CN104693989A - Preparation method for graphene modified polyurethane-epoxy resin waterborne damping coating - Google Patents

Preparation method for graphene modified polyurethane-epoxy resin waterborne damping coating Download PDF

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Publication number
CN104693989A
CN104693989A CN201510138076.5A CN201510138076A CN104693989A CN 104693989 A CN104693989 A CN 104693989A CN 201510138076 A CN201510138076 A CN 201510138076A CN 104693989 A CN104693989 A CN 104693989A
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Prior art keywords
epoxy resin
graphene
modified polyurethane
preparation
graphene modified
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潘晓梅
肖国民
王磊
丁木生
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Southeast University
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Southeast University
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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
    • 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
    • C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
    • C09D175/04—Polyurethanes
    • C09D175/08—Polyurethanes from polyethers
    • C—CHEMISTRY; METALLURGY
    • 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
    • C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
    • C—CHEMISTRY; METALLURGY
    • 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
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/61—Additives non-macromolecular inorganic

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Polyurethanes Or Polyureas (AREA)
  • Paints Or Removers (AREA)

Abstract

The invention provides a preparation method for graphene modified polyurethane-epoxy resin waterborne damping coating. Firstly, oxidized graphene is prepared through a chemical oxidation method. Then, polyurethane prepolymers are prepared by using 4,4'-diphenylmethane diisocyanate and polytetrahydrofuran as monomers, using butanone as a solvent, using dibutyltin dilaurate as a catalyst, using 1,4-butanediol and 2,2-bis(hydroxymethyl) propionic acid as a chain extender and using 1-methyl-2-pyrrolidone as a solvent. Epoxy resin is added, an interpenetrating polymer network is formed, deionized water is used as an emulgator, the oxidized graphene is added and dispersed through ultrasound, the solvents are removed through rotary evaporation, and graphene modified polyurethane-epoxy resin is obtained. The coating effectively combines the advantages of polyurethane and the advantages of epoxy resin; meanwhile, the excellent mechanical properties of graphene are introduced, so that the damping performance, tensile strength and heat stability of the coating are improved effectively.

