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发胶的原理是什么? – 译学馆
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发胶的原理是什么?

How Does Hairspray Work?

Reactions.
《化学反应》
You know that this is a 1920s theme party, right?
你知道这是个20年代的主题派对吧?
Oh yeah, you’re one to talk.
当然 你还好意思说我呢
At least I’m still in my decade, what’s your excuse?
至少我打扮的还不算过时 你有什么理由?
I don’t want to put one of those flappers,
我不想戴那些发饰啊
headbands things on, it’s too much work.
头巾啊类似的东西 太麻烦了
Oh yeah, that makes perfect sense.
是哦 你说的好有道理
Well, this only took like five minutes
我弄明白了发胶是怎么一回事之后
once I figured out how hairspray works.
只用了大概五分钟就打扮好了
Tittle: HOW HAIRSPRAY WORKS
题目:发胶的使用原理
Hairspray is essentially an invisible hairnet made of synthetic polymers
发胶本质上是一种 由聚合物组成的隐形发网
that coat your hair with a thin film
它会在你的头发上覆盖一层薄膜
and glues your hairstyle in place.
从而使你的发型定型
Common hairspray polymers are
发胶中常见的聚合物有
polyvinyl pyrrolidone (PVP)
聚乙烯吡咯烷酮(PVP)
and polyvinyl acetate (PVAC) which
和聚醋酸乙烯酯(PVAC)
can be mixed together to form PVP-VA.
混合在一起就形成了聚乙烯吡咯烷酮共聚物(PVP-AC)
This is where the gluing metaphor comes in.
也就是说“把头发黏在一起”的原因
PVP is actually an ingredient in wood glue as well.
PVP实际上也是木材胶水的一种原料
For how these polymers work,
关于这些聚合物的原理
here’s MS. BEAUTYPHILE:
《爱美太太》上这么说:
So as soon as you spray a coat on your hair,
当你在头发上喷了一层发胶
the liquid hairspray connects individual hair fibers wherever they happen to touch.
液体发胶就会把挨着的发丝黏在一起
The hairspray dries at this intersection
发丝连接处的发胶会变干
and the polymers bond with themselves,
聚合物之间也相互黏合
holding hair in the right place.
使头发固定成你想要的形状
In general, formulas try to have a good balance of tackiness and flexibility,
通常 发胶的配方会平衡它的黏性和灵活性
so that your do is locked in the place,
所以你的头发可以很好的定型
but it also has some flow.
同时也能轻微地飘动
The bulk of hairspray is a liquid that helps keep
发胶的大部分是液体
these polymers dissolved in the aerosol spray can.
这些液体使聚合物溶解在喷雾瓶中
Previously, these liquids were ethanol
以前 这些液体含有酒精
or other volatile organic compounds,
或其他易挥发的有机合成物
which are compounds that can easily go airborne.
这些合成物很容易在空气中传播
Great for mohawks, but not for the environment.
这对莫霍克族很好 但对环境不友好
Some VOCs can also be bad for your health.
其中某些挥发性有机化合物也会危害人的身体健康
So starting in the late 1990s,
所以从九十年代末开始
hairspray companies had to reduce
发胶公司不得不在配方中
VOCs and add water to their formulas.
减少挥发性有机物 增加水份
These watered-down formulas don’t hold hair quite as well,
水稀释后的配方 定型效果没有以前的好
which is part of the reason you don’t see 80s‘ dos anymore.
这也是你再也看不到 八十年代发型的部分原因
We can think of a couple of other reasons, too.
还有一些其他的原因
How Rude!
太没礼貌了!
To compensate, current formulas
作为补偿 如今的配方
also have other hairdo-riffic chemicals:
也加入了其他对发型有益的化学物质:
Plasticizing agents that make the polymer film more flexible
增塑剂能使聚合物薄膜更加的柔软
and keep your hair moisturized.
并且起到保湿作用
As well as Silicones to help hair dry faster,
以及硅能帮助头发快速干燥
increase moisture resistance,
保持足够的水分
and generally make your hair feel less like brittle
且通常会使你的头发看起来
plastic and more like hair.
更像是头发 而不是易碎的塑料
Lastly, hairsprays also include a propellant that…
最后呢 发胶里还有一种推进剂……
helps propel the spray out of the can.
使发胶能轻松喷出
These used to be chlorofluorocarbon gases (CFCs),
这个推进剂曾经是氯氟烃气体(CFCs)
but those are bad for the ozone layer.
但它们会破坏臭氧层
So now most aerosol cans use hydrocarbon propellants
所以现在大多数喷瓶用碳氢化合物替代
like butane and propane instead.
比如丁烷和丙烷
So your hair looks great all day,
所以 即使你在上班的路上下雨了
even when it drizzles on your way to work.
你的头发也会一整天都美美的
To get hairspray out, you’ll
想要把发胶弄掉的话
need to break those polymer bonds.
你就得破坏掉这些聚合物的黏合
You can do that physically,
你可以用蛮力
either by mistake or on purpose.
不论是无意还是有意
Or, you can use shampoo…
或者 你也可以用洗发水……
We want to give a huge thank you to YouTube
非常感谢YouTube
for helping to make this video possible.
使这个视频成功上传
Big thank yous to Lex Flemming of Made You Look
特别感谢来自《搞定你装扮》的Lex Flemming
and Trina Espinoza of MS. BEAUTYPHILE.
和来自《爱美太太》的Trina Espinoza
Be sure to check out both of their awesome YouTube channels.
一定要去看看她们超棒的YouTube频道哦
Seriously, you’ll thank us.
说真的 你会感谢我们的
Let us know what hair products you swear by.
留言评论你所信赖的美发产品吧
Even if it’s just a brush or nothing at all.
即使只有一把梳子 或者什么都不用
You do you.
做你自己就好
And thanks for watching!
感谢观看!

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快来看看发胶的工作原理吧~

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视频来源

https://www.youtube.com/watch?v=haP-EaElL-M

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