CN109266072A

CN109266072A - A kind of low VOC environmental protection coating material and preparation method thereof

Info

Publication number: CN109266072A
Application number: CN201810900247.7A
Authority: CN
Inventors: 苗霞明; 路芸; 卢星
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-08-09
Filing date: 2018-08-09
Publication date: 2019-01-25

Abstract

The invention discloses a kind of low VOC environmental protection coating materials and preparation method thereof, belong to technical field of paint preparation.Initiator is added using butyl acrylate, Isooctyl acrylate monomer as monomer in the present invention, obtains the pure-acrylic emulsion class paint binder of no soap, and green, environmental protection are free of VOC, improve the environmental-protecting performance of film forming；It is that raw material first synthesizes hydroxy-terminated polysiloxane with neopelex, fatty alcohol polyoxyethylene ether, octamethylcy-clotetrasiloxane etc., improves the elasticity and mechanical performance of film, tridimensional network is improved the performance of film；Optimize intercalation modifying sericite under the conditions of being reaction medium as intercalator, dimethyl sulfoxide using cetyl trimethylammonium bromide, obtain Nano type intercalator, powder has certain radius-thickness ratio, first property and elasticity is good, sliding ability is big, tension, compression strength are high, improve the compactness of film and the mechanical property of film forming.The present invention solves current coating and contains VOC mostly, elasticity, the problem of weatherability difference after film forming.

Description

A kind of low VOC environmental protection coating material and preparation method thereof

Technical field

The invention belongs to painting field, a kind of low VOC environmental protection coating material and preparation method thereof is particularly related to.

Background technique

Paint be it is a kind of can securely be covered on body surface, the chemistry for playing protection, decoration, mark and other specific uses is mixed Close object coating.VOC, that is, volatile organic compounds has tremendous influence to human health.When the VOC in room reaches a certain concentration When, people can feel headache, Nausea and vomiting, out of strength etc. in the short time, will appear twitch, stupor when serious, and can hurt people Liver, kidney, brain and nervous system, cause the serious consequences such as failure of memory.Paint is that fitting-up in the process can not Or scarce material.Paint used in decoration design for residence process is one of the main source of indoor VOC.Due to living standard It improves, and environmentally friendly cry grows to even greater heights, requirement of the people to paint for decoration is higher and higher.But paint in the market contains mostly VOC, very big using rear taste, elasticity, the problem of weatherability difference, affect the health of consumer to a certain extent after film forming.When The development of modern coating is made every effort to meet " 4E " principle, i.e. economy, efficiency, ecology, the energy, on the basis of this principle, building coating Product structure could constantly change and perfect.Meanwhile the content of VOC is reduced, to ensure that building coating meets environmental safety The requirement of energy is the general trend of building coating development.In order to cooperate this development trend, health, ring are used there is an urgent need to a kind of The paint to ensure safety.

Summary of the invention

The technical problems to be solved by the invention: contain VOC mostly for current coating, elasticity, weatherability are poor after film forming The problem of, a kind of low VOC environmental protection coating material and preparation method thereof is provided.

In order to solve the above technical problems, the present invention is using technical solution as described below:

A kind of low VOC environmental protection coating material, including paint binder, coating emulsion additive, intercalator；

The preparation method of the paint binder, includes the following steps:

It takes the butyl acrylate 2 ~ 5:1 in mass ratio ~ addition of 4:8 ~ 10 Isooctyl acrylate monomer, deionized water to be stirred, adds The ethoxylated nonylphenol sulfosuccinic acid semiester disodium salt and butyl acrylate quality 30 of butyl acrylate quality 40 ~ 50% ~ 40% 1- allyloxy -3(4- nonyl phenol) -2- propyl alcohol polyoxyethylene (10) ether ammonium sulfate is stirred, and obtains matrix object, it rises Temperature takes matrix object 80 ~ 90:1 in mass ratio ~ 3 that sodium peroxydisulfate is added to 80 ~ 85 DEG C, keeps the temperature 1 ~ 3h, adds base matter amount 2 ~ 4% hydroxyethyl methacrylate, heat preservation adjust pH to 7 ~ 7.2, and filtering takes filtrate to get paint binder.

