RU-2792879-C1 - POLYMER COMPOSITE MATERIAL FOR STRUCTURAL PURPOSES BASED ON ULTRA-HIGH MOLECULAR WEIGHT POLYETHYLENE REINFORCED WITH BASALT FABRIC

RU2792879C1RU 2792879 C1RU2792879 C1RU 2792879C1RU-2792879-C1

Abstract

FIELD: polymer materials. SUBSTANCE: invention be used for the manufacture of parts in friction units, machines and other mechanisms that operate under conditions of abrasive wear in aggressive environments. A polymer composite material based on ultra-high molecular weight polyethylene (UHMWPE) 99.5 wt.% with the addition of 0.5 wt.% N-Cyclohexylbenzothiazole-2-sulfenamide is proposed, including basalt fabric as a reinforcing element, which is laid in a polymer matrix in two layers, between which an additional UHMWPE layer is formed. EFFECT: increase in the strength, wear resistance and reliability of friction units, as well as a decrease in the intensity of mass wear of a structural material based on UHMWPE and basalt fabric. 2 cl, 1 dwg, 3 tbl, 4 ex

Inventors

Dyakonov Afanasij Alekseevich
LAZAREVA NADEZHDA NIKOLAEVNA
Vasilev Andrej Petrovich
Danilova Sakhayana Nikolaevna
Sleptsova Sardana Afanasevna
OKHLOPKOVA AJTALINA ALEKSEEVNA
PETROVA NATALIYA NIKOLAEVNA
KYCHKIN ANATOLIJ KONSTANTINOVICH
Kychkin Ajsen Anatolevich
Tuisov Aleksej Gennadevich

Dates

Publication Date: 20230328
Application Date: 20220719

Claims (3)

1. A polymer composite material for the manufacture of parts in friction units, machines and other mechanisms operating under abrasive wear conditions in aggressive environments, based on ultra-high molecular weight polyethylene (UHMWPE), including a reinforcing element, characterized in that it contains basalt fabric as a reinforcing element, laid in a polymer matrix between layers of UHMWPE, while UHMWPE additionally contains sulfenamide C as a modifier in the following ratio, wt.%:
UHMWPE 99.5 sulfenamide C 0.5
2. A polymer composite material according to claim 1, characterized in that the reinforcing basalt fabric is laid in a polymer matrix in two layers, between which an additional layer of UHMWPE is formed.

Description

The invention relates to the field of polymer materials science and can be used as a high-modulus, wear-resistant composite material based on ultra-high molecular weight polyethylene (UHMWPE) for the manufacture of structural products used in contact with an abrasive surface in aggressive environments: oil, oils, lubricants, fuel as a lining material used, in particular, for lining mining and processing equipment. When developing polymeric materials for structural and functional purposes, a number of requirements are imposed on operational properties: resistance to aggressive media, high elastic and strength properties, resistance to deformation, wear resistance, good thermal properties and other characteristics. In this regard, the tasks are set for the selection of components that have a complex effect on the polymer matrix and lead to an improvement in properties. Known structural polymer composite based on UHMWPE with a molecular weight of 4×10 6 g/mol, a copolymer of high density ethylene with grafted vinyl trimethoxysilane (HDPE-g-VTMS) or a copolymer of high density ethylene with grafted maleic anhydride (HDPE-g-SMA) in in the form of ground granulate with a particle size of 160-250 microns, reinforced with carbon fibers, having a diameter of 7.5-15.0 microns and a length of 75-200 microns (see RU No. 2674019, class C08J 5/16, C08L 23/06, C08L 51/06, C08K 3/04, C08K 7/06, published 12/04/2018). The material is intended for the production of antifriction products in friction units in mechanical engineering and medicine using additive technologies. The disadvantages of the known material are unsatisfactory strength, low modulus of elasticity, high cost. A hybrid composite based on fibrous fillers of UHMWPE, basalt fabric, glass fiber fabric and hollow glass microspheres is known (see E.A. Belyaeva, A.F. Kosolapov, S.V. Shatsky, V.S. Osipchik, A. A. Nabiulina / Hybrid composites based on fibrous fillers from ultra-high molecular weight polyethylene and glass fillers // Advances in chemistry and chemical technology. - 2015. - V.24. - No. 10.). According to the known invention, the laying of the layers is carried out in turn: a layer of UHMWPE fabric, a layer of basalt or glass fabric. The material is intended for obtaining antifriction products in friction units in mechanical engineering. The disadvantages of the known material are the high cost and complexity of manufacturing technology. The closest in technical essence to the claimed material is a composition based on UHMWPE with a molecular weight of 2.7×10 6 g/mol and an inorganic filler, which is used as basalt fibers in an amount of 5.0-20.0 wt. % (see WO 2015/002568, class C08K 7/04, C08L 23/06, published 01/08/2015). Moreover, the length of the crushed fibers corresponded to 30-90 microns, and the diameter was 8-10 microns. The material is intended for the manufacture of wear-resistant products used for lining mining and processing equipment. The disadvantages of the material are low strength, complex manufacturing process. The task to be solved by the claimed solution is to develop a structural and wear-resistant composite material for the manufacture of parts in friction units, machines and other mechanisms operating under abrasive wear in aggressive environments. The technical effect obtained when solving the problem is expressed in increasing the strength, wear resistance and reliability of units, reducing the intensity of mass wear of the material. To solve the problem, the polymer composite material based on UHMWPE as a reinforcing element contains a basalt fabric laid in a polymer matrix between layers of UHMWPE, while UHMWPE additionally contains sulfenamide C as a modifier in the following ratio of components, wt.%: UHMWPE - 99.5 ; sulfenamide C - 0.5. In addition, the reinforcing basalt fabric is laid in a polymer matrix in two layers, between which an additional layer of UHMWPE is formed. Comparative analysis of the features of the claimed solution with known features indicates the compliance of the claimed solution with the criterion of "novelty". The set of features of the invention provides a solution to the stated technical problem, namely, improving the strength properties and increasing the wear resistance of the polymer composite, expanding the range of polymer composite materials for structural purposes based on UHMWPE. To increase the strength of the polymeric material based on UHMWPE, it is proposed to use basalt fabric included in the composite as a reinforcing element in the polymer matrix. The choice of the reinforcing layer was made on the basis of the results of studies on the reinforcing properties of basalt fabric in epoxy resin (see I.G. Lukachevskaya, M.P. Lebedev, A.K. Kychkin / Study of the effect of fillers on the properties of polymer composite materials using textolites as an example / / Scientific notes of the Komsomolsk-on-Amur State Technical University. - 2019. - V. 1. - No. 4). It was found that the introdu