阅读说明：本技术 一种高铁原子灰及其制备方法 (High-iron putty and preparation method thereof ) 是由 吴灿云 于 2019-11-06 设计创作，主要内容包括：本发明属于涂料领域,具体为一种高铁原子灰,包括A组分和B组分,其中A组分包括如下重量百分比组分：聚酯树脂34-38％；分散剂0.4-0.8％；稳定剂0.06-0.1％；稀释剂3-5％；余量的填料。该原子灰的主要创新点在于三元醇、二元醇的复配使用,同时,在顺丁烯二酸酐、四氢苯酐以及优选地气干性单体三羟甲基丙烷二烯丙基醚作用下,能表现出较好的柔韧性和附着力,提高在于高铁上的应用性能。同时,在现有技术中,亚麻油酸是一种优异的原子灰改性剂,在高铁原子灰中,通过配伍饱和脂肪酸肉豆蔻酸可以提高其耐冲击性能。(The invention belongs to the field of coatings, and particularly relates to high-iron putty which comprises a component A and a component B, wherein the component A comprises the following components in percentage by weight: 34-38% of polyester resin; 0.4 to 0.8 percent of dispersant; 0.06 to 0.1 percent of stabilizer; 3-5% of a diluent; the balance of filler. The main innovation point of the putty is the compound use of the trihydric alcohol and the dihydric alcohol, and simultaneously, under the action of the maleic anhydride, the tetrahydrophthalic anhydride and preferably the air-drying monomer trimethylolpropane diallyl ether, the putty can show better flexibility and adhesive force, and the application performance on high-speed rails is improved. Meanwhile, in the prior art, the linoleic acid is an excellent putty modifier, and the impact resistance of the high-iron putty can be improved by matching with the saturated fatty acid myristic acid.)

1. The high-iron atomic ash is characterized by comprising a component A and a component B, wherein the component A comprises the following components in percentage by weight:

34-38% of polyester resin; 0.4 to 0.8 percent of dispersant; 0.06 to 0.1 percent of stabilizer; 3-5% of a diluent; the balance of filler;

the component B is cyclohexanone peroxide;

the weight ratio of the component A to the component B is 100: 2;

the polyester resin is prepared by the following method:

step 1: mixing polybasic acid, polyalcohol and trimethylolpropane diallyl ether, and adding a polymerization inhibitor and an antioxidant;

step 2: esterifying and dehydrating for 1-2h at the temperature of 140 ℃ and 150 ℃;

and step 3: heating to 185-195 ℃, reacting at constant temperature for at least 3h, measuring the acid value, adding linoleic acid and myristic acid when the acid value is 90-100KOH/g, and cooling to 160-165 ℃;

and 4, step 4: heating to 185 ℃, keeping the temperature for at least 2h, measuring the acid value, and starting vacuum-pumping dehydration for 1.5-2h when the acid value is less than or equal to 70 KOH/g;

and 5: adding styrene for dilution, adding an antioxidant, reacting for 1-1.5h, and then cooling to 60-70 ℃;

the molar ratio of the polyhydric alcohol to the polybasic acid is 1-1.05: 1;

the polyol consists of diethylene glycol, 1, 4-cyclohexanedimethanol and glycerol in a weight ratio of 7:2: 1;

the polybasic acid consists of maleic anhydride, tetrahydrophthalic anhydride and isophthalic acid in a weight ratio of 6:3.2-3.5: 0.5-0.8;

the total amount of the linoleic acid and the myristic acid is 8-12% of the total weight of the polybasic acid and the polyhydric alcohol;

the styrene accounts for 30 to 35 percent of the total weight of the polybasic acid and the polyhydric alcohol;

10-15% trimethylolpropane diallyl ether relative to the total weight of the polyacid and the polyol.

2. The high iron putty as set forth in claim 1 wherein the polymerization inhibitor is one or more of hydroquinone, NSI, I-95, TBC, and the polymerization inhibitor is 0.01-0.03% of the total weight of the polybasic acid and the polyhydric alcohol;

the antioxidant used in the step 1 and the step 5 is organic phosphite ester or phenolic antioxidant, and the antioxidant accounts for 0.03-0.1% of the total weight of the polybasic acid and the polyhydric alcohol.

3. The high iron putty as set forth in claim 1 wherein the diluent is styrene.

4. The high iron putty as set forth in claim 1 wherein the filler is talc.

5. The high iron putty as set forth in claim 1 wherein the weight ratio of linoleic acid to myristic acid is 7-8: 2-3.

6. A method for preparing the high iron putty as set forth in any one of claims 1 to 5, characterized by comprising the steps of:

step 1: mixing and dispersing polyester resin, a dispersing agent, a stabilizing agent and a diluting agent;

step 2: adding the filler and continuously dispersing for 0.5-1 h;

and step 3: vacuumizing for 15-30min to obtain the component A.

Technical Field

The invention relates to the field of coatings, in particular to high-iron putty and a preparation method thereof.

Background

CN201611016419.1 discloses a light multifunctional putty and a preparation method thereof, wherein the light multifunctional putty comprises the following components in parts by mass: 30-50 parts of unsaturated resin, 2-6 parts of styrene, 1-2.6 parts of auxiliary agent, 2-8 parts of pigment, 0.5-1.5 parts of accelerator and 38-70 parts of powder; the accelerator is a cobalt salt accelerator, and the pigment is titanium dioxide.

