Summary of the invention
In view of this, the object of the present invention is to provide a kind of epoxy coating, epoxy coating provided by the invention has good yellowing resistance and snappiness.
The invention provides a kind of epoxy coating, in weight part, comprising:
The epoxy resin of 60 parts~80 parts;
The reactive thinner of 10 parts~20 parts;
The defoamer of 0.1 part~0.3 part;
The endurable active toughener of 9.9 parts~19.7 parts;
The cycloaliphatic amines modified firming agent of 35 parts~45 parts.
Preferably, described epoxy resin is bisphenol A type epoxy resin.
Preferably, the oxirane value of described epoxy resin is 0.18~0.22.
Preferably, comprise the epoxy resin of 65 parts~75 parts.
Preferably, comprise the cycloaliphatic amines modified firming agent of 38 parts~42 parts.
Preferably, the viscosity of described cycloaliphatic amines modified firming agent is 300 centipoise~500 centipoises.
Preferably, the amine value of described cycloaliphatic amines modified firming agent is 260mgKOH/g~300mgKOH/g.
Preferably, described reactive thinner is alkyl glycidyl ether, phenyl glycidyl ether, propenyl glycidyl ether, ethylene glycol bis glycidyl ether, Resorcinol bisglycidyl ether or neodecanoic acid glycidyl ester.
Preferably, described defoamer is polysiloxane defoamers.
Preferably, described endurable active toughener is aromatic alcohol.
The invention provides a kind of epoxy coating, in weight part, comprising: the epoxy resin of 60 parts~80 parts; The reactive thinner of 10 parts~20 parts; The defoamer of 0.1 part~0.3 part; The endurable active toughener of 9.9 parts~19.7 parts; The cycloaliphatic amines modified firming agent of 35 parts~45 parts.Epoxy coating provided by the invention is solventless epoxy coating, and this epoxy coating has good yellowing resistance; And in epoxy coating provided by the invention, epoxy resin and cycloaliphatic amines modified firming agent interact, form stable chemical nature, the good paint film of color stability, this paint film is molecular chain easy fracture not under ultraviolet irradiation, can not produce coloured group, make epoxy coating provided by the invention there is good yellowing resistance; Meanwhile, described epoxy resin and cycloaliphatic amines modified firming agent interact, and form the good paint film of elasticity, make epoxy coating provided by the invention have good snappiness.Therefore, epoxy coating provided by the invention has good yellowing resistance and snappiness, is difficult for pulverizing, flavescence under ultraviolet irradiation, is conducive to the application of epoxy coating.
Experimental result shows, the paint film forming after epoxy coating application provided by the invention irradiates 100 hours under ultraviolet lamp, and paint film is without difference; The paint film forming after epoxy coating application provided by the invention is carried out to crooked experiment, use the mandrel rod test that diameter is 2mm, paint film is without difference.
In addition, epoxy coating provided by the invention also has the good transparency, higher hardness and time of drying faster; And the smell of epoxy coating provided by the invention is less, safety and environmental protection.Experimental result shows, the transmittance of the paint film forming after epoxy coating application provided by the invention is 60%~75%, and hardness can reach 3H, and surface drying time is 1.2 hours~2 hours, free from extraneous odour.
Embodiment
The invention provides a kind of epoxy coating, in weight part, comprising:
The epoxy resin of 60 parts~80 parts;
The reactive thinner of 10 parts~20 parts;
The defoamer of 0.1 part~0.3 part;
The endurable active toughener of 9.9 parts~19.7 parts;
The cycloaliphatic amines modified firming agent of 35 parts~45 parts.
Epoxy coating provided by the invention is solventless epoxy coating, and this epoxy coating has good yellowing resistance; And in epoxy coating provided by the invention, epoxy resin and cycloaliphatic amines modified firming agent interact, form stable chemical nature, the good paint film of color stability, this paint film is molecular chain easy fracture not under ultraviolet irradiation, can not produce coloured group, make epoxy coating provided by the invention there is good yellowing resistance; Meanwhile, described epoxy resin and cycloaliphatic amines modified firming agent interact, and form the good paint film of elasticity, make epoxy coating provided by the invention have good snappiness.In addition, epoxy coating provided by the invention also has the good transparency, higher hardness and time of drying faster; And the smell of epoxy coating provided by the invention is less, safety and environmental protection.
