Atomization and polymerization method and device of polyoxamide

A polyoxamide, atomization polymerization technology, applied in chemical/physical/physicochemical nozzle reactors, inert gas generation, etc., can solve the problem that polyoxamide is not suitable for industrial mass production methods, and achieve guaranteed viscosity and high The effect of molecular weight, mild conditions and simple operation

Active Publication Date: 2016-04-06
DONGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] What the present invention aims to solve is that polyoxamide does not have

Method used

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  • Atomization and polymerization method and device of polyoxamide
  • Atomization and polymerization method and device of polyoxamide
  • Atomization and polymerization method and device of polyoxamide

Examples

Experimental program
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Effect test

Embodiment 1

[0037] A kind of atomization polymerization method of polyoxamide, concrete steps are: adopt above-mentioned atomization polymerization device, at room temperature, with 202.25g dibutyl oxalate (1mol), 102.18g1, 5-pentanediamine (1mol) respectively Pumped into the outer tube 2 and the inner tube 1 of the liquid sampling tube of the nozzle 5 by the oxalate feeding pump and the diamine feeding pump, the nitrogen flow enters the nozzle 5 from the gas inlet 3, and at room temperature, dibutyl oxalate and 1,5-pentanediamine is sprayed into container 4 through nozzle 5 under the effect of this nitrogen flow (the nitrogen flow velocity at nozzle exit is 14.74m / s), carries out atomization, mixing and polymerization 25min in this nitrogen flow, Obtain a polyoxamide prepolymer; treat the aforementioned prepolymer at a constant temperature of 150°C for 3 hours under the protection of nitrogen, then reduce the pressure to a pressure of less than 200Pa, raise the temperature to 250°C at a h...

Embodiment 2

[0039] A kind of atomization polymerization method of polyoxamide, concrete steps are: adopt above-mentioned atomization polymerization device, at room temperature, with 202.25g dibutyl oxalate (1mol), 100.14g1, 5-pentanediamine (0.98mol) The oxalate feeding pump and the diamine feeding pump are respectively pumped into the outer pipe 2 and the inner pipe 1 of the liquid sampling tube of the nozzle 5, and the nitrogen flow enters the nozzle 5 from the gas inlet 3. At room temperature, dibutyl oxalate and 1,5-pentanediamine are sprayed into container 4 through nozzle 5 under the effect of the nitrogen flow (the nitrogen flow velocity at the nozzle outlet is 14.74m / s), and atomization, mixing and polymerization are carried out in the nitrogen flow for 25min , to obtain a polyamide prepolymer; the aforementioned prepolymer was treated at a constant temperature of 150°C for 3 hours under the protection of nitrogen, and then decompressed to a pressure of less than 200Pa, and the tem...

Embodiment 3

[0041] A kind of atomization polymerization method of polyoxamide, concrete steps are: adopt above-mentioned atomization polymerization device, at room temperature, with 202.25g dibutyl oxalate (1mol), 104.22g1, 5-pentanediamine (1.02mol) The oxalate feeding pump and the diamine feeding pump are respectively pumped into the outer pipe 2 and the inner pipe 1 of the liquid sampling tube of the nozzle 5, and the nitrogen flow enters the nozzle 5 from the gas inlet 3. At room temperature, dibutyl oxalate and 1,5-pentanediamine are sprayed into container 4 through nozzle 5 under the effect of the nitrogen flow (the nitrogen flow velocity at the nozzle outlet is 14.74m / s), and atomization, mixing and polymerization are carried out in the nitrogen flow for 25min , to obtain a polyamide prepolymer; the aforementioned prepolymer was treated at a constant temperature of 150°C for 3h under the protection of nitrogen, then decompressed to a pressure of less than 200Pa, and the temperature ...

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Abstract

The invention provides an atomization and polymerization method of polyoxamide. The method is characterized by including the steps that, diester oxalate and diamine are pumped into the same nozzle or different nozzles through a feeding pump, atomized, mixed and polymerized in inert gas flow, and polyoxamide is obtained. The atomization and polymerization method of polyoxamide is suitable for large-scale industrial production, has the advantages that operation is easy, conditions are moderate, solvents are not used, processing is easy and cost is low, and meanwhile guarantees viscosity and high molecular weight of polyoxamide.

Description

technical field [0001] The invention belongs to the field of polymer material polymerization, and in particular relates to a method and a device for preparing polyoxamide through atomization polymerization. Background technique [0002] Since the industrialization of PA66 by DuPont in the United States in 1939, nylon has achieved remarkable development in terms of variety, output and production technology. Since the 20th century, with the continuous improvement of processing technology, the requirements for materials have become more and more stringent. In terms of electronic appliances, the lead-free solder used in the new surface mount technology SurfaceMournTechnology has increased the heat-resistant temperature of the material from the original 186°C to 215°C, which puts forward higher requirements for the high-temperature resistance and dimensional stability of the material; The field uses plastic instead of steel, so the high temperature resistant materials used aroun...

Claims

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Application Information

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IPC IPC(8): C08G69/44B01J19/26B01J19/14
CPCB01J19/14B01J19/26C08G69/44
Inventor 程聪何勇宋明陈欣谌继宗周创业李沛荣林华纲
Owner DONGHUA UNIV
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