It is knife coating type putty, the flexibility is about 50mm, and the adhesive force is 5-6 MPa.

The company now develops an atomic ash suitable for high-speed rail.

Based on the characteristics of high-frequency and high-speed moving carriers of high-speed rails, the putty is required to show excellent adhesive force and flexibility, so that the coating can be kept stable on a locomotive moving at high speed, and the service life is prolonged. Meanwhile, the quick drying property of the concrete needs to be kept, so that the construction effect is improved.

The technical problem that this application will solve is: provides a high-iron putty which is used for solving the problems of poor adhesive force and poor flexibility of the traditional putty.

Disclosure of Invention

The invention aims to provide high-iron putty, which has the main innovation point that the putty is compounded by using trihydric alcohol and dihydric alcohol, and can show better flexibility and adhesive force under the action of maleic anhydride, tetrahydrophthalic anhydride and preferably air-drying monomer trimethylolpropane diallyl ether, so that the application performance of the high-iron putty on high-iron is improved. Meanwhile, in the prior art, the linoleic acid is an excellent putty modifier, and the impact resistance of the high-iron putty can be improved by matching with the saturated fatty acid myristic acid.

Unless otherwise specified, the percentages and parts in the present invention are in weight percent.

In order to achieve the purpose, the invention provides the following technical scheme:

the high-iron atomic ash comprises a component A and a component B, wherein the component A comprises the following components in percentage by weight:

34-38% of polyester resin; 0.4 to 0.8 percent of dispersant; 0.06 to 0.1 percent of stabilizer; 3-5% of a diluent; the balance of filler;

the component B is cyclohexanone peroxide;

the weight ratio of the component A to the component B is 100: 2;

the polyester resin is prepared by the following method:

step 1: mixing polybasic acid, polyalcohol and trimethylolpropane diallyl ether, and adding a polymerization inhibitor and an antioxidant;

step 2: esterifying and dehydrating for 1-2h at the temperature of 140 ℃ and 150 ℃;

and step 3: heating to 185-195 ℃, reacting at constant temperature for at least 3h, measuring the acid value, adding linoleic acid and myristic acid when the acid value is 90-100KOH/g, and cooling to 160-165 ℃;

and 4, step 4: heating to 185 ℃, keeping the temperature for at least 2h, measuring the acid value, and starting vacuum-pumping dehydration for 1.5-2h when the acid value is less than or equal to 70 KOH/g;

and 5: adding styrene for dilution, adding an antioxidant, reacting for 1-1.5h, and then cooling to 60-70 ℃;

the molar ratio of the polyhydric alcohol to the polybasic acid is 1-1.05: 1;

the polyol consists of diethylene glycol, 1, 4-cyclohexanedimethanol and glycerol in a weight ratio of 7:2: 1;

the polybasic acid consists of maleic anhydride, tetrahydrophthalic anhydride and isophthalic acid in a weight ratio of 6:3.2-3.5: 0.5-0.8;

the total amount of the linoleic acid and the myristic acid is 8-12% of the total weight of the polybasic acid and the polyhydric alcohol;

the styrene accounts for 30 to 35 percent of the total weight of the polybasic acid and the polyhydric alcohol;

10-15% trimethylolpropane diallyl ether relative to the total weight of the polyacid and the polyol.

In the high-iron atomic ash, the polymerization inhibitor is one or more of hydroquinone, NSI, I-95 and TBC, and the polymerization inhibitor is 0.01-0.03 percent of the total weight of polybasic acid and polyhydric alcohol;

the antioxidant used in the step 1 and the step 5 is organic phosphite ester or phenolic antioxidant, and the antioxidant accounts for 0.03-0.1% of the total weight of the polybasic acid and the polyhydric alcohol.

In the high-iron atomic ash, the diluent is styrene.

In the high-iron putty, the filler is talcum powder.

In the high-iron putty, the weight ratio of the linoleic acid to the myristic acid is 7-8: 2-3.

Meanwhile, the invention also discloses a preparation method of the high-iron atomic ash, which comprises the following steps:

step 1: mixing and dispersing polyester resin, a dispersing agent, a stabilizing agent and a diluting agent;

step 2: adding the filler and continuously dispersing for 0.5-1 h;

and step 3: vacuumizing for 15-30min to obtain the component A.

Compared with the prior art, the invention has the beneficial effects that:

the invention adopts the combination of the trihydric alcohol and the dihydric alcohol, and simultaneously can show better flexibility and adhesive force under the action of maleic anhydride, tetrahydrophthalic anhydride and preferably air-drying monomer trimethylolpropane diallyl ether, thereby improving the application performance on high-speed rails.

More specifically, the linoleic acid has air-drying property, and the trimethylolpropane diallyl ether also has air-drying property, and the combination of the linoleic acid and the trimethylolpropane diallyl ether can improve the air-drying speed of the whole formula. Meanwhile, the impact resistance can be improved by matching with the saturated fatty acid myristic acid.

Meanwhile, the invention also discloses the atomic ash and a preparation method thereof.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.