Rain night type road marking paint

Abstract

The application discloses a rain night type road marking paint. The road marking paint is prepared from the following raw material components in parts by weight: modified acrylic emulsion 50-80 parts, polyvinylpyrrolidone 30-50 parts, curing agent 8-15 parts, wear-resistant agent 5-8 parts, glass microbead 30-50 parts, potassium feldspar powder 10-20 parts, antioxidant 3-5 parts, dispersing agent 3-6 parts, anti-sedimentation agent 3-5 parts, drying catalyst 1-3 parts, and toughening agent 2-5 parts. The road marking paint prepared by the application has good reflection performance in rain night and daytime; the combination use of the glass microbead and the potassium feldspar powder improves the retroreflective coefficient of the material; the combination use of the adipic dihydrazide and 3,3',4,4'-benzophenonetetracarboxylic dianhydride reduces the drying time; and the combination use of (3,3,3-trifluoropropyl)trimethoxysilane and potassium hexatitanate whisker improves the wear resistance of the material.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of road marking paint, and particularly relates to a rain night type road marking paint and a preparation method thereof. BACKGROUND

[0002] The most important feature of analyzing the national road traffic accident situation is that the death toll caused by other conditions is decreasing compared with the same period, and the death toll caused by adverse weather is increasing compared with the same period, especially the road traffic accidents caused by rain, snow, fog and other adverse weather conditions.

[0003] The accidents caused by adverse weather are obviously on the rise, thereby posing a more severe problem to the visibility of traffic markings. In rainy and foggy weather, the surface of the marking is wet, the retroreflective luminance coefficient of ordinary glass beads is almost zero, and the marking cannot give a clear indication to the traffic participants, thereby causing traffic accidents. The current rain night marking mainly includes the following four types: vibration marking, ceramic bead rain night road marking, water-based paint retroreflective marking and two-component rain night retroreflective marking. The vibration marking has a protruding part on the surface, when the driver deviates from the driving track and presses the marking, the vehicle body will vibrate and emit noise, thereby giving the driver a warning in the aspects of vision, hearing and touch. However, the regular structure characteristics of the vibration marking cause the light to be unable to return to the driver's field of view due to the directional effect of the return reflection when the driver passes through the curved place, and finally cause the retroreflective effect of the marking to fail. The ceramic bead rain night road marking is a new type of marking form using ceramic beads to replace the traditional ordinary glass beads. The ceramic bead rain night road marking can achieve a retroreflective distance of more than 100 m, and ensure that the driver has enough reaction distance. However, this kind of glass beads has obvious shortcomings, that is, only in the wet environment, the glass beads can retroreflect, and in the dry condition, the glass beads cannot retroreflect. Therefore, in the actual use process, ordinary glass beads need to be doped, but the result of the doping is that the retroreflective effect is weakened compared with the single-component retroreflective material in both rainy and dry weather.

[0004] The hot melt paint mainly based on petroleum resin and the solvent type paint mainly based on acrylic resin still occupy a large market share in China. However, due to the high cost and the harm to human body and environment, the two kinds of paints do not conform to the concept of environmental friendliness. The water-based paint without toxicity and pollution becomes the development direction of rain line paint. In addition, due to the super strong adhesion between the water-based paint and the glass beads, larger glass beads can be used, thereby ensuring the retroreflectivity and durability of the road marking. However, the current water-based paint has the problems of poor weather resistance, long drying time and easy dirt sticking. SUMMARY

[0005] The application aims to provide a rain night type road marking paint and a preparation method thereof.

[0006] A rain night type road marking paint is made of the following raw material components in parts by weight: modified acrylic emulsion 50-80 parts, polyvinyl pyrrolidone 30-50 parts, curing agent 8-15 parts, wear-resistant agent 5-8 parts, glass microbeads 30-50 parts, potassium feldspar powder 10-20 parts, antioxidant 3-5 parts, dispersing agent 3-6 parts, anti-settling agent 3-5 parts, drying catalyst 1-3 parts, toughening agent 2-5 parts.

