压在透明的玻璃上c_又色又爽又黄又免费的视频软件_av无码专区亚洲av波多野结衣_国产在线每日都有更新 - www国产视频

阻燃防火材料-網上貿易平臺 | | WAP瀏覽
服務熱線:4006555305
當前位置: 首頁 » 防火測試中心 » 各國標準法規 » 美國 » 正文

ASTM C1136隔熱用柔性,低滲透蒸氣阻化劑的標準規范

放大字體  縮小字體 發布日期:2012-02-13   瀏覽次數:485  分享到: 分享到騰訊微博
ASTM C1136隔熱用柔性,低滲透蒸氣阻化劑的標準規范
ASTM C1136 Standard Specification for Flexible, Low Permeance Vapor Retarders for Thermal Insulation
ASTM C1136隔熱用柔性,低滲透蒸氣阻化劑的標準規范
This specification covers vapor retarders for thermal insulation, specifically, flexible materials with permeance and surface burning characteristics. Vapor retarders are classified based on vapor retardance and strength properties: Types I, II, III, IV, V, and VI. The following test methods shall be performed: water vapor permeance; surface burning characteristics; tensile strength; dimensional stability; fungi resistance; thermal integrity of flexible water vapor retarders; burst strength of vapor retarders; permanence of flame retardancy; and elevated temperature and humidity resistance of vapor retarders for insulation.
This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
Significance and Use
Entrapment of water in thermal insulation caused by condensation of water vapor that has penetrated into the insulation is detrimental to the thermal resistance of the insulation. For this reason, in certain installations where temperature and moisture conditions have the potential to create a vapor driving force toward the insulation, a deterrent to the passage of such vapor into the installed insulation needs to be provided. This is the primary function of the vapor retarder.
In addition to the function stated in 9.1, a vapor retarder has the potential to provide physical protection and added strength to the insulation system.
This specification is used to specify material by physical property requirements that address the above prerequisites. The designer of an insulation system, after determining the degree of protection needed for the insulation, can use this specification to specify the appropriate type of vapor retarder when one is required.
1. Scope
1.1 This specification covers vapor retarders for thermal insulation, specifically, flexible materials with permeance of 0.10 perm or lower and surface burning characteristics of 25 flame spread/50 smoke or lower. These materials are intended for use at surface temperatures of −20 to 150°F (−29 to 66°C). It does not cover mastics or barrier coatings applied in liquid form, nor materials intended for use as weather barriers.
1.2 This is a material specification and does not imply that an installed system using these materials will provide the physical properties specified in Section 6.
1.3 This specification provides physical requirements for vapor retarders. Practice C755 provides assistance in solving problems related to moisture vapor transmission through thermal insulation materials.
1.4 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.5 The following precautionary caveat pertains to the test methods portion only, Section 10, of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

2. Referenced Documents (purchase separately)
ASTM Standards
C168 Terminology Relating to Thermal Insulation
C755 Practice for Selection of Water Vapor Retarders for Thermal Insulation
C1258 Test Method for Elevated Temperature and Humidity Resistance of Vapor Retarders for Insulation
C1263 Test Method for Thermal Integrity of Flexible Water Vapor Retarders
C1338 Test Method for Determining Fungi Resistance of Insulation Materials and Facings
D774/D774M Test Method for Bursting Strength of Paper
D828 Test Method for Tensile Properties of Paper and Paperboard Using Constant-Rate-of-Elongation Apparatus
D882 Test Method for Tensile Properties of Thin Plastic Sheeting
D1204 Test Method for Linear Dimensional Changes of Nonrigid Thermoplastic Sheeting or Film at Elevated Temperature
E84 Test Method for Surface Burning Characteristics of Building Materials
E96/E96M Test Methods for Water Vapor Transmission of Materials
TAPPI Standards
T461 Flame Resistance of Treated Paper and Paperboard
Index Terms
flexible; low permeance; thermal insulation; vapor retarders; Condensation; Flammability--building materials; Humidity; Low-temperature service applications; Puncture testing; Thermal insulating materials--specifications; Thermal insulating materials (water vapor transmission); Vapor barriers--specifications; Water entrapment; Water vapor retarders--specifications; Water vapor transmission (WVT)--thermal insulation;

  詳情請咨詢
  防火資源網-阻燃防火測試中心
  電話:(+86)0592-5056213
  傳真:(+86)0592-5105807
  郵件:firetest@firetc.com

凡注明"防火資源網"的所有作品,由<防火資源網>整理編輯,任何組織未經<防火資源網>及其擁有者授權,不得復制、轉載、摘編或利用其它方式應用于任何商業行為。

 
 
[ 防火測試中心搜索 ]  [ ]  [ 告訴好友 ]  [ 打印本文 ]  [ 關閉窗口 ]  [ 返回頂部 ]

 

 
 
推薦防火測試
推薦圖文
點擊排行
 
 
網站首頁 | 廣告服務 | 關于我們 | 聯系方式 | 服務協議 | 版權聲明 | 網站地圖 | 友情鏈接 | 網站留言 | 舊版本 | 閩ICP備09009213號
?2019-2021 FIRETC.COM All Rights Reserved ? 備案號:閩ICP備09009213號-1在線客服 點擊QQ交談/留言 點擊QQ交談/留言