Process for the preparation of a high efficiency dispersant for waterborne resins, apparatus and use thereof

Abstract

The application relates to the technical field of dispersants, in particular to a preparation method and device of a high-efficiency dispersant for water-based resin and application thereof, which comprises a reaction container and a preparation assembly, the preparation assembly comprises a cover plate, a U-shaped sealing plate and two movable covers, two through openings are arranged at the cover plate in a spaced mode, the cover plate is detachably connected with the reaction container, the cover plate is located above the reaction container, the U-shaped sealing plate is slidably connected with the cover plate, the U-shaped sealing plate is arranged in the cover plate, the two ends of the U-shaped sealing plate are arranged in the two through openings respectively, the two ends of the U-shaped sealing plate are symmetrically provided with first openings, one end of the U-shaped sealing plate is further provided with a second opening, the two movable covers are detachably connected with the cover plate respectively, and the two movable covers are located at the two through openings respectively. Through the arrangement of the above structure, the raw materials can be simultaneously added into the reaction container, and the preparation effect of the high-efficiency dispersant for water-based resin is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of dispersant, in particular to a preparation method and device of high-efficiency dispersant for water-based resin and application thereof. BACKGROUND

[0002] When the high-efficiency dispersant for water-based resin is prepared, the acrylic resin liquid and the prepared ammonium acrylate aqueous solution are usually added into a funnel, an initiator solution is prepared in another funnel, water and a small amount of initiator solution are added into a reaction container, and then the remaining raw materials in the two funnels are added dropwise into the reaction container after a period of time to prepare the high-efficiency dispersant for water-based resin.

[0003] However, when the remaining raw materials in the two funnels are added dropwise into the reaction container, the remaining raw materials in the two funnels cannot be added into the reaction container at the same time and at a uniform speed by manual operation, which affects the preparation effect of the high-efficiency dispersant for water-based resin. SUMMARY

[0004] The present application aims to provide a preparation method and device of high-efficiency dispersant for water-based resin and application thereof, which can ensure that the raw materials are added into the reaction container at the same time to ensure the preparation effect of the high-efficiency dispersant for water-based resin.

[0005] To achieve the above-mentioned purpose, the present application provides a preparation device of high-efficiency dispersant for water-based resin, which comprises a reaction container and a preparation assembly, the preparation assembly comprises a cover plate, a U-shaped closure plate and two movable covers, two through openings are arranged at intervals in the cover plate, the cover plate is detachably connected with the reaction container, the cover plate is located above the reaction container, the U-shaped closure plate is slidably connected with the cover plate, the U-shaped closure plate is arranged inside the cover plate, and the two ends of the U-shaped closure plate are respectively arranged inside the two through openings, the two ends of the U-shaped closure plate are symmetrically provided with first openings, one end of the U-shaped closure plate is further provided with a second opening, and the two movable covers are respectively detachably connected with the cover plate, and the two movable covers are respectively located at the two through openings.

[0006] The preparation assembly further comprises a threaded column, the threaded column is threadedly connected with the cover plate, and the threaded column is located above the U-shaped closure plate.

[0007] The preparation assembly further comprises a sealing structure, and the sealing structure is arranged between the movable cover and the cover plate.

[0008] The sealing structure comprises a sealing inner ring, a sealing outer ring and a sealing spring, the cover plate has a containing groove, the sealing outer ring is arranged in the containing groove, two ends of the sealing spring are fixedly connected with the sealing inner ring and the sealing outer ring respectively, the sealing spring is located inside the sealing outer ring, and the sealing inner ring is in sliding connection with the sealing outer ring.

[0009] The application further provides a preparation method of the high-efficiency dispersant for water-based resin.

[0010] 350-450 parts by weight of acrylic resin liquid, 50-100 parts by weight of ammonium acrylate and 100-200 parts by weight of water are mixed in one of the through openings to obtain mixed liquid A;

[0011] 40-90 parts by mass of an initiator and 150-250 parts of water are mixed in another through opening to obtain mixed liquid B;

[0012] The U-shaped closing plate is pulled to make the second opening coincide with the through opening, so that the mixed liquid B is dropped into the reaction container at 8-16%;

[0013] The U-shaped closing plate is pulled again to make the two first openings of the U-shaped closing plate coincide with the two through openings respectively, and the mixed liquid A and the mixed liquid B in the two through openings are simultaneously and uniformly dropped into the reaction container;

[0014] After the dropping is completed, the reaction container is heated to 80-120 DEG C and kept for 1-2 hours, then cooled to room temperature, neutralized to a pH value of 7-9 by using lye to obtain the high-efficiency dispersant for water-based resin.