[0007] The preparation method of the modified acrylic emulsion is as follows: take 20-30 parts of hydroxyethyl acrylate, 10-15 parts of methyl methacrylate and 2-5 parts of methacrylic acid by weight, mix and stir uniformly, add 10-20 parts of diphenylmethane diisocyanate, continue stirring for 1-3 hours, add 30-50 parts of deionized water and 1-3 parts of sodium vinyl sulfonate, stir for 30-40 minutes to obtain an emulsion, add 2-5 parts of ammonium persulfate, heat to 80-85 DEG C and react for 40-50 minutes to obtain the modified acrylic emulsion.

[0008] The curing agent is a mixture of hexanoic dihydrazide and 3,3',4,4'-benzophenone tetracarboxylic dianhydride in a mass ratio of 1:1.

[0009] The wear-resistant agent is a mixture of (3,3,3-trifluoropropyl) trimethoxysilane and potassium hexatitanate whisker in a mass ratio of 2:1.

[0010] The antioxidant is one or more of antioxidant 501, antioxidant 1010, antioxidant 626 and phosphite ester.

[0011] The dispersing agent is one or more of zinc stearate, magnesium stearate, sodium allyloxy hydroxypropyl sulfonate and methacrylate phosphate glycol.

[0012] The anti-settling agent is one or more of bentonite, silicon dioxide and N,N-methylene (ethyl) bisacrylamide.

[0013] The drying catalyst is one or more of zirconium naphthenate, zinc naphthenate and manganese naphthenate.

[0014] The toughening agent is one or more of liquid butyl nitrile rubber, methacrylate (vinyl) end group butadiene, butadiene-acrylonitrile and polyvinyl butyral.

[0015] The preparation method of the rain night type road marking paint comprises the following steps: mixing modified acrylic emulsion 50-80 parts, polyvinyl pyrrolidone 30-50 parts, curing agent 8-15 parts, wear-resistant agent 5-8 parts, potassium feldspar powder 10-20 parts, antioxidant 3-5 parts, dispersing agent 3-6 parts, anti-sedimentation agent 3-5 parts, drying agent 1-3 parts and toughening agent 2-5 by weight, grinding to obtain a mixed solution after dispersion, and using the mixed solution to coat and then uniformly spread glass beads 30-50 parts.

[0016] The rain night type road marking paint prepared by the method has good reflection performance in rain night and daytime, the combination of glass beads and potassium feldspar powder improves the retroreflective coefficient of the material, the combination of hexanediohydrazide and 3,3',4,4'-benzophenonetetracarboxylic dianhydride reduces the drying time, and the combination of (3,3,3-trifluoropropyl)trimethoxysilane and potassium hexatitanate whisker improves the wear resistance of the material. DETAILED DESCRIPTION

[0017] In order to facilitate the understanding of the present application, the present application will be described more fully below. However, the present application can be realized in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0018] Example 1

[0019] A rain night type road marking paint is prepared from the following components by weight: modified acrylic emulsion 60 parts, polyvinyl pyrrolidone 40 parts, curing agent 12 parts, wear-resistant agent 6 parts, glass beads 40 parts, potassium feldspar powder 15 parts, antioxidant 1010 4 parts, zinc stearate 5 parts, silicon dioxide 4 parts, zirconium naphthenate 2 parts, methyl methacrylate (vinyl) end group butadiene 3 parts; the curing agent is a mixture of hexanediohydrazide and 3,3',4,4'-benzophenonetetracarboxylic dianhydride in a mass ratio of 1:1; the wear-resistant agent is a mixture of (3,3,3-trifluoropropyl)trimethoxysilane and potassium hexatitanate whisker in a mass ratio of 2:1;

[0020] The preparation method of the modified acrylic emulsion comprises the following steps: taking hydroxyethyl acrylate 25 parts, methyl methacrylate 12 parts and methyl methacrylate 3 parts by weight, mixing and stirring uniformly, adding diphenylmethane diisocyanate 15 parts, continuing to stir for 2 h, adding deionized water 40 parts and sodium vinyl sulfonate 2 parts, stirring for 35 min to obtain an emulsion, adding ammonium persulfate 3 parts, heating to 82℃, and reacting for 45 min to obtain the modified acrylic emulsion.

