桉树科技
桉樹科技
안수과기
EUCALYPT SCIENCE & TECHNOLOGY
2011年
2期
10-15
,共6页
桉树%阻燃胶合板%胶合强度%氧指数
桉樹%阻燃膠閤闆%膠閤彊度%氧指數
안수%조연효합판%효합강도%양지수
eucalyptus%fn'e - retardant - treated (FRT) plywood%bond strength%oxygen index
以磷酸二氢铵(MAP)溶液为阻燃剂,通过浸泡尾叶桉单板,研究了单板的载药量;以Ⅱ类胶合强度为指标,利用正交试验对常规胶合板生产工艺进行了优选。在此基础上,选取浸泡时间和最优生产工艺试制了阻燃桉树胶合板,并对其Ⅱ类胶合强度和燃烧性能进行了检测。结果表明:不同厚度尾叶桉单板的载药量随浸泡时间的延长呈现相似的增长规律;试验所得常规尾叶桉胶合板最优生产工艺为施胶量210 g.m-2、热压温度130℃、热压时间8 min,该条件下胶合板的Ⅱ类胶合强度达到了2.01 MPa;单板浸泡8h后,单板平均载药量为32.05 kg.m-3,所制得阻燃胶合板氧指数提高了13.9%,炭化长度减少了8.3 mm(26.2%),阻燃性能明显提高,而胶合强度也达到了Ⅱ类胶合板的国家标准。研究初步证明利用常规桉树胶合板生产工艺生产阻燃桉树胶合板是可行的。
以燐痠二氫銨(MAP)溶液為阻燃劑,通過浸泡尾葉桉單闆,研究瞭單闆的載藥量;以Ⅱ類膠閤彊度為指標,利用正交試驗對常規膠閤闆生產工藝進行瞭優選。在此基礎上,選取浸泡時間和最優生產工藝試製瞭阻燃桉樹膠閤闆,併對其Ⅱ類膠閤彊度和燃燒性能進行瞭檢測。結果錶明:不同厚度尾葉桉單闆的載藥量隨浸泡時間的延長呈現相似的增長規律;試驗所得常規尾葉桉膠閤闆最優生產工藝為施膠量210 g.m-2、熱壓溫度130℃、熱壓時間8 min,該條件下膠閤闆的Ⅱ類膠閤彊度達到瞭2.01 MPa;單闆浸泡8h後,單闆平均載藥量為32.05 kg.m-3,所製得阻燃膠閤闆氧指數提高瞭13.9%,炭化長度減少瞭8.3 mm(26.2%),阻燃性能明顯提高,而膠閤彊度也達到瞭Ⅱ類膠閤闆的國傢標準。研究初步證明利用常規桉樹膠閤闆生產工藝生產阻燃桉樹膠閤闆是可行的。
이린산이경안(MAP)용액위조연제,통과침포미협안단판,연구료단판적재약량;이Ⅱ류효합강도위지표,이용정교시험대상규효합판생산공예진행료우선。재차기출상,선취침포시간화최우생산공예시제료조연안수효합판,병대기Ⅱ류효합강도화연소성능진행료검측。결과표명:불동후도미협안단판적재약량수침포시간적연장정현상사적증장규률;시험소득상규미협안효합판최우생산공예위시효량210 g.m-2、열압온도130℃、열압시간8 min,해조건하효합판적Ⅱ류효합강도체도료2.01 MPa;단판침포8h후,단판평균재약량위32.05 kg.m-3,소제득조연효합판양지수제고료13.9%,탄화장도감소료8.3 mm(26.2%),조연성능명현제고,이효합강도야체도료Ⅱ류효합판적국가표준。연구초보증명이용상규안수효합판생산공예생산조연안수효합판시가행적。
To manufacture fire- retardant - treated(FRT) plywood for routine of plywood production process, MAP solution absorption patterns for Eucalyptus urophylla veneers were studied, and the routine was opti- mized by orthogonal test, in which Ⅱ class bond strength was taken as an evaluation index. Then, the im- pregnation veneers were pressed to FRT plywoods according to the optimal process, and 11 class bond strength and combustion performance of FRT plywoods were examined. The results showed that veneers with different thicknesses presented similar absorption patterns, the optimal manufacturing parameters of FRT plywood were 210 g ~ m -2 resin added, 130 ~C hot pressing temperatme and 8min hot pressing time, while its II class bond strength was 2.01 MPa and the average veneer retention was 32.05 kg " m -s. After impregnating for 8 hours, the FRT plywood had presented 13.9 percent increase in OI and 8.3 mm (26.2%) decrease in charred length which were an obvious improvement of flame retardant property and met the bond strength requirement of Ⅱ class plywood. It was feasible that FRT plywood could be manufactured by routine of plywood production process.