CN100558829C - A kind of preparation method of putty that sprays - Google Patents
A kind of preparation method of putty that sprays Download PDFInfo
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- CN100558829C CN100558829C CNB2006101161646A CN200610116164A CN100558829C CN 100558829 C CN100558829 C CN 100558829C CN B2006101161646 A CNB2006101161646 A CN B2006101161646A CN 200610116164 A CN200610116164 A CN 200610116164A CN 100558829 C CN100558829 C CN 100558829C
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Abstract
A kind of preparation method of putty that sprays, can spray that putty consists of with the Hydroxylated acrylic resin is component A based and solidifying agent isocyanic ester component B.The weight ratio of A component and B component is 4: 1, and component A and component B pack respectively before spraying, evenly can use by given mixed during use.Hydroxylated acrylic resin base component A is by 35-45 weight % Hydroxylated acrylic resin, 5～10 weight % pigment, and 15～25 weight % fillers, 0.1～0.3 weight % flow agent, 0.3～0.5 weight % rheology control agent and 24～44 weight % organic solvents are formed.Putty spraying paint film appearance is smooth smooth, and ply adhesion is not more than 1 grade, and hardness is not less than 100s, viscosity is not less than 60s, and during thickness 45 ± 5 μ m, 60 ° of specular reflectances are 45～75%, be not more than 0.5 hour 80 ℃ of time of drying, and fineness is not more than 20 μ m and non-volatile content is not less than 55%.
Description
Technical field
The present invention relates to a kind of preparation method of putty that sprays, relate to a kind of preparation method of the double component polyester polyurethane putty that sprays or rather.
Background technology
The putty that can spray is formed and is comprised polyisocyanates and acrylic polyol, has good weathering resistance, is easy to paint application, overcomes shortcomings such as blade coating unfairness, construction trouble.Cover with paint, lacquer, colour wash, etc. goods and have good grinability, have good ply adhesion, anti-stone to hit non-corrosibility and the top coat over-all properties that performance is good, improved metal substrate with all kinds of priming paint, polyacrylic ester polyurethane finish.Recently research and development is quite prosperous.This putty that sprays is extensively used fields such as what automobile, building, electrical appliance and bridge.
Prior art US pat 4,649,623, March3,1987, the composition that has disclosed two components lacquer comprises: acrylic polyol master component (B) and contain the polyisocyanate curing agent (A) of isocyanurate ring.Two component lacquers before use, A component and B component should be mixed, adopt common means such as air-atomizing, no air-atomizing, electrostatic applications and roller coat etc. to be applied on the required substrates coated, the coated thin film that provides has moderate drying property and moderate film performance, adopt 40～100 ℃ of forced dryings can obtain cured film in a short time, the coated thin film of moderate performance also is provided.Coating back 20 ℃ of dry air film performances of placing 7 days of what are: 60 ° of specular reflectances 92～93%, Erichsen number＞7mm, hardness F～F-H level and shock strength 0.5～1.3KJ/m.80 ℃ of dryings of what 30 minutes place that respective value is after 7 days: 60 ° of specular reflectances 90～93%, Erichsen number＞7mm, hardness F～F-H level and shock strength 0.25～1.0KJ/m.See that from above-mentioned performance all remaining what further improves.
Present inventors provide strong, anti-the hitting property of stone of a kind of ply adhesion good, but the preparation method of the putty of paint application.
Summary of the invention
Present inventors have proposed complete new technical scheme to the preparation method that can spray putty.The composition that can spray putty comprises: be component A based and solidifying agent isocyanic ester component B with the Hydroxylated acrylic resin.The weight ratio of A component and B component is 4: 1.A component and B component are packed respectively before paint application, evenly can spray use by given mixed during use.With the Hydroxylated acrylic resin is that component A based is made up of 35～45 weight % Hydroxylated acrylic resins, 5-10 weight % pigment, 15～25 weight % fillers, 0.1～0.3 weight % flow agent, 0.3～0.5 weight % rheology control agent and 24～44 weight % organic solvents.
Hydroxylated acrylic resin is the multipolymer of methacrylic acid hexyl ethyl ester, methyl methacrylate, stearyl acrylate base ester, butyl acrylate and hydroxyethyl acrylate, its second-order transition temperature 〉=60 ℃, number-average molecular weight M
N=7000～10000, acid number 3mgKOH/g, hydroxy radical content 3.2%.