[0021] The preparation method of the rain night type road marking paint is as follows: 60 parts of modified acrylic emulsion, 40 parts of polyvinyl pyrrolidone, 12 parts of curing agent, 6 parts of wear-resistant agent, 15 parts of potassium feldspar powder, 4 parts of antioxidant 1010, 5 parts of zinc stearate, 4 parts of silicon dioxide, 2 parts of zirconium naphthenate, and 3 parts of methyl methacrylate (vinyl) end group butadiene are mixed, and the mixture is ground after dispersion to obtain a mixed solution; when used, the mixed solution is coated first, and then 40 parts of glass microbeads are uniformly scattered.

[0022] Example 2

[0023] A rain night type road marking paint is made from the following raw material components by weight: 50 parts of modified acrylic emulsion, 30 parts of polyvinyl pyrrolidone, 8 parts of curing agent, 5 parts of wear-resistant agent, 30 parts of glass microbeads, 10 parts of potassium feldspar powder, 3 parts of antioxidant 501, 3 parts of sodium allyloxy hydroxypropyl sulfonate, 3 parts of bentonite, 1 part of zinc naphthenate, and 2 parts of liquid butyl nitrile rubber; the curing agent is a mixture of adipic dihydrazide and 3,3',4,4'-benzophenone tetracarboxylic dianhydride in a mass ratio of 1:1; the wear-resistant agent is a mixture of (3,3,3-trifluoropropyl) trimethoxysilane and potassium titanate whisker in a mass ratio of 2:1.

[0024] The preparation method of the modified acrylic emulsion is as follows: 20 parts of hydroxyethyl acrylate, 10 parts of methyl methacrylate, and 2 parts of methyl methacrylate are mixed and uniformly stirred, 10 parts of diphenylmethane diisocyanate is added, and stirring is continued for 1 h, 30 parts of deionized water and 1 part of sodium vinyl sulfonate are added, and stirring is continued for 30 min to obtain an emulsion, 2 parts of ammonium persulfate is added, the temperature is raised to 80℃, and reaction is carried out for 40 min to obtain the modified acrylic emulsion.

[0025] The preparation method of the rain night type road marking paint is as follows: 50 parts of modified acrylic emulsion, 30 parts of polyvinyl pyrrolidone, 8 parts of curing agent, 5 parts of wear-resistant agent, 10 parts of potassium feldspar powder, 3 parts of antioxidant 501, 3 parts of sodium allyloxy hydroxypropyl sulfonate, 3 parts of bentonite, 1 part of zinc naphthenate, and 2 parts of liquid butyl nitrile rubber are mixed, and the mixture is ground after dispersion to obtain a mixed solution; when used, the mixed solution is coated first, and then 30 parts of glass microbeads are uniformly scattered.

[0026] Example 3

[0027] The rain night type road marking paint is prepared from the following raw material components in parts by weight: modified acrylic emulsion 80 parts, polyvinyl pyrrolidone 50 parts, curing agent 15 parts, wear-resistant agent 8 parts, glass microbead 50 parts, potassium feldspar powder 20 parts, phosphite 5 parts, allyloxy hydroxypropyl sodium sulfonate 6 parts, N,N-methylene (ethyl) bisacrylamide 5 parts, manganese naphthenate 3 parts, polyvinyl butyral 5 parts; the curing agent is a mixture of adipic dihydrazide and 3,3',4,4'-benzophenone tetracarboxylic dianhydride in a mass ratio of 1:1; and the wear-resistant agent is a mixture of (3,3,3-trifluoropropyl) trimethoxysilane and potassium hexatitanate whisker in a mass ratio of 2:1.

[0028] The preparation method of the modified acrylic emulsion comprises the following steps: taking acrylic acid hydroxyethyl ester 30 parts, methyl methacrylate 15 parts, and methacrylic acid 5 parts, mixing and stirring uniformly, adding diphenylmethane diisocyanate 20 parts, continuously stirring for 3 hours, adding deionized water 50 parts and sodium vinyl sulfonate 3 parts, stirring for 40 minutes to obtain an emulsion, adding ammonium persulfate 5 parts, heating to 85 DEG C, and reacting for 50 minutes to obtain the modified acrylic emulsion.

