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墙体保温系统的安全技术问题
华东保温材料 / 2015-12-10

日前,有关墙体保温出现开裂的问题到底跟保温材料有多大的关系又开始受到业内人士的关注。其实这样的问题已经讨论了N年N次,感觉到目前为止仍然还没有一个最权威的定论。是什么原因?主要是因为缺少整体的系统。
A few days ago, the problem of the wall heat insulation problems in the end with the heat preservation material has much to do with the industry's attention. In fact, this problem has been discussed for N years N times, feel so far there is still no one of the most authoritative conclusion. What is the reason? Mainly because of the lack of the overall system.
对墙体保温系统的研究涉及多个方面,对于保温系统出现开裂的问题,在此仅从“温度场应力对外墙保温系统的影响"做个简要说明。这个问题说到底就是保温系统上墙后能否经受住雨、雪、阳光等自然环境变化的影响,保温系统的整体质量不出现问题。
The research on the wall heat preservation system involves many aspects, for the problem of cracking in the insulation system, the influence of the temperature field stress on the external wall insulation system is briefly described. This problem is the final analysis of the insulation system can withstand the impact of the natural environment such as rain, snow, sun, etc., the overall quality of the insulation system is not a problem.
相关标准中要求要对保温系统进行大型耐候性试验,即在试验环境下进行多次高温-淋水循环和加热-冷冻循环,保温系统不出现变形或裂痕。
In the relevant standards, the thermal insulation system is required to carry out large-scale weathering test, that is, in the experimental environment for many high temperature - water pouring and heating - refrigeration cycle, heat insulation system does not appear deformation or cracks.
保温系统包括保温材料、抗裂粘结材料、饰面材料,这些材料所处系统的不同位置受外界环境的影响也不一样。保温系统外饰面长期处于外界环境的变换中,受膨胀和收缩的影响最大,这样反复影响会使饰面材料老化、会使粘结材料失去粘结力失去强度。而保温系统的内侧由于有保温材料具有的热阻性,避免了对内侧墙体的影响(当然这是基于保温材料自身的稳定即不存在变形的前提下)。保温系统内外两侧所处温度场不同,考量着保温系统性能的优劣,在此当中,各种砂浆材料将发挥重要的作用。
Heat preservation system includes heat preservation material, anti cracking and bonded materials and finishing materials, which are influenced by the environment of the outside world. Exterior decoration of the insulation system is in the transformation of external environment, the influence of expansion and shrinkage is the biggest, so that the impact of the repeated impact will make the material aging, will make the bonding material loss of bond strength. The inner insulation material has the thermal resistance, which is based on the thermal insulation material itself, which is based on the thermal insulation material. Heat preservation system inside and outside the two sides of the temperature field is different, considering the performance of the insulation system, in which, a variety of mortar material will play an important role.
现在,只要出现变形和开裂的问题,很多人就开始睁大眼睛、拉开嗓门,往往容易出现一些片面的倾向。分析温度场应力对保温系统的影响,务必还要对保温系统的构造进行研究,各个构造部位承担着什么功能,需要解决哪些问题,要一一解剖。
Now, as long as the deformation and cracking problems, many people began to open eyes, open your voice, often prone to some one-sided tendency. The analysis of the influence of temperature field stress on the insulation system, it must be the construction of the insulation system, the various structural parts of the function, need to solve the problem, to one one anatomy.
据了解,目前对于具备较系统地开展墙体保温研究的企事业单位在全行业市场所占的比重十分低,缺少技术研发人员的现象非常明显,缺少资金投入更是一个非常现实的问题。试问两个问题“企业有多少专业从事研发的人员?"“企业每年投入的研发资金有多少?"恐怕没有多少企业能够理直气壮地回答。正是因为缺少这些,很多企业都抱着“拿来主义"的思想,别人这样做了我也可以这样做。
It is understood that the system has a more systematic study of the thermal insulation of enterprises and institutions in the whole industry, the proportion is very low, the lack of technical R & D personnel phenomenon is very obvious, lack of capital investment is a very real problem. Ask two questions: "how many enterprise specializing in R & D personnel? What is the annual investment in R & D funds of enterprises? "I'm afraid not many companies can confidently answer. It is because of lack of these, many companies are holding the "doctrine" of the idea, others do so I can do this.
“拿来主义"害人害己。因此,出现问题也就不足为怪了。
"The doctrine of" harm to others. Therefore, the problem is not surprising.

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