It is described be added base matter amount 2 ~ 4% hydroxyethyl methacrylate heat-retaining condition are as follows: in 85 ~ 90 DEG C keep the temperature 40 ~ 60min。

The preparation method of the coating emulsion additive, includes the following steps:

(1) it takes neopelex 1 ~ 3:8 in mass ratio ~ 12 that fatty alcohol polyoxyethylene ether mixing is added, obtains mixture, take Deionized water is added in octamethylcy-clotetrasiloxane 1 ~ 3:4 in mass ratio ~ 7, adds octamethylcy-clotetrasiloxane quality 30 ~ 50% Mixture, shearing, obtain cutting object, take cutting object 90 ~ 100:1 in mass ratio ~ 3 be added dodecyl benzene sulfonic acid be stirred, 45 ~ 50 DEG C of adjusting pH to 7 ~ 7.2 are cooled to, is stirred, obtains stirring mixture；

(2) it takes stirring mixture 10 ~ 20:5 in mass ratio ~ 8 that silica solution is added, adds two fourths for being stirred amount of substance 1 ~ 3% Base tin dilaurate tin, is stirred in 10000r/min, must stir mixture a, takes 8 ~ 10:1 ~ 3 in mass ratio stirring mixture a Methyltriethoxysilane is added to be stirred to get coating emulsion additive.

Dodecyl benzene sulfonic acid is added in the step (1) is stirred condition are as follows: it is mixed to be warming up to 80 ~ 85 DEG C of stirrings Close 3 ~ 5h.

The preparation method of the intercalator, includes the following steps:

It takes sericite in 750 ~ 800 DEG C of 50 ~ 60min of heat preservation, is cooled to room temperature, obtains cooled material, take cooled material to be placed in concentration to be In the nitric acid of 5mol/L, in 90 ~ 95 DEG C of 2 ~ 4h of holding, filtering takes filter residue 1 ~ 3:7 in mass ratio ~ 9 that saturated sodium-chloride is added molten Liquid, in 90 ~ 95 DEG C of 2 ~ 4h of holding, filtering takes filter residue a to wash through deionized water, obtains washings, takes washings in mass ratio 3 ~ 8: Cetyl trimethylammonium bromide, deionized water is added in 1 ~ 3:10 ~ 20, is warming up to 75 ~ 80 DEG C, adds washings quality 2 ~ 4 Times dimethyl sulfoxide, be stirred 18 ~ for 24 hours, stand 1 ~ 3h, centrifugation takes precipitating rotary evaporation, washs through deionized water, dry, Up to intercalator.

A kind of preparation method of low VOC environmental protection coating material includes the following steps:

According to the mass fraction, it takes, 150 ~ 200 parts of water, 1 ~ 3 part of nonylphenol polyoxyethylene ether, 2 ~ 5 parts of dispersing agent 8030N, 1 ~ 4 part 2-amino-2-methyl-1-propanol, 2 ~ 4 parts of defoaming agent CF-246,10 ~ 15 parts of ethylene glycol are stirred, and mixed liquor a are obtained, by quality Number meter takes 200 ~ 300 parts of paint binders, 100 ~ 150 parts of coating emulsion additives, 80 ~ 150 parts of intercalators, 50 ~ 70 parts of carboxylic first Base cellulose, 5 ~ 8 parts of acrylic acid, 40 ~ 60 parts of calcined kaolins, 60 ~ 80 parts of diatomite, are stirred 30 ~ 50min, must mix Liquid b takes mixed liquor a 2 ~ 4:1 in mass ratio ~ 3 that mixed liquor b is added, is stirred 2 ~ 4h to get low VOC environmental protection coating material.

The mixed liquor a's is stirred condition are as follows: is warming up to 60 ~ 80 DEG C and is stirred 3 ~ 5h.