[0029] The preparation method of the rain night type road marking paint comprises the following steps: taking modified acrylic emulsion 80 parts, polyvinyl pyrrolidone 50 parts, curing agent 15 parts, wear-resistant agent 8 parts, potassium feldspar powder 20 parts, phosphite 5 parts, allyloxy hydroxypropyl sodium sulfonate 6 parts, N,N-methylene (ethyl) bisacrylamide 5 parts, manganese naphthenate 3 parts, and polyvinyl butyral 5 parts, mixing and grinding to obtain a mixed solution after dispersion; and using the mixed solution to coat and then uniformly spreading glass microbead 50 parts.

[0030] Comparative Example 1

[0031] The rain night type road marking paint is prepared from the following raw material components in parts by weight: modified acrylic emulsion 60 parts, polyvinyl pyrrolidone 40 parts, adipic dihydrazide 12 parts, wear-resistant agent 6 parts, glass microbead 40 parts, potassium feldspar powder 15 parts, antioxidant 1010 4 parts, zinc stearate 5 parts, silicon dioxide 4 parts, zirconium naphthenate 2 parts, and methyl methacrylate (vinyl) end group butadiene 3 parts; the wear-resistant agent is a mixture of (3,3,3-trifluoropropyl) trimethoxysilane and potassium hexatitanate whisker in a mass ratio of 2:1.

[0032] The preparation method of the modified acrylic emulsion comprises the following steps: taking acrylic acid hydroxyethyl ester 25 parts, methyl methacrylate 12 parts, and methacrylic acid 3 parts, mixing and stirring uniformly, adding diphenylmethane diisocyanate 15 parts, continuously stirring for 2 hours, adding deionized water 40 parts and sodium vinyl sulfonate 2 parts, stirring for 35 minutes to obtain an emulsion, adding ammonium persulfate 3 parts, heating to 82 DEG C, and reacting for 45 minutes to obtain the modified acrylic emulsion.

[0033] The preparation method of the rain night type road marking paint is as follows: 60 parts of modified acrylic emulsion, 40 parts of polyvinyl pyrrolidone, 12 parts of hexanoic acid dihydrazide, 6 parts of wear-resistant agent, 15 parts of potassium feldspar powder, 4 parts of antioxidant 1010, 5 parts of zinc stearate, 4 parts of silicon dioxide, 2 parts of zirconium naphthenate, and 3 parts of methyl methacrylate (vinyl) end group butadiene are mixed and grinded after dispersion to obtain a mixed solution; when used, the mixed solution is coated first, and then 40 parts of glass microbeads are uniformly scattered.

[0034] Comparative Example 2

[0035] A rain night type road marking paint is made from the following raw material components by weight: 60 parts of modified acrylic emulsion, 40 parts of polyvinyl pyrrolidone, 12 parts of 3,3',4,4'-benzophenone tetracarboxylic dianhydride, 6 parts of wear-resistant agent, 40 parts of glass microbeads, 15 parts of potassium feldspar powder, 4 parts of antioxidant 1010, 5 parts of zinc stearate, 4 parts of silicon dioxide, 2 parts of zirconium naphthenate, and 3 parts of methyl methacrylate (vinyl) end group butadiene; the wear-resistant agent is a mixture of (3,3,3-trifluoropropyl) trimethoxysilane and potassium hexatitanate whiskers in a mass ratio of 2:1;

[0036] The preparation method of the modified acrylic emulsion is as follows: 25 parts of hydroxyethyl acrylate, 12 parts of methyl methacrylate, and 3 parts of methyl methacrylate are mixed and uniformly stirred, 15 parts of diphenylmethane diisocyanate is added, and stirring is continued for 2 hours, 40 parts of deionized water and 2 parts of sodium vinyl sulfonate are added, stirring is performed for 35 minutes, an emulsion is obtained, 3 parts of ammonium persulfate is added, the temperature is raised to 82℃, and reaction is performed for 45 minutes to obtain the modified acrylic emulsion.

