Toughening and Low Temperature Rapid Curing Modification of Phenol Formaldehyde Resin

LI Meng; ZHANG Ting; GU Ji-you; GAN Wei-xing; MA Lu; GAO Zhen-zhong

doi:10.12326/j.2096-9694.2020066

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Toughening and Low Temperature Rapid Curing Modification of Phenol Formaldehyde Resin
1.College of Materials and Energy，South China Agricultural University，Guangzhou 510642，Guangdong，China
2.Suofeiya Home Collection Co.Ltd，Guangzhou 511358，Guangdong，China
3.College of Materials Science and Engineering，Northeast Forestry University，Harbin 150040，Heilongjiang，China
4.School of Resources，Environment and Materials，Guangxi University，Nanning 530004，Guangxi，China
5.Guangxi Sunway Forest Products Industry Co.Ltd，Wuzhou 543001，Guangxi，China
Vol. 35, Issue 3, Pages: 65-70(2021)
DOI： 10.12326/j.2096-9694.2020066

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李锰,张挺,顾继友等.热固性酚醛树脂增韧及低温快速固化改性研究[J].木材科学与技术,2021,35(03):65-70.

LI Meng,ZHANG Ting,GU Ji-you,et al.Toughening and Low Temperature Rapid Curing Modification of Phenol Formaldehyde Resin[J].Chinese Journal of Wood Science and Technology,2021,35(03):65-70.
李锰,张挺,顾继友等.热固性酚醛树脂增韧及低温快速固化改性研究[J].木材科学与技术,2021,35(03):65-70. DOI： 10.12326/j.2096-9694.2020066.

LI Meng,ZHANG Ting,GU Ji-you,et al.Toughening and Low Temperature Rapid Curing Modification of Phenol Formaldehyde Resin[J].Chinese Journal of Wood Science and Technology,2021,35(03):65-70. DOI： 10.12326/j.2096-9694.2020066.

摘要

采用丁腈橡胶（NBR）作为增韧剂与酚醛树脂发生共聚反应制备改性酚醛树脂（NBR-PF），并以碳酸二甲酯（DMC）作为固化剂与改性酚醛树脂复合，制备低温条件快速固化且具有优良韧性的改性酚醛树脂。结果表明：当NBR添加量为6%时，改性酚醛树脂的冲击强度达到5.62 kJ/m,2,，较对照组提升了约60%；在此基础上，当DMC添加量为5%~6%时，改性酚醛树脂在120 ℃条件下固化，凝胶时间为4.89~5.25 min，II类胶合强度为1.43~1.48 MPa。

Abstract

Thermosetting phenolic resin (NBR-PF) were modified by using nitrile rubber (NBR) as toughening agent and dimethyl carbonate (DMC) as curing agent respectively, which can be cured quickly at low temperature with excellent toughness. The results showed that the impact strength of resin reached 5.62 kJ/m,2, when the amount of NBR was 6%. On this basis, when the amount of DMC was 5%~6%, the modified phenolic resin could achieve a shorter curing time (4.89~5.25 min) and a higher bonding strength (class II bonding strength 1.43~1.48 MPa) at 120 ℃.

关键词

酚醛树脂丁腈橡胶碳酸二甲酯固化性能冲击强度胶合强度

Keywords

phenol formaldehyde resinnitrile rubberdimethyl carbonatecuring propertiesimpact strengthbonding strength

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