CN113274961A

CN113274961A - Preparation method and production equipment of organic silicon foam homogenizing agent

Info

Publication number: CN113274961A
Application number: CN202110600842.0A
Authority: CN
Inventors: 陈勇刚
Original assignee: Zhejiang Ze Polymer Materials Co ltd
Current assignee: Zhejiang Ze Polymer Materials Co ltd
Priority date: 2021-05-31
Filing date: 2021-05-31
Publication date: 2021-08-20

Abstract

The invention discloses a preparation method of a silicone foam homogenizing agent and production equipment thereof, and the preparation method comprises a tank body, a feeding pipe and a discharging pipe, wherein the top of the tank body is provided with the feeding pipe, the bottom of the tank body is provided with the discharging pipe, a stirring device for mixing materials is arranged in the tank body, one side of the tank body is provided with a nitrogen supply device for replacing air in the tank body, and the nitrogen supply device is connected with a nitrogen making machine. The preparation stability of the organosilicon foam homogenizing agent is improved.

Description

Preparation method and production equipment of organic silicon foam homogenizing agent

Technical Field

The invention relates to the technical field of foam homogenizing agents, in particular to a preparation method and production equipment of an organic silicon foam homogenizing agent.

Background

The foam stabilizer is an important additive for a wet-process polyurethane resin synthetic solution, can form a special foam structure, namely a thick skin-forming layer with fine foam holes close to a BASE fabric, a uniform vertical foam hole close to the surface of the BASE fabric, a thin skin-forming layer, a smooth and flat surface and no dark bubbles, and can ensure that the resin has the softness and hand feeling of the resin with low modulus on the basis of unchanged physical properties of the resin with high modulus.

The production process of the foam homogenizing agent has strict requirements on the reaction environment, particularly the whole process needs to be carried out in a nitrogen atmosphere, the traditional equipment adopts a nitrogen supply instrument to carry out continuous nitrogen supply, excessive nitrogen supply is needed for ensuring the complete discharge of air, so that redundant nitrogen is discharged along with air, the utilization rate of the nitrogen is reduced, and the waste of energy is caused.

Disclosure of Invention

The invention aims to provide a preparation method of an organic silicon foam homogenizing agent and production equipment thereof, so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a production facility of organosilicon class soaking agent, includes a jar body, inlet pipe and row's material pipe, the inlet pipe is installed at the top of jar body, row's material pipe is installed to the bottom of jar body, the internally mounted of jar body has the agitating unit who carries out the mixture to the material, jar body one side is installed and is supplied nitrogen device to the internal portion air replacement of jar, it is connected with the nitrogen generator to supply nitrogen device.

Preferably, agitating unit includes driving motor, driving gear, driven gear, holder, stirring rod and lamina, driving motor is installed at jar body top, and the driving motor output shaft penetrates jar internal portion and installs the driving gear, jar internal portion top is fixed with the holder, holder surface symmetry rotates installs the stirring rod, the stirring rod top all is fixed with driven gear, and driven gear and driving gear meshing are connected, the equal equidistance in stirring rod surface is fixed with the lamina.

Preferably, the blades on the symmetrical surfaces of the stirring rods are arranged in a staggered mode.

Preferably, the stirring rod and the blade plate are both made of stainless steel materials.

Preferably, the nitrogen supply device comprises a first piston cylinder, a second piston cylinder, a rotating motor, a driving gear, a spray pipe, a rack, a piston block, a piston rod, a first port, a second port, a lower connecting pipe, an upper connecting pipe, a third port and a fourth port, the outer wall of the tank body is fixed with the first piston cylinder and the second piston cylinder, the piston block is arranged in the first piston cylinder and the second piston cylinder in a matched mode, the top of the piston block is fixed with the piston rod, the top end of the piston rod is fixed with the rack, the top of the tank body is provided with the rotating motor, an output shaft of the rotating motor is fixed with the driving gear, the driving gear is meshed with the rack, the lower connecting pipe and the upper connecting pipe are connected between the first piston cylinder and the second piston cylinder respectively, the first port and the second port are arranged on the side of the first piston cylinder respectively, the third port and the fourth port are arranged on the side of the second piston cylinder respectively, the bottom surface of the tank body is provided with a spray pipe, the first port is connected with the top of the tank body, the second port is connected with the spray pipe, and the third port and the fourth port are respectively connected with the air inlet end and the air exhaust end of the nitrogen making machine.

