Synthesis method for beta-naphthol modified phenolic resin
A technology of novolac resin and synthesis method, which is applied in the field of synthesis of B-naphthol modified phenolic resin, can solve the problems of unsatisfactory refractory effect, reduce the curing density of phenolic resin, and low fire resistance, so as to facilitate fireproof coating Application, improvement of curing characteristics, and prolonged pot life
Inactive Publication Date: 2015-09-09
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The invention discloses a synthesis method for beta-naphthol modified phenolic resin. The synthesis method comprises the following steps: adding beta naphthol and phenol in an batch reactor according to the ratio of (1:2)-(1:6), adding hydrochloric acid, wherein the mole dosage of hydrogen chloride or sulfuric acid accounts for 6-20% of that of the phenol and water is used as a solvent, heating to 80-90 DEG C, adding paraformaldehyde or a formaldehyde aqueous solution, wherein the mole dosage of formaldehyde is two times of that of the phenol. According to the invention, since beta-naphthol is used as modified material of phenolic resin, compared with common melamine, lignin or cardanol modification, the following advantages are achieved: the final bonding density of the phenolic resin is enhanced, the curing characteristic of phenolic resin is improved, and for the curing condition, high temperature curing is changed into room temperature curing; in addition, compared with original resorcinol modified phenolic resin, the beta-naphthol modified phenolic resin has the advantages that application time is obviously prolonged, and fire-proof coating construction of high-rise buildings is facilitated.
SolventBatch reactor +14
- Experimental program(1)
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