The present invention is compared with other methods, and advantageous effects are:

(1) present invention adds ethoxylated nonylphenol sulfosuccinic acid half using butyl acrylate, Isooctyl acrylate monomer as monomer Ester disodium salt, 1- allyloxy -3(4- nonyl phenol) -2- propyl alcohol polyoxyethylene (10) ether ammonium sulfate as compound emulsifying agent into Row compounding, is added initiator, carries out initiation polymerization, obtain the pure-acrylic emulsion class paint binder of no soap, has green, environmental protection Characteristic improves environmental-protecting performance, butyl acrylate, the acrylic acid of introducing in this, as basement membrane without volatile organic compounds Different monooctyl ester has weatherability, the characteristic of resistance to ag(e)ing, while the glass transition temperature of lotion is substantially reduced, have it is lower at Film temperature can not have to add coalescing agent or plasticizer again in the preparation process of polymer emulsion coatings, improve film forming Environmental-protecting performance；

(2) present invention is that raw material first closes with neopelex, fatty alcohol polyoxyethylene ether, octamethylcy-clotetrasiloxane etc. At hydroxy-terminated polysiloxane, the strand both ends band reactive group hydroxyl of hydroxy-terminated polysiloxane can be with polyfunctional group alcoxyl Base silane carries out condensation reaction and crosslinks, and the crosslinking of linear macromolecule chain reticulates, and is uniformly mixed, adds with silica solution Crosslinking agent methyltriethoxysilane, obtains coating emulsion additive, and silica solution internal structure is siloxanes key, superficial layer by Many silicon oxygen alcohol radicals and hydroxyl are covered, thus have water solubility well, and particle is tiny strong to the penetration of substrate, makes to apply Film has stronger adhesive force, while having carried out preferable reinforcing effect, alkoxy in cross-linking process to environment protection coating additive Hydrolysis can occur in water, generate silicone hydroxyl, polycondensation reaction can occur with the hydroxyl in silica solution, organic segment is introduced In inorganic silicon oxygen film, the elasticity and mechanical performance of film are improved, tridimensional network has carried out structure to coating film forming Filling, so that the performance of film is improved；

(3) optimize under the conditions of the present invention is reaction medium as intercalator, dimethyl sulfoxide using cetyl trimethylammonium bromide and insert The modified sericite of layer, obtains Nano type intercalator, and dimethyl sulfoxide accelerates intercalation to carry out, expand as reaction medium Interlamellar spacing, sericite is in orderly exfoliated state in coating, and sericite mineral can both stop visible light, also can shielding ultraviolet rays and Infra-red radiation, enhances the ageing-resistant performance of film, and powder has certain radius-thickness ratio, therefore its first property and elasticity is good, sliding Ability is big, and tension, compression strength are high, and intercalation improves the compactness of film and the mechanical property of film forming.

Specific embodiment

Paint binder: it takes butyl acrylate 2 ~ 5:1 in mass ratio ~ 4:8 ~ 10 that Isooctyl acrylate monomer, deionized water is added, stirs 30 ~ 40min of mixing is mixed, the ethoxylated nonylphenol sulfosuccinic acid semiester disodium salt of butyl acrylate quality 40 ~ 50% is added With the 1- allyloxy -3(4- nonyl phenol of butyl acrylate quality 30 ~ 40%) -2- propyl alcohol polyoxyethylene (10) ether ammonium sulfate It is stirred 40 ~ 50min, obtains matrix object, is warming up to 80 ~ 85 DEG C, takes matrix object 80 ~ 90:1 in mass ratio ~ 3 that persulfuric acid is added Sodium keeps the temperature 1 ~ 3h, adds the hydroxyethyl methacrylate of base matter amount 2 ~ 4%, in 85 ~ 90 DEG C of 40 ~ 60min of heat preservation, adjusts PH to 7 ~ 7.2, filtering, takes filtrate to get paint binder.