Description

The preparation method of Graphene modified polyurethane-epoxy resin aqueous damping coating
Technical field
The present invention relates to the preparation method of Graphene modified polyurethane-epoxy resin damping paint.
Background technology
Vibration and noise are inevitable problems caused in machine, main equipment and vehicle operation.This not only can impact machinery equipment itself, and as reduction of service life, running instability etc., these vibrations and noise also can affect to the living environment of people simultaneously.Noise pollution has been listed in one of the world four overall situation problem.Damping paint is a kind of speciality coating with vibration damping, sound insulation and certain stopping property, can be widely used in vibration damping and the noise reduction of aircraft, boats and ships, vehicle and various machinery.Aqueous damping coating has the advantages such as good combination property, the feature of environmental protection be strong.Aqueous damping coating is dispersion medium with water, is filmogen with performance resins, with inorganics prepared by filler.
Urethane is the more damping material of a class development research.The advantage of PAUR system is that abundant diprotic acid, dibasic alcohol polymerization single polymerization monomer are available, therefore, it is possible to organically combine soft section, firmly section according to different service requirements, thus reaches the object of damping material being carried out to molecular designing.Epoxy resin has excellent physical and chemical performance due to it simultaneously, and the advantage such as its cured article has that mechanical property is high, chemical stability good, cure shrinkage is low, electrical insulating property is excellent and processing characteristics is good, be widely used in aerospace, communications and transportation and civilian installation field.If these two kinds of polymkeric substance are introduced same system by graft reaction, these two kinds individual advantages can be got up, the damping paint that processability is more superior.ShoubingChen etc. have prepared urethane-epoxy resin interpenetrating polymer networks, and have studied its damping capacity, find that urethane is introduced in grafting in epoxy-resin systems, its damping capacity can be improved, show that damping factor uprises, wide [the Shoubing Chen et al of damping temperature increasing extent, Damping, Thermal, and MechanicalProperties ofPolycaprolactone-Based PU/EP Graft IPNs:Effects ofComposition andIsocyanate Index, Journal ofMacromolecular Science, 2012:51:83-95].
Graphene is the compact arranged a kind of carbonaceous novel material of monolayer carbon atom, with the mechanical property of its excellence, thermal property, chemical property and the concern of extremely scientific circles.Particularly its mechanical property, if can it can be used as filler to add the mechanical property that greatly can promote polymer materials in polymeric system to.A lot of document and patent report Graphene reinforced composite has been had in world wide.Chinese patent CN103408895 discloses a kind of Graphene epoxy resin composite material: along with the increase introducing Graphene content, the tensile property of matrix material first increases rear reduction, increase maximum when content is 0.5%, higher than the tensile strength of pure epoxy resin by 51.7%, there is good mechanical property.Chinese patent CN104140639 discloses a kind of Graphene/epoxy resin composite material: compared with pure epoxy resin, tensile strength improves 34.9% ~ 124.8%, shock strength improves 15.4% ~ 105.1%, and second-order transition temperature improves 5 DEG C ~ 19 DEG C.
Summary of the invention
Technical problem: for effectively improving the damping capacity of urethane-epoxy resin interpenetrating polymer networks, the present invention proposes the preparation method of a kind of Graphene modified polyurethane-epoxy resin aqueous damping coating, effectively can improve the damping capacity of interpenetrating polymer networks, its thermostability, intensity and toughness can be promoted simultaneously.
Technical scheme: the preparation method of Graphene modified polyurethane-epoxy resin aqueous damping coating of the present invention is achieved through the following technical solutions:
Step 1. take high-purity crystalline flake graphite as raw material, prepares graphene oxide by chemical oxidization method;
Step 2. is with 4,4 '-diphenylmethanediisocyanate and polytetrahydrofuran for monomer, and butanone is solvent, and dibutyl tin dilaurate is catalyzer, 60 ~ 80 DEG C of reaction 1 ~ 3h; With two (methylol) propionic acid of BDO and 2,2-for chainextender, 1-Methyl-2-Pyrrolidone is solvent, and 60 ~ 80 DEG C of reaction 1 ~ 3h, obtain performed polymer; Add epoxy resin, acetone is as solvent 70 ~ 80 DEG C reaction 3 ~ 5h, and form PU-Epoxy interpenetrating polymer networks, deionized water makees emulsifying agent;
