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粉笔炸弹带来的反思——对高中趣味化学实验的异议
虎哥
12年8个月前
发表于
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内容:
氯酸钾
—赤磷配方之所以屡禁不止,并成为中学化学爱好者的第一杀手(在重大事故中数量排名第一),可能与它是高中教辅资料中正式刊印的配方有关。,况且,以
氯酸钾
为氧化剂的烟火药、爆音药已经被国家禁止,赤磷也不允许掺在常规烟火药中,
氯酸钾
—赤磷配方早在百年之前就被否定。,具体做法是:取少量
氯酸钾
放在烧杯中,滴入少量水,使之润湿,然后加入红磷(质量约为
氯酸钾
的1/5),用玻璃棒轻轻将混合物调成均匀的浆糊状。,他从1班同学那里搞到了药品配方,趁着化学老师带他们去实验室做实验的时候从仪器室偷了一瓶红磷、一瓶
氯酸钾
。
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15年6个月前
发表于
跳蚤市场
内容: 磷酸85%400ml 氧化钙500g 硅酸钠500g 氯化铵400g 二氧化硅500g 无水碳酸钠500g 尿素500g 升华硫500g 牛代牛酸钠500g
氯酸钾
有没有人尝试过把小灯泡插入220v尝试那闪耀的一瞬间?
black
15年8个月前
回复于
高电压技术
内容:是用铝镁合金或者是铝片,后来才出现铝镁合金+
氯酸钾
的闪光剂。
另类‘法老之蛇’的制作
匿名用户
4年8个月前
发表于
极客DIY
化学
内容:接下来就是配置滴胶,我发现高氯酸铵可以加速滴胶的凝固,高
氯酸钾
融于滴胶会剧烈放热,难以疑固(所以别选高
氯酸钾
),在这个小实验中氧化剂可以选用硝酸钾,高氯酸铵这些不易与滴胶发生反应的氧化剂使其保持燃烧,如果准备妥当
精彩的300g铝热~ 附带高锰酸钾与甘油自燃 80g氯
冥灵
13年7个月前
发表于
化学
内容:
氯酸钾
与有机物等接触比较危险,为安全起见,
氯酸钾
和糖在实验之前一直是分开放置的,实验的时候才把它们混合到一起。,
氯酸钾
与糖按质量比3:1的比例混合有很暴力的燃烧力视频中还展示了高锰酸钾与甘油混合自燃,以及80克氯糖混合物暴力燃烧的视频。,点击此处查看视频 在昨天的残骸之上再做 由左向右 甘油 研细的3g白砂糖 研细的9g
氯酸钾
高锰酸钾 300g铝热剂 这次在铝热剂中间埋了点铁片和一块玻璃!
今天实验失败
x388
17年3个月前
回复于
喷气推进
内容:
氯酸钾
加热到356摄氏度熔融,400摄氏度左右开始分解。
今早一枚火箭发射成功
那抹余辉
9年5个月前
回复于
喷气推进
内容:我拿
氯酸钾
替换硝酸钾试试,因为实在搞不到kn
准备氯酸盐电解槽
silicon_dioxide
6个月27天前
发表于
化学
内容:铝制导线和黄铜鳄鱼夹电解槽主体为2L玻璃罐,使用氯化钠饱和溶液进行电解,并用钾盐沉淀氯酸根预计于3日晚完成试运行1号2号3号都要在外地,三号又要去进行志愿服务,实在太仓促了,如果没有这些安排我或许可以在试运行后进行
氯酸钾
的大量制备
RNX火箭,求助发动机是否可以车薄?
a676977007
11年2个月前
回复于
喷气推进
内容:高
氯酸钾
银药可以不?
氯酸钠+苯甲酸钠----很猛的推进剂
mrsmith
14年8个月前
回复于
喷气推进
内容:
氯酸钾
加煤油加氧化铁在雷管的作用下,爆速能达到3300 m/s。
[讨论] 小经验
ZHYKYM
16年10个月前
回复于
喷气推进
内容:以下是引用KNO3在2008-4-11 20:55:35的发言:我就是头痛PVC的封口方法,一连几个都被爆出来了,我用的是
氯酸钾
推进剂(我们这儿买不到硝酸钾)谁能帮帮我?
会员123123123今日访问南开大学,kasim顺利完成接待任务
勇敢的毛毛虫
14年5个月前
回复于
跳蚤市场
内容:双氧水一瓶,三氧化二铬一瓶,试管架一个(铝合金),
氯酸钾
少量,高氯酸钠少量。
回 8楼(wesker) 的帖子
银色荆棘
12年8个月前
回复于
化学
内容:你以为学生们搞硫酸能像搞
氯酸钾
一样容易?
