Application of Urea-Formaldehyde Oligomer for Quality Improvment of Paper and Cardboard Products

Complete text of the article:

Download article (pdf, 0.5MB )

UDС

676.064.2:655.1

DOI:

10.37482/0536-1036-2020-6-182-193

Abstract

The applicability of the developed binary system of synthetic compounds in coating paste, consisting of urea-formaldehyde oligomer (2 pts. wt. to the coating paste weight) and latex (16 pts. wt.), is found. It replaces the generally used complex of natural compounds, such as modified starch (3 pts. wt.), Na-CMC (2 pts. wt.), and casein glue (1 pts. wt.), in the presence of latex (16–32 pts. wt.). The properties of the coating paste samples met the standards, as evidenced by the viscosity according to the viscometer VZ-4 (13–17 s), the content of dry substances (50–54 %) and pH (9.0–10.5). The proposed urea-formaldehyde oligomer is combined with the present components and, as compared to natural compounds, does not increase the viscosity of the coating paste, has a high cohesive force, participating in the binding of pigment particles with one another, has the necessary adhesive capacity for ensuring a stable bond of the applied coating layer with the surface of paper and cardboard, does not prevent the uniform distribution of pigment particles on the base surface, and gives stability to the coating paste. These phenomena can be explained by the supplementary presence of positively charged nitrogen-containing groups (amine and amide) in the urea formaldehyde oligomer. The latter contribute to the enhancement of cohesive and adhesive interactions in coating pastes and coatings composed of them. Assessment of a section of the coated paper (cardboard) showed that one part of the binder adjoins the base (paper, cardboard) penetrating into its pores and capillaries, the other surrounds the pigment particles, and the third occupies (completely or partially) the spaces between the particles. An increase in the surface resistance to plucking and breaking length by 6.0–8.5 and 15–20 %, respectively, is shown on the samples of light-coated newsprint and polygraphic cardboard. This allows considering the urea-formaldehyde oligomer as an alternative to natural compounds. Herewith, whiteness (85–87 %) and smoothness (250–265 s) meet the requirements. Changing the formulation of the coating paste is economically justified, since material costs for the production of coated paper and cardboard products are reduced by 1–2 %.

Authors

N.V. Chornaya¹, Doctor of Engineering, Prof.; ORCID: https://orcid.org/0000-0002-8306-8590
N.I. Bogdanovich², Doctor of Engineering, Prof.; ResearcherID: A-4662-2013, ORCID: https://orcid.org/0000-0002-5374-2943
S.V. Karpova¹, Postgraduate Student, Assistant; ORCID: https://orcid.org/0000-0001-6966-4866
O.A. Misyurov¹, Postgraduate Student; ORCID: https://orcid.org/0000-0002-3338-9097

Affiliation

¹Belarusian State Technological University, ul. Sverdlova, 13a, Minsk, 220006, Republic of Belarus; e-mail: aspirantura.bgtu@tut.by, omisurov@mail.ru
²Northern (Arctic) Federal University named after M.V. Lomonosov, Naberezhnaya Severnoy Dviny, 17, Arkhangelsk, 163002, Russian Federation; e-mail: n.bogdanovich@narfu.ru

Keywords

coating paste, urea-formaldehyde oligomer, latex, coating, paper, cardboard, quality

For citation

Chornaya N.V., Bogdanovich N.I., Karpova S.V., Misyurov O.A. Application of Urea-Formaldehyde Oligomer for Quality Improvment of Paper and Cardboard Products. Lesnoy Zhurnal [Russian Forestry Journal], 2020, no. 6, pp. 182–193. DOI: 10.37482/0536-1036-2020-6-182-193