The graphene oxide that step 1 obtains by step 3. adds in the emulsion that step 2 obtains, and namely ultrasonic 2 ~ 3h obtains the PU-Epoxy damping paint of Graphene modification.
4, the mol ratio of the hydroxyl summation in the isocyanate group in 4 '-diphenylmethanediisocyanate and polytetrahydrofuran, BDO, 2,2-two (methylol) propionic acid is 1.3 ~ 1.5.
4,4 '-diphenylmethanediisocyanate shared massfraction in performed polymer is 0.3 ~ 0.5.
Described epoxy resin is epoxy resin E-51, epoxy resin E-44.
It is 0.25% ~ 1% that graphene oxide accounts for the massfraction always adding material.
Beneficial effect: the present invention compared with prior art: by the preparation of graphene oxide modified polyurethane-epoxy resin interpenetrating polymer networks, effectively combine the advantage of urethane and epoxy resin two kinds of resins; Simultaneously by the mode that filler is filled, the inorganics that this has excellent mechanical performances by graphene oxide introduces polymeric system.Result improves the damping capacity of resin greatly, thermostability and mechanical property.The method technique is simple, safety, environmentally safe.
Embodiment
Below in conjunction with specific examples, the present invention is further elaborated.
Example 1
1.1, step one: take 2g high-purity crystalline flake graphite in four neck flasks, the 40mL vitriol oil, mechanical stirring, continues to add 8.4g Vanadium Pentoxide in FLAKES and 8.4g over cure diacid potassium, 80 DEG C of reaction 4.5h, and deionized water is washed till neutrality, dry; The preoxidation Graphene of drying is placed in four neck flasks, adds 3mL strong phosphoric acid and the 27mL vitriol oil, slowly add 5g potassium permanganate, 35 DEG C of reaction 2h, ice bath, adds 150mL deionized water, drip 3mL hydrogen peroxide, ultrasonic 2h, is washed till neutral vacuum-drying and namely obtains graphene oxide.
1.2, step 2: 15.996g4,4 '-diphenylmethanediisocyanate, in four neck flasks, take dibutyl tin dilaurate as catalyzer, 20mL butanone as solvent, at N 2as protection gas; add 20g polytetrahydrofuran diol; 60 DEG C of reaction 2h; add 0.787g1,4 '-butyleneglycol and 3.2g dimethylol propionic acid, 60 DEG C of reaction 2h; add 14.44g bisphenol A type epoxy resin; 70 DEG C of reaction 3h, ice bath drips 3.13g triethylamine reaction 30min, slowly drips deionized water and carries out emulsification.
1.3, add 0.57g graphene oxide in emulsion, namely ultrasonic 2h obtains the poly-ammonia ester-epoxy resin damping paint of Graphene modification.
Example 2
2.1, step one: as the step one of above-mentioned example 1;
2.2, step 2: 16.23g4,4 '-diphenylmethanediisocyanate, in four neck flasks, take dibutyl tin dilaurate as catalyzer, 20mL butanone as solvent, at N 2as protection gas; add 20g polytetrahydrofuran diol; 70 DEG C of reaction 2h; add 1.1g1,4 '-butyleneglycol and 3.25g dimethylol propionic acid, 70 DEG C of reaction 2h; add 8.8g bisphenol A type epoxy resin; 70 DEG C of reaction 3h, ice bath drips 2.89g triethylamine reaction 30min, slowly drips deionized water and carries out emulsification.
2.3, add 1.04g graphene oxide in emulsion, namely ultrasonic 2h obtains the urethane-epoxy resin damping paint of Graphene modification.
Example 3
3.1, step one: as the step one of above-mentioned example 1;
3.2, step 2: 12.69g 4,4 '-diphenylmethanediisocyanate, in four-necked bottle, take dibutyl tin dilaurate as catalyzer, 20mL butanone as solvent, at N 2as protection gas; add 20g polytetrahydrofuran diol; 60 DEG C of reaction 2h; add 0.67g1,4 '-butyleneglycol and 2.9g dimethylol propionic acid, 60 DEG C of reaction 2h; add 36.26g bisphenol A type epoxy resin; 70 DEG C of reaction 3h, ice bath drips 4g triethylamine reaction 30min, slowly drips deionized water and carries out emulsification.
3.3, add 0.38g graphene oxide in emulsion, namely ultrasonic 2h obtains the urethane-epoxy resin damping paint of Graphene modification.
Example 4
4.1, step one: as the step one of above-mentioned example 1;
4.2, step 2: 16.23g4,4 '-diphenylmethanediisocyanate, in four neck flasks, take dibutyl tin dilaurate as catalyzer, 20mL butanone as solvent, at N 2as protection gas; add 20g polytetrahydrofuran diol; 70 DEG C of reaction 2h; add 1.1g1,4 '-butyleneglycol and 3.25g dimethylol propionic acid, 70 DEG C of reaction 2h; add 8.8g bisphenol A type epoxy resin; 70 DEG C of reaction 3h, ice bath drips 2.89g triethylamine reaction 30min, slowly drips deionized water and carries out emulsification.
4.3, add 0.26g graphene oxide in emulsion, namely ultrasonic 2h obtains the urethane-epoxy resin damping paint of Graphene modification.

