They can not trap as much air as the wool yarns, and do not maintain an effective barrier against heat transfer.

它們不能夠像羊毛的紗線一樣儲(chǔ)存那么多空氣，因此不能保持一個(gè)有效的阻擋層以抵擋熱量交換av在线官网国产。

They may melt at relatively low temperatures and resolidify in the form of a foam, which serves as a barrier to heat transfer from the flame to the substrate

阻燃劑在相對較低的溫度時(shí)會(huì)熔化国产性爱一级，然后重新固化成泡沫狀，這樣就形成了一個(gè)屏障亚洲精品电影久久久久久，阻止了從火焰向織物的熱傳遞天堂黄色网。

Flame retardants may interrupt or change the decomposition process in several ways:(1)they may melt at relatively low temperatures and resolidify in the form of a foam, which serves as a barrier to heat transfer from the flame to the substrate;(2) they may be converted upon heating into acids or bases, which catalyze the decomposition of the substrate at lower temperatures than are required for the formation of volatile combustibles;(3 ) they may decompose orsublime upon heating to release large amounts of nonflammable vapors which exclude oxygen from the flame; or (4) they may react with chemicakl species within the flame to stop the combustion reaction.

阻燃劑可以從幾個(gè)方面干涉或改變織物的分解過程：（1）阻燃劑在相對較低的溫度時(shí)會(huì)熔化，然后重新固化成泡沫狀国产原创在线观看网站，這樣就形成了一個(gè)屏障亚洲中文字幕久久精品无码网站，阻止了從火焰向織物的熱傳遞。（2）阻燃劑受熱時(shí)會(huì)分解成酸或堿偷怕自拍亚洲色图，這些酸或堿在低于可生成揮發(fā)性可燃物的溫度下可以催化織物的分解韩日性交。（3）阻燃劑在受熱時(shí)會(huì)分解或升華，同時(shí)釋放出大量不可燃?xì)怏w717福利电影网，這就阻止了氧氣對火焰的供應(yīng)久久久91精品国产一区不卡。（4）阻燃劑可以與火焰中的化學(xué)物質(zhì)起反應(yīng)，使燃燒反應(yīng)終止强奸,com。

With the development of manned space flight and aeronautics, the technical requirements for heat protection material and thermal barrier coating, etc., are increasingly enhanced.

隨著載人航天及航空技術(shù)的發(fā)展国产AⅤ精品一区二区四区，對航天器的防熱材料和航空發(fā)動(dòng)機(jī)的熱障涂層等技術(shù)的要求日益增高。

First of all, the factors which influence the thermal barrier effect and the relationship between the factors and heat resistance were analyzed. Then, the paper gave the mathematical model of the effect of thermal conductivity, coating thickness, environment temperature difference, and heat exchange coefficient on thermal barrier effect.

研究主要內(nèi)容如下：本文首先分析了隔熱效果的幾種影響因素以及它們與隔熱效果之間的關(guān)系精品一级在线免费，推導(dǎo)出了包含熱障涂層厚度精品交在线视频、導(dǎo)熱系數(shù)、環(huán)境溫差和對流系數(shù)等在內(nèi)的影響因素與隔熱效果之間的數(shù)學(xué)模型亚洲激情乱伦。

heat barrier：熱障

hearty 衷心的 | heat barrier 熱障 | heat energy 熱能

heat barrier：熱障 =熱壘

heat 熱= 熱學(xué),熱,熱量 | heat barrier 熱障 =熱壘 | heat capacity 熱容[量]

heat barrier：熱屏[障]

heat balance calculation 熱平衡計(jì)算 | heat barrier 熱屏[障] | heat capacity 熱容(量)

heat barrier：熱障,熱載體

heat balance table || 熱平衡表 | heat barrier || 熱障,熱載體 | heat booster || 加熱器

Heat barrier material：隔熱材料

Headrest||靠枕 | Heat barrier material||隔熱材料 | Heat forming||熱成型