Ispitivanje fungicidnosti različitih sustava zaštite drva za razred opasnosti 3

master's thesis

• Title (english): Testing of Fungicidal Effectiveness of Different Preservative Systems for Hazard Class 3
• Author: Marina Lerinc
• Mentor: Marin Hasan (mentor)
• Committee member: Marin Hasan (predsjednik povjerenstva)
• Committee member: Vjekoslav Živković (član povjerenstva)
• Committee member: Iva Ištok (član povjerenstva)
• Granter: University of Zagreb; Faculty of Forestry and Wood Technology; (Institute for Wood Science); Zagreb
• Defense date and country: 2020-09-25, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Wood Technology

Abstract

Na tržištu se pojavljuju mnogobrojna zaštitna sredstva kojima nisu točno specificirana tehnička svojstva poput fungicidnosti ili mjesta primjene. Upravo je svrha ovog rada usporediti dva različita sustava zaštite drva koje proizvođači deklariraju 'za vanjsku upotrebu'. Sustavima zaštite zaštitili bi se uzorci, potom laboratorijski pohabali simulirajući trošenje u realnoj upotrebi, te izložili djelovanju čistih kultura najčešćih lignikolnih gljiva truležnica. Otpornost na habanje u jednom ciklusu je veća sustavu BQ1 + Pflege-Öl, no trostruko intenzivnijim habanjem se utvrdilo da se ipak uljni sustav zaštite neznatno brže haba od lazurnog sustava (HK-Lasur + HWS112 hibridni premaz). Učinkovitost zaštite i uljnog i lazurnog sustava zaštite se u početnoj fazi pokazao kao izrazito dobar protiv sve tri testirane gljive truležnice. Nakon jednostrukog, a poglavito nakon trostrukog habanja učinkovitost zaštite opada obima testiranim sustavima s time da učinkovitost uljnog sustava zaštite zadržava dovoljnu minimalnu učinkovitost za predviđenu namjenu. Rezultati ispitivanja su pokazali da bi uljni sustav trebalo obnavljati svakih trostruko intenzivnih ciklusa habanja (npr. 3 godine hodanja po drvenim podnim oblogama u eksterijeru), a lazurni sustav bi trebalo obnavljati nakon svakog intenzivnog ciklusa habanja odnosno npr. svake godine.

Abstract (english)

There are numerous preservative agents on the market that do not specify technical properties, such as fungicides or application sites. It is precisely the purpose of this paper to compare two different wood preservative systems that manufacturers declare ‘for outdoor use’. The preservative systems would protect the samples, then wear them out in the laboratory, simulating wear in real use, and expose them to the action of pure cultures of the most common lignocollial rot fungi. The fungicidal effectiveness of the protection would be tested and evaluated according to the valid HRN EN norms. The wear resistance in one cycle is higher with the BQ1 + Pflege-Öl system, but with three times more intensive wear, it was found that the oil system wear slightly faster than the stain system (HK-Lasur + HWS112 hybrid coating). The protection effectiveness of both the oil and stain protection system proved to be extremely good in the initial phase against all three tested rot fungi. After single, and especially after triple wear, the protection efficiency decreases of both tested systems, with the efficiency of the oil protection system maintaining a sufficient minimum efficiency for the intended purpose. The test results showed that the oil system should be renewed every three times intensive wear cycles (eg 3 years of walking on wooden floor coverings in the exterior), and the stain system should be renewed after each intensive wear cycle or eg every year.

• Keywords: Fungicidnost; zaštitni sustavi; lignikolne gljive truležnice; habanje; razred opasnosti 3
• Keywords (english): Fungicides; preservative systems; lignocollial rot fungi; wear; hazard class 3
• Language: croatian
• URN:NBN: urn:nbn:hr:108:342070
• Study programme: Title: Wood Technology Processes; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka drvne tehnologije (magistar/magistra inženjer/inženjerka drvne tehnologije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2020-10-12 13:51:36