CAJ | 학술논문

采用硫酸催化剂,考察了核桃壳与苯酚重量比、浓硫酸加入量、液化时间和温度对核桃壳液化的影响.研究结果表明核桃壳容易液化,随着液化的进行,核桃壳残渣率和游离酚含量降低,液化反应初期产物的分子量也迅速降低;核桃壳液化产物/苯酚/甲醛共缩聚树脂胶粘剂(WPF)与传统酚醛树脂胶粘剂(PF)的对比表明,WPF可作为胶合板用胶粘剂.
채용류산최화제,고찰료핵도각여분분중량비、농류산가입량、액화시간화온도대핵도각액화적영향.연구결과표명핵도각용역액화,수착액화적진행,핵도각잔사솔화유리분함량강저,액화반응초기산물적분자량야신속강저;핵도각액화산물/분분/갑철공축취수지효점제(WPF)여전통분철수지효점제(PF)적대비표명,WPF가작위효합판용효점제.
The liquefaction of walnut shell by using sulfuric acid as a catalyst in phenol was investigated under different ratio of walnut shell to phenol, content of catalyst, reaction time and reaction temperature. Results showed that walnut shell was rapidly liquefied under the conditions. With processing of the liquefaction, the amount of residue and free phenol decreased. The range of molecular weights of the resultants dramatically decreased in the initial stage of liquefaction, too. Comparing to the conventional PF resin adhesives, the liquefied walnut shell/phenol/formaldehyde cocondensed (WPF) resin adhesives were acceptable for plywood.