[0015] In the step of mixing 40-90 parts by mass of an initiator and 150-250 parts of water in another through opening to obtain mixed liquid B:

[0016] The initiator is one of sodium persulfate or potassium persulfate.

[0017] The application further provides an application of the high-efficiency dispersant for water-based resin prepared by using the preparation method of the high-efficiency dispersant for water-based resin.

[0018] The present invention discloses a method, apparatus, and application for preparing a high-efficiency dispersant for water-based resins. When the U-shaped sealing plate slides to the point where the first opening coincides with the through-hole, both through-holes are connected to the reaction vessel. At this time, the liquid in both through-holes can flow into the reaction vessel. Since the two first openings at both ends of the U-shaped sealing plate are the same size, the inflow rate and inflow time of the raw materials flowing into the reaction vessel through the two through-holes are the same, thereby ensuring that the raw materials can be added to the reaction vessel simultaneously, thus ensuring the preparation effect of the high-efficiency dispersant for water-based resins. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0020] Figure 1 This is a structural cross-sectional view of an apparatus for preparing a high-efficiency dispersant for water-based resins according to the present invention.

[0021] Figure 2 This is the invention Figure 1 Sectional view at point AA.

[0022] Figure 3 This is the invention Figure 1 A magnified view of a section at point B in the middle.

[0023] Figure 4 This is the invention Figure 2 Sectional view at point CC.

[0024] Figure 5 This is a flowchart of a method for preparing a high-efficiency dispersant for water-based resins according to the present invention.

[0025] 101-Reaction vessel, 102-Cover plate, 103-U-shaped sealing plate, 104-Modible cover, 105-Port, 106-First opening, 107-Second opening, 108-Threaded post, 109-Sealing inner ring, 110-Sealing outer ring, 111-Sealing spring, 112-Receiving groove, 113-Sealing ring, 114-Annular mounting groove, 115-Gas outlet, 116-Rubber plug, 117-Connecting ring. Detailed Implementation

[0026] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0027] Please see Figures 1-4 , Figure 1is a structure sectional view of a preparation device of a high-efficiency dispersing agent for water-based resin, Figure 2 is a structure sectional view of a preparation device of a high-efficiency dispersing agent for water-based resin, Figure 1 is a sectional view at A-A in Figure 3 is a structure sectional view of a preparation device of a high-efficiency dispersing agent for water-based resin, Figure 1 is a local enlarged view at B in Figure 4 is a structure sectional view of a preparation device of a high-efficiency dispersing agent for water-based resin, Figure 2 is a sectional view at C-C in The present application provides a preparation device of a high-efficiency dispersing agent for water-based resin, comprising a reaction container 101 and a preparation assembly, the preparation assembly comprising a cover plate 102, a U-shaped sealing plate 103, a threaded column 108, a sealing structure, a sealing ring 113 and two movable covers 104;

[0028] For this specific embodiment, the cover plate 102 is provided with two through openings 105, the cover plate 102 is detachably connected with the reaction container 101, the cover plate 102 is located above the reaction container 101, the U-shaped sealing plate 103 is slidably connected with the cover plate 102, the U-shaped sealing plate 103 is arranged inside the cover plate 102, and the two ends of the U-shaped sealing plate 103 are respectively arranged inside the two through openings 105, the two ends of the U-shaped sealing plate 103 are symmetrically provided with first openings 106, one end of the U-shaped sealing plate 103 is also provided with a second opening 107, and the two movable covers 104 are respectively detachably connected with the cover plate 102, and the two movable covers 104 are respectively located at the two through openings 105. The two ends of the U-shaped sealing plate 103 can respectively block the two through openings 105, the through openings 105 and the U-shaped sealing plate 103 cooperate to form a groove capable of containing liquid inside the through openings 105, the first openings 106 and the second openings 107 are arranged at intervals, when the U-shaped sealing plate 103 slides to the position where the second opening 107 coincides with the through opening 105, one of the through openings 105 communicates with the reaction container 101, and the other through opening 105 is still blocked by the U-shaped sealing plate 103, so that the liquid in the through opening 105 at the second opening 107 can flow into the reaction container 101, when the U-shaped sealing plate 103 slides to the position where the first opening 106 coincides with the through opening 105, at this time, the two through openings 105 communicate with the reaction container 101, at this time, the liquid in the two through openings 105 can flow into the reaction container 101, because the sizes of the two first openings 106 at the two ends of the U-shaped sealing plate 103 are the same, so at this time, the flow rate and the flow time of the raw materials flowing into the reaction container 101 through the two through openings 105 are the same, thereby ensuring that the raw materials can be added into the reaction container 101 at the same time, to ensure the preparation effect of the high-efficiency dispersing agent for water-based resin.