Coating emulsion additive:

(1) it takes neopelex 1 ~ 3:8 in mass ratio ~ 12 that fatty alcohol polyoxyethylene ether mixing is added, obtains mixture, take Deionized water is added in octamethylcy-clotetrasiloxane 1 ~ 3:4 in mass ratio ~ 7, adds octamethylcy-clotetrasiloxane quality 30 ~ 50% Mixture, in 20000r/min shear 20 ~ 30min, obtain cutting object, take cutting object 90 ~ 100:1 in mass ratio ~ 3 be added 12 Alkyl benzene sulphonate is warming up to 80 ~ 85 DEG C and is stirred 3 ~ 5h, is cooled to 45 ~ 50 DEG C of adjusting pH to 7 ~ 7.2, it is stirred 30 ~ 50min obtains stirring mixture；

(2) it takes stirring mixture 10 ~ 20:5 in mass ratio ~ 8 that silica solution is added, adds two fourths for being stirred amount of substance 1 ~ 3% Base tin dilaurate tin, is stirred 1 ~ 3h in 10000r/min, must stir mixture a, take stirring mixture a in mass ratio 8 ~ Methyltriethoxysilane is added in 10:1 ~ 3, is stirred 20 ~ 30min to get coating emulsion additive.

Intercalator: it takes sericite in 750 ~ 800 DEG C of 50 ~ 60min of heat preservation, is cooled to room temperature, obtains cooled material, cooled material is taken to set In the nitric acid that concentration is 5mol/L, in 90 ~ 95 DEG C of 2 ~ 4h of holding, filtering takes filter residue 1 ~ 3:7 in mass ratio ~ 9 that saturation chlorine is added Change sodium solution, in 90 ~ 95 DEG C of 2 ~ 4h of holding, filtering takes filter residue a to wash through deionized water, obtains washings, takes washings by quality Cetyl trimethylammonium bromide, deionized water is added than 3 ~ 8:1 ~ 3:10 ~ 20, is warming up to 75 ~ 80 DEG C, adds detergent 2 ~ 4 times of dimethyl sulfoxide of amount, it is stirred 18 ~ for 24 hours, and 1 ~ 3h is stood, centrifugation takes precipitating rotary evaporation, washs through deionized water, Drying is to get intercalator.

A kind of preparation method of low VOC environmental protection coating material, includes the following steps:

According to the mass fraction, it takes, 150 ~ 200 parts of water, 1 ~ 3 part of nonylphenol polyoxyethylene ether, 2 ~ 5 parts of dispersing agent 8030N, 1 ~ 4 part 2-amino-2-methyl-1-propanol, 2 ~ 4 parts of defoaming agent CF-246,10 ~ 15 parts of ethylene glycol, be warming up to 60 ~ 80 DEG C be stirred 3 ~ 5h obtains mixed liquor a, according to the mass fraction, takes 200 ~ 300 parts of paint binders, 100 ~ 150 parts of coating emulsion additives, 80 ~ 150 Part intercalator, 50 ~ 70 parts of carboxymethyl celluloses, 5 ~ 8 parts of acrylic acid, 40 ~ 60 parts of calcined kaolins, 60 ~ 80 parts of diatomite, stirring Mix 30 ~ 50min, obtain mixed liquor b, take mixed liquor a 2 ~ 4:1 in mass ratio ~ 3 be added mixed liquor b, be stirred 2 ~ 4h to get Low VOC environmental protection coating material.

Paint binder: it takes butyl acrylate 2:1:8 in mass ratio that Isooctyl acrylate monomer, deionized water is added, is stirred 30min adds the ethoxylated nonylphenol sulfosuccinic acid semiester disodium salt and butyl acrylate of butyl acrylate quality 40% 1- allyloxy -3(4- the nonyl phenol of quality 30%) -2- propyl alcohol polyoxyethylene (10) ether ammonium sulfate is stirred 40min, it obtains Matrix object is warming up to 80 DEG C, takes matrix object 80:1 in mass ratio that sodium peroxydisulfate is added, and keeps the temperature 1h, adds base matter amount 2% Hydroxyethyl methacrylate adjust pH to 7 in 85 DEG C of heat preservation 40min, filtering takes filtrate to get paint binder.

