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保温材料如何辨别好坏?
作者:admin 来源:本站 发布时间:2017-11-07 13:20:32 浏览次数:383
随着国家对建筑节能的推进,一系列政策规范相应出台实施,保温材料一度被推到风口浪尖,加之也有很多人都在为选择保温材料而拿不定主意。越来越多的人开始注重保温材料的导热系数及吸水率。然而,如何选择一种保温材料,导热系数高吸水率好就真的是好的保温材料吗?究竟保温材料如何辨别好坏?

With the promotion of building energy conservation in China, a series of policy norms corresponding implementation, insulation materials were once pushed to the cusp, and many people are in the choice of insulation materials and uncertain. More and more people begin to pay attention to the thermal conductivity and water absorption of thermal insulation materials. However, how to choose a kind of thermal insulation material, high thermal conductivity, good water absorption is really a good insulation material? How to distinguish the good and bad of heat insulation material?

挤塑板厂家

保温材料如何辨别好坏?
Insulation material how to distinguish good or bad?
很多人在选择保温材料作为外保温主材时仅凭导热系数或吸水率的高低作为评价依据,而实际上导热系数是衡量保温材料的保温性能的一项指标,并且也是选择保温材料的重要参考项,但衡量保温材料好坏的指标并非只是导热系数这一项就能够决定的,一定要参考以下几项指标综合判断:
A lot of people in the choice of insulation material as insulation material when only thermal conductivity or water absorption rate as the evaluation basis, but in fact the thermal conductivity is an index to measure insulation performance of insulation materials, an important reference and selection of insulation material, the index is not but a measure of insulation materials is only the coefficient of thermal conductivity it can decide, be sure to refer to the following indicators comprehensive judgment:
1、吸水率:建筑保温是为建筑穿上一件棉袄,这件棉袄除了要保温外,还不能吸水。
1, water absorption: building insulation for building wearing a jacket, this jacket in addition to heat preservation, not water.
2、透气性:透气性这项技术指标是指水汽扩散阻力。如果外墙外保温系统透气性不好,水气扩散受阻,一是阻碍墙体向外排湿,影响饰面涂料的颜色;二是产生应力,使涂膜鼓泡,脱落;三是导致墙身含湿量逐步增加,产生冷凝水富集,从而给墙体热工、结构等性能带来不利影响,四是即使外墙外保温系统节能达标了,但却造成室内空气浑浊,不适合人居。
2, permeability: permeability of this technical index refers to water vapor diffusion resistance. If the permeability is not good exterior insulation system, water vapor diffusion is blocked, a blocking wall outward moisture, effect of decorative coating color; two is to produce stress, make the film bubbling off; three is the result of the wall moisture content gradually increased, condensed water enrichment, adverse impact to the wall the structure, thermal performance, four is the standard system of energy-saving exterior insulation even, but caused by indoor air pollution, not suitable for living.
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