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Method for preparing amino plastic

A technology of amino plastics and basic raw materials, which is applied in the field of plastic production technology and can solve problems such as complex operations, low strength of finished products, and discontinuity

Inactive Publication Date: 2009-02-11
任志广
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The various processes of this process are discontinuous, the operation is complicated and cumbersome, the energy consumption is high, the time-consuming is long, the production process is not closed, the dust and waste gas will pollute the environment, the strength of the finished product is not high, and the content of free formaldehyde in the product is high.

Method used

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  • Method for preparing amino plastic
  • Method for preparing amino plastic

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Embodiment Construction

[0009] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0010] 1, according to the process flow, vacuum granulation process A is first performed: the reactor motor 27 is turned on for stirring 1, the air compressor 25 is turned on to send air 2, and then 3 is fed into the inlet of the vacuum granulation reactor 30. The basic raw materials of feed 3 include: urea N, formaldehyde P; additives include: urotropine P, melamine S, dispersant F, lubricant H, curing agent G, magnesium carbonate M, and zinc oxide Y; auxiliary materials include: filling Material T (using cut fiber paper), pigment L (optional according to needs). Feeding while stirring, all the raw materials are fed, the feed port of the vacuum granulation reactor 30 is sealed 4, and then the vacuum pump 33 is turned on to perform vacuum extraction 5, and at the same time, circulating hot water 6 is sent for heating and heat preservation. Keep ...

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Abstract

The invention discloses a method for preparing amino plastics, which includes the following steps: a vacuum granulation reaction kettle (30) and auxiliary facilities thereof are adopted, carbamide (N) and formaldehyde (Q) are taken as basic raw materials, additives and accessories are added, a continuous technological process is carried out and finished products of amino plastics (Z) is obtained. A vacuum granulation technological process (A) comprises: stirring (1), inletting air (2), feeding materials (3), sealing a feed inlet (4), vacuum pumping (5), sending circulating hot water (6), high-speed stirring (7), low-speed stirring (8), sending circulating cold water (9), breaking vacuum and inletting air (10), stopping vacuum pumping (11) and discharging (12). A crushing and screening technological process (B) comprises: crushing materials (13), feeding materials by air pipes (14), crushing materials (16), rough screening of materials (17), close sizing of materials (18) and feeding materials (19). A flaking and granulating technological process (C) comprises: materials go through a granulating hopper (20) and enter a granulating machine for flaking and granulating. The whole technological process is carried out automatically under a closed condition, thereby having good product quality and high production efficiency and causing no environmental pollution.

Description

Technical field [0001] The invention relates to a plastic production process, in particular to an amino plastic production process. Background technique [0002] Amino plastic (also known as electric jade powder) is a widely used thermosetting plastic. Because of its self-extinguishing, arc resistance, good insulation, stable product size, and bright color, it is widely used in electronics, electrical appliances, automobiles, Machinery, daily utensils and other industries. In recent years, due to the shortage of resources, rising energy prices and the unique properties of amino molding compounds, it has a broad market space for replacing plastics, household ceramics, wood, and metals. The market demand is increasing at a rate of 20% per year. Development prospects good. At present, the domestic production process of aminoplast continues the method of the Soviet Union in the early stage. First, urea, melamine and formaldehyde are formed into resin in the reactor, and then fully mi...

Claims

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Application Information

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IPC IPC(8): C08G12/38C08L61/30B29B13/10B29B9/04
Inventor 郭锋任志广
Owner 任志广