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Modified foaming phenolic resin and manufacturing method thereof

A technology for foaming phenolic resin and its manufacturing method, which is applied in the field of phenolic resin and its production, and can solve the problems of environmental pollution of waste water, low strength of phenolic resin foam, and failure to meet the requirements for the use of wall insulation materials, so as to improve the strength and toughness, the effect of environmental protection

Inactive Publication Date: 2011-02-02
苏州美克思科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As we all know, the discharge of waste water will definitely cause environmental pollution
Moreover, the phenolic resin foam produced by this method has low strength and cannot meet the requirements for use as a wall insulation material.
Furthermore, there is no phenolic resin that is environmentally friendly and specially used for wall foam materials in the market at this stage.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The manufacturing method of the modified foamed phenolic resin: firstly, 100 mole fraction of phenol and 80 mole fraction of paraformaldehyde are prepared. At the same time, prepare 15 mole fractions of melamine as a modifier, and 4 mole fractions of ammonia water as a catalyst.

[0023] Subsequently, the raw materials in the above proportions are respectively added into the reaction kettle and stirred evenly. Thereafter, the heating was stopped after heating to 60°C. Next, the temperature was kept at normal pressure for 5 hours.

[0024] Finally, the reaction is stopped, and the temperature of the materials in the reactor is lowered to obtain the desired modified foamed phenolic resin.

[0025] 〖Embodiment 2〗

[0026] The manufacturing method of the modified foamed phenolic resin, the process is roughly as follows: First, prepare 100 mole fraction of phenol and 86 mole fraction of paraformaldehyde. At the same time, prepare 20 mole fraction of dipolycyanamide as mo...

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PUM

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Abstract

The invention relates to a modified foaming phenolic resin and a manufacturing method thereof. The modified foaming phenolic resin comprises the following raw materials: phenol with mole fraction of 100, paraformaldehyde with mole fraction of 80-100, a modifier with mole fraction of 10-20, and a catalyst with mole fraction of 0.5-8. The preparation method comprises the steps of: adding the raw materials in a reaction kettle to mix up; heating to a temperature of 50-80 DEG C and stopping heating, and preserving the temperature for 2-10 hours; and stopping the reaction and cooling to obtain the product. In the invention, cyanamide and amide modifiers are added to improve the strength and the tenacity of the synthetic resin; meanwhile, the formaldehyde solution is replaced by the paraformaldehyde and wastewater containing phenol and aldehyde cannot be generated in the manufacturing process, therefore, the defect that wastewater is generated in the common manufacturing technology is overcome, and the manufacturing process is more environmental-friendly. More significantly, the strength of the phenolic foam manufactured by using the modified foaming phenolic resin can satisfy the demand of the wall heat preservation material.

Description

technical field [0001] The invention relates to a phenolic resin and a preparation method thereof, in particular to a modified foamed phenolic resin and a preparation method thereof. Background technique [0002] Ordinary foaming phenolic resins are mostly synthesized by the synthesis method of thermosetting phenolic resins. Specifically, it is prepared by polymerizing phenol and excess formaldehyde aqueous solution (37% aqueous solution) under the catalysis of alkaline substances (such as ammonia water, sodium hydroxide, barium hydroxide, etc.). Vacuum dehydration is required in the production process, resulting in waste water containing phenol and aldehyde. As we all know, the discharge of waste water will definitely cause environmental pollution. Moreover, the phenolic resin foam produced by this method has low strength and cannot meet the requirements for use as a wall insulation material. Furthermore, there is no phenolic resin that is environmentally friendly and sp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G8/28C08G8/10
Inventor 杨金平李商庆
Owner 苏州美克思科技发展有限公司
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