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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(guò)程中,下列哪項(xiàng)因素對(duì)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(shù)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(shì)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(guò)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(rùn)混合
C.蒸汽混合
D.高溫混合
11.木材的乙酰化改性能夠()
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(guò)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(píng)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(cè)定
D.音頻分析
15.在化學(xué)改性過(guò)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(duì)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(chóng)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(shù)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(shuō)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(xiě)答案)
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