Preferably, the surfaces of the first port, the second port, the lower connecting pipe, the upper connecting pipe, the third port and the fourth port are all provided with one-way valves.

Preferably, the spray pipe comprises a ring pipe, a one-way nozzle and an air inlet pipe, wherein the air inlet pipe is connected to one side of the ring pipe and is connected with the second port, and the one-way nozzle is uniformly arranged on the inner side of the ring pipe.

Preferably, a sleeve frame is fixed on the top of the tank body, and the rack penetrates through the sleeve frame.

A preparation method of an organic silicon foam homogenizing agent comprises the following specific steps:

1) introducing octamethylcyclotetrasiloxane and high-hydrogen silicone oil into a tank body through a feeding pipe, fully mixing through a stirring device, and dehydrating for 2 hours at 80 ℃;

2) adding strong-acid macroporous ion exchange resin into the tank body through a feeding pipe, adding a capping agent, mixing, keeping the temperature at 80 ℃, and reacting for 3 hours to obtain low-hydrogen silicone oil;

3) purifying low-hydrogen silicone oil, mixing the purified low-hydrogen silicone oil with allyl polyether in a tank, keeping the temperature at 100 ℃, and reacting for 2 hours;

4) raising the temperature of the tank body to 120 ℃, adding a catalyst, and reacting for 3 hours to obtain a polyurethane foam stabilizer;

5) and (3) carrying out catalyst removal treatment on the polyurethane foam stabilizer to obtain the pure polyurethane foam stabilizer.

Preferably, step 1, step 2, step 3 and step 4 are all carried out under the nitrogen atmosphere provided by the nitrogen supply device and the nitrogen generator.

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

the nitrogen generator is used for supplying nitrogen into the tank body, the nitrogen supply device is used for synchronously supplying nitrogen and exhausting air, when the tank body is filled with nitrogen, the mixed gas of the nitrogen and the air which are excessively contained in the tank body is introduced into the air inlet part of the nitrogen generator, and the nitrogen generator is used for generating nitrogen for the mixed gas of the nitrogen and the air, so that the energy consumption is less compared with the single nitrogen generation for the air, the efficiency is higher, the nitrogen atmosphere in the tank body is ensured to be sufficient in the reaction process, and the preparation stability of the organic silicon foam homogenizing agent is improved.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic structural view of a stirring device according to the present invention;

FIG. 3 is a schematic view of a nitrogen supply apparatus according to the present invention;

FIG. 4 is a second schematic view of the nitrogen supply apparatus of the present invention;

FIG. 5 is a schematic view of the nozzle structure of the present invention.

In the figure: 1. a tank body; 2. a stirring device; 21. a drive motor; 22. a driving gear; 23. a driven gear; 24. a holder; 25. a stirring rod; 26. a leaf plate; 3. a feed pipe; 4. a discharge pipe; 5. a nitrogen supply device; 51. a first piston cylinder; 52. a second piston cylinder; 53. rotating the motor; 54. a drive gear; 55. a nozzle; 551. a ring pipe; 552. a one-way nozzle; 553. an air inlet pipe; 56. sleeving a frame; 57. a rack; 58. a piston block; 59. a piston rod; 510. a first port; 511. a second port; 512. a lower connecting pipe; 513. an upper connecting pipe; 514. a third port; 515. a fourth port; 6. a nitrogen making machine.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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.

Referring to fig. 1, the production equipment for the silicone foam homogenizing agent in the figure comprises a tank body 1, a feeding pipe 3 and a discharging pipe 4, wherein the feeding pipe 3 is installed at the top of the tank body 1, the discharging pipe 4 is installed at the bottom of the tank body 1, a stirring device 2 for mixing materials is installed inside the tank body 1, a nitrogen supply device 5 for replacing air inside the tank body 1 is installed on one side of the tank body 1, and the nitrogen supply device 5 is connected with a nitrogen generator 6.