Solidifying agent isocyanic ester component B chooses any one kind of them from tolylene diisocyanate adducts, hexamethylene diisocyanate tripolymer or their mixture that TriMethylolPropane(TMP) addition tolylene diisocyanate obtains.The tolylene diisocyanate adducts here is by 60～85 ℃ of TriMethylolPropane(TMP) whats and tolylene diisocyanate (TDI) dropwise reaction 50～80 minutes, continues reaction 1 hour at 75～85 ℃, is warming up to 115 ℃～125 ℃ again, reacts 1 hour and makes.The hexamethylene diisocyanate tripolymer can directly be bought on market.
Hydroxylated acrylic resin can be consulted prior art USpat4,452,948, june5,1984 disclose the method preparation of embodiment 2, be about to methacrylic acid hexyl ethyl ester, methyl methacrylate, stearyl acrylate base ester, the mixture of butyl acrylate and hydroxyethyl acrylate and azobisisobutyronitrile is added in the xylene solvent that has refluxed, about 3 hours of whole feeding study on period, keep adding after 1 hour residue azobisisobutyronitrile (AZDN) again, back flow reaction to solid content is 60%, through precipitation, filter, dry, obtain performance index Hydroxylated acrylic resin as the aforementioned.Can certainly buy the commercially available prod uses.
The selected pigment of the present invention is to choose any one kind of them from rutile titanium dioxide pigment, high-carbon black pigment.Filler is that density is 2.71g/cm
3Treated carbonates.Flow agent is the propylene liquid acid butyl ester.
Rheology control agent is specific surface area 300m
2The modified gas aerosil.
Solvent for use of the present invention is a dimethylbenzene.
With the Hydroxylated acrylic resin is component A based, via Hydroxylated acrylic resin, part xylene solvent and propylene liquid acid fourth lipoprotein mixture are stirred 10～15min, after progressively adding pigment and filler, being stirred to no powder, add rheology control agent, added remaining dimethylbenzene, high-speed stirring 2～3 hours, then sand milling to fineness is passed through 120 meshes, filters tinning, waits application.
Two components of implementing the present invention's preparation can spray the inter coat that putty has been used the senior Light-duty Vehicle of what, touring car, public transport bus and machine tool.Its quality index is that paint film appearance is smooth smooth, and when 1 grade of the little what of ply adhesion, the not little what 100s of hardness, the not little what 60s of viscosity, thickness were 45 μ m ± 5 μ m, 60 ° of specular reflectances were 45～75%.80 ℃ ± 2 ℃ time of drying little what 0.5 hour, the little what 20 μ m of fineness and the not little what 55% of non-volatile content.
Embodiment
Especially exemplified by example it is described in order to implement the present invention better, but is not limitation of the present invention.
Embodiment 1
With the Hydroxylated acrylic resin is the preparation of component A based:
400g Hydroxylated acrylic resin (62 ℃ of this resin glass temperature, number-average molecular weight M
N=8000, acid number 3mg KOH/g, hydroxy radical content 3.2%) mixture of 260g xylene solvent and 2g propylene liquid acid butyl ester stirred 13 minutes, after then progressively adding 74g rutile titanium dioxide pigment and 200g high reactivity carbonic acid calcium, continuing to be stirred to no powder, add 4g modified gas aerosil and 80g xylene solvent, high-speed stirring 2.5 hours, then sand milling to fineness is passed through 120 meshes, filters tinning, waits application.
400g is the mixing that stirs of component A based and 100g tolylene diisocyanate (TDI) adducts with the hydroxy acrylate, sprayed on the coated article body 80 ℃ of dryings of what 25 minutes with spray gun, paint film appearance is smooth smooth as a result, 0.9 grade of ply adhesion, hardness 100s, viscosity 61s and 60 ° of specular reflectances 60%, fineness 20 μ m, non-volatile matter 56%.
Embodiment 2
Operation steps and embodiment 1 are just the same, and other changes are as follows:
60 ℃ of number-average molecular weight M of 450g second-order transition temperature
N=7000 Hydroxylated acrylic resin, 300g dimethylbenzene, 1g propylene liquid acid butyl ester stirred 10 minutes, progressively added the 100g high-carbon black pigment, and 150g high reactivity carbonic acid calcium adds 3g modified gas aerosil and 140g dimethylbenzene, high-speed stirring 3 hours.
100g hexamethylene diisocyanate tripolymer, 80 ℃ of dryings of what 28 minutes, paint film appearance is smooth smooth as a result, 0.95 grade of ply adhesion, hardness 102s, viscosity 62s, fineness 19 μ m, 55%, 60 ° of specular reflectance 45% of non-volatile matter.
