Emulsifying device for epoxy modified alkyd resin

Abstract

The utility model discloses an emulsifying device for epoxy modified alkyd resin. A stirring motor, a material inlet and a tail gas port are arranged at the top of a preheating tank; an inner coil heat-conducting oil outlet is formed in the middle in the tank, an oil inlet and a preheating tank thermometer are arranged at the lower part in the tank, and a tank bottom outlet pipeline is connected with the top of the emulsifying kettle after passing through a blanking valve; a water adding opening and a vertical condenser are arranged at the top of the kettle, an emulsifying kettle stirring motor and an emulsifying motor are arranged in the middle of the top of the kettle, the emulsifying motor is connected with a dispersing disc through a transmission mechanism, and a polytetrafluoroethylene scraper is arranged at the edge of a stirring blade arranged on an output shaft of the emulsifying kettle stirring motor; an outer half coil pipe heat conduction oil inlet and an oil outlet are formed in the outer wall of the kettle, the oil inlet is formed in the lower part, the oil outlet is formed in the upper part, an emulsification kettle thermometer and a sampling port are arranged at the lower part, and a top-bottom valve is arranged at the bottom; an inlet of the gear pump is connected with a top-bottom valve, an outlet is divided into two paths, one path is connected to the kettle top after being connected with a circulating pipe ball valve, and the other path is connected with a discharge valve. With the adoption of the device, qualified epoxy modified alkyd resin emulsion products with certain solid content and certain particle size can be prepared.

Description

TECHNICAL FIELD

[0001] The utility model relates to an organic chemical product alkyd resin emulsion production device technical field, concretely relates to emulsifying device of epoxy modified alkyd resin. TECHNICAL BACKGROUND

[0002] With the enhancement of people's environmental protection consciousness, reducing the emission of volatile organic compounds VOC to reduce the harm caused by greenhouse effect is paid more and more attention, make resin water-based gradually towards the market. Water-based alkyd resin is mainly applied to the industrial steel structure light anticorrosive coating, for coastal zone, the anticorrosive performance of single alkyd resin cannot satisfy the requirement, and epoxy resin has excellent physical and chemical properties, it has excellent bonding strength to the surface of metal and nonmetal material, has good adhesion, high hardness, and its anticorrosive performance is particularly outstanding, is widely used in heavy anticorrosion field such as container; but the price of epoxy resin is much higher than alkyd resin, therefore it is necessary to modify alkyd resin with epoxy resin, so that the anticorrosive performance of modified alkyd resin is obviously improved, so that it can be applied to the metal corrosion of coastal zone, due to the high viscosity of modified alkyd resin, it is inconvenient to flow and apply directly, needs to be water-based and be made into emulsion. SUMMARY

[0003] The utility model aims at providing a kind of emulsifying device of epoxy modified alkyd resin with simple structure, convenient and efficient operation, the product quality reliable of production, according to the characteristics that epoxy resin ring-opening grafting is on alkyd resin molecule, molecular weight is big, relatively viscous, first preheating tank of the device is used to heat epoxy modified alkyd resin to certain temperature, then in emulsifying kettle, high-speed stirring motor with dispersion disc is used to shear stirring, while water and emulsifier are added, epoxy modified alkyd resin is emulsified, so that the epoxy modified alkyd resin emulsion qualified product of certain solid content and certain particle size is prepared.