Epoxy coating provided by the invention comprises the epoxy resin of 60 weight part~80 weight parts; Be preferably 65 weight part~75 weight parts, more preferably 68 weight part~72 weight parts, most preferably are 70 weight parts.In the present invention, described epoxy resin is preferably bisphenol A type epoxy resin.In the present invention, the softening temperature of described epoxy resin is preferably 64 ℃~76 ℃, more preferably 68 ℃~72 ℃.In the present invention, the oxirane value of described epoxy resin is preferably 0.18 equivalent/100 gram~0.22 equivalent/100 gram, and more preferably 0.19 equivalent/100 gram~0.21 equivalent/100 gram, most preferably are 0.2 equivalent/100 gram.In the present invention, the epoxy equivalent (weight) of described epoxy resin be preferably 455 equivalents/gram~555 equivalents/gram, more preferably 480 equivalents/gram~520 equivalents/gram, most preferably be 500 equivalents/gram.In the present invention, the organochlorine in described epoxy resin preferably≤0.005 equivalent/100 gram.In the present invention, the inorganic chlorine in described epoxy resin preferably≤0.0005 equivalent/100 gram.The present invention does not have special restriction to the source of described epoxy resin, adopts the epoxy resin of the mentioned kind of those skilled in the art's resin, can be bought and be obtained by market.In an embodiment of the present invention, the 601c-75 type epoxy resin that described epoxy resin can provide for Jiangsu Miki Chemical Co., Ltd.
In the present invention, the parts by weight of epoxy resin of take are benchmark, and epoxy coating provided by the invention comprises the reactive thinner of 10 weight part~20 weight parts, is preferably 12 weight part~18 weight parts, more preferably 14 weight part~16 weight parts.In the present invention, described reactive thinner can reduce the viscosity of epoxy coating system provided by the invention, and described reactive thinner finally can not remain in the paint film of described epoxy coating, makes the smell of epoxy coating provided by the invention little, safety and environmental protection.In the present invention, described reactive thinner is preferably alkyl glycidyl ether, phenyl glycidyl ether, propenyl glycidyl ether, ethylene glycol bis glycidyl ether, Resorcinol bisglycidyl ether or neodecanoic acid glycidyl ester, more preferably butylglycidyl ether, 12, to tetradecyl glycidyl ether or toluene glycidyl ether, most preferably is 12 to tetradecyl glycidyl ether.In the present invention, the viscosity of described reactive thinner is preferably 6mPas~12mPas, more preferably 8mPas~10mPas.In the present invention, the oxirane value of described reactive thinner is preferably 0.32 equivalent/100 gram~0.35 equivalent/100 gram.The present invention does not have special restriction to the source of described reactive thinner, adopts the reactive thinner of mentioned kind well known to those skilled in the art, can be bought and be obtained by market.In an embodiment of the present invention, described reactive thinner can for Jiangsu jade of the He family Environmental Protection Technology Co., Ltd provide 12 to tetradecyl glycidyl ether (AGE).
In the present invention, the parts by weight of epoxy resin of take are benchmark, and epoxy coating provided by the invention comprises the defoamer of 0.1 weight part~0.3 weight part, is preferably 0.15 weight part~0.25 weight part, more preferably 0.2 weight part.In the present invention, described defoamer can reduce the surface energy of epoxy coating paint film provided by the invention, makes the bubble in paint film more easily move to coating surface, and breaks fast, and excluding air, eliminates the bubble in epoxy coating provided by the invention.In the present invention, described defoamer is preferably polysiloxane defoamers.In the present invention, the preferred > of the boiling point of described defoamer is 300 ℃.In the present invention, the preferred > of the flash-point of described defoamer is 100 ℃.In the present invention, the preferred > of the ignition temperature of described defoamer is 600 ℃.The present invention does not have special restriction to the source of described defoamer, adopts the defoamer of mentioned kind well known to those skilled in the art, can be bought and be obtained by market.In an embodiment of the present invention, the HX2086 type defoamer that described defoamer can provide for China's Chemical Group.