[0037] The preparation method of the rain night type road marking paint is as follows: 60 parts of modified acrylic emulsion, 40 parts of polyvinyl pyrrolidone, 12 parts of 3,3',4,4'-benzophenone tetracarboxylic dianhydride, 6 parts of wear-resistant agent, 15 parts of potassium feldspar powder, 4 parts of antioxidant 1010, 5 parts of zinc stearate, 4 parts of silicon dioxide, 2 parts of zirconium naphthenate, and 3 parts of methyl methacrylate (vinyl) end group butadiene are mixed and grinded after dispersion to obtain a mixed solution; when used, the mixed solution is coated first, and then 40 parts of glass microbeads are uniformly scattered.

[0038] Comparative Example 3

[0039] The rain night type road marking paint is prepared from the following raw material components in parts by weight: modified acrylic emulsion 60 parts, polyvinyl pyrrolidone 40 parts, curing agent 12 parts, (3,3,3-trifluoropropyl) trimethoxysilane 6 parts, glass beads 40 parts, potassium feldspar powder 15 parts, antioxidant 1010 4 parts, zinc stearate 5 parts, silicon dioxide 4 parts, zirconium naphthenate 2 parts, methyl methacrylate (vinyl) end group butadiene 3 parts; the curing agent is a mixture of hexanoic acid dihydrazide and 3,3',4,4'-benzophenone tetracarboxylic dianhydride in a mass ratio of 1:1;

[0040] The preparation method of the modified acrylic emulsion is as follows: in parts by weight, take hydroxyethyl acrylate 25 parts, methyl methacrylate 12 parts, and methyl methacrylate 3 parts, mix and stir uniformly, add diphenylmethane diisocyanate 15 parts, continue to stir for 2 hours, add deionized water 40 parts and sodium vinyl sulfonate 2 parts, stir for 35 minutes to obtain an emulsion, add ammonium persulfate 3 parts, heat to 82℃, and react for 45 minutes to obtain the modified acrylic emulsion.

[0041] The preparation method of the rain night type road marking paint is as follows: in parts by weight, take modified acrylic emulsion 60 parts, polyvinyl pyrrolidone 40 parts, curing agent 12 parts, (3,3,3-trifluoropropyl) trimethoxysilane 6 parts, potassium feldspar powder 15 parts, antioxidant 1010 4 parts, zinc stearate 5 parts, silicon dioxide 4 parts, zirconium naphthenate 2 parts, and methyl methacrylate (vinyl) end group butadiene 3 parts, mix and disperse to obtain a mixed solution, which is ground; when used, first apply the mixed solution, and then uniformly sprinkle glass beads 40 parts.

[0042] Comparative Example 4

[0043] The rain night type road marking paint is prepared from the following raw material components in parts by weight: modified acrylic emulsion 60 parts, polyvinyl pyrrolidone 40 parts, curing agent 12 parts, hexatitanate potassium whisker 6 parts, glass beads 40 parts, potassium feldspar powder 15 parts, antioxidant 1010 4 parts, zinc stearate 5 parts, silicon dioxide 4 parts, zirconium naphthenate 2 parts, methyl methacrylate (vinyl) end group butadiene 3 parts; the curing agent is a mixture of hexanoic acid dihydrazide and 3,3',4,4'-benzophenone tetracarboxylic dianhydride in a mass ratio of 1:1;

[0044] The preparation method of the modified acrylic emulsion is as follows: in parts by weight, take hydroxyethyl acrylate 25 parts, methyl methacrylate 12 parts, and methyl methacrylate 3 parts, mix and stir uniformly, add diphenylmethane diisocyanate 15 parts, continue to stir for 2 hours, add deionized water 40 parts and sodium vinyl sulfonate 2 parts, stir for 35 minutes to obtain an emulsion, add ammonium persulfate 3 parts, heat to 82℃, and react for 45 minutes to obtain the modified acrylic emulsion.

[0045] The preparation method of the rain night type road marking paint is mixing modified acrylic emulsion 60 parts, polyvinyl pyrrolidone 40 parts, potassium titanate whisker 12 parts, wear-resistant agent 6 parts, potassium feldspar powder 15 parts, antioxidant 1010 4 parts, zinc stearate 5 parts, silicon dioxide 4 parts, zirconium naphthenate 2 parts, methyl methacrylate (vinyl) end group butadiene 3 parts by weight parts, and grinding after dispersion to obtain a mixed solution; when used, first coat the above mixed solution, and then uniformly sprinkle glass microbeads 40 parts.

