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PENGAWETAN LIMA JENIS KAYU DENGAN KOPPERS FORMULA 7 MENURUT METODE PENCELUPAN
Barly Barly;
Pipin Permadi
Jurnal Penelitian Hasil Hutan Vol 4, No 2 (1987): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan
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DOI: 10.20886/jphh.1987.4.2.42-45
Five timber species were treated with Koppers Formula 7 using momentary immersion method. The samples (5 cm x 5 cm x 100 cm) were then introduced into a diffusion chamber for one, three, or jive weeks. The depth of penetration was measured after cutting the samples and result analyzed. The conclusions are :The duration of diffusion has a highly significant effect on preservative penetration, while the timber species did not have a significant bearing in the penetration. The rate of diffusion is proporsional to the treatment time.Taking the forgoing result into account, the moisture content has no effect on the depth of penetration.The momentary immersion method appeared to have met to the standar requirement for all timber species tested in this experiment.The result indicated that duration in one week gives statisfactory penetration for the mahoni, manii and jeungjing species. The durian and petai however, could only give statisfactory results when the duration is longer than three weeks
APLIKASI KOPOLIMER TANIN RESORSINOL FORMALDEHIDA UNTUK MENINGKATKAN SIFAT FISIS-MEKANIS BAGIAN LUNAK KAYU KELAPA
Adi Santoso;
Barly Barly
Jurnal Penelitian Hasil Hutan Vol 23, No 2 (2005): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan
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DOI: 10.20886/jphh.2005.23.2.79-86
Impregnasi kopolimer merupakanegn salah satu upaya dalam peningkatan kualitas kayu. Dalam penelitian ini digunakan kopolimer tanin resorsinol formaldehida (TRF) terhadap bagian lunak kayu kelapa. Polimer diimpregnasikan dengan menggunakan vakum pada tekanan awal 11 atm. Sifat fisis dan mekanis contoh diuji sebelum dan sesudah perlakuan.Hasil penelitian menunjukkan bahwa perlakuan mampu meningkatkan karakteristik fisis dan mekanis bagian lunak kayu kelapa tersebut.
PENGAWETAN DUA JENIS KAYU MERANTI DENGAN METODE RENDAMAN
Barly Barly;
Pipin Permadi
Jurnal Penelitian Hasil Hutan Vol 4, No 4 (1987): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan
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DOI: 10.20886/jphh.1987.4.4.4-7
This paper deals with an experiment of soaking treatment of two meranti wood species each with Wolmanit CB and Koppers Formula 7. In this process three groups of wood samples measure 50 cm x 5 cm x 5 cm were submerged in a bath of preservative for three, five and seven days. The treatability of the samples were studied. From this study the following conclusions could be drawn:Penetration of both preservatives could be increased into red meranti when high concentration were employed.Retention of Koppers Formula 7 increases on both meranti when high concentration was employed.In general the such treatment can not be recomended due to the result obtained is lower than the treatment spesification requirements for housing wood preservation.
PENGAWETAN LIMA JENIS KAYU MENURUT METODE RENDAMAN PANAS-DINGIN
Barly Barly;
Pipin Permadi
Jurnal Penelitian Hasil Hutan Vol 5, No 5 (1988): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan
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DOI: 10.20886/jphh.1988.5.5.265-268
The degree of protection offerd by a wood preservative depends upon the quality of preservative retained by the timber, the depth penetration, and the permanence of preservative in the wood.On the hot and cold bath process, the timber is immersed in cold preservative and the bath and timber are heated up together to around 70°C for one, two, three hours until the timber is hot throught, and the whole then allowed to cool down for 24 hours.For all timber species tested in this experiment the depth of penetration and retention of preservative was measured after treatment. The result of which can be seen in Table 1. After calculated and analysis (Table 2 and Table 3) the following conclusions could be draw :Timber species has highly significant on boron penetration and retention. Boron penetration a seemed to be generally getting deeper with increased hot soaking hours; but one hour is fully.Generally speaking, hot and cold bath process are to be preferred although with mahoni (Swietenia mahogani Jack:) and tanjung (Mimmusops elengi L.) timbers the preservative retention less than the other timbers.
PENGARUH PENGUKUSAN TERHADAP IMPREGNASI DENGAN BARAN PENGAWET CCA PADA KAYU RASAMALA (ALTINGIA EXCELSA NORONHA)
Barly Barly
Jurnal Penelitian Hasil Hutan Vol 8, No 5 (1991): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan
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DOI: 10.20886/jphh.1991.8.5.192-195
RQ8flmala ia one of a difficult timber species to be dried. The effect of steam conditioning before treatment on the impregnation 'Of green Bawn wood was investigated. This experiment shows that the different 1chedulesproduced different retentiori. Steaming before impregnation gave positioe effect on the treatability of green wood.
PENGAWETAN BATANG AREN DENGAN BAHAN PENGAWET TIPE CCA, CCB, DAN BFCA
Barly Barly
Jurnal Penelitian Hasil Hutan Vol 6, No 4 (1989): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan
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DOI: 10.20886/jphh.1989.6.4.246-249
Aren timbers are suspectible to wood detercrating agents especially when used in contact with ground and/or exposed to the weather. Therefore, proper treatment is neccessary to protect them from insects and decaying organisms. The success of aren timber treatment depends on wood structure, treatment processes, and other factors.Treatment schedules of different processes were established through a series of experiment. For example, longer pressure period and higher preservative concentration are more suitable for products used in contact with ground than those used outdoor or without contact with the ground. In Anonymous (1987), the target CCA retention ranges from 3.3 to 10.6 kg/m3, and CCB from 6.4 to 11.4 kg/m3, and BFCA from 6.0 to 8.6 kg/m3, depend on preservatives and end products.The experimental results indicate that the retention of preservatives exceeds the minimum values of specification. Recomended treatment schedules for each process are presented.