In the present invention, the parts by weight of epoxy resin of take are benchmark, and epoxy coating provided by the invention comprises the endurable active toughener of 9.9 weight part~19.7 weight parts, is preferably 12 weight part~18 weight parts, more preferably 14 weight part~16 weight parts.In the present invention, described endurable active toughener can make epoxy coating provided by the invention have good snappiness.In the present invention, described endurable active toughener is preferably aromatic alcohol, more preferably phenylcarbinol.The present invention does not have special restriction to the source of described endurable active toughener, adopts the endurable active toughener of mentioned kind well known to those skilled in the art, can be bought and be obtained by market.In an embodiment of the present invention, described endurable active toughener can be the phenylcarbinol providing of Shouguang City, Shandong Zi Xu Chemical Co., Ltd..
In the present invention, the parts by weight of epoxy resin of take are benchmark, and epoxy coating provided by the invention comprises the cycloaliphatic amines modified firming agent of 35 weight part~45 weight parts, is preferably 38 weight part~42 weight parts, more preferably 40 weight parts.In the present invention, epoxy resin described in described cycloaliphatic amines modified firming agent and technique scheme interacts, form stable chemical nature, the good paint film of color stability, this paint film is molecular chain easy fracture not under ultraviolet irradiation, can not produce coloured group, make epoxy coating provided by the invention there is good yellowing resistance; And described epoxy resin and the interaction of cycloaliphatic amines modified firming agent, form the good paint film of elasticity, further improved the snappiness of epoxy coating provided by the invention.
In the present invention, the viscosity of described cycloaliphatic amines modified firming agent is preferably 300 centipoise~500 centipoises, and more preferably 350 centipoise~450 centipoises, most preferably are 400 centipoises.In the present invention, the amine value of described cycloaliphatic amines modified firming agent is preferably 260mgKOH/g~300mgKOH/g, and more preferably 270mgKOH/g~290mgKOH/g, most preferably is 280mgKOH/g.The present invention does not have special restriction to the source of described cycloaliphatic amines modified firming agent, adopts the cycloaliphatic amines modified firming agent of mentioned kind well known to those skilled in the art, can be bought and be obtained by market.In an embodiment of the present invention, the A1618 type solidifying agent that described cycloaliphatic amines modified firming agent can provide for US Air gas chemical company.
In the present invention, the parts by weight of epoxy resin of take are benchmark, and epoxy coating provided by the invention preferably also comprises the mill base of 8 weight part~15 weight parts, more preferably 10 weight part~12 weight parts.The present invention does not have special restriction to the kind of described mill base and source, and those skilled in the art can select according to practical situation the mill base of different colours, and described mill base can be bought and be obtained by market.
In the present invention, described in technique scheme, the preparation method of epoxy coating is preferably:
Epoxy resin, reactive thinner, defoamer, endurable active toughener and cycloaliphatic amines modified firming agent are mixed, obtain epoxy coating.
The present invention preferably mixes epoxy resin, reactive thinner, defoamer, endurable active toughener, and the mixture obtaining is mixed with cycloaliphatic amines modified firming agent, obtains epoxy coating.The present invention does not have special restriction to the method for described mixing, the hybrid technology scheme that adopts this area skill personnel to know.In the present invention, described epoxy resin, reactive thinner, defoamer, endurable active toughener and cycloaliphatic amines modified firming agent kind, source and parts by weight are consistent with epoxy resin, reactive thinner, defoamer, endurable active toughener and cycloaliphatic amines modified firming agent kind, source and parts by weight described in technique scheme, do not repeat them here.
The present invention does not have special restriction to the using method of described epoxy coating, adopts the coating process of spraying well known to those skilled in the art, brushing, roller coating or cast.In the present invention, described epoxy coating is preferably now with the current.In the present invention, described epoxy coating was preferably finished using in 2 hours.In the present invention, the ground of described epoxy coating application can be timber, bamboo wood, cement products or metal products.
By the paint film forming after epoxy coating application provided by the invention, under ultraviolet lamp, irradiate 100 hours, detect its yellowing resistance, detected result is that paint film, without difference, shows that epoxy coating provided by the invention has good yellowing resistance.By epoxy coating provided by the invention according to the standard of GB/T6742-2007 < < paint and varnish crooked experiment (cylinder axis) > >, detect its snappiness, detected result is, epoxy coating provided by the invention is used the mandrel rod test that diameter is 2mm, paint film, without difference, shows that epoxy coating provided by the invention has good snappiness.
