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Phenolic resin is widely used today in many fields , but its brittleness , high water absorption , the shortcomings of poor heat resistance , the use of phenolic resin subject to certain restrictions . For this reason, one of the phenolic resin modified has become a hot research field , already with high mechanical strength , high heat resistance , high electrical insulation properties , flame retardant , low smoke and low toxicity of the modified phenolic resin . Continue to broaden the applications of phenolic resin , phenolic resin with the deepening of research , high-performance modified phenolic resin will play a greater role in many areas . In review at home and abroad phenolic resin structure modified blending modification research status on the basis of from many modified method , select the synthesis and modification of new phenolic resin , and to carry out the following work : 1 use ethers and phenol in Ephesians - Clinton catalyst presence of condensation, the resulting resin known as the new phenol resin or polyethylene phenol ether resin . Using FTIR and 1 H - NMR , GPC , DSC , TGA , etc. by means of the analysis . The results show that the synthetic phenol resin has a higher heat resistance, chemical resistance and seizing resistance . 2 Laboratory homemade phenol resin allyl , allyl phenol resin , and were characterized using FTIR, H-NMR, DSC and other means . 3 allyl phenol resin , bismaleimide (BMI) are copolymerized , addition-curable resin system , to obtain a stable and uniform product prepolymerized . FTIR , DSC , TGA , and other means of analysis, the results show that the the resulting thermosetting modified phenolic resin heat resistance has been improved .
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