Polydicyclopentadiene tubular mixing system
Through the design of a multi-stage tube microflower mixing system and built-in mixing components, the problem of insufficient mixing of main and auxiliary materials in the prior art is solved, and the catalyst usage is reduced and product performance is improved.
Patent Information
- Application Number
- CN201910999365.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2019-10-21
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2039-10-21
AI Technical Summary
The existing reaction injection molded PDCPD materials have shortcomings in the full mixing of main and auxiliary materials, resulting in a large amount of catalyst used and affecting product performance.
A multi-stage tube microflower mixing system is adopted. By setting up a multi-stage microflower and a hedge mixing plate on the microflower plate, the main and auxiliary materials are driven by a pneumatic valve, and a mixing element is built into the microflower to enhance the mixing effect.
It effectively reduces the amount of catalyst, improves mixing efficiency and product performance, shortens mixing time, and realizes full mixing of main materials and auxiliary materials.
Smart Images
Figure CN112757519B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a mixing system, in particular to a reaction injection molding polydicyclopentadiene tubular mixing system. Background Art
[0002] The PDCPD material processed by RIM technology has excellent mechanical properties, thermal stability and anti-aging properties, and can be widely used in automotive parts, industrial equipment and medical devices. Summary of the invention
[0003] The object of the present invention is to provide a polydicyclopentadiene tubular mixing system for reaction injection molding feed, so that the main material and the auxiliary material can be fully mixed, the amount of catalyst used is reduced, and the product performance is improved.
[0004] The technical solution of the present invention is as follows:
[0005] A polydicyclopentadiene tubular mixing system, characterized in that the system is composed of a microfluidic plate and a sealing cover plate to form an N-stage tubular microfluidic mixing system, wherein N levels of microfluidics are arranged from bottom to top in the microfluidic plate, wherein N is a positive integer greater than 3, and a corresponding level of hedging mixing plates are arranged in each level of microfluidic, but the positions of the hedging mixing plates are different, a main material inlet and an auxiliary material inlet are arranged on the bottom surface of the microfluidic plate, a mixed material outlet is arranged on the top surface of the microfluidic plate, a plurality of screw holes are arranged on the top surfaces of the microfluidic plate and the sealing cover plate for the fixing bolts to be screwed, the main material inlet and the auxiliary material inlet are both provided with a feed pneumatic valve, a plurality of mixing elements are built into the microfluidic, and sealing rings are arranged between the n-1th level microfluidic and the nth level microfluidic at the two-phase level and on the inner wall of the microfluidic plate.
[0006] The mixing element is of oblique line type, S type or X type.
[0007] The working process of the above-mentioned polydicyclopentadiene tubular mixing system is as follows:
[0008] Driven by a pneumatic valve, the main material enters the mixing system from the main material feed port, and the auxiliary material enters the mixing system from the auxiliary material feed port. The two materials are mixed through the first-stage counter-mixing plate of the first-stage microfluidic channel. The first-stage counter-mixing plate is located at 1 / 2 of the first-stage microfluidic channel. After mixing through the first-stage counter-mixing plate, they are divided into two paths and enter the second-stage microfluidic channel respectively. After passing through the second-stage microfluidic channel, they reach the second-stage counter-mixing plate. The second-stage counter-mixing plate is located at 1 / (N-1) on the right side of the second-stage microfluidic channel. After mixing through the second-stage counter-mixing plate, they are divided into two paths and enter the third-stage microfluidic channel. The third-stage counter-mixing plate is located at 1 / (N-1) on the left side of the third-stage microfluidic channel. …, after the n-th stage counter-mixing, they are divided into two paths and enter the n+1-th microfluidic channel. The n-th stage counter-mixing plate is located at n / (N-1) on the right side of the n-th microfluidic channel. …, after N-1 level counter-mixing, it enters the Nth level microfluidic channel, the Nth level counter-mixing plate is located at 1 / 2 of the Nth level microfluidic channel, and finally the mixing is completed through the Nth level counter-mixing plate, and the mixture flows out of the mixing system from the mixture outlet.
[0009] The main ingredients and auxiliary ingredients are mixed through multi-stage microchannels and counter-mixing to achieve a complete mixing effect.
[0010] The impact mixing of the main material and the auxiliary material at different positions in each microchannel can enhance the mixing effect.
[0011] The microchannels have built-in mixing elements to enhance the mixing effect.
[0012] The technical effects of the present invention are as follows:
[0013] 1. The multi-stage tubular microchannel mixing system of the present invention is suitable for the ruthenium carbene catalyst system. When the ratio of the main material to the auxiliary material is large, the amount of catalyst used can be greatly reduced, the mixing effect can be improved, and the product performance can be ensured to be excellent. Compared with the ordinary mixing method, the mixing efficiency is improved and the mixing time is reduced.
