ispltaИзвестия Санкт-Петербургской лесотехнической академииIzvestia Sankt-Peterburgskoj lesotehniceskoj akademii2079-43042658-5871СПбГЛТУ10.21266/2079-4304.2025.252.382-395isplta-487Research ArticleХИМИЧЕСКАЯ ПЕРЕРАБОТКА ДРЕВЕСИНЫ. БИОТЕХНОЛОГИЯCHEMICAL TECHNOLOGY OF WOOD. BIO TECHNOLOGYПрименение бутадиен-нитрильных латексов при изготовлении бумагоподобных материаловThe use of butadiene-nitrile latexes in the manufacture of paper-like materialshttps://orcid.org/0000-0002-0750-0070МальцевГ. И.MaltsewG. I.

МАЛЬЦЕВ Геннадий Иванович – профессор кафедры химической технологии древесины, биотехнологии и наноматериалов, доктор технических наук, профессор 

 620100, ул. Сибирский тракт, д. 37, г. Екатеринбург 

MALTSEV Gennady I. – DSc (Technical), Professor of the Department of Chemical Technology of Wood, Biotechnology and Nanomaterials 

 620100. Siberian tract str. 37. Yekaterinburg 

maltsewg@yandex.ruhttps://orcid.org/0000-0002-1187-7401ЮрьевЮ. Л.YurievYu. L.

ЮРЬЕВ Юрий Леонидович – заведующий кафедрой химической технологии древесины, биотехнологии и наноматериалов, доктор сельскохозяйственных наук, профессор 

 620100, ул. Сибирский тракт, д. 37, г. Екатеринбург 

YURIEV Yuri L. – DSc (Agricultural), Professor, Head of the Department of Chemical Technology of Wood, Biotechnology and Nanomaterials 

 620100. Siberian tract str. 37. Yekaterinburg 

charekat@mail.ruУральский государственный лесотехнический университетРоссияUral State Forestry UniversityRussian Federation2025270320250252382395Copyright © Мальцев Г.И., Юрьев Ю.Л., 20252025Мальцев Г.И., Юрьев Ю.Л.Maltsew G.I., Yuriev Y.L.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://izvestiya-lta.spbftu.ru/jour/article/view/487

Цель исследования ‒ влияние концентрации и природы синтетических бутадиен-нитрильных латексов на физико-механические свойства бумагоподобного материала на основе минеральных волокон. Методология проведения работы заключалась в изготовлении и испытании лабораторных образцов отливок асбестового картона, полученных из композиции состава, мас. ч.: 100 ‒ асбестовое волокно сорта М-4-20; 5‒60 ‒ бутадиен-нитрильные латексы БСНК, БН-30, СКН-40-1ГП, СКН-40ИХ, БН-30К-2, БН-26НГП; 3‒6 ‒ сульфат алюминия в качестве коагулянта для проклейки асбестового волокна сорта М-4-20. Механические и гидрофобные свойства полученного материала характеризуют физико-механические показатели: разрывная длина (L, м); сопротивление раздиранию (Е, мН); сопротивление продавливанию (Ро, кПа); впитываемость при одностороннем смачивании (G, г/м2); капиллярная впитываемость (B, мм); степень проклейки (С, с/мм). Результаты работы: прочностные свойства отливок с бутадиен-нитрильными латексами, за исключением БН-26НГП, близки друг к другу: Lmax = 377–516 м при малых концентрациях (3 мас.ч.) коагулянта. При большей концентрации (6 мас.ч.) сульфата алюминия прочность выше у образцов с СКН-40-1ГП (Lmax = 427 м) и БН-30К-2 (Lmax = 559 м), что объясняется присутствием третьего сомономера – метакриловой кислоты. Для карбоксил-бутадиен-нитрильных латексов карбоксил-содержащий мономер, более равномерно входящий в состав сополимера, чем бутадиен или бутадиенстирол, повышает адгезию полимера к различным субстратам и создает трехмерную сетку, в частности, СКН-40-1ГП. Последнее свойство реализуется образованием солевых связей при введении в латекс оксидов поливалентных металлов, полиаминов, а также участием полимера в трехмерной сетке. Исследованные нитрильные латексы можно использовать для получения асбокартона с высокими прочностными и гидрофобными свойствами, по совокупности которых лучшие показатели установлены для БН-30 и БСНК.

The aim of the study is to influence the concentration and nature of synthetic butadiene‒nitrile latexes on the physical and mechanical properties of a paper-like material based on mineral fibers. The methodology of the work consisted in the manufacture and testing of laboratory samples of asbestos cardboard castings obtained from the composition of the composition, wt. h.: 100 ‒ asbestos fiber grade M-4-20; 5‒60 ‒ butadiene-nitrile latexes BSNK, BN-30, SKN-40-1GP, SKN-40IH, BN-30K-2, BN-26NGP; for sizing M-4-20 grade asbestos fiber; 3‒6 ‒ aluminum sulfate as a coagulant. The mechanical and hydrophobic properties of the resulting material characterize the physico-mechanical parameters: breaking length (L, m); tear resistance (E, mN); penetration resistance (Po, kPa); absorbency with unilateral wetting (G, g/m2); capillary absorbency (B, mm); degree of sizing (C, s/mm). Results of the work: the strength properties of castings with butadiene-nitrile latexes, with the exception of BN-26NGP, are close to each other: Lmax = 377‒516 m, at low concentrations (3 wt.h.) of coagulant. At a higher concentration (6 wt.h.) of aluminum sulfate, the strength is higher in samples with SCN-40-1GP (Lmax = 427 m) and BN- 30K-2 (Lmax = 559 m), which is explained by the presence of a third comonomer, methacrylic acid. For carboxyl-butadiene-nitrile latexes, carboxyl-containing monomer, which is more evenly part of the copolymer than butadiene or styrenebutadiene, increases the adhesion of the polymer to various substrates and creates a three-dimensional grid, in particular SKN-40-1GP. The latter property is realized by the formation of salt bonds when polyvalent metal oxides and polyamines are introduced into latex, as well as the participation of the polymer in a three-dimensional grid. Conclusions: the studied nitrile latexes can be used to produce asbestos cardboard with high strength and hydrophobic properties, according to which the best indicators were established for BN-30 and BSNК.

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The authors declare that there are no conflicts of interest present.