[0046] Comparative example 5

[0047] A rain night type road marking paint is made of the following raw material components by weight parts: modified acrylic emulsion 60 parts, polyvinyl pyrrolidone 40 parts, curing agent 12 parts, wear-resistant agent 6 parts, glass microbeads 55 parts, antioxidant 1010 4 parts, zinc stearate 5 parts, silicon dioxide 4 parts, zirconium naphthenate 2 parts, methyl methacrylate (vinyl) end group butadiene 3 parts; the curing agent is a mixture of adipic dihydrazide and 3,3',4,4'-benzophenone tetracarboxylic dianhydride in a mass ratio of 1:1; the wear-resistant agent is a mixture of (3,3,3-trifluoropropyl) trimethoxysilane and potassium titanate whisker in a mass ratio of 2:1;

[0048] The preparation method of the modified acrylic emulsion is as follows: take hydroxyethyl acrylate 25 parts, methyl methacrylate 12 parts, and methyl methacrylate 3 parts by weight parts, mix and stir uniformly, add diphenylmethane diisocyanate 15 parts, continue to stir for 2h, add deionized water 40 parts and sodium vinyl sulfonate 2 parts, stir for 35min to obtain an emulsion, add ammonium persulfate 3 parts, heat to 82℃, and react for 45min to obtain the modified acrylic emulsion.

[0049] The preparation method of the rain night type road marking paint is mixing modified acrylic emulsion 60 parts, polyvinyl pyrrolidone 40 parts, curing agent 12 parts, wear-resistant agent 6 parts, antioxidant 1010 4 parts, zinc stearate 5 parts, silicon dioxide 4 parts, zirconium naphthenate 2 parts, methyl methacrylate (vinyl) end group butadiene 3 parts by weight parts, and grinding after dispersion to obtain a mixed solution; when used, first coat the above mixed solution, and then uniformly sprinkle glass microbeads 55 parts.

[0050] Comparative example 6

[0051] The rain night type road marking paint is prepared from the following raw material components in parts by weight: modified acrylic emulsion 60 parts, polyvinyl pyrrolidone 40 parts, curing agent 12 parts, wear-resistant agent 6 parts, potassium feldspar powder 55 parts, antioxidant 1010 4 parts, zinc stearate 5 parts, silicon dioxide 4 parts, zirconium naphthenate 2 parts, methyl methacrylate (vinyl) end group butadiene 3 parts; the curing agent is a mixture of hexanoic acid dihydrazide and 3,3',4,4'-benzophenone tetracarboxylic dianhydride in a mass ratio of 1:1; the wear-resistant agent is a mixture of (3,3,3-trifluoropropyl)trimethoxysilane and potassium hexatitanate whisker in a mass ratio of 2:1;

[0052] The preparation method of the modified acrylic emulsion is as follows: in parts by weight, take 25 parts of hydroxyethyl acrylate, 12 parts of methyl methacrylate and 3 parts of methacrylic acid, mix and stir uniformly, add 15 parts of diphenylmethane diisocyanate, continue to stir for 2 h, add 40 parts of deionized water and 2 parts of sodium vinyl sulfonate, stir for 35 min to obtain an emulsion, add 3 parts of ammonium persulfate, heat to 82℃, and react for 45 min to obtain the modified acrylic emulsion.

[0053] The preparation method of the rain night type road marking paint is as follows: in parts by weight, take 60 parts of modified acrylic emulsion, 40 parts of polyvinyl pyrrolidone, 12 parts of curing agent, 6 parts of wear-resistant agent, 55 parts of potassium feldspar powder, 4 parts of antioxidant 1010, 5 parts of zinc stearate, 4 parts of silicon dioxide, 2 parts of zirconium naphthenate and 3 parts of methyl methacrylate (vinyl) end group butadiene, mix and grind after dispersion to obtain a mixed solution.