Coating emulsion additive:

(1) it takes neopelex 1:8 in mass ratio that fatty alcohol polyoxyethylene ether mixing is added, obtains mixture, take eight first Deionized water is added in basic ring tetrasiloxane 1:4 in mass ratio, adds the mixture of octamethylcy-clotetrasiloxane quality 30%, in 20000r/min shears 20min, obtains cutting object, takes cutting object 90:1 in mass ratio that dodecyl benzene sulfonic acid is added, is warming up to 80 DEG C it is stirred 3h, is cooled to 45 DEG C of adjusting pH to 7, is stirred 30min, obtains stirring mixture；

(2) it takes stirring mixture 10:5 in mass ratio that silica solution is added, adds the dibutyl tin for being stirred amount of substance 1% Cinnamic acid tin is stirred 1h in 10000r/min, must stir mixture a, takes stirring mixture a 8:1 in mass ratio that methyl is added Triethoxysilane is stirred 20min to get coating emulsion additive.

Intercalator: it takes sericite in 750 DEG C of heat preservation 50min, is cooled to room temperature, obtains cooled material, cooled material is taken to be placed in concentration For in the nitric acid of 5mol/L, in 90 DEG C of holding 2h, filtering takes filter residue 1:7 in mass ratio that saturated sodium chloride solution is added, in 90 DEG C 2h is kept, filtering takes filter residue a to wash through deionized water, obtains washings, takes washings 3:1:10 in mass ratio that cetyl is added Trimethylammonium bromide, deionized water are warming up to 75 DEG C, add 2 times of washings quality of dimethyl sulfoxide, are stirred 18h, quiet 1h is set, is centrifuged, is taken precipitating rotary evaporation, washed through deionized water, it is dry to get intercalator.

According to the mass fraction, 150 parts of water, 1 part of nonylphenol polyoxyethylene ether, 2 parts of dispersing agent 8030N, 1 part of 2- amino -2- first are taken Base -1- propyl alcohol, 2 parts of defoaming agent CF-246,10 parts of ethylene glycol, are warming up to 60 DEG C and are stirred 3h, mixed liquor a is obtained, by mass parts Number meter, takes 200 parts of paint binders, 100 parts of coating emulsion additives, 80 parts of intercalators, 50 parts of carboxymethyl celluloses, 5 parts of propylene Acid, 40 parts of calcined kaolins, 60 parts of diatomite, are stirred 30min, obtain mixed liquor b, and mixed liquor a 2:1 in mass ratio is taken to be added Mixed liquor b is stirred 2h to get low VOC environmental protection coating material.

Paint binder: it takes butyl acrylate 5:4:10 in mass ratio that Isooctyl acrylate monomer, deionized water is added, is stirred 40min adds the ethoxylated nonylphenol sulfosuccinic acid semiester disodium salt and butyl acrylate of butyl acrylate quality 50% 1- allyloxy -3(4- the nonyl phenol of quality 40%) -2- propyl alcohol polyoxyethylene (10) ether ammonium sulfate is stirred 50min, it obtains Matrix object is warming up to 85 DEG C, takes matrix object 90:3 in mass ratio that sodium peroxydisulfate is added, and keeps the temperature 3h, adds base matter amount 4% Hydroxyethyl methacrylate adjust pH to 7.2 in 90 DEG C of heat preservation 60min, filtering takes filtrate to get paint binder.

Coating emulsion additive:

(1) it takes neopelex 3:12 in mass ratio that fatty alcohol polyoxyethylene ether mixing is added, obtains mixture, take eight first Deionized water is added in basic ring tetrasiloxane 3:7 in mass ratio, adds the mixture of octamethylcy-clotetrasiloxane quality 50%, in 20000r/min shears 30min, obtains cutting object, takes cutting object 100:3 in mass ratio that dodecyl benzene sulfonic acid is added, is warming up to 85 DEG C it is stirred 5h, is cooled to 50 DEG C of adjusting pH to 7.2, is stirred 50min, obtains stirring mixture；

(2) it takes stirring mixture 20:8 in mass ratio that silica solution is added, adds the dibutyl tin for being stirred amount of substance 3% Cinnamic acid tin is stirred 3h in 10000r/min, must stir mixture a, takes stirring mixture a 10:3 in mass ratio that methyl is added Triethoxysilane is stirred 30min to get coating emulsion additive.