References

1. Blinkova T.F., Bondarev A.I. New Butadiene-Styrene Latexes for Coatings of Coated Paper. Tsellyuloza. Bumaga. Karton, 1987, no. 2, pp. 5–9.
2. Bondarev A.I. Production of Coated Paper and Cardboard. Moscow, Lesnaya promyshlennost’ Publ., 1985. 192 p.
3. Eliseyeva V.I. Polymer Dispersions. Moscow, Khimiya Publ., 1980. 295 p.
4. Zholnerovich N.V., Nikolaichik I.V., Chernaya N.V. Improving the Application of Urea Formaldehyde Oligomers in the Production of Technical Paper from Recycled Cellulose Materials. The Issues in Mechanics of Pulp-and-Paper Materials: Proceedings of the 3rd International Conference in Memory of Professor Valery Komarov, Arkhangelsk, Russia, September 9–11, 2015. Arkhangelsk, NArFU Publ., 2015, pp. 224–229.
5. Zholnerovich N.V., Chernaya N.V., Kot Yu.V. Influence of the Composition of the Coating Paste on the Properties of Coated Paper. Trudy BGTU. Seriya IV. Khimiya, tekhnologiya organicheskikh veshchestv i biotekhnologiya [Proceedings of BSTU. Series 4. Chemistry, Organic Substances Technology and Biotechnology], 2010, vol. 1, no. 4, iss. 18, pp. 193–196.
6. Karpova S.V., Chernaya N.V. Studying the Properties of Coated Paper when Replacing a Natural Binder with a New Synthetic. Chemistry and Chemical Technology of Plant Raw Material Processing: Proceedings of the International Science and Technology Conference (Minsk, October 10–12, 2018). Minsk, BSTU Publ., 2018, pp. 187–191.
7. Kipphan G. Encyclopedia of Printed Media. Technology and Methods of Production. Moscow, MGUP Publ., 2003. 1253 p.
8. Kozhevnikov S.Yu., Koverninskiy I.N. Chemistry and Technology “SKIF” for Paper. Moscow, MGUL Publ., 2010. 91 p.
9. Kozhevnikov S.Iu., Koverninskii I.N. Interfiber Electrostatic Bonds in Paper. Khimija Rastitel’nogo Syr’ja [Chemistry of plant raw material], 2012, no. 3, pp. 197–202.
10. Ostrerov M.A., Kuryatnikov A.B., Kudryashova G.I. et. al. Factors Defining the Quality of Paper Passing through the Printing Machine. Tsellyuloza. Bumaga. Karton, 1993, no. 1, pp. 26–27.
11. Popenya T.V., Drapeza A.A., Chernaya N.V., Zholnerovich N.V. Influence of the Composition of the Coating Paste on the Properties of Coated Paper. Trudy BGTU. Seriya IV: Khimiya, tekhnologiya organicheskikh veshchestv i biotekhnologiya [Proceedings of BSTU. Series 4. Chemistry, Organic Substances Technology and Biotechnology], 2011, no. 4(142), pp. 152–154.
12. Terekhina I.L. The Use of Copolymers Based on Vinyl Acetate as Binder Coatings of Coated Paper: Cand. Eng. Sci. Diss. Abs. Moscow, 1983. 18 p.
13. Technology of Pulp and Paper Production: Reference Data. In 3 vol. Vol. 2. Production of Paper and Cardboard. Part 2. The Main Types and Properties of Paper, Cardboard, Fiber and Wood Boards. M.A. Osterov et al. Saint Petersburg, Politekhnika Publ., 2006. 499 p.
14. Khovanskiy V.V., Dubovyy V.K., Keyzer P.M. The Use of Chemical Excipients in the Production of Paper and Cardboard. Saint Petersburg, 2013. 151 p.
15. Chernaya N.V. Theory and Technology of Glued Types of Paper and Cardboard: Monograph. Minsk, BSTU Publ., 2009. 394 p.
16. Chernaya N.V., Fleysher L.V., Chernysheva T.V., Karpova S.V., Misyurov O.A. Influence of the Coating Paste Formulation on the Properties of Polygraphic Cardboard. Technology of Organic Substances: Proceedings of the 83rd Scientific and Technical Conference (Minsk, February 4–15, 2019). Minsk, BSTU Publ., 2019, pp. 39–41.
17. Chernaya N.V., Fleyscher L.V., Chernysheva T.V., Misyurov O.A., Karpova S.V. Influence of Mass Capacity and Composition of Elementary Layers of Polygraphic Cardboard on Its Consumer Properties. Technology of Organic Substances: Proceedings of the 83rd Scientific and Technical Conference (Minsk, February 4–15, 2019). Minsk, BSTU Publ., 2019, pp. 36–38.
18. Shabiyev R.O., Smolin A.S. Analysis of Electrokinetic Parameters of Paper Pulp. Saint Petersburg, 2012. 80 p.
19. Bicu I., Mustaţă F. Water Soluble Polymers from Diels-Alder Adducts of Abietic Acid as Paper Additives. Macromolecular Materials and Engineering, 2000, no. 280-281, iss. 1, pр. 47–53.
20. Eklund G. Die Vorgange unter dem Schaber beim Glattachaber-Streichen. Wochenblatt für Papierfabrikation, 1978, Nr. 18, S. 709–714.
21. Kotitschke G. “Triple Star” – The State of the Art and Most Efficient Production Line in the World for Woodfree Cjfted Papers. Voith, 2002. 186 p.
22. Loretzen A., Wetter N. Paper Testing and Process Optimization. L & Handbook, 2000. 218 p.
23. Zholnerovich N.V., Nikolaychik I.V., Chernaya N.V. Influence of UreaFormaldehyde Oligomer Composition on Technical Paper Properties. Proceedings of BSTU, 2014, no. 4(en), pp. 125–127.

Received on January 20, 2020