[0029] Specifically, the threaded column 108 is screwed with the cover plate 102, and the threaded column 108 is located above the U-shaped closing plate 103. The threaded column 108 can rotate relative to the cover plate 102. When the threaded column 108 is tightened, the bottom of the threaded column 108 abuts against the U-shaped closing plate 103, so that the U-shaped closing plate 103 cannot slide, thereby fixing the U-shaped closing plate 103. When the U-shaped closing plate 103 needs to be slid, the threaded column 108 is only loosened.

[0030] Further, the sealing structure is arranged between the movable cover 104 and the cover plate 102. The sealing structure is used to seal between the movable cover 104 and the cover plate 102.

[0031] Specifically, the sealing structure includes a sealing inner ring 109, a sealing outer ring 110, and a sealing spring 111. The cover plate 102 has a containing groove 112, the sealing outer ring 110 is arranged in the containing groove 112, the two ends of the sealing spring 111 are fixedly connected with the sealing inner ring 109 and the sealing outer ring 110 respectively, the sealing spring 111 is located inside the sealing outer ring 110, and the sealing inner ring 109 is slidably connected with the sealing outer ring 110. The containing groove 112 is used to place the sealing outer ring 110, so as to facilitate positioning of the sealing structure. The sealing spring 111 abuts against the sealing outer ring 110. When the movable cover 104 is fixed with the cover plate 102, the sealing outer ring 110 and the sealing inner ring 109 are both abutted by the sealing spring 111, so that the bottom of the sealing outer ring 110 is closely attached to the cover plate 102, and the top of the sealing inner ring 109 is closely attached to the movable cover 104, thereby improving the sealing effect between the movable cover 104 and the U-shaped closing plate 103.

[0032] Further, the top of the cover plate 102 has an annular mounting groove 114, and the sealing ring 113 is arranged inside the annular mounting groove 114. The sealing ring 113 is arranged between the movable cover 104 and the cover plate 102, so as to improve the sealing effect between the movable cover 104 and the cover plate 102.

[0033] Further, the top of the movable cover 104 is provided with an air outlet 115, and the top of the air outlet 115 is provided with a rubber plug 116. When the first opening 106 coincides with the through hole 105, the liquid in the through hole 105 can flow into the reaction container 101 along the first opening 106. At this time, the rubber plug 116 in the air outlet 115 is pulled out to open the air outlet 115, so that the liquid can smoothly flow into the reaction container 101.

[0034] Further, the bottom of the movable cover 104 is provided with a connecting ring 117, the outer side of the connecting ring 117 is provided with external threads, the inner side of the through hole 105 is provided with internal threads, and the connecting ring 117 is threadedly connected with the cover plate 102. The movable cover 104 is threadedly connected with the cover plate 102 through the connecting ring 117 to realize the detachable connection with the cover plate 102, so as to facilitate the disassembly of the movable cover 104, thereby facilitating the staff to place raw materials into the through hole 105.

[0035] Please refer to Figure 5 , Figure 5 is a flow chart of a preparation method of a high-efficiency dispersant for water-based resin. The present application also provides a preparation method of a high-efficiency dispersant for water-based resin, uses the above-mentioned preparation device of a high-efficiency dispersant for water-based resin to prepare, and the application of the high-efficiency dispersant for water-based resin prepared by the above-mentioned preparation method of a high-efficiency dispersant for water-based resin. The preparation method specifically includes the following steps:

[0036] S1: 350-450 parts by weight of acrylic resin liquid, 50-100 parts by weight of ammonium acrylate and 100-200 parts by weight of water are mixed in one of the through holes 105 to obtain a mixed liquid A;

[0037] S2: 40-90 parts by mass of initiator and 150-250 parts of water are mixed in another through hole 105 to obtain a mixed liquid B;

[0038] S3: The U-shaped sealing plate 103 is pulled to make the second opening 107 coincide with the through hole 105, so that the mixed liquid B is dropped into 8-16% in the reaction container 101;

[0039] S4: The U-shaped sealing plate 103 is pulled again, so that the two first openings 106 of the U-shaped sealing plate 103 coincide with the two through holes 105 respectively, and the mixed liquid A and the mixed liquid B in the two through holes 105 are simultaneously and uniformly dropped into the reaction container 101;

[0040] S5: After the dropping is completed, the reaction container 101 is heated to 80-120℃ and kept for 1-2h, and then cooled to room temperature, neutralized to PH value of 7-9 by alkali solution to prepare a high-efficiency dispersant for water-based resin.

