
Composite colloid is added in the beaker equipped with PAA coating, is placed in 25 DEG C of water-bath and stirs 1h, obtain CNC/Si0: composite colloid
Modified PAA coating, takes same procedure with single CNC and Si02Modified PAA coating, which is used as, respectively compares, in PAA coating,
CNC/ Si02Solid content is 1%-7%, CNC and the Si0 of PAA resin solid quality2It is the 5% of PAA resin solid quality, will be modified
Coating afterwards is coated on glass surface natural drying and forms a film, and 175-190 μm of film thickness, moisture content 2.5%.
3. Cellulose nanocrystal body base water-borne acrylic coatings according to claim 1, it is characterized in that Cellulose nanocrystal
The detecting step of body base water-borne acrylic coatings are as follows: the PAA after before modified is painted in environmental scanning electron microscope (ESEM) analysis
Film uses brittle failure after liquid nitrogen frozen, and section is used the section and surface topography of scanning electron microscopic observation paint film after vacuum metallizing, accelerated
Voltage is 20 kV, and the PAA paint film after before modified is made the sample of about 5 mmX5 mm, set by atomic force microscope (AFM) analysis
It is complete using Fourier infrared spectrograph on the objective table of atomic force microscope, being scanned observation to it at room temperature
PAA paint film infrared spectroscopy after bounce technique measurement before modified, each sample scan 16 times at room temperature, paint viscosity test, ginseng
According to GB/T9751.1-2008 " paint and varnish rotational viscometer estimated viscosity part 1: the cone operated with high-rate of shear
Plate viscosmeter " estimated viscosity, the PAA coating after before modified is ultrasonically treated first, then after mixing evenly with glass bar, adopts
It is tested with digital viscosmeter；It selects suitable rotor and is installed on viscosmeter；Coating is poured into test tube to test tube height
At the 2/3 of degree, rotor height is adjusted to being completely immersed in coating, then adjust rotor speed estimated viscosity, coating drying time surveys
It is fixed, coating drying time is measured referring to GB/T 1728-1979 " paint film, putty membrane drying time measuring method ", is surveyed using fingers-touch method
Surface drying time is measured, touches surface of the paint film with finger, if slightly feeling stickness and sticking without coating in finger, then it is assumed that done on surface
It is dry, record the time.
4. Cellulose nanocrystal body base water-borne acrylic coatings according to claim 1, it is characterized in that using CNC as template,
TEOS forms 02 particle of nano Si in CNC in situ Polymerization as silicon source, by sol-gal process, and CNC/ is prepared
Si02 composite colloid, and the modification by composite colloid applied to aqueous PAA coating pass through ESEM, AFM and FT-IR etc. and inquire into
Influence of the composite colloid to PAA coating interface performance and physical and mechanical property, is concluded that the template effect by CNC,
After aqueous PAA coating is added in CNC/ Si02 composite colloid, CNC template promotes Si02 uniformly dividing in aqueous PAA coating
It dissipates, improves the interface compatibility of Si02 Yu PAA coating, formd between CNC and PAA in CNC/ Si02/PAA modified coating
Intermolecular hydrogen bonding and micro ester group can improve the glutinous of aqueous PAA coating compared to CNC and Si02 CNC/ Si02 composite colloid
Degree and surface drying time, effectively improve the hardness and adhesive force of aqueous PAA coating, when composite colloid additive amount is 5%, CNC/
The viscosity of Si02/PAA modified coating is 480.8mPa, and s, surface drying time is 130 min, is conducive to the construction of aqueous PAA coating,
The hardness and adhesive force of CNC/ Si02/PAA paint film respectively reach 6H and level-one, improve the wearability of aqueous PAA coating.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710901811.2A CN109593408A (en) | 2017-09-28 | 2017-09-28 | A kind of Cellulose nanocrystal body base water-borne acrylic coatings |
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| CN201710901811.2A CN109593408A (en) | 2017-09-28 | 2017-09-28 | A kind of Cellulose nanocrystal body base water-borne acrylic coatings |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112409901A (en) * | 2020-11-02 | 2021-02-26 | 东莞质研工业设计服务有限公司 | Waterborne polyurethane coating and preparation method thereof |
| WO2021117662A1 (en) * | 2019-12-09 | 2021-06-17 | 東洋製罐グループホールディングス株式会社 | Cellulose nanocrystal dispersion liquid and cellulose nanocrystal-containing coating liquid |
| CN115537077A (en) * | 2022-11-01 | 2022-12-30 | 南通欣然粉末涂料有限公司 | High-adhesion high-hydrophobicity coating and production process thereof |
-
2017
- 2017-09-28 CN CN201710901811.2A patent/CN109593408A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021117662A1 (en) * | 2019-12-09 | 2021-06-17 | 東洋製罐グループホールディングス株式会社 | Cellulose nanocrystal dispersion liquid and cellulose nanocrystal-containing coating liquid |
| CN112409901A (en) * | 2020-11-02 | 2021-02-26 | 东莞质研工业设计服务有限公司 | Waterborne polyurethane coating and preparation method thereof |
| CN115537077A (en) * | 2022-11-01 | 2022-12-30 | 南通欣然粉末涂料有限公司 | High-adhesion high-hydrophobicity coating and production process thereof |
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Application publication date: 20190409 |