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Sestava, lastnosti, uporaba in reciklaža Kerrocka
ID Vovk, Matej (Author), ID Beličič, Andrej (Author), ID Šernek, Milan (Author)

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Abstract
Kerrock je trd kompozitni material, sestavljen iz 40 ut. % polimetil metakrilata (PMMA) in 60 ut. % aluminijevega hidroksida (ATH), vezni člen med njima pa je silan. V tuji strokovni literaturi podobne materiale poimenujejo kot PMMA/ATH kompozit, Kerrock pa je eno od komercialnih imen za ta material. Lastnosti PMMA so odvisne od stopnje in načina polimerizacije, na splošno pa velja, da je trd, vodoodporen in UV odporen ter se ga lahko obdeluje. ATH je bel, netoksičen material, relativno mehak in neabraziven ter eden izmed najbolj razširjenih samougasljivih dodatkov v polimernih kompozitih. Zaradi takšne sestave je Kerrock možno obdelovati kot les in ga termoformirati kot plastomerne materiale. Uporablja se za opremo notranjih prostorov in v gradbeništvu kot fasadni element. Na mehanske lastnosti vplivajo morfologija stičnih površin polnila, adhezija na stični površini med polnilom in polimerno matrico, porazdelitev delcev ATH in vsebnost silana oziroma drugih dodatkov. Kerrock je možno kemično reciklirati, vendar takšni postopki zahtevajo velik energijski vložek. Druga možnost recikliranja je povezovanje prašnih delcev Kerrocka z vročim stiskanjem in tudi možnim predhodnim dodajanjem MMA ali poliestrske smole. V zadnjih letih so se raziskave in razvoj reciklaže odpadnih produktov Kerrocka preusmerile v povezovanje le-teh z lesom, kar je privedlo do novih rešitev. Recikliranju tega kompozita bo v prihodnje potrebno posvetiti več pozornosti

Language:Slovenian
Keywords:Kerrock, kompozit, ATH, PMMA, PMMA/ATH, silan, reciklaža
Typology:1.01 - Original Scientific Article
Organization:BF - Biotechnical Faculty
Year:2017
Publication status in journal:Published
Article version:Publisher's version of article
Number of pages:Str. 57-69
Numbering:Letn. 66, št. 2
PID:20.500.12556/RUL-132549 This link opens in a new window
UDC:678.86
ISSN on article:0024-1067
COBISS.SI-ID:2846089 This link opens in a new window
Publication date in RUL:28.10.2021
Views:216
Downloads:66
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Record is a part of a journal

Title:Les
Shortened title:Les
Publisher:Zveza društev inženirjev in tehnikov gozdarstva in lesarstva Slovenije, Zveza društev inženirjev in tehnikov gozdarstva in lesarstva Slovenije, Biotehniška fakulteta, Oddelek za lesarstvo, Založba Univerze, Biotehniška fakulteta, Oddelek za lesarstvo
ISSN:0024-1067
COBISS.SI-ID:13940224 This link opens in a new window

Secondary language

Language:English
Title:Composition, properties and application of Kerrock
Abstract:
Kerrock is a solid surface composite material, which is composed of 40 wt.% of polymethylmethacrylate (PMMA) and 60 wt.% of aluminium trihydroxide (ATH) filler with silane as a coupling agent. Similar material is also called PMMA/ATH composite in the academic literature, while Kerrock is one of its commercial names. PMMA is a hard material that is water- and UV-resistant and easy to work with, although its characteristics depend on the degree and process of polymerization that occurs. ATH is a white, nontoxic material that is relatively soft and non-abrasive. It is widely used as an effective fire-retardant filler in polymer composites. Because of its composition, the machining of Kerrock is similar to the machining of wood. Moreover, it can also be thermoformed, like thermoplastics. Kerrock is widely used for work surfaces and cladding, with both indoor and outdoor applications. The material%s interfacial morphology, interfacial adhesion between the filler and polymer matrix, dispersion of ATH particles and concentration of adhesion promoting agent have the biggest impacts on the mechanical characteristics of Kerrock. While it is possible to chemically recycle Kerrock, the energy required for this is too high for this process to be practical. Another option for recycling this composite is to combine its particles in a hot press or to add MMA or polyester resin before pressing. However, there remains much work to be done with regard to effectively recycling Kerrock

Keywords:Kerrock, composite, silane, recycling

Projects

Funding programme:KROP Kolpa d.d. (MGRT)
Project number:000477

Funder:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Project number:P4-0015
Name:Les in lignocelulozni kompoziti

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