Leading-in jar body 1 of reaction material is through inlet pipe 3 in, carry out the continuation nitrogen filling through nitrogen generator 6 and nitrogen supply device 5 to the space in jar body 1, mix the stirring through agitating unit 2 to the material, realize abundant reaction, can discharge the reactant through arranging material pipe 4.

Referring to fig. 2, the stirring device 2 includes a driving motor 21, a driving gear 22, a driven gear 23, a holder 24, a stirring rod 25 and a blade 26, the driving motor 21 is installed on the top of the tank 1, the driving gear 22 is installed inside the tank 1 through which an output shaft of the driving motor 21 penetrates, the holder 24 is fixed on the top end inside the tank 1, the stirring rod 25 is installed on the surface of the holder 24 in a symmetrical and rotating manner, the driven gear 23 is fixed on the top end of the stirring rod 25, the driven gear 23 is engaged with the driving gear 22, and the blade 26 is fixed on the surface of the stirring rod 25 at equal intervals.

The driving motor 21 is started to drive the driving gear 22 to transfer the driven gear 23 to rotate, so that the stirring rod 25 and the blade plate 26 synchronously rotate, and the mixture is stirred.

The blades 26 on the surface of the stirring rod 25 are arranged in a staggered manner, so that comprehensive and efficient material mixing and stirring are realized.

In addition, the stirring rod 25 and the blade plate 26 are both made of stainless steel materials, so that the stirring rod 25 and the blade plate 26 are better in corrosion resistance and longer in service life.

Referring to fig. 3 and 4, the nitrogen supply device 5 includes a first piston cylinder 51, a second piston cylinder 52, a rotating motor 53, a driving gear 54, a nozzle 55, a rack 57, a piston block 58, a piston rod 59, a first port 510, a second port 511, a lower connecting pipe 512, an upper connecting pipe 513, a third port 514, and a fourth port 515, the first piston cylinder 51 and the second piston cylinder 52 are fixed on the outer wall of the tank body 1, the piston block 58 is respectively installed inside the first piston cylinder 51 and the second piston cylinder 52, the piston rod 59 is fixed on the top of the piston block 58, the rack 57 is fixed on the top of the piston rod 59, the rotating motor 53 is installed on the top of the tank body 1, the driving gear 54 is fixed on the output shaft of the rotating motor 53, the driving gear 54 is engaged with the rack 57, the lower connecting pipe 512 and the upper connecting pipe 513 are respectively connected between the first piston cylinder 51 and the second piston cylinder 52, first port 510 and second port 511 are installed respectively to the side of first piston cylinder 51, third port 514 and fourth port 515 are installed respectively to the side of second piston cylinder 52, jar internal portion bottom surface is provided with spray tube 55, first port 510 connects jar body 1 top, spray tube 55 is connected to second port 511, the inlet end and the exhaust end of nitrogen generator 6 are connected respectively to third port 514 and fourth port 515, first port 510, second port 511, lower connecting pipe 512, go up connecting pipe 513, third port 514 and fourth port 515 surface all install the check valve.

The rotating motor 53 is started to drive the driving gear 54 to rotate clockwise, so that the rack 57 drives the piston rod 59 to move, the piston block 58 in the second piston cylinder 52 moves upwards, the piston block 58 in the first piston cylinder 51 moves downwards, nitrogen generated by the nitrogen making machine 6 enters the bottom of the second piston cylinder 52 through the fourth port 515, a mixed gas of air and nitrogen in the tank body 1 is introduced into the top of the first piston cylinder 51 through the first port 510, meanwhile, the nitrogen at the bottom of the first piston cylinder 51 is introduced into the tank body 1 through the second port 511 under pressure, the mixed gas at the top of the second piston cylinder 52 is introduced into the air inlet end of the nitrogen making machine 6 through the third port 514, then the driving gear 54 is driven to rotate anticlockwise, the piston block 58 in the first piston cylinder 51 moves upwards, the piston block 58 in the second piston cylinder 52 moves downwards, so that the nitrogen at the bottom of the second piston cylinder 52 is introduced into the bottom of the first piston cylinder 51 through the lower connecting pipe 512, and the mixed gas at the top of the first piston cylinder 51 passes through the top of the upper connecting pipe 52, forming an air guiding cycle.