Claims (5)

1. a preparation method for Graphene modified polyurethane-epoxy resin aqueous damping coating, is characterized in that the concrete steps of the method are as follows:
Step 1. take high-purity crystalline flake graphite as raw material, prepares graphene oxide by chemical oxidization method;
Step 2. is with 4,4 '-diphenylmethanediisocyanate and polytetrahydrofuran for monomer, and butanone is solvent, and dibutyl tin dilaurate is catalyzer, 60 ~ 80 DEG C of reaction 1 ~ 3h; With two (methylol) propionic acid of BDO and 2,2-for chainextender, 1-Methyl-2-Pyrrolidone is solvent, and 60 ~ 80 DEG C of reaction 1 ~ 3h, obtain performed polymer; Add epoxy resin, acetone is as solvent 70 ~ 80 DEG C reaction 3 ~ 5h, and form PU-Epoxy interpenetrating polymer networks, deionized water makees emulsifying agent;
The graphene oxide that step 1 obtains by step 3. adds in the emulsion that step 2 obtains, and namely ultrasonic 2 ~ 3h obtains the PU-Epoxy damping paint of Graphene modification.
2. the preparation method of Graphene modified polyurethane-epoxy resin aqueous damping coating according to claim 1, it is characterized in that, 4, isocyanate group in 4 '-diphenylmethanediisocyanate and polytetrahydrofuran, 1, the mol ratio of the hydroxyl summation in 4-butyleneglycol, 2,2-two (methylol) propionic acid is 1.3 ~ 1.5.
3. the preparation method of Graphene modified polyurethane-epoxy resin aqueous damping coating according to claim 1, is characterized in that, 4, and 4 '-diphenylmethanediisocyanate shared massfraction in performed polymer is 0.3 ~ 0.5.
4. the preparation method of Graphene modified polyurethane-epoxy resin aqueous damping coating according to claim 1, is characterized in that, described epoxy resin is epoxy resin E-51, epoxy resin E-44.
5. the preparation method of Graphene modified polyurethane-epoxy resin aqueous damping coating according to claim 1, is characterized in that, it is 0.25% ~ 1% that graphene oxide accounts for the massfraction always adding material.
CN201510138076.5A 2015-03-26 2015-03-26 Preparation method for graphene modified polyurethane-epoxy resin waterborne damping coating Pending CN104693989A (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104910791A (en) * 2015-06-29 2015-09-16 东南大学 Preparation method of graphene modified polyurethane-epoxy resin water-based damping paint
CN105237730A (en) * 2015-10-09 2016-01-13 滁州环球聚氨酯科技有限公司 Preparation method of heat-resistant heat-conduction polyurethane material
CN105237723A (en) * 2015-10-09 2016-01-13 滁州环球聚氨酯科技有限公司 Preparation method of heat-conduction polyurethane material
CN107663267A (en) * 2017-10-25 2018-02-06 中科院广州化灌工程有限公司 A kind of preparation method of aqueous polyurethane Epoxy Interpenetration Polymer Networks polymer emulsion
CN107974188A (en) * 2017-11-30 2018-05-01 中国船舶重工集团公司第七二五研究所 A kind of damping paint with inierpeneirating network structure and preparation method thereof
CN109293867A (en) * 2018-09-25 2019-02-01 南京林业大学 A kind of high-damping modified polyurethane material and preparation method thereof
CN109608610A (en) * 2018-12-13 2019-04-12 合众（佛山）化工有限公司 A kind of graphene modified aqueous polyurethane-epoxy resin and preparation method thereof
CN112608436A (en) * 2020-12-14 2021-04-06 武汉材料保护研究所有限公司 Polyurethane modified graphene microchip and preparation method thereof
CN116284655A (en) * 2023-01-10 2023-06-23 中威北化科技有限公司 Preparation method of graphene-organosilicon synergistically-reinforced polyurethane grafted modified epoxy resin

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CN103788323A (en) * 2014-01-07 2014-05-14 浙江伟星新型建材股份有限公司 Preparation method of graphene oxide/waterborne polyurethane nano composite

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104910791A (en) * 2015-06-29 2015-09-16 东南大学 Preparation method of graphene modified polyurethane-epoxy resin water-based damping paint
CN105237730A (en) * 2015-10-09 2016-01-13 滁州环球聚氨酯科技有限公司 Preparation method of heat-resistant heat-conduction polyurethane material
CN105237723A (en) * 2015-10-09 2016-01-13 滁州环球聚氨酯科技有限公司 Preparation method of heat-conduction polyurethane material
CN107663267A (en) * 2017-10-25 2018-02-06 中科院广州化灌工程有限公司 A kind of preparation method of aqueous polyurethane Epoxy Interpenetration Polymer Networks polymer emulsion
CN107974188A (en) * 2017-11-30 2018-05-01 中国船舶重工集团公司第七二五研究所 A kind of damping paint with inierpeneirating network structure and preparation method thereof
CN107974188B (en) * 2017-11-30 2020-11-17 中国船舶重工集团公司第七二五研究所 Damping coating with interpenetrating network structure and preparation method thereof
CN109293867A (en) * 2018-09-25 2019-02-01 南京林业大学 A kind of high-damping modified polyurethane material and preparation method thereof
CN109608610A (en) * 2018-12-13 2019-04-12 合众（佛山）化工有限公司 A kind of graphene modified aqueous polyurethane-epoxy resin and preparation method thereof
CN112608436A (en) * 2020-12-14 2021-04-06 武汉材料保护研究所有限公司 Polyurethane modified graphene microchip and preparation method thereof
CN116284655A (en) * 2023-01-10 2023-06-23 中威北化科技有限公司 Preparation method of graphene-organosilicon synergistically-reinforced polyurethane grafted modified epoxy resin
CN116284655B (en) * 2023-01-10 2024-01-09 中威北化科技有限公司 Preparation method of graphene-organosilicon synergistically-reinforced polyurethane grafted modified epoxy resin

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Application publication date: 20150610