[0014] 2. After the main material and auxiliary material pass through the metering pump, they are mixed through multiple collisions at a certain pressure on the multi-stage counter-mixing plate to achieve maximum micro-mixing. Each level of the counter-mixing plate is located at a different position of the micro-channel. The two counter-flows are counter-mixed with different compositions each time, with good mixing effect and short mixing time.
[0015] 3. Each microchannel has a mixing element to enhance the mixing effect. The mixing element can be in the form of a slash, S-shaped, X-shaped, etc. The mixing element can increase the fluid mixing contact surface, form alternating flow mixing when the fluid flows through, and improve the mixing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] FIG. 1 is a perspective view of the appearance of an embodiment of a polydicyclopentadiene reaction mixing system of the present invention.
[0017] Figure 2 for Figure 1Diagram of the internal structure of the hybrid system.
[0018] Figure 3 It is a sectional left view of the polydicyclopentadiene reaction mixing system of the present invention.
[0019] Figure 4 It is a structural diagram of the microfluidic channel, which contains mixing elements.
[0020] In the figure: 1- microchannel plate, 2- sealing cover plate, 3- main material inlet, 4- auxiliary material inlet, 5- pneumatic valve, 6- fixing bolt, 7- sealing ring, 8- counter-mixing plate, 9- microchannel, 10- mixed material outlet, 11- mixing element DETAILED DESCRIPTION
[0021] The present invention will be further described below in conjunction with embodiments and drawings, but the protection scope of the present invention shall not be limited thereto.
[0022] Please refer to Figure 1 , Figure 2 , Figure 3 FIG. 1 is a perspective view of the appearance of an embodiment of a polydicyclopentadiene reaction mixing system of the present invention. Figure 2 for Figure 1 Diagram of the internal structure of the hybrid system. Figure 3 The left side view of the cross-section of the polydicyclopentadiene reaction mixing system of the present invention. In this embodiment, N=5. As can be seen from the figure, the embodiment of the polydicyclopentadiene tubular mixing system of the present invention is a five-stage tubular microfluidic mixing system composed of a microfluidic plate 1 and a sealing cover plate 2. Five levels of microfluidic channels 9 are arranged from bottom to top in the microfluidic plate 1. A corresponding level of counter-mixing plates 8 are arranged in each level of microfluidic channel, but the positions of the counter-mixing plates are different. A main material inlet 3 and an auxiliary material inlet 4 are arranged on the bottom surface of the microfluidic plate 1, and a mixed material outlet 10 is arranged on the top surface of the microfluidic plate 1. A plurality of screw holes are arranged on the top surfaces of the microfluidic plate 1 and the sealing cover plate 2 for the fixing bolts 6 to be screwed. The main material inlet 3 and the auxiliary material inlet 4 are both provided with a feed pneumatic valve 5. The microfluidic channel 9 has a plurality of mixing elements 11 built in (see Figure 4 ), a sealing ring 7 is provided between the n-1th microchannel 9 and the nth microchannel of the two-phase level and on the inner wall of the microchannel plate 1.
[0023] The mixing element 11 is of an oblique line shape, an S shape or an X shape.
[0024] See also Figure 2 The working process of the above-mentioned polydicyclopentadiene tubular mixing system is as follows:
[0025] The main material enters the mixing system from the main material feed port 3, and the auxiliary material enters the mixing system from the auxiliary material feed port 4. The two materials pass through the first-stage microfluidic channel 9a and are mixed through the first-stage counter-mixing plate 8a. After mixing, they enter the second-stage microfluidic channel 9b in two ways, and then reach the second-stage counter-mixing plate 8b after passing through the second-stage microfluidic channel 9b. The second-stage counter-mixing plate 8b is located at the right 1 / 4 of the second-stage microfluidic channel. After being mixed by the second-stage counter-mixing plate, the materials enter the third-stage microfluidic channel 9c in two ways. The third-stage counter-mixing plate 8c is located at 1 / 4 of the right side of the third-stage microfluidic channel 8c. After being mixed by the third-stage counter-mixing plate 8c, the materials enter the fourth-stage microfluidic channel 9d in two ways. The fourth-stage counter-mixing plate 8d is located at 1 / 4 of the right side of the fourth-stage microfluidic channel 9d. After being mixed by the fourth-stage counter-mixing plate 8d, the materials enter the fifth-stage microfluidic channel 9e. Finally, the materials are mixed by the fifth-stage counter-mixing plate 8e. The fifth-stage counter-mixing plate 8e is located at 1 / 2 of the fifth-stage microfluidic channel 9e. The mixture flows out of the mixing system from the mixture outlet 10.
[0026] The use of the present invention is as follows:
[0027] (1) Prepare main and auxiliary materials
[0028] The molar ratio of dicyclopentadiene to the catalyst is 10000:1.
