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- Title
封闭型水性聚氨酯合成及在 纸张表面施胶中的应用.
- Authors
段业睿; 沈一丁; 李小瑞; 刘一鹤; 杨博; 李春艳
- Abstract
A one-step polymerization method was used to prepare a closed aqueous polyurethane (BWPU) polymerized with polyethylene glycol 350 monomethyl ether (mPEG350), butanediol (BDO), dimethylolpropionic acid (DMPA), and isophorone diisocyanate (IPDI) as raw materials. The 1% BWPU and 4% PVA were compounded into a sizing solution (SSA) for paper surface sizing. The results showed that the optimized performance of BWPU could be obtained with the DMPA content of 10%, n(mPEG350) ∶n (BDO) =1∶0.2, R value of 1.8, and ethyl methyl ketone oxime (MEKO) content of 21.3%, of which the particle size was 291. 0 nm and the TSI was 1.33. After surface sizing, the paper had a better performance with the tear index of 11. 9 mN·m2/g, the stiffness of 95. 8 mN, the tensile index of 82. 6 N·m/g, the folding endurance of 3394 times, the contact angle of 79. 69°, and the sizing degree of 28.14°. Compared with the original paper, the indicators increased by 76.8%, 43.4%, 7. 8%, 71. 2%, 26. 3%, 1307. 0%, respectively. Compared with the paper sized with sizing agent on the market, the indicators increased by 20. 9%, 8. 1%, 15. 9%, 15. 2%, 10. 3%, 24. 0%, respectively.
- Subjects
METHYL ethyl ketone; POLYETHYLENE glycol; CONTACT angle; BUTANEDIOL; ISOPHORONE
- Publication
China Pulp & Paper, 2021, Issue 12, p31
- ISSN
0254-508X
- Publication type
Article
- DOI
10.11980/j.issn.0254-508X.2021.12.005