The portable light transmittance tester of DR81 type that adopts new east station of Guangzhou scholar instrument plant to provide, test the transmittance of the paint film forming after epoxy coating application provided by the invention, test result is, the transmittance of described paint film is 60%~75%, shows that epoxy coating provided by the invention has the good transparency.The hardness that adopts pencil hardness method to test epoxy coating provided by the invention, test result is, and the hardness of epoxy coating provided by the invention is 3H, and hardness is higher.According to the standard of GB/T6753.2-1986 < < coating surface drying experiment ballotini method > >, the time of drying of testing epoxy coating provided by the invention.Test result is, the surface drying time of epoxy coating provided by the invention is 1.2 hours~2 hours, and time of drying is very fast.Operator smell news to epoxy coating provided by the invention, epoxy coating free from extraneous odour provided by the invention, safety and environmental protection.
According to the standard of GB/T6753.3-1986 < < coating storage stability test method > >, test the storage period that epoxy coating provided by the invention does not add cycloaliphatic amines modified firming agent.Test result is that epoxy coating provided by the invention does not add cycloaliphatic amines modified firming agent and can preserve 24 months.
The paint film forming after epoxy coating application provided by the invention is adopted to the sand papering of 240#, test its grinability, test result is that epoxy coating provided by the invention is easily polished.Test the residual of bubble in the paint film that epoxy coating provided by the invention cast forms, concrete grammar is:
Epoxy resin described in technique scheme, defoamer, endurable active toughener and cycloaliphatic amines modified firming agent are mixed, obtain mixture, the parts by weight of described epoxy resin, defoamer, endurable active toughener and cycloaliphatic amines modified firming agent are consistent with the parts by weight of epoxy resin, defoamer, endurable active toughener and cycloaliphatic amines modified firming agent described in technique scheme; It is 5mm, wide in 50mm, the high silica gel mould for 50mm that described mixture is cast in long, and standing depositing 24 hours, obtains pouring into a mould module; Whether observable cast inside modules there is bubble.Test result is that epoxy coating provided by the invention is poured into a mould in the rear paint film forming without bubble.
The invention provides a kind of epoxy coating, in weight part, comprising: the epoxy resin of 60 parts~80 parts; The reactive thinner of 10 parts~20 parts; The defoamer of 0.1 part~0.3 part; The endurable active toughener of 9.9 parts~19.7 parts; The cycloaliphatic amines modified firming agent of 35 parts~45 parts.Epoxy coating provided by the invention is solventless epoxy coating, and this epoxy coating has good yellowing resistance; And in epoxy coating provided by the invention, epoxy resin and cycloaliphatic amines modified firming agent interact, form stable chemical nature, the good paint film of color stability, this paint film is molecular chain easy fracture not under ultraviolet irradiation, can not produce coloured group, make epoxy coating provided by the invention there is good yellowing resistance; Meanwhile, described epoxy resin and cycloaliphatic amines modified firming agent interact, and form the good paint film of elasticity, make epoxy coating provided by the invention have good snappiness.Therefore, epoxy coating provided by the invention has good yellowing resistance and snappiness, is difficult for pulverizing, flavescence under ultraviolet irradiation, is conducive to the application of epoxy coating.In addition, epoxy coating provided by the invention also has the good transparency, higher hardness and time of drying faster; And the smell of epoxy coating provided by the invention is less, safety and environmental protection.
In order further to understand the present invention, below in conjunction with embodiment, epoxy coating provided by the invention is described in detail, but they can not be interpreted as to limiting the scope of the present invention.
Following examples of the present invention raw material used is commercial goods.
Embodiment 1
The 12 A1618 type solidifying agent to the HX2086 type defoamer of tetradecyl glycidyl ether, 0.3g, the phenylcarbinol of 19.7g and 35g of the 601c-75 type epoxy resin of 60g, 20g are mixed, obtain epoxy coating.
According to method described in technique scheme, the epoxy coating that the test embodiment of the present invention 1 provides does not add the storage period of A1618 type solidifying agent, and after the hardness of the epoxy coating that provides of the embodiment of the present invention 1, grinability, the transparency, snappiness, yellowing resistance, surface drying time, smell size and cast, form the residual of bubble in paint film, test result is as shown in table 1, the performance test results of the epoxy coating that table 1 obtains for the embodiment of the present invention and comparative example.
Embodiment 2
The A1618 type solidifying agent of the phenylcarbinol of the HX2086 type defoamer of the toluene glycidyl ether of the 601c-75 type epoxy resin of 80g, 10g, 0.1g, 9.9g and 45g is mixed, obtain epoxy coating.