Intercalator: it takes sericite in 800 DEG C of heat preservation 60min, is cooled to room temperature, obtains cooled material, cooled material is taken to be placed in concentration For in the nitric acid of 5mol/L, in 95 DEG C of holding 4h, filtering takes filter residue 3:9 in mass ratio that saturated sodium chloride solution is added, in 95 DEG C 4h is kept, filtering takes filter residue a to wash through deionized water, obtains washings, takes washings 8:3:20 in mass ratio that cetyl is added Trimethylammonium bromide, deionized water are warming up to 80 DEG C, add 4 times of washings quality of dimethyl sulfoxide, are stirred for 24 hours, quiet 3h is set, is centrifuged, is taken precipitating rotary evaporation, washed through deionized water, it is dry to get intercalator.

According to the mass fraction, 200 parts of water, 3 parts of nonylphenol polyoxyethylene ether, 5 parts of dispersing agent 8030N, 4 parts of 2- amino -2- first are taken Base -1- propyl alcohol, 4 parts of defoaming agent CF-246,15 parts of ethylene glycol, are warming up to 80 DEG C and are stirred 5h, mixed liquor a is obtained, by mass parts Number meter, takes 300 parts of paint binders, 150 parts of coating emulsion additives, 150 parts of intercalators, 70 parts of carboxymethyl celluloses, 8 parts of propylene Acid, 60 parts of calcined kaolins, 80 parts of diatomite, are stirred 50min, obtain mixed liquor b, and mixed liquor a 4:3 in mass ratio is taken to be added Mixed liquor b is stirred 4h to get low VOC environmental protection coating material.

Paint binder: it takes butyl acrylate 3:2:9 in mass ratio that Isooctyl acrylate monomer, deionized water is added, is stirred 35min adds the ethoxylated nonylphenol sulfosuccinic acid semiester disodium salt and butyl acrylate of butyl acrylate quality 45% 1- allyloxy -3(4- the nonyl phenol of quality 35%) -2- propyl alcohol polyoxyethylene (10) ether ammonium sulfate is stirred 45min, it obtains Matrix object is warming up to 82 DEG C, takes matrix object 85:2 in mass ratio that sodium peroxydisulfate is added, and keeps the temperature 2h, adds base matter amount 3% Hydroxyethyl methacrylate adjust pH to 7.1 in 87 DEG C of heat preservation 50min, filtering takes filtrate to get paint binder.

Coating emulsion additive:

(1) it takes neopelex 2:11 in mass ratio that fatty alcohol polyoxyethylene ether mixing is added, obtains mixture, take eight first Deionized water is added in basic ring tetrasiloxane 2:5 in mass ratio, adds the mixture of octamethylcy-clotetrasiloxane quality 40%, in 20000r/min shears 25min, obtains cutting object, takes cutting object 95:2 in mass ratio that dodecyl benzene sulfonic acid is added, is warming up to 82 DEG C it is stirred 4h, is cooled to 47 DEG C of adjusting pH to 7.1, is stirred 40min, obtains stirring mixture；

(2) it takes stirring mixture 15:7 in mass ratio that silica solution is added, adds the dibutyl tin for being stirred amount of substance 2% Cinnamic acid tin is stirred 2h in 10000r/min, must stir mixture a, takes stirring mixture a 9:2 in mass ratio that methyl is added Triethoxysilane is stirred 25min to get coating emulsion additive.

Intercalator: it takes sericite in 780 DEG C of heat preservation 55min, is cooled to room temperature, obtains cooled material, cooled material is taken to be placed in concentration For in the nitric acid of 5mol/L, in 92 DEG C of holding 3h, filtering takes filter residue 2:8 in mass ratio that saturated sodium chloride solution is added, in 92 DEG C 3h is kept, filtering takes filter residue a to wash through deionized water, obtains washings, takes washings 5:2:15 in mass ratio that cetyl is added Trimethylammonium bromide, deionized water are warming up to 78 DEG C, add 3 times of washings quality of dimethyl sulfoxide, are stirred 22h, quiet 2h is set, is centrifuged, is taken precipitating rotary evaporation, washed through deionized water, it is dry to get intercalator.

