Novel preparation and continuous production method of melamine resin

A melamine and resin technology, applied in the field of melamine resin preparation, can solve the problems of impossible use of resin, easy to thicken and agglomerate, poor stability, etc., and achieve the effect of promoting fusion and collision, not easy to thicken and agglomerate, and stable in performance

Inactive Publication Date: 2012-10-03
戴新春
View PDF2 Cites 26 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, the research on melamine resin has shown a phenomenon of flourishing, and new achievements continue to emerge. Several domestic manufacturers have used melamine resin for plastic foaming and fiber production, but water-soluble modified silicone, phase transfer catalyst, The use of fluorinated polyether polyols, quantitative delivery of resin by gear metering pumps, and continuous production of heating and polycondensation reactions by heating screw machines have not been reported yet.
Some domestic manufacturers of melamine foamed plastics and fibers all use a formula system for the production of melamine resin. The resin produced by this system has the following obvious disadvantages for foaming and fiber production: improper selection of reaction catalysts, and difficulty in controlling the end point of the reaction Grasp, and the molecula

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Novel preparation and continuous production method of melamine resin
  • Novel preparation and continuous production method of melamine resin
  • Novel preparation and continuous production method of melamine resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015]

[0016] Mix the above raw materials, add the raw materials according to the weight ratio into the mixing kettle, and stir evenly. After the feeding is completed, open the mixing tank and stir to 120rpm. The stirring time is 15 minutes, then open the feeding valve of the mixing tank, and use the gear metering pump to quantitatively transport the resin into the heating screw machine. The gear metering pump delivers quantitatively at 2.6 kg per minute. The premixed material is heated to 110°C in the heating screw machine, and the speed of the heating screw machine is set at 160rpm at the same time. Under the action of electric heating in the screw, the reaction material is continuously and stably heated, reacts quickly, and enters the cooling screw machine after 15 minutes. The rotating speed of the cooling screw machine is set at 160 rpm, the temperature of the cooling circulating fluid of the cooling screw machine is -17° C., the melamine resin is cooled to 22° C., an...

Embodiment 2

[0018]

[0019] Mix the above raw materials, add the raw materials according to the weight ratio into the mixing kettle, and stir evenly. After the feeding is completed, open the mixing tank and stir to 100rpm. The stirring time is 12 minutes, then open the feeding valve of the mixing tank, and use the gear metering pump to quantitatively transport the resin into the heating screw machine. The gear metering pump is quantitatively delivering at 2.2 kg per minute. The premixed material is heated to 106°C in the heating screw machine, and the speed of the heating screw machine is set at 156rpm at the same time. Under the action of electric heating in the screw, the reaction material is continuously and stably heated, reacts quickly, and enters the cooling screw machine after 16 minutes. The rotating speed of the cooling screw machine is set at 130 rpm, the temperature of the cooling circulating fluid of the cooling screw machine is -19° C., the melamine resin is cooled to 30° C...

Embodiment 3

[0021]

[0022]

[0023] Mix the above raw materials, add the raw materials according to the weight ratio into the mixing kettle, and stir evenly. After the feeding is completed, open the mixing tank and stir to 109rpm. The stirring time is 14 minutes, then open the feeding valve of the mixing tank, and use the gear metering pump to quantitatively transport the resin into the heating screw machine. The gear metering pump quantitatively delivers 2.9 kg per minute. The premixed material is heated to 90°C in the heating screw machine, and the speed of the heating screw machine is set at 136rpm at the same time. Under the action of electric heating in the screw, the reaction material is continuously and stably heated, reacts quickly, and enters the cooling screw machine after 10 minutes. The rotation speed of the cooling screw machine is set at 110 rpm, the temperature of the cooling circulating fluid of the cooling screw machine is -12° C., the melamine resin is cooled to 35...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a novel preparation and continuous production method of melamine resin. The melamine resin comprises 0-5 parts of water-soluble modified organic silicon, 0-10 parts of fluorinated polyol, 10-50 parts of melamine, 20-50 parts of formaldehyde, 5-30 parts of modifier, 0.1-5 parts of combined phase transfer catalyst, 10-50 parts of desalted water, and 0-20 parts of sodium hydroxide. The preparation and continuous production method includes the steps of firstly, mixing the materials; secondly, quantitatively conveying for feeding the materials; thirdly, heating for polycondensation; and fourthly, cooling and controlling temperature. The melamine resin produced by the preparation and continuous production method is long in shelf life, high in dispersibility, less prone to caking, stable in performance and the like, and is quite applicable to stable production of melamine resin foamed plastic by an industrial microwave and melamine resin fiber by spinning of a screw machine from melamine resin.

Description

technical field [0001] The invention relates to a method for preparing melamine resin, in particular to a method for preparing and continuous production of melamine resin. Background technique [0002] In the past fifty years, the development of melamine resin has continued to deepen, and its application has become more and more extensive. In recent years, the research on melamine resin has shown a phenomenon of flourishing, and new achievements continue to emerge. Several domestic manufacturers have used melamine resin for plastic foaming and fiber production, but water-soluble modified silicone, phase transfer catalyst, The use of fluorinated polyether polyols, the quantitative delivery of resins by gear metering pumps, and the continuous production of heating and polycondensation reactions by heating screw machines have not been reported yet. Some domestic manufacturers of melamine foamed plastics and fibers all use a formula system for the production of melamine resin. ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C08G12/40C08G12/32
Inventor 戴新春李晓明刘月云吴爱华王爱霞
Owner 戴新春
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap