Phenolic plastic foam and production process thereof

Abstract

The invention discloses a phenolic plastic foam. The phenolic plastic foam is prepared from 600 Kg of phenol, 375 Kg of solid formaldehyde, 8 Kg of an alkali, 25 Kg of water, 5 Kg of formic acid and 25 Kg of urea. A production process of the phenolic plastic foam comprises the following steps: preparing phenolic resin glue, firstly pumping dissolved phenol into a reaction kettle, sequentially pumping paraformaldehyde and a dissolved alkali, starting to heat the solution from about 50 DEG C to 55 DEG C for 20 min, continuing to heat the solution to 65-70 DEG C for 1.5 h, and then starting heat preservation at 72-82 DEG C. The pH value of the phenolic plastic foam is superior to that of similar products at home and abroad, most of the similar products at present have the pH value of 2-3 and can be neutral only after being neutralized by ammonia water and ammonia gas, produced phenolic plastic foam changes the PH value of existing phenolic resin, the water storage capacity and the production efficiency are improved, bad gas is discharged, the pH value reaches 5-6, plant root burning is avoided, the forming speed is high, and the phenolic plastic foam can be used for fresh-keeping and seedling raising of fresh cut flowers.

Description

technical field [0001] The invention relates to the technical field of phenolic plastic foam, in particular to a phenolic plastic foam and a production process thereof. Background technique [0002] Phenolic resin is also called bakelite, also known as bakelite powder. It is commonly used in foam molding as flower arrangement mud, which plays the role of water supply for flowers. The pH value of traditional phenolic resin is around 7, which is not conducive to the preservation of flowers and contains many This kind of bad gas affects the preservation of flower arrangements, poor water absorption, slow molding speed, and the mixer used in the production of phenolic plastic foam has low work efficiency, inconvenient use, inconvenient addition of reagents, insufficient and uneven mixing, therefore, It is necessary to design a phenolic plastic foam and its production process. Contents of the invention [0003] The object of the present invention is to provide a kind of phenol...

AI Technical Summary

Problems solved by technology

[0002] Phenolic resin is also called bakelite, also known as bakelite powder. It is commonly used in foam molding as flower arrangement mud, which plays the role of water supply for flowers. The pH value of traditional phenolic resin is around 7, which is not conducive to the preservation of flowers and contains many This kind of bad gas affects the preservation of flower arrangements, poor water absorption, slow molding speed, and the mixer used in the production of phenolic plastic foam has low work efficiency, inconvenient use, inconvenient addition of reagents, insufficient and uneven mixing, therefore, It is necessary to design a kind of phenolic plastic foam and its production process

Images