[0004] To achieve the above objectives, the emulsification device for epoxy-modified alkyd resin of this utility model includes a preheating tank 1, a material inlet 2, a preheating tank stirring motor 3, a preheating tank thermometer 7, a discharge valve 8, an emulsification kettle 9, an emulsification kettle stirring motor 10, an emulsification motor 11, a vertical condenser 12, a dispersion disc 14, a PTFE scraper 15, a top and bottom valve 18, an emulsification kettle thermometer 19, a gear pump 21, a circulation pipe ball valve 22, and a discharge valve 23. The preheating tank stirring motor 3 is installed on the top of the preheating tank 1, with a material inlet 2 on one side and a tail gas outlet 4 on the other side. The middle part of the preheating tank 1 has an internal coil heat transfer oil outlet 6, and the lower part has an internal coil heat transfer oil inlet 5 and a preheating tank thermometer 7. The bottom outlet pipe of the preheating tank 1 is connected to the top of the emulsification kettle 9 via the discharge valve 8. The emulsifying kettle 9 is equipped with a water inlet 13 and a vertical condenser 12 at the top. An emulsifying kettle stirring motor 10 and an emulsifying motor 11 are installed in the middle of the kettle top. The emulsifying motor 11 is connected to a dispersing disc 14 via a transmission mechanism. The stirring blades on the output shaft of the emulsifying kettle stirring motor 10 are equipped with PTFE scrapers 15. The outer wall of the emulsifying kettle 9 is equipped with an outer half-coil heat transfer oil inlet 16 and an outer half-coil heat transfer oil outlet 17. The outer half-coil heat transfer oil inlet 16 is at the bottom and the outer half-coil heat transfer oil outlet 17 is at the top. The lower part of the emulsifying kettle 9 is equipped with an emulsifying kettle thermometer 19 and a sampling port 20. The bottom is equipped with a top and bottom valve 18. The inlet of the gear pump is connected to the top and bottom valve 18, and the outlet is divided into two paths. One path is connected to the top of the kettle after connecting to the circulation pipe ball valve 22, and the other path is connected to the discharge valve 23.

[0005] The production of epoxy-modified alkyd resin emulsion is based on the characteristics of epoxy resin being ring-opened and grafted onto alkyd resin molecules, having a large molecular weight and relatively high viscosity. Utilizing the aforementioned epoxy-modified alkyd resin emulsification device, the epoxy-modified alkyd resin is first preheated to a certain temperature in a preheating tank. Then, in an emulsification kettle, it is sheared and stirred by a high-speed stirring motor with a dispersion disc, while water and emulsifier are added simultaneously to emulsify the epoxy-modified alkyd resin. This process yields a qualified epoxy-modified alkyd resin emulsion product with a certain solid content and particle size, which can be used to partially replace the more expensive existing epoxy resins in various applications.

[0006] The above-mentioned emulsification device for epoxy-modified alkyd resin has the following technical features and beneficial effects:

[0007] 1. The high-speed stirring of the dispersion disc driven by the emulsifying motor can efficiently shear the alkyd resin, so that the relatively viscous epoxy modified alkyd resin can effectively form an emulsion, and obtain a qualified epoxy modified alkyd resin emulsion product with a certain solid content and a certain particle size.

[0008] 2. The stirring paddle with PTFE scraper can prevent viscous epoxy-modified alkyd resin from adhering to the reactor wall, resulting in more complete emulsification.

[0009] 3. The epoxy modified alkyd resin, emulsifier and water are formed into emulsion under high shear, and the emulsion is circulated by gear pump, the particle size of the emulsion is gradually reduced and tends to be stable, and high quality epoxy modified alkyd resin emulsion is obtained. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 is a main sectional view of the emulsifying device for epoxy modified alkyd resin.

[0011] The drawing comprises: a preheating tank 1, a material inlet 2, a preheating tank stirring motor 3, a tail gas outlet 4, an inner coil heat conducting oil inlet 5, an inner coil heat conducting oil outlet 6, a preheating tank thermometer 7, a discharging valve 8, an emulsifying kettle 9, an emulsifying kettle stirring motor 10, an emulsifying motor 11, a vertical condenser 12, a water inlet 13, a dispersing disc 14, a four-fluorine scraper 15, an outer half coil heat conducting oil inlet 16, an outer half coil heat conducting oil outlet 17, a top and bottom valve 18, an emulsifying kettle thermometer 19, a sampling port 20, a gear pump 21, a circulating pipe ball valve 22 and a discharging valve 23. DETAILED DESCRIPTION

[0012] The emulsifying device for epoxy modified alkyd resin is further described in detail below with reference to the drawings and specific embodiments.

