Sulfur-containing phenol formaldehyde resin and preparation method thereof

The invention provides sulfur-containing phenol formaldehyde resin and a preparation method thereof. Resin can be subjected to a reaction by taking phenol containing different substituent groups as raw materials and also can have the different sulfur contents. The molecular structure of the sulfur-containing phenol formaldehyde resin not only contains sulfur, but also contains a structure of the phenol formaldehyde resin. Sulfur can serve as a sulphur donor to achieve the crosslinking effect (such as a sulfurization reaction) and also can react with metal substances; the phenol formaldehyde resin can achieve the effects of bonding, reinforcing, insulating, high temperature resisting, corrosion resisting and the like, and therefore the phenol formaldehyde resin can be applied to the fields of rubber, plastic, paint, adhesives, printing ink, synthetic fibers, anti-corrosive and high-temperature-resisting materials, semiconductor materials and the like. The preparation method of the sulfur-containing phenol formaldehyde resin comprises the steps that phenol or alkylphenol is utilized to react with sulphur chloride to prepare a phenol or alkylphenol sulfide monomer or oligomer, the phenol or alkylphenol sulfide monomer or oligomer reacts with phenol or alkylphenol and formaldehyde under the acidic condition, and then the sulfur-containing phenol formaldehyde resin is prepared.