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木材與竹材的化學(xué)改性技術(shù)研究考核試卷考生姓名:________________答題日期:________________得分:_________________判卷人:_________________
一、單項(xiàng)選擇題(本題共20小題,每小題1分,共20分,在每小題給出的四個(gè)選項(xiàng)中,只有一項(xiàng)是符合題目要求的)
1.木材和竹材進(jìn)行化學(xué)改性的主要目的是()
A.提高木材的燃燒性能
B.增強(qiáng)竹材的耐腐蝕性
C.降低材料的力學(xué)性能
D.改善材料的表面光澤
2.以下哪種方法不屬于木材的化學(xué)改性技術(shù)?()
A.硅化
B.酚化
C.堿化
D.真空干燥
3.竹材的化學(xué)改性方法中,通常使用的交聯(lián)劑是()
A.硅烷偶聯(lián)劑
B.醋酸酐
C.硫酸
D.磷酸
4.木材化學(xué)改性的過程中,下列哪項(xiàng)因素對改性效果影響最大?()
A.溫度
B.壓力
C.時(shí)間
D.材料的初始含水率
5.在酚醛樹脂改性木材中,酚與甲醛的摩爾比通常為()
A.1:1
B.1:2
C.2:1
D.3:1
6.以下哪種方法不適合用于提高竹材的耐腐性能?()
A.硅烷化處理
B.醋酸化處理
C.堿處理
D.紫外線照射
7.化學(xué)改性后的木材在應(yīng)用中,下列哪項(xiàng)優(yōu)勢最為顯著?()
A.提高材料的韌性
B.增強(qiáng)材料的耐磨性
C.提高材料的防火性能
D.減少材料的吸水膨脹性
8.竹材的化學(xué)改性過程中,以下哪種現(xiàn)象最不可能出現(xiàn)?()
A.重量增加
B.體積膨脹
C.強(qiáng)度下降
D.抗彎性能提高
9.下列哪種化學(xué)改性方法可以顯著提高木材的耐候性?()
A.硅化
B.酚化
C.乙?;?/p>
D.堿處理
10.在進(jìn)行化學(xué)改性時(shí),竹材與改性劑的最佳混合方式是()
A.干燥混合
B.濕潤混合
C.蒸汽混合
D.高溫混合
11.木材的乙?;男阅軌颍ǎ?/p>
A.增加木材的吸水性
B.提高木材的尺寸穩(wěn)定性
C.降低木材的力學(xué)強(qiáng)度
D.減少木材的燃燒熱值
12.在木材和竹材的化學(xué)改性過程中,下列哪種化學(xué)試劑主要用于增加材料的交聯(lián)度?()
A.醋酸酐
B.丙酮
C.甲醇
D.水
13.竹材化學(xué)改性后,以下哪種性能最有可能下降?()
A.抗彎強(qiáng)度
B.抗沖擊性能
C.耐磨損性
D.尺寸穩(wěn)定性
14.以下哪種方法不是評估木材化學(xué)改性效果的方法?()
A.紅外光譜分析
B.掃描電鏡分析
C.質(zhì)量損失測定
D.音頻分析
15.在化學(xué)改性過程中,通常不會(huì)用到的物理現(xiàn)象是()
A.熱膨脹
B.吸附作用
C.酸堿中和
D.光照作用
16.下列哪種木材改性技術(shù)可以減少木材的吸濕性?(")
A.堿處理
B.醋酸化
C.硅化
D.熱處理
17.對于竹材的化學(xué)改性,以下哪種環(huán)境因素會(huì)影響改性效果?()
A.濕度
B.光照
C.溫度
D.以上都是
18.下列哪項(xiàng)不是木材酚化改性的優(yōu)點(diǎn)?()
A.提高木材的耐化學(xué)性
B.提高木材的防蟲性能
C.降低木材的吸水率
D.增加木材的脆性
19.在化學(xué)改性木材時(shí),通常不會(huì)使用的化學(xué)試劑是()
A.硅烷偶聯(lián)劑
B.酚醛樹脂
C.甲醛
D.氫氧化鈉
20.關(guān)于竹材的化學(xué)改性,下列哪種說法是錯(cuò)誤的?()
A.可以提高竹材的耐久性
B.可以改善竹材的物理性能
C.不會(huì)影響竹材的環(huán)保性能
D.可以提高竹材的化學(xué)穩(wěn)定性
(注:以下為空白答題區(qū)域,供考生填寫答案)
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