[0013] Figure 1The utility model discloses epoxy modified alkyd resin's emulsifying device includes preheating jar 1, material inlet 2, preheating jar stirring motor 3, preheating jar thermometer 7, unloading valve 8, emulsion kettle 9, emulsion kettle stirring motor 10, emulsification motor 11, vertical condenser 12, dispersion disc 14, four fluorine scraper 15, top and bottom valve 18, emulsion kettle thermometer 19, gear pump 21, circulating pipe ball valve 22 and discharge valve 23, preheating jar stirring motor 3 is installed in preheating jar 1 top, its one side is equipped with material inlet 2, and the other side is equipped with tail gas outlet 4, the middle part in preheating jar 1 is equipped with inner coil heat conducting oil outlet 6, can heat the material, is equipped with inner coil heat conducting oil inlet 5 and preheating jar thermometer 7 in lower part, and the bottom outlet pipeline of preheating jar 1 is connected emulsion kettle 9 top after unloading valve 8, can unload to emulsion kettle after controlling certain temperature when operating, emulsion kettle 9 top is equipped with water inlet 13 and vertical condenser 12, and water inlet can also add emulsifying agent, and vertical condenser 12 is used for preventing the evaporation of moisture in the kettle to stabilize the solid content of prepared emulsion, and emulsion kettle stirring motor 10 and emulsification motor 11 are installed in the middle of kettle top, the emulsification motor 11 is connected dispersion disc 14 through transmission mechanism, is used for high speed shearing material, and the edge of stirring blade on emulsion kettle stirring motor 10 output shaft is equipped with four fluorine scraper 15, is used for stirring material, makes epoxy modified alkyd resin, emulsifying agent and water mix uniformly, also can avoid viscous material wall hanging thereby influence emulsification, emulsion kettle 9 outer wall is equipped with outer half coil heat conducting oil inlet 16 and outer half coil heat conducting oil outlet 17, and outer half coil heat conducting oil inlet 16 is below, and outer half coil heat conducting oil outlet 17 is above, and heat conducting oil is under in and out, can heat and cool the material in emulsion kettle 9, and the lower part of emulsion kettle 9 is equipped with emulsion kettle thermometer 19 and sampling port 20, and the bottom is equipped with top and bottom valve 18, the inlet of gear pump is connected top and bottom valve 18, and the outlet is divided into two ways, one way is connected circulating pipe ball valve 22 after and is connected to kettle top, and the other way is connected discharge valve 23.

[0014] When epoxy modified alkyd resin is formed emulsion after high speed shearing, opens circulating pipe ball valve 22, closes discharge valve 23, opens gear pump 21, and the material is circulated constantly, and the particle size of emulsion is gradually reduced and tends to be stable after circulating shearing, and opens discharge valve 23 first, and then closes circulating pipe ball valve 22, and carries out filtration packaging after being qualified.

Claims

1. An apparatus for emulsifying an epoxy-modified alkyd resin, characterized by: It includes preheating tank (1), material inlet (2), preheating tank stirring motor (3), preheating tank thermometer (7), discharging valve (8), emulsification kettle (9), emulsification kettle stirring motor (10), emulsification motor (11), vertical condenser (12), dispersion disc (14), four fluorine scraper (15), top and bottom valve (18), emulsification kettle thermometer (19), gear pump (21), circulating pipe ball valve (22) and discharge valve (23);The preheating tank stirring motor (3) is installed at the top of the preheating tank (1), one side is provided with material inlet (2), the other side is provided with tail gas outlet (4);The middle part of the preheating tank (1) is provided with inner coil heat conducting oil outlet (6), the lower part is provided with inner coil heat conducting oil inlet (5) and preheating tank thermometer (7), the bottom outlet pipeline of the preheating tank (1) is connected to the top of the emulsification kettle (9) after the discharging valve (8);The top of the emulsification kettle (9) is provided with water inlet (13) and vertical condenser (12), the kettle top is installed with emulsification kettle stirring motor (10) and emulsification motor (11), the emulsification motor (11) is connected with dispersion disc (14) through transmission mechanism, the stirring blade edge provided on the output shaft of the emulsification kettle stirring motor (10) is provided with four fluorine scraper (15);The outer wall of the emulsification kettle (9) is provided with outer half coil heat conducting oil inlet (16) and outer half coil heat conducting oil outlet (17), the outer half coil heat conducting oil inlet (16) is below, the outer half coil heat conducting oil outlet (17) is above, the lower part of the emulsification kettle (9) is provided with emulsification kettle thermometer (19) and sampling port (20), the bottom is provided with top and bottom valve (18);The inlet of the gear pump is connected with the top and bottom valve (18), the outlet is divided into two ways, one way is connected to the kettle top after connecting the circulating pipe ball valve (22), the other way is connected with the discharge valve (23).

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