Device and process for preparation of melamine formaldehyde foam

A technology of melamine formaldehyde and melamine, which is used in household components, household appliances, other household appliances, etc., can solve the problems of large reaction heat, difficult to realize industrialized continuous reaction, and high viscosity of melamine formaldehyde reaction system, and can control the reaction time. Effect

Inactive Publication Date: 2015-02-04
TIANHUA INST OF CHEM MACHINERY & AUTOMATION
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the viscosity of the melamine-formaldehyde reaction system is high, the heat of reaction is large, and the required reaction time is short, so it is difficult to realize industrial continuous reaction.

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
  • Device and process for preparation of melamine formaldehyde foam

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] The present invention will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not have any limiting effect on the protection scope of the present invention.

[0017] like figure 1 The shown device for preparing melamine formaldehyde foam includes two melamine reaction kettles 1, a single-screw extruder 2, a metering feeder 3, a reactive twin-screw extruder 4, a sheet head 5, a microwave generator Bubble device 6, melamine reactor 1 effective volume 1 m 3 ; single screw extruder 2 screw diameter 120mm; melamine reaction kettle (2 units) 1 connected in parallel with single screw extruder 2, and connected with metering feeder 3 through a hopper, the screw diameter of metering feeder 3 is 65 mm; the metering feeder 3 is connected to the reactive twin-screw extruder 4 with the motor, gear box, frame and body as a whole. Reaction type twin-screw extruder 4 has a screw diameter ...

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 device and process for preparation of melamine formaldehyde foam, the device comprises melamine reactors, a single screw extruder, a metering feeder, a reaction type twin-screw extruder, a sheet machine head and a microwave foaming device, which are connected in sequence, the number of the melamine reactors is two, and the melamine reactors are arranged in parallel. The device can effectively and timely remove a large amount of heat of reaction when melamine and formaldehyde react, so that the reaction is performed in a smooth and controlled manner, and a melamine formaldehyde foam product with stable quality can be continuously produced.

Description

technical field [0001] The invention relates to the technical fields of reactive extrusion technology and plastic foaming, in particular to a device and a process for preparing melamine formaldehyde foam. Background technique [0002] Melamine is a basic organic chemical intermediate product with a wide range of uses. After mixing melamine and formaldehyde, it can be made into melamine formaldehyde foam through foaming reaction. This foam is non-flammable, water-resistant, heat-resistant, aging-resistant, arc-resistant, chemical-resistant, has good insulation properties, gloss and mechanical strength, and at the same time It also has excellent sound-absorbing effect. Therefore, it is widely used in sound absorption and flame retardant in buildings, automobiles and even aircraft carriers, submarines, etc. [0003] However, the melamine-formaldehyde reaction system has high viscosity, large reaction heat, and requires short reaction time, which makes it difficult to realize ...

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 Applications(China)
IPC IPC(8): B29C69/02B29C47/40B29L31/60
Inventor 张国强龚少立何振鹏师燕燕曾天忠彭涛俞长庚马永金王英
Owner TIANHUA INST OF CHEM MACHINERY & AUTOMATION
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