电解氯化钾中遇到的怪事
路易十八R
8个月23天前
回复于
化学
内容:我自制的钛基二氧化锰电极,无中间层,不加任何添加剂,5v40a日产100g
氯酸钾
,不可避免但完全可以接受的少量掉渣(渣应该是二氧化锰,颗粒大沉淀快。
去外国的火箭网站淘来了点资料.(比较杂)
usercim
16年0个月前
发表于
喷气推进
内容:(AN/ HTPB推进剂/Mg)硝酸铵/聚氨酯高氯酸铵/硅高氯酸铵/ PBAN聚合物/环氧树脂高氯酸铵/ PBAN聚合物/环氧树脂/铝高氯酸铵/丁羟聚合物/铝高氯酸铵/聚氯乙烯(或AP /聚氯乙烯)高
氯酸钾
,/蔗糖(PP /SU)高
氯酸钾
/环氧树脂高
氯酸钾
/沥青
自创立可白喷口
lord
17年6个月前
发表于
喷气推进
内容:之前在做火箭测试的时候往往喷口的部分会被烧毁我想到立可白在完全干燥的时候可以承受瓦斯喷灯焰而且涂在纸上还可以增加喷口强度所以昨天做了个测试喷口涂立可白的纸卷连续承受
氯酸钾
+碳+硫+铝粉+砂糖充填点火2次纸壳都烧到外部有些碳化了
一个曾经的实验 制取高氯酸钾 极其焰色反应 (实验设备简陋 见谅)
thallium2012
14年7个月前
回复于
化学
内容:就要看你要高
氯酸钾
干嘛用 碳酸钾不管制啊 你这么做污染大 成本高 看你是个新人我就不扣分了 安全第一 知道么 硫氰的毒性也是非常大的 而且这么做你把还原剂和氧化剂混在一起 万一燃烧怎么办呢 我这次真的是忠告
有没人做过氯酸钠和氯化钾复分解制备氯酸钾的?
达闻西
11年2个月前
回复于
化学
内容:江南夜雨 发表于 2013-7-14 15:09 这个,我做过,最初我是通过氯化钠制取
氯酸钾
《工业制法缩小版》最后的步骤就是这个复分解,母液经过蒸发去 ...好厉害,请教你在电解后是怎么判断氯酸钠溶液已经达到电解完成液的标准的
氯酸钾都不能和什么混放?
热爱人生
12年0个月前
回复于
化学
内容:如果
氯酸钾
里再有硫酸的话,反应更剧烈,燃烧甚至爆炸。
小米牌火箭发射点火器
俗世怂人
8年10个月前
回复于
高电压技术
内容:另外这个点火其实发现也要点火头配合,尽量使用
氯酸钾
系的点火药,就是火柴头的那种,我试过用0.2mm的镍铬丝,连接6mm电缆后,按下开关桥丝不会烧断或者...
这些东西多少钱?
warmonkey
15年10个月前
回复于
跳蚤市场
内容:纯度选低点无所谓,可以省很多钱高
氯酸钾
和高氯酸铵很难买,有证都难。
求份点火发动机的简易图.
FROZEN巨擘
9年10个月前
回复于
喷气推进
内容:可以考虑用铝热点, 少量铝热剂混点
氯酸钾
,插一根电子点火头然后包好,就这样做一个铝热点火头,点火产生温度高,温度保持久,对燃料柱的外力扰动小,就是有点引燃得不是很均匀的小问题(应该不要紧),或者用氯糖
关于3d打印树脂燃料的一些探索
WEIZILI
3个月20天前
回复于
喷气推进
内容:用kp做氧化剂,终于实现了氧平衡配比,然后也变得容易点燃了,效果很好,固化测试做了,下一步就是打印测试了,目前配方是高
氯酸钾
,己二醇二丙烯酸酯,byk111分散剂,tpo,氧化铁,氧化锆话说氧化锆可以作为燃料催化剂吗
【原创】一二级火箭分离接头制作
1211
15年9个月前
回复于
喷气推进
内容:氯酸钠溶解度大,结晶细密,浸泡使用是可行的;
氯酸钾
溶解度小,结晶粗大,干燥后不能均匀,效果不好。
(教程)从电池中提取原料
zxyso4
14年3个月前
回复于
化学
内容:无汞”或“低汞”……有点担心……还有,那天我在看一篇论文,一教授写的,《废电池中回收二氧化锰》结果里面有这么一句:……电池内部黑色粉末主要成分为二氧化锰,有少量碳粉,洗净氯化铵后烘干即可留作他用,如催化
氯酸钾
分解制氧气
氯酸钾的歧化反应
三硝基甲苯
15年2个月前
回复于
化学
内容:顺便补充一个产率高的方法:找一个500烧杯,装入
氯酸钾
饱和溶液,中间插一个塑料片(安全起见防短路用),用白金做阳极,钢铁板做阴极(这里的阳极绝对不能用石墨,我试过,10分钟什么都不剩了,又得去偷老娘的白金项链叻
科技爱好中等以上事故报告专用帖
猎鹰
13年7个月前
回复于
社区公务
内容:[s:318] [s:306] 6、应急处理情况:无(我在外面离家很远) 7、事故损失:衣服被烫出很多洞 ,人皮少许8、经验教训总结:
氯酸钾
脾气坏,要小心,做爆炸实验如果没爆炸在5分钟内千万不要靠近
我的火箭模型经历
方志铭
10年4个月前
回复于
喷气推进
内容:我用过含有
氯酸钾
的黑药做火箭发动机,但是感觉效果不好后来就没用可能是因为压药不均匀,火箭飞起来发出忽忽的声音,喷出的气体是忽强忽弱的,后来改用黑药锤制的,因为我用的是活性炭粉所以我就 用64硝17碳9硫的比例
化学药品买多了,如何销毁
最高主机泡泡
9年10个月前
回复于
化学
内容:镁粉
氯酸钾
这种,也经常会用到,扔了多亏再说也不是什么剧毒或者很危险的药品,实在用不完找个安全的地方密封存起来就行了啊销毁了以后想用就该后悔了。。
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