Synthesis of phenol formaldehyde (PF) resin for fast manufacturing laminated veneer lumber (LVL)-Reference-Cited by-同舟云学术

Synthesis of phenol formaldehyde (PF) resin for fast manufacturing laminated veneer lumber (LVL)

Published:2018-05-09 Issue:9 Volume:72 Page:745-752
ISSN:1437-434X
Container-title:Holzforschung
language:en
Short-container-title:

Author:

Hong Shu¹,Gu Zhongji¹,Chen Ling¹,Zhu Ping¹,Lian Hailan²

Affiliation:

1. College of Materials Science and Technology , Nanjing Forestry University , Nanjing 210037 , China

2. College of Materials Science and Technology , Nanjing Forestry University , Nanjing 210037 , China , Phone/Fax: +(86-25) 85427531

Abstract

Abstract Phenol formaldehyde (PF) resin is a well-tried adhesive for manufacturing laminated veneer lumber (LVL). PF has a high bonding strength, good cold pressing property and contributes a lot to the high production efficiency of LVL. In the present paper, PFs were synthesized at three different alkaline condition levels with a molar formaldehyde to phenol (F/P) ratio of 2.25. The bonding strength of PFs was not influenced by the alkalinity. Compared with PFs synthesized under alkalinity of 1 and 4%, PF with 8% alkalinity formed a resin with a high mole mass (MM), uniform mole mass distribution (MMD) and a high cross-linking density. With PF8%, the cold pressing property could be shortened from 30 to 12 min in the winter time. Cured PF8% had a higher cross-linking density than PF1% and PF4%. PF8% has a high potential for industrial production of LVL.

Publisher

Walter de Gruyter GmbH

Subject

Biomaterials

Link

https://www.degruyter.com/document/doi/10.1515/hf-2017-0184/pdf

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