[0054] Experimental example:

[0055] The non-stick dry time (min) of the paint prepared in examples 1-3 and comparative examples 1-2 according to the industry standard JT / T280-2004 road marking paint is determined, and the determination results are shown in Table 1:

[0056] Table 1

[0057]

[0058] Note: * represents P<0.05 compared with the example 1 group

[0059] The wear resistance (mg) of the paint prepared in examples 1-3 and comparative examples 3-4 according to the industry standard JT / T280-2004 road marking paint is determined, and the determination results are shown in Table 2:

[0060] Table 2

[0061]

[0062] Note: * represents P<0.05 compared with the example 1 group

[0063] The paint prepared in Examples 1-3 and Comparative Examples 5-6 was measured for the inverse reflection coefficient (mcd.lx) using the method specified in JT / T 280-2004, and the results are shown in Table 3. -1 .m -2

[0064] Table 3

[0065]

[0066] Note: * represents P < 0.05 compared with Example 1

[0067] The above examples only express several embodiments of the present application, and the description is more specific and detailed, but it should not be understood as limiting the scope of the patent. It should be noted that for ordinary skilled in the art, without departing from the concept of the present application, several modifications and improvements can be made, which are within the scope of the present application. Therefore, the scope of the patent protection of the present application should be subject to the appended claims.​

Claims

1. A rainy night type road marking paint, characterized in that: The invention is prepared from the following raw material components in parts by weight: 50-80 parts of modified acrylic emulsion, 30-50 parts of polyvinyl pyrrolidone, 8-15 parts of curing agent, 5-8 parts of wear-resistant agent, 30-50 parts of glass microspheres, 10-20 parts of potassium feldspar powder, 3-5 parts of antioxidant, 3-6 parts of dispersant, 3-5 parts of anti-settling agent, 1-3 parts of drying agent, and 2-5 parts of toughening agent. The curing agent is a mixture of hexanoic acid dihydrazide and 3,3',4,4'-benzophenone tetracarboxylic dianhydride in a mass ratio of 1:1; The wear-resistant agent is a mixture of (3,3,3-trifluoropropyl)trimethoxysilane and potassium hexatitanate whiskers in a mass ratio of 2:

1.

2. The rainy night type road marking paint according to claim 1, characterized in that: The modified acrylic emulsion is prepared by taking 20-30 parts of hydroxyethyl acrylate, 10-15 parts of methyl methacrylate, and 2-5 parts of methacrylic acid in parts by weight, mixing and stirring evenly, adding 10-20 parts of diphenylmethane diisocyanate, continuing stirring for 1-3 hours, adding 30-50 parts of deionized water and 1-3 parts of sodium vinyl sulfonate, stirring for 30-40 minutes to obtain an emulsion, adding 2-5 parts of ammonium persulfate, heating to 80-85° C., and reacting for 40-50 minutes to obtain the modified acrylic emulsion.

3. The rainy night type road marking paint according to claim 1, characterized in that: The antioxidant is one or more of antioxidant 501, antioxidant 1010, antioxidant 626, and phosphite.

4. The rainy night type road marking paint according to claim 1, characterized in that: The dispersant is one or more of zinc stearate, magnesium stearate, sodium allyloxy hydroxypropyl sulfonate, and methacrylate phosphate diol.

5. The rainy night type road marking paint according to claim 1, characterized in that: The anti-settling agent is one or more of bentonite, silicon dioxide, and N,N-methylene(ethylene)bisacrylamide.

6. The rainy night type road marking paint according to claim 1, characterized in that: The drying agent is one or more of zirconium naphthenate, zinc naphthenate, and manganese naphthenate.

7. The rainy night type road marking paint according to claim 1, characterized in that: The toughening agent is one or more of liquid nitrile rubber, methacrylate (vinyl)-terminated butadiene, butadiene-acrylonitrile, and polyvinyl butyral.

8. The method for preparing the rainy night type road marking paint according to claim 1, characterized in that: According to weight proportions, 50-80 parts of modified acrylic emulsion, 30-50 parts of polyvinyl pyrrolidone, 8-15 parts of curing agent, 5-8 parts of wear-resistant agent, 10-20 parts of potassium feldspar powder, 3-5 parts of antioxidant, 3-6 parts of dispersant, 3-5 parts of anti-settling agent, 1-3 parts of drying agent and 2-5 parts of toughening agent are mixed, dispersed and then ground to obtain a mixed solution; when using, first apply the mixed solution and then evenly sprinkle 30-50 parts of glass microbeads.

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