Preparation process of high foaming phenolic resin foam material

Abstract

The invention discloses a preparation process of a high foaming phenolic resin foam material. The preparation process comprises the following steps of: adding 90% to 92% by mass of thermosetting phenolic resin liquid, 4% by mass of Zn powder and 4% to 6% by mass of HMTA (hexamethylenetetramine) to a container for uniformly stirring, and heating and continuously stirring after uniformly stirring; and heating to 50 to 65 DEG C, and obtaining the phenolic resin foam material after 1 to 2 minutes of curing reaction. By adopting the process, the phenolic resin foam material with 8 to 10 times of foaming times can be prepared, the process is simple, and the cost is low.

Description

technical field [0001] The invention relates to a preparation process of a phenolic resin foam material, which belongs to the field of polymer materials. Background technique [0002] Phenolic resin foam has special excellent performance in flame retardancy. Its light weight, high rigidity, good dimensional stability, chemical corrosion resistance, good heat resistance, flame retardant, self-extinguishing, low smoke, is an ideal insulation material. The test results show that the foam material can be obtained by adding foaming agent during the curing process of phenolic resin. At present, the components of the phenolic resin foam materials that have been obtained are very different, and the foaming mechanisms are different: researchers from Japan's Asahi Chemical Company reported in 2004 that the use of phenolic resin, CO 2 phenolic resin foam with high closed cell content and catalyst mixture; in 2008, Bu Gi Kim et al. prepared phenolic resin insulating foam [Bu Gi Kim, D...

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Problems solved by technology

At present, the components of the phenolic resin foam materials that have been obtained are very different, and the foaming mechanisms are different: researchers from Japan's Asahi Chemical Company reported in 2004 that the use of phenolic resin, CO 2 phenolic resin foam with high closed cell content and catalyst mixture; in 2008, Bu Gi Kim et al. prepared phenolic resin insulating foam [Bu Gi Kim, Dai Gil Lee. Development of microwavefoaming method for phenolic insulation foams[J]. Journal of Materials Processing Technology, 2008, 201 (123): 7162719], but these methods require higher equipment and higher costs, which are not conducive to industrial promotion