According to method described in embodiment 1, the performance of the epoxy coating that the test embodiment of the present invention 2 provides, test result is as shown in table 1.
Embodiment 3
The A1618 type solidifying agent of the HX2086 type defoamer of the butylglycidyl ether of the 601c-75 type epoxy resin of 70g, 20g, 0.1g, the phenylcarbinol of 9.9g, the iron oxide red mill base of 10g and 40g is mixed, obtain epoxy coating.
According to method described in embodiment 1, the performance of the epoxy coating that the test embodiment of the present invention 3 provides, test result is as shown in table 1.
Embodiment 4
The 12 A1618 type solidifying agent to the HX2086 type defoamer of tetradecyl glycidyl ether, 0.15g, the phenylcarbinol of 12g and 38g of the 601c-75 type epoxy resin of 75g, 12g are mixed, obtain epoxy coating.
According to method described in embodiment 1, the performance of the epoxy coating that the test embodiment of the present invention 4 provides, test result is as shown in table 1.
Embodiment 5
The 12 A1618 type solidifying agent to the HX2086 type defoamer of tetradecyl glycidyl ether, 0.25g, the phenylcarbinol of 18g and 42g of the 601c-75 type epoxy resin of 65g, 18g are mixed, obtain epoxy coating.
According to method described in embodiment 1, the performance of the epoxy coating that the test embodiment of the present invention 5 provides, test result is as shown in table 1.
Comparative example 1
The BYK057 type defoamer of the E-44 type epoxy resin of 70g, the dimethylbenzene of 12g, the propyl carbinol of 3g, 1g, the phenylcarbinol of 9g and the polyamide 6 of 25g 50 solidifying agent are mixed, obtain epoxy coating.
According to method described in technique scheme, the epoxy coating that testing comparative example 1 of the present invention provides does not add the storage period of polyamide 6 50 solidifying agent, and after the hardness of the epoxy coating that provides of comparative example 1 of the present invention, grinability, the transparency, snappiness, yellowing resistance, surface drying time, smell size and cast, form the residual of bubble in paint film, test result is as shown in table 1, the performance test results of the epoxy coating that table 1 obtains for the embodiment of the present invention and comparative example.
The performance test results of the epoxy coating that table 1 embodiment of the present invention and comparative example obtain
As shown in Table 1, the epoxy coating that the embodiment of the present invention obtains has good yellowing resistance and snappiness, inhibited from yellowing under ultraviolet irradiation, pulverizing; And the epoxy coating that obtains of the embodiment of the present invention also has the good transparency, higher hardness and time of drying faster; The smell of the epoxy coating that simultaneously embodiment of the present invention obtains is less, safety and environmental protection.
As seen from the above embodiment, the invention provides a kind of epoxy coating, in weight part, comprising: the epoxy resin of 60 parts~80 parts; The reactive thinner of 10 parts~20 parts; The defoamer of 0.1 part~0.3 part; The endurable active toughener of 9.9 parts~19.7 parts; The cycloaliphatic amines modified firming agent of 35 parts~45 parts.Epoxy coating provided by the invention is solventless epoxy coating, and this epoxy coating has good yellowing resistance; And in epoxy coating provided by the invention, epoxy resin and cycloaliphatic amines modified firming agent interact, form stable chemical nature, the good paint film of color stability, the molecular chain of paint film easy fracture not under ultraviolet irradiation, can not produce coloured group, make epoxy coating provided by the invention there is good yellowing resistance; Meanwhile, described epoxy resin and cycloaliphatic amines modified firming agent interact, and form the good paint film of elasticity, make epoxy coating provided by the invention have good snappiness.Therefore, epoxy coating provided by the invention has good yellowing resistance and snappiness, is difficult for pulverizing, flavescence under ultraviolet irradiation, is conducive to the application of epoxy coating.In addition, epoxy coating provided by the invention also has the good transparency, higher hardness and time of drying faster; And the smell of epoxy coating provided by the invention is less, safety and environmental protection.
The explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof.It should be pointed out that for the person of ordinary skill of the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of the claims in the present invention.Above-mentioned explanation to the disclosed embodiments, makes the special technician in this area can realize or use the present invention, to the multiple modification of these embodiment, will be apparent concerning professional and technical personnel in the field.General Principle as defined herein can, in the situation that not departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and novel features.