According to the mass fraction, 180 parts of water, 2 parts of nonylphenol polyoxyethylene ether, 3 parts of dispersing agent 8030N, 2 parts of 2- amino -2- first are taken Base -1- propyl alcohol, 3 parts of defoaming agent CF-246,12 parts of ethylene glycol, are warming up to 75 DEG C and are stirred 4h, mixed liquor a is obtained, by mass parts Number meter, takes 250 parts of paint binders, 120 parts of coating emulsion additives, 120 parts of intercalators, 60 parts of carboxymethyl celluloses, 7 parts of propylene Acid, 50 parts of calcined kaolins, 70 parts of diatomite, are stirred 40min, obtain mixed liquor b, and mixed liquor a 3:2 in mass ratio is taken to be added Mixed liquor b is stirred 3h to get low VOC environmental protection coating material.

Comparative example 1: it is essentially identical with the preparation method of embodiment 3, it has only the difference is that lacking paint binder.

Comparative example 2: it is essentially identical with the preparation method of embodiment 3, it has only the difference is that lacking coating emulsion additive.

Comparative example 3: it is essentially identical with the preparation method of embodiment 3, it has only the difference is that lacking intercalator.

Comparative example 4: the environmental protection coating material of company of city of Kunshan production.

Above-described embodiment and the environmental protection coating material of comparative example are subjected to volatile organic in content of beary metal and air respectively Object content and other performance tests are closed, obtain that the results are shown in Table 1.

Table 1:

Detection project

Embodiment 1

Embodiment 2

Embodiment 3

Comparative example 1

Comparative example 2

Comparative example 3

Comparative example 4

Pb/Cd/Hg(mg/kg)

46/32/20

45/32/20

35/25/20

47/34/25

47/33/23

46/34/22

50/35/30

Cr⁶⁺(mg/kg)

33

35

30

36

37

36

40

VOC(g/L)

12

15

10

16

17

19

20

Impact strength (kg.em)

51

53

54

50

48

49

45

Water resistance

62h is not blistering

63h is not blistering

65h is not blistering

58h is not blistering

60h is not blistering

55h is not blistering

50h is not blistering

High-low temperature resistant (600 DEG C of 30min are recycled twice, room temperature 30min)

Coating is lossless

The slight bulge of coating

Coating bulge is serious

In summary, environmental protection coating material effect of the invention is more preferable, is worth of widely use.

Claims

1. a kind of low VOC environmental protection coating material, which is characterized in that including paint binder, coating emulsion additive, intercalator；

The preparation method of the paint binder, includes the following steps:

2. low VOC environmental protection coating material according to claim 1, which is characterized in that the first that base matter amount 2 ~ 4% is added The heat-retaining condition of base hydroxy-ethyl acrylate are as follows: in 85 ~ 90 DEG C of 40 ~ 60min of heat preservation.

3. low VOC environmental protection coating material according to claim 1, which is characterized in that the preparation side of the coating emulsion additive Method includes the following steps:

4. low VOC environmental protection coating material according to claim 3, which is characterized in that detergent alkylate is added in the step (1) Sulfonic acid is stirred condition are as follows: is warming up to 80 ~ 85 DEG C and is stirred 3 ~ 5h.

5. low VOC environmental protection coating material according to claim 1, which is characterized in that the preparation method of the intercalator, including such as Lower step:

6. a kind of preparation method of the low VOC environmental protection coating material as described in claim 1 ~ 5 any one, which is characterized in that the system Preparation Method includes the following steps:

7. the preparation method of low VOC environmental protection coating material according to claim 6, which is characterized in that the stirring of the mixed liquor a Mixing condition are as follows: be warming up to 60 ~ 80 DEG C and be stirred 3 ~ 5h.