KETERAWETAN 95 JENIS KAYU TERHADAP IMPREGNASI DENGAN BAHAN PENGAWET CCA
Barly Barly;
Abdurahim Martawijaya
Jurnal Penelitian Hasil Hutan Vol 18, No 2 (2000): Buletin Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan
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DOI: 10.20886/jphh.2000.18.2.69-78
Percobaan keterawetan 95 jenis kayu telah dilakukan dengan proses sel penuh menggunakan bahan pengawet CCA (copper-chrome-arsenate). Contoh kayu kering udara ukuran 5 cm x 5 cm x 100 cm disiapkan dan kemudian diawetkan dengan menggunakan bahan pengawetan sebagai berikut: vakum awal selama 15 menit pada 500 mm Hg: tekanan hidraulik dipertahankan pada maksimum 10 atmosfir selama satu jam, kemudian vakum akhir selama 15 menit pada 500 mm Hg.Contoh kayu yang sudah diawetkan dengan CCA diuji retensi dan penetrasinya. Hasil penelitian menunjukkan adanya hubungan positif dan nyata antara retensi dan penetrasi. Kelas keterawetan kayu ditetapkan berdasarkan nilai penetrasi dan dibagi dalam empat kelas. Berdasarkan hasil penetapan nilai penetrasi dari 95 jenis kayu diperoleh sebaran penetrasi berturut-turut 65,25% termasuk kelas I dan Il (mudah dan sedang) dan 34,73% termasuk kelas Ill dan IV (sukar dan sangat sukar).
PENGAWETAN BAGIAN LUNAK BATANG KELAPA BASAH DENGAN CARA TEKANAN
Barly Barly;
Didik A Sudika
Jurnal Penelitian Hasil Hutan Vol 23, No 2 (2005): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan
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DOI: 10.20886/jphh.2005.23.2.111-117
Tulisan ini mengemukakan hasil penelitian metode tekanan pada dua varietas kelapa dengan bahan pengawet senyawa boron. Bagian lunak batang kelapa basah pada dolok kesatu, kedua dan ketiga berukuran 5 cm x 10 cm x 100 cm diawetkan dengan cara proses sel penuh (FCP) dan metode tekan berganti (APM). Hasil penelitian menunjukkan bahwa semua varietas dan letak dolok dalam batang kelapa dapat diawetkan dengan cara tekanan. Dari penelitian ini dapat diketahui bahwa retensi bahan pengawet yang dihasilkan dengan cara tekan berganti (APM) (11,06 kg/m3 dan 9,44 kg/m3) berbeda dengan yang dihasilkan dengan cara sel penuh (FCP) (4,45 kg/m3 dan 4,74 kg/m3) pada kelapa dalam dan kelapa hibrida.
KEMUNGKINAN PEMANFAATAN JENIS KAYU INDONESIA UNTUK PENGGANTI KAYU POK
Y I Mandang;
Barly Barly
Jurnal Penelitian Hasil Hutan Vol 14, No 10 (1996): Buletin Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan
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DOI: 10.20886/jphh.1996.14.10.405-416
Suatu percobaan impregnasi tiga jenis kayu daun lebar Indonesia dengan bahan pelumas sudah dilaksanakan. Tujuannya adalah untuk menghasilkan kayu yang memiliki sifat mendekati kayu pok (Guajacum spp.): berat jenis tinggi dan kandungan resin/pelumas tinggi, cocok untuk penyangga poros baling-baling kapal laut.Tiga jenis kayu yang diuji yaitu Elateriospermum tapos Bl., Dialium platysepalum Backer, dan Xanthophyllum stipitatum Benn. Pemilihan jenis didasarkan pada hipotesis bahwa jenis kayu ini mudah diimpregnasi karena mempunyai parenkim pita berjarak rapat.lmpregnasi dilakukan dengan 4 jenis minyak yaitu: minyak jarak, minyak kemiri, minyak laka dan asam oleat. Konsentrasi minyak yang digunakan adalah 3% dalam alkohol lalu diimpregnasikan ke dalam kayu dengan bagan berikut: vakum awal 500 mmHg selama 15 menit, tekanan hidraulik 10 atm selama 60 menit, dan vakum akhir 500 mmHg seiama 15 menit. Absorpsi larutan dapat mencapai 62,7% berat kayu pada Elateriospermum, 20,7% pada Dialium dan 18, 7% pada kayu Xanthophyllum. Hal ini menunjukkan bahwa ketiga kayu yang dicoba termasuk sedang-sukar diimpregnasi. Karena iiu disarankan untuk dilakukan percobaan lebih lanjut dengan menggunakan kadar pelumas yang lebih tinggi dan jangka waktu tekan yang lebih lama. Mungkin diperlukan pemanasan pada waktu proses untuk menurunkan kekentalan pelumas yang digunakan.
STUDI PENDAHULUAN PENGAWETAN ROTAN BAHAN BAKU MEBEL
Barly Barly
Jurnal Penelitian Hasil Hutan Vol 9, No 5 (1991): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan
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DOI: 10.20886/jphh.1991.9.5.189-192
Rattan for the furniture raw materials is easily attacked by stain fungi and moulds during air drying, leaving discolored surfaces. The soft portion is also susceptible to attack of powder post beetles. To prevent this problem, the newly cut rattan should be treated with preservative to ensure a reasonable service life. The treatment method affects the extent of penetration and absorption of preservation into the rattan. The rasult of study on the preservation of rattan by pressure process is presented in this paper. A pressure period for 5, 15, and 25 minutas was sufficient to obtain required retention of preservative for the rattan tabu-tabu, batang and tohiti.