[0029] Main ingredients: Weigh dicyclopentadiene and ethylidene norbornene in a ratio of 95:5, add 0.01%-2% antioxidant o-di-tert-butyl-p-methylphenol (based on the mass of dicyclopentadiene) under nitrogen protection, stir well in a low-temperature reaction bath, and control the temperature at 10-30°C.
[0030] Excipients: Weigh 424.5 mg of Grubbs second generation catalyst and dissolve it in 10.6 ml of dichloromethane to prepare a 40 mg / ml solution.
[0031] (2) Mixed curing molding
[0032] The main material and the auxiliary material are pumped into a multi-stage tubular mixing system with a metering pump under nitrogen protection for rapid mixing, and then injected into the reaction mold through the mixed material outlet 10. The mold begins to be programmed to heat up, maintaining the reaction temperature at 60°C for 1 hour, and the post-treatment temperature is 140°C for 1 hour.
[0033] After the mold is cooled, the product is demoulded to obtain the product.
[0034] Experiments show that;
[0035] 1. The multi-stage tubular microchannel mixing system of the present invention is suitable for the ruthenium carbene catalyst system. When the ratio of the main material to the auxiliary material is large, the amount of catalyst used can be greatly reduced, the mixing effect can be improved, and the product performance can be ensured to be excellent. Compared with the ordinary mixing method, the mixing efficiency is improved and the mixing time is reduced.
[0036] 2. After the main material and auxiliary material pass through the metering pump, they are mixed through multiple collisions at a certain pressure on the multi-stage counter-mixing plate to achieve maximum micro-mixing. Each level of the counter-mixing plate is located at a different position of the micro-channel. The two counter-flows are counter-mixed with different compositions each time, with good mixing effect and short mixing time.
[0037] 3. Each microchannel has a mixing element to enhance the mixing effect. The mixing element can be in the form of a slash, S-shaped, X-shaped, etc. The mixing element can increase the fluid mixing contact surface, form alternating flow mixing when the fluid flows through, and improve the mixing efficiency.
Claims
1. A polydicyclopentadiene tubular mixing system, characterized in that: The system is composed of a microfluidic plate (1) and a sealing cover plate (2) to form an N-stage tubular microfluidic mixing system. N levels of microfluidic channels (9) are arranged from bottom to top in the microfluidic plate (1). A corresponding level of counter-mixing plates (8) are arranged in each level of microfluidic channel, but the positions of the counter-mixing plates are different, wherein N is a positive integer greater than 3. A main material inlet (3) and an auxiliary material inlet (4) are arranged on the bottom surface of the microfluidic plate (1). A mixed material outlet (10) is arranged on the top surface of the microfluidic plate (1) and the sealing cover plate (2), a plurality of screw holes are arranged on the top surfaces of the microfluidic plate (1) and the sealing cover plate (2) for screwing fixing bolts (6), the main material inlet (3) and the auxiliary material inlet (4) are both provided with a feed pneumatic valve (5), the microfluidic channel (9) is built with a plurality of mixing elements (11), and a sealing ring (7) is arranged between the n-1th microfluidic channel (9) and the nth microfluidic channel of the two-phase level and on the inner wall of the microfluidic plate (1); The main material enters from the main material inlet, and the auxiliary material enters from the auxiliary material inlet. The two materials are mixed through the first-stage counter-mixing plate of the first-stage microfluidic channel. The first-stage counter-mixing plate is located at 1 / 2 of the first-stage microfluidic channel. After being mixed by the first-stage counter-mixing plate, the two materials enter the second-stage microfluidic channel in two ways. After passing through the second-stage microfluidic channel, they reach the second-stage counter-mixing plate. The second-stage counter-mixing plate is located at 1 / (N-1) on the right side of the second-stage microfluidic channel. After being mixed by the second-stage counter-mixing plate, the two materials enter the third-stage microfluidic channel in two ways. The third-stage counter-mixing plate is located at 1 / (N-1) on the left side of the third-stage microfluidic channel. …, after the nth level of hedging and mixing, they enter the n+1th level microfluidic channel in two ways, and the nth level of hedging and mixing plate is located at n / (N-1) on the right side of the nth level of microfluidic channel, …, after the N-1th level of hedging and mixing, they enter the Nth level of microfluidic channel, and the Nth level of hedging and mixing plate is located at 1 / 2 of the Nth level of microfluidic channel, and finally, they are mixed through the Nth level of hedging and mixing plate, and the mixture flows out from the mixture outlet.
2. The polydicyclopentadiene tubular mixing system according to claim 1, characterized in that: The mixing element (11) is of an oblique line type, an S type or an X type.
Citation Information
Patent Citations
Polydicyclopentadiene tubular mixing system
CN211415844U