[0041] When preparing the high-efficiency dispersant for water-based resin, 350-450 parts by weight of acrylic resin liquid, 50-100 parts by weight of ammonium acrylate and 100-200 parts by weight of water are mixed in the through hole 105 away from the second opening 107 to obtain a mixed liquid A; then 40-90 parts by mass of an initiator, which is one of sodium persulfate or potassium persulfate, and 150-250 parts of water are mixed in another through hole 105 to obtain a mixed liquid B; subsequently, the U-shaped closure plate 103 is pulled to make the second opening 107 coincide with the through hole 105, so that the mixed liquid B is dropped into 8-16% in the reaction container 101; secondly, the U-shaped closure plate 103 is pulled again to make the two first openings 106 of the U-shaped closure plate 103 respectively coincide with the two through holes 105, and the mixed liquid A and the mixed liquid B in the two through holes 105 are simultaneously and uniformly dropped into the reaction container 101; finally, after the dropping is completed, the reaction container 101 is warmed to 80-120°C and kept for 1-2 hours, and then cooled to room temperature, and neutralized to a pH value of 7-9 by using lye to obtain the high-efficiency dispersant for water-based resin.

[0042] Example 1:

[0043] When preparing the high-efficiency dispersant for water-based resin, 350 parts by weight of acrylic resin liquid, 50 parts by weight of ammonium acrylate and 200 parts by weight of water are mixed in the through hole 105 away from the second opening 107 to obtain a mixed liquid A; then 40 parts by mass of an initiator and 250 parts of water are mixed in another through hole 105 to obtain a mixed liquid B; subsequently, the U-shaped closure plate 103 is pulled to make the second opening 107 coincide with the through hole 105, so that the mixed liquid B is dropped into 8% in the reaction container 101; secondly, the U-shaped closure plate 103 is pulled again to make the two first openings 106 of the U-shaped closure plate 103 respectively coincide with the two through holes 105, and the mixed liquid A and the mixed liquid B in the two through holes 105 are simultaneously and uniformly dropped into the reaction container 101; finally, after the dropping is completed, the reaction container 101 is warmed to 120°C and kept for 1 hour, and then cooled to room temperature, and neutralized to a pH value of 7 by using lye to obtain the high-efficiency dispersant for water-based resin.

[0044] Example 2:

[0045] When preparing the high-efficiency dispersant for water-based resin, 400 parts by weight of acrylic resin liquid, 60 parts by weight of ammonium acrylate and 180 parts by weight of water are mixed in the through port 105 away from the second opening 107 to obtain a mixed liquid A; then 60 parts by mass of initiator and 180 parts of water are mixed in another through port 105 to obtain a mixed liquid B; then the U-shaped closure plate 103 is pulled to make the second opening 107 coincide with the through port 105, so that the mixed liquid B is dropped into the reaction container 101 by 10%; then the U-shaped closure plate 103 is pulled again, so that the two first openings 106 of the U-shaped closure plate 103 respectively coincide with the two through ports 105, and the mixed liquid A and the mixed liquid B in the two through ports 105 are simultaneously and uniformly dropped into the reaction container 101; finally, after the dropping is completed, the reaction container 101 is heated to 100°C and kept for 1.5 h, and then cooled to room temperature, and neutralized to a pH value of 8 by using lye to obtain the high-efficiency dispersant for water-based resin.

[0046] Example 3:

[0047] When preparing the high-efficiency dispersant for water-based resin, 400 parts by weight of acrylic resin liquid, 60 parts by weight of ammonium acrylate and 180 parts by weight of water are mixed in the through port 105 away from the second opening 107 to obtain a mixed liquid A; then 60 parts by mass of initiator and 160 parts of water are mixed in another through port 105 to obtain a mixed liquid B; then the U-shaped closure plate 103 is pulled to make the second opening 107 coincide with the through port 105, so that the mixed liquid B is dropped into the reaction container 101 by 13%; then the U-shaped closure plate 103 is pulled again, so that the two first openings 106 of the U-shaped closure plate 103 respectively coincide with the two through ports 105, and the mixed liquid A and the mixed liquid B in the two through ports 105 are simultaneously and uniformly dropped into the reaction container 101; finally, after the dropping is completed, the reaction container 101 is heated to 11°C and kept for 1.2 h, and then cooled to room temperature, and neutralized to a pH value of 8 by using lye to obtain the high-efficiency dispersant for water-based resin.

