Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of microwave continuous foaming preparation system and method of melamine foamed plastics

A technology of melamine and foam plastics, applied in the field of microwave continuous foaming preparation system of melamine foam plastics, can solve the problems of poor removal effect of low-molecular harmful substances, low production efficiency of foam products, increased production costs, etc., and achieve operability Strong, reduced formaldehyde content, and improved production efficiency

Active Publication Date: 2019-07-02
CHENGDU ORGANIC CHEM CO LTD CHINESE ACAD OF SCI
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The microwave source of the microwave foaming system in the prior art adopts a commercial-grade application frequency of 2450MHz; the foaming agent in the tail gas is directly burned into the incinerator, which wastes resources; the hot air system uses hot air from the bottom of the system to enter the top The conventional way of discharge not only wastes energy but also has poor removal effect on low molecular harmful substances, especially formaldehyde; the foaming section and transition section are fed with hot N 2 , increasing the production cost; the production efficiency of high-density foam products is very low

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
  • A kind of microwave continuous foaming preparation system and method of melamine foamed plastics
  • A kind of microwave continuous foaming preparation system and method of melamine foamed plastics
  • A kind of microwave continuous foaming preparation system and method of melamine foamed plastics

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～12

[0056] The special resin with a viscosity of 30000-35000mpa.s is used at a rate of 3000-9000g per minute, a composite surfactant (such as a mixture of sodium dodecylbenzenesulfonate and alkylphenol polyoxyethylene ether) 200-500g, HFE7200 / HFE7100 / Add 100-360g of HFE71IPA composite foaming agent and 200-450g of cross-linking agent formic acid into the twin-screw extruder with condensing device quantitatively, and then make a foaming liquid through a high-speed mixing head. After the foaming liquid is distributed by a distributor, it enters the microwave The frequencies are 915MHz (the drying system has no microwave, example 1, 4, 12), 915MHZ (the foaming system uses 915MHZ frequency microwave, the drying system uses 2450MHZ frequency, example 11), 915MHZ / 2450MHZ combination (the foaming system uses 915MHz / 2450MHz Combined frequency microwave, drying system without microwave, example 3, 9), 915MHZ / 2450MHZ combination (foaming system uses 915MHz / 2450MHz combined frequency microwa...

Embodiment 13

[0061] Foam the special resin with a viscosity of 30000-35000mpa.s at 9000g per minute, compound surfactant (such as sodium dodecylbenzenesulfonate and alkylphenol polyoxyethylene ether mixture) 500g, HFE7200 / HFE7100 / HFE71IPA Agent 360g, crosslinking agent formic acid 450g quantitatively add the twin-screw extruder with condensing device, then make foaming liquid through high-speed mixing head, foaming liquid adopts the method of the present invention and the method of CN104029326A to prepare foam respectively, the foam product The properties are shown in Table 2.

[0062] The foam properties prepared by different methods of table 2

[0063]

[0064] As can be seen from the data in Table 2, the effect of the present invention is better than that of the comparative example.

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

PropertyMeasurementUnit
viscosityaaaaaaaaaa
Login to View More

Abstract

The invention discloses a microwave continuous foaming preparation system and method of melamine foamed plastics. The preparation system is composed of a microwave foaming system, a hot air system, and a foaming agent recovery system; the microwave foaming system is composed of a cloth section, a foaming section, and a transition section connected in sequence; the hot air system includes: a post-crosslinking / drying section, and a cooling section , the first heat exchanger, the second heat exchanger and the hot blast stove; the foaming agent recovery system includes: a condenser, a mist eliminator, and an adsorber, and the outlet of the second heat exchanger is connected to the condenser, the mist eliminator, and the adsorber in turn. The method includes: the foaming liquid passes through a cloth section, a foaming section, a transition section, a post-crosslinking / drying section and a cooling section in sequence to prepare a melamine foam product. The formaldehyde content of the foamed plastics and foams prepared by the invention is further reduced, the blowing agent is recycled, the resource recycling is realized, the production process is simplified, the production efficiency is greatly improved, the production cost is reduced, and the operability is stronger.

Description

technical field [0001] The invention relates to the field of melamine foamed plastics, in particular to a microwave continuous foaming preparation system and method for melamine foamed plastics. Background technique [0002] Melamine foam is an intrinsically high flame-retardant foam material, because of its excellent sound absorption, noise reduction, heat insulation, high temperature resistance, low smoke rate, chemical corrosion resistance, convenient post-processing, etc. Performance, without adding any flame retardants, it can meet the B1 low flammability material standard stipulated in DIN4102 (German standard) and the UL94-V0 (American Insurance Association standard) high flame retardant material standard. It is widely used in more and more fields such as architectural decoration, public places, electromechanical equipment, and transportation vehicles. [0003] The performance of melamine foam is determined by three main factors: resin synthesis process, foaming liqu...

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
Patent Type & Authority Patents(China)
IPC IPC(8): B29C44/34
CPCB29C44/3415B29C44/3442B29C44/35
Inventor 刘绍英王公应李子健
Owner CHENGDU ORGANIC CHEM CO LTD CHINESE ACAD OF SCI