Referring to fig. 5, the nozzle 55 includes a ring pipe 551, a one-way nozzle 552 and an air inlet pipe 553, the air inlet pipe 553 is connected to one side of the ring pipe 551, the air inlet pipe 553 is connected to the second port 511, the one-way nozzle 552 is uniformly installed inside the ring pipe 551, nitrogen is introduced into the ring pipe 551 through the air inlet pipe 553, and then is uniformly sprayed into the tank 1 through the one-way nozzle 552, so that all air can be rapidly discharged.

In addition, a sleeve frame 56 is fixed on the top of the tank body 1, and the rack 57 penetrates through the sleeve frame 56, so that the rack 57 is stable to lift.

1) introducing octamethylcyclotetrasiloxane and high-hydrogen silicone oil into the tank body 1 through the feeding pipe 3, fully mixing through the stirring device 2, and dehydrating for 2 hours at 80 ℃;

2) adding strong-acid macroporous ion exchange resin into the tank body 1 through a feeding pipe 3, adding a capping agent, mixing, keeping the temperature at 80 ℃, and reacting for 3 hours to obtain low-hydrogen silicone oil;

3) purifying low-hydrogen silicone oil, mixing the purified low-hydrogen silicone oil with allyl polyether in a tank body 1, keeping the temperature at 100 ℃, and reacting for 2 hours;

4) raising the temperature of the tank body 1 to 120 ℃, adding a catalyst, and reacting for 3 hours to obtain a polyurethane foam stabilizer;

The

steps

1, 2, 3 and 4 are all carried out under the nitrogen atmosphere provided by the nitrogen supply device 5 and the nitrogen making machine 6.

The working principle is as follows: the reaction materials are introduced into the tank body 1 through the feeding pipe 3, the space in the tank body 1 is continuously filled with nitrogen through the nitrogen generator 6 and the nitrogen supply device 5, the rotating motor 53 is started to drive the driving gear 54 to rotate clockwise, the rack 57 drives the piston rod 59 to move, the piston block 58 in the second piston cylinder 52 moves upwards, the piston block 58 in the first piston cylinder 51 moves downwards, the nitrogen generated by the nitrogen generator 6 enters the bottom of the second piston cylinder 52 through the fourth port 515, the mixed gas of air and nitrogen in the tank body 1 is introduced into the top of the first piston cylinder 51 through the first port 510, meanwhile, the nitrogen at the bottom of the first piston cylinder 51 is pressed and introduced into the tank body 1 through the second port 511, the mixed gas at the top of the second piston cylinder 52 is introduced into the air inlet end of the nitrogen generator 6 through the third port 514, then the driving gear 54 is driven to rotate, and the piston block 58 in the first piston cylinder 51 moves upwards anticlockwise, the piston block 58 in the second piston cylinder 52 moves downwards, so that nitrogen at the bottom of the second piston cylinder 52 is led into the bottom of the first piston cylinder 51 through the lower connecting pipe 512, mixed gas at the top of the first piston cylinder 51 is led into the top of the second piston cylinder 52 through the upper connecting pipe 513, an air guide circulation is formed, materials are mixed and stirred through the stirring device 2, full reaction is achieved, and reactants can be discharged through the discharging pipe 4.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a production facility of organosilicon class soaking agent, includes jar body (1), inlet pipe (3) and row's material pipe (4), inlet pipe (3) are installed at the top of jar body (1), row's material pipe (4), its characterized in that are installed to the bottom of jar body (1): the internally mounted of the jar body (1) has agitating unit (2) that mix the material, jar body (1) one side is installed and is supplied nitrogen device (5) to the replacement of jar body (1) inside air, it is connected with nitrogen generator (6) to supply nitrogen device (5).

2. The apparatus for producing silicone foam equalizer according to claim 1, wherein: agitating unit (2) include driving motor (21), driving gear (22), driven gear (23), holder (24), stir pole (25) and lamina (26), driving motor (21) are installed at jar body (1) top, and driving motor (21) output shaft penetrates jar body (1) internally mounted has driving gear (22), jar body (1) inside top is fixed with holder (24), holder (24) surface symmetry rotates and installs and stirs pole (25), it all is fixed with driven gear (23) on pole (25) top to stir, and driven gear (23) are connected with driving gear (22) meshing, it is fixed with lamina (26) to stir pole (25) surperficial impartial distance.