[0048] Example 4:

[0049] When preparing the high-efficiency dispersant for water-based resin, 450 parts by weight of acrylic resin liquid, 100 parts by weight of ammonium acrylate and 100 parts by weight of water are mixed in the through hole 105 away from the second opening 107 to obtain a mixed liquid A; then 90 parts by mass of initiator and 150 parts of water are mixed in another through hole 105 to obtain a mixed liquid B; then the U-shaped closure plate 103 is pulled to make the second opening 107 coincide with the through hole 105, so that the mixed liquid B is dropped into the reaction container 101 at 16%; then the U-shaped closure plate 103 is pulled again, so that the two first openings 106 of the U-shaped closure plate 103 coincide with the two through holes 105 respectively, and the mixed liquid A and the mixed liquid B in the two through holes 105 are dropped into the reaction container 101 at the same time and uniformly; finally, after the dropping is completed, the reaction container 101 is warmed to 80℃ and kept for 2h, then cooled to room temperature, and neutralized to PH 9 with lye to obtain the high-efficiency dispersant for water-based resin.

[0050] The above only discloses one or more preferred embodiments of the present application, and cannot limit the scope of the present application. Those skilled in the art can understand that all or part of the above-mentioned processes can be implemented, and equivalent changes made according to the claims of the present application still fall within the scope of the present application.

Claims

1. An apparatus for preparing a high-efficiency dispersant for water-based resins, comprising a reaction vessel, characterized in that, It also includes the preparation components; The preparation assembly includes a cover plate, a U-shaped sealing plate, and two movable covers. The cover plate has two openings spaced apart. The cover plate is detachably connected to the reaction vessel and is located above the reaction vessel. The U-shaped sealing plate is slidably connected to the cover plate and passes through the interior of the cover plate. Both ends of the U-shaped sealing plate pass through the interiors of the two openings. The two ends of the U-shaped sealing plate have symmetrical first openings, and one end of the U-shaped sealing plate also has a second opening. The two movable covers are detachably connected to the cover plate and are located at the two openings. The preparation assembly further includes a sealing structure disposed between the movable cover and the cover plate; The sealing structure includes an inner sealing ring, an outer sealing ring, and a sealing spring. The cover plate has a receiving groove, and the outer sealing ring is disposed in the receiving groove. The two ends of the sealing spring are fixedly connected to the inner sealing ring and the outer sealing ring, respectively. The sealing spring is located inside the outer sealing ring, and the inner sealing ring is slidably connected to the outer sealing ring. The preparation assembly also includes a sealing ring, the top of the cover plate has an annular mounting groove, and the sealing ring is disposed inside the annular mounting groove; the top of the movable cover is provided with an air outlet, and the top of the air outlet is provided with a rubber plug; the bottom of the movable cover is provided with a connecting ring, the outer side of the connecting ring is provided with an external thread, the inner side of the through-hole is provided with an internal thread, and the connecting ring is threadedly connected to the cover plate.

2. The apparatus for preparing a high-efficiency dispersant for waterborne resins as described in claim 1, characterized in that, The preparation assembly also includes a threaded post, which is threadedly connected to the cover plate and is located above the U-shaped closure plate.

3. A method for preparing a high-efficiency dispersant for water-based resins, comprising using the apparatus for preparing a high-efficiency dispersant for water-based resins as described in claim 1, characterized in that, Specifically, the following steps are included: Mixture A is obtained by mixing 350-450 parts by weight of acrylic resin liquid, 50-100 parts by weight of ammonium acrylate and 100-200 parts by weight of water in one of the openings; Mix 40-90 parts by weight of the initiator with 150-250 parts by weight of water in another port to obtain mixture B; Pull the U-shaped sealing plate so that the second opening coincides with the through-hole, so that 8-16% of the mixture B can be dripped into the reaction vessel; Then pull the U-shaped sealing plate so that the two first openings of the U-shaped sealing plate coincide with the two through-holes respectively, and the mixture A and mixture B from the two through-holes are simultaneously and evenly dripped into the reaction vessel; After the addition is complete, the reaction vessel is heated to 80-120°C and maintained for 1-2 hours, then cooled to room temperature and neutralized with alkali solution to a pH of 7-9 to obtain a high-efficiency dispersant for water-based resins.

4. The method for preparing a high-efficiency dispersant for waterborne resins as described in claim 3, characterized in that, In the step of mixing 40-90 parts by weight of the initiator with 150-250 parts by weight of water in another inlet to obtain mixture B: The initiator is either sodium persulfate or potassium persulfate.

5. The application of a high-efficiency dispersant for waterborne resins prepared by the method described in claim 4.

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