Embodiment 3
Operation steps and embodiment 1 are just the same, and other changes are as follows:
The 350g second-order transition temperature is 61 ℃ of number-average molecular weight M
N=10000 Hydroxylated acrylic resin, 140g dimethylbenzene, 3g propylene liquid acid butyl ester, stirred 15 minutes, and progressively added the 50g rutile titanium dioxide, add 250g high reactivity carbonic acid calcium, add 5g modification gas phase carbon dioxide and 100g dimethylbenzene, high-speed stirring 2 hours.
The mixture of 50g hexamethylene diisocyanate tripolymer and 50g tolylene diisocyanate adducts, 80 ℃ of dryings of what 30 minutes, paint film appearance is smooth smooth as a result, 1 grade of ply adhesion, hardness 101s, viscosity 61 seconds, fineness 18 μ m, 56.5%, 60 ° of specular reflectance 75% of non-volatile matter.
Claims (6)
1, a kind of preparation method of putty that sprays, its feature forms to comprise with the Hydroxylated acrylic resin being component A based and solidifying agent isocyanic ester component B at what, the weight ratio of A component and B component is 4: 1, A component and B component are packed respectively before spraying, evenly can use by given mixed during use; With the Hydroxylated acrylic resin is that component A based is made up of 35～45 weight % Hydroxylated acrylic resins, 5～10 weight % pigment, 15～25 weight % fillers, 0.1～0.3 weight % flow agent propylene liquid acid butyl ester, 0.3～0.5 weight % rheology control agent and 24～44 weight % organic solvent dimethylbenzene; Described Hydroxylated acrylic resin is the multipolymer of methacrylic acid hexyl ethyl ester, methyl methacrylate, stearyl acrylate base ester, butyl acrylate and hydroxyethyl acrylate, and its second-order transition temperature is 60～62 ℃, number-average molecular weight M
N=7000～10000, acid number 3mgKOH/g, hydroxy radical content 3.2%.
2, a kind of preparation method of putty that sprays according to claim 1, its feature are to choose any one kind of them from tolylene diisocyanate adducts, hexamethylene diisocyanate tripolymer or their mixture that TriMethylolPropane(TMP) addition tolylene diisocyanate obtains at the described solidifying agent isocyanic ester of what component B.
3, a kind of preparation method of putty that sprays according to claim 1, its feature is to choose any one kind of them from rutile titanium dioxide pigment, high-carbon black pigment at the described pigment of what.
4, a kind of preparation method of putty that sprays according to claim 1, its feature are that density is 2.71g/cm at the described filler of what
3Treated carbonates.
5, a kind of preparation method of putty that sprays according to claim 1, its feature are that specific surface area is 300m at the described rheology control agent of what
2The modified gas aerosil.
6, a kind of preparation method of putty that sprays according to claim 1, its feature is that component A based is made via following step with the Hydroxylated acrylic resin at what, at first Hydroxylated acrylic resin, part xylene solvent and flow agent propylene liquid acid butyl ester mixture were stirred 10～15 minutes, progressively add pigment and filler, after being stirred to no powder, add rheology control agent, add remaining xylene solvent, high-speed stirring 2～3 hours, then sand milling to fineness is passed through 120 meshes, filter tinning, wait application.
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| CNB2006101161646A CN100558829C (en) | 2006-09-18 | 2006-09-18 | A kind of preparation method of putty that sprays |
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| CN100558829C true CN100558829C (en) | 2009-11-11 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101469247B (en) * | 2007-12-29 | 2011-12-14 | 比亚迪股份有限公司 | Bicomponent polyurethane coating composition, preparation and coating method thereof |
| JP6775876B2 (en) * | 2016-03-31 | 2020-10-28 | 関西ペイント株式会社 | Putty composition and repair painting method using it |
| CN106398368B (en) * | 2016-11-15 | 2019-04-12 | 广州康正高分子材料科技有限公司 | A kind of poly-putty base |
| CN106519771A (en) * | 2016-11-22 | 2017-03-22 | 常州汉科汽车科技有限公司 | Spray type surface filling agent |
| CN109810557A (en) * | 2019-03-05 | 2019-05-28 | 易简 | Aerogel heat-insulating putty and its processing method and construction method |
| CN109836878A (en) * | 2019-03-05 | 2019-06-04 | 易简 | Liquid nano heat preservation putty and its processing method and construction method |
| CN109735159A (en) * | 2019-03-06 | 2019-05-10 | 常州威斯敦粘合材料有限责任公司 | Photovoltaic back bi-component repairing putty and preparation method thereof, application method and application |
| CN113549362A (en) * | 2020-04-26 | 2021-10-26 | 榕珍新材料科技发展(上海)有限公司 | Two-component polyurethane putty for repairing vehicle body coating and application method thereof |
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