3. The apparatus for producing silicone foam equalizer according to claim 2, wherein: the blades (26) on the symmetrical surfaces of the stirring rods (25) are arranged in a staggered mode.

4. The apparatus for producing silicone foam equalizer according to claim 3, wherein: the stirring rod (25) and the blade plate (26) are both made of stainless steel materials.

5. The apparatus for producing silicone foam equalizer according to claim 1, wherein: the nitrogen supply device (5) comprises a first piston cylinder (51), a second piston cylinder (52), a rotating motor (53), a driving gear (54), a spray pipe (55), a rack (57), a piston block (58), a piston rod (59), a first port (510), a second port (511), a lower connecting pipe (512), an upper connecting pipe (513), a third port (514) and a fourth port (515), wherein the outer wall of the tank body (1) is fixedly provided with the first piston cylinder (51) and the second piston cylinder (52), the first piston cylinder (51) and the second piston cylinder (52) are internally provided with the piston block (58) in a matching way, the top of the piston block (58) is fixedly provided with the piston rod (59), the top end of the piston rod (59) is fixedly provided with the rack (57), the top of the tank body (1) is provided with the rotating motor (53), and an output shaft of the rotating motor (53) is fixedly provided with the driving gear (54), the driving gear (54) is meshed with the rack (57) and is connected with the rack (57), a lower connecting pipe (512) and an upper connecting pipe (513) are connected between the first piston cylinder (51) and the second piston cylinder (52) respectively, a first port (510) and a second port (511) are installed on the side edge of the first piston cylinder (51) respectively, a third port (514) and a fourth port (515) are installed on the side edge of the second piston cylinder (52) respectively, a spray pipe (55) is arranged on the bottom surface inside the tank body (1), the first port (510) is connected with the top of the tank body (1), the second port (511) is connected with the spray pipe (55), and the third port (514) and the fourth port (515) are connected with the air inlet end and the air outlet end of the nitrogen making machine (6) respectively.

6. The apparatus for producing silicone foam equalizer according to claim 5, wherein: and one-way valves are arranged on the surfaces of the first port (510), the second port (511), the lower connecting pipe (512), the upper connecting pipe (513), the third port (514) and the fourth port (515).

7. The apparatus for producing silicone foam equalizer according to claim 5, wherein: the spray pipe (55) comprises a ring pipe (551), a one-way spray head (552) and an air inlet pipe (553), wherein the air inlet pipe (553) is connected to one side of the ring pipe (551), the air inlet pipe (553) is connected with the second port (511), and the one-way spray head (552) is uniformly arranged on the inner side of the ring pipe (551).

8. The apparatus for producing silicone foam equalizer according to claim 5, wherein: a sleeve frame (56) is fixed at the top of the tank body (1), and a rack (57) penetrates through the sleeve frame (56).

9. The preparation method of the silicone foam stabilizer according to any one of claims 1 to 8, comprising the following steps:

1) introducing octamethylcyclotetrasiloxane and high-hydrogen silicone oil into the tank body (1) through the feeding pipe (3), fully mixing through the stirring device (2), and dehydrating for 2 hours at 80 ℃;

2) adding strong acid macroporous ion exchange resin into the tank body (1) through a feeding pipe (3), adding a capping agent, mixing, keeping the temperature at 80 ℃, and reacting for 3 hours to obtain low-hydrogen silicone oil;

3) purifying low-hydrogen silicone oil, mixing the purified low-hydrogen silicone oil with allyl polyether in a tank body (1), keeping the temperature at 100 ℃, and reacting for 2 hours;

4) raising the temperature of the tank body (1) to 120 ℃, adding a catalyst, and reacting for 3 hours to obtain a polyurethane foam stabilizer;

10. The method for preparing a silicone foam stabilizer according to claim 9, wherein the steps 1, 2, 3 and 4 are performed under a nitrogen atmosphere provided by a nitrogen supply device (5) and a nitrogen generator (6).