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      高低溫試驗箱ASTM D4434標準

      來源:本站 發布時間:2018-11-03 11:02:00 閱讀:1030

      本頁面標準信息均來源于網絡收集,或由參與標準制定的供應商提供,只作為參考使用,為確保測試結果的準確性、節省您的時間,如需ASTM D4434標準詳細信息或ASTM D4434具體測試方法,歡迎與我們技術人員聯系或給我們留言,我們將為您相關的技術支持。

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      ASTM D4434標準介紹

      聚氯乙烯屋面薄板的標準規范:

      本規范規定了擬用于單層屋頂薄膜的、用聚氯乙烯樹脂作為初級聚合物而制造的柔性薄板空氣暴露測試程序。

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      Q-sun氙燈試驗箱ASTM D4434測試方法?

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      ASTM D4434英文簡介

      This specification covers flexible fiber- or fabric-reinforced sheet made from poly(vinyl chloride) resin as the primary polymer intended for use in single-ply roofing membranes exposed to the weather. The sheet shall contain. In-place roof system design criteria such as fire resistance, material compatibility, wind uplift resistance, in-situ shrinkage, among others, are beyond the scope of this specification. The physical requirements for which the sheet materials shall be tested on and shall conform accordingly to are as follows: overall thickness and thickness over scrim; tensile strength at break; breaking strength; elongation at break; seam strength; retention of properties after heat aging; tear resistance and tearing strength; low temperature bend; cracking and crazing after accelerated weathering test; linear dimensional change; change in weight after immersion in water; and static and dynamic puncture resistance.

      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.

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      1. Scope

      1.1 This specification covers flexible sheet made from poly(vinyl chloride) resin as the primary polymer intended for use in single-ply roofing membranes exposed to the weather. The sheet shall contain reinforcing fibers or reinforcing fabrics.

      1.2 The tests and property limits used to characterize the sheet are values intended to ensure minimum quality for the intended purpose. In-place roof system design criteria, such as fire resistance, material compatibility, wind uplift resistance, in-situ shrinkage, among others, are factors that must be considered but are beyond the scope of this specification.

      1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.

      1.4 This standard may involve hazardous materials, operations, and equipment. 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 limitation prior to use.

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      2. Referenced Documents (purchase separately)

      ASTM Standards

      D570 Test Method for Water Absorption of Plastics

      D638 Test Method for Tensile Properties of Plastics

      D751 Test Methods for Coated Fabrics

      D1004 Test Method for Tear Resistance (Graves Tear) of Plastic Film and Sheeting

      D1204 Test Method for Linear Dimensional Changes of Nonrigid Thermoplastic Sheeting or Film at Elevated Temperature

      D2136 Test Method for Coated Fabrics--Low-Temperature Bend Test

      D3045 Practice for Heat Aging of Plastics Without Load

      D5602 Test Method for Static Puncture Resistance of Roofing Membrane Specimens

      D5635 Test Method for Dynamic Puncture Resistance of Roofing Membrane Specimens

      D7635/D7635M Test Method for Measurement of Thickness of Coatings Over Fabric Reinforcement

      G151 Practice for Exposing Nonmetallic Materials in Accelerated Test Devices that Use Laboratory Light Sources

      G154 Practice for Operating Fluorescent Light Apparatus for UV Exposure of Nonmetallic Materials

      G155 Practice for Operating Xenon Arc Light Apparatus for Exposure of Non-Metallic Materials

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      ▼ASTM D4434第三方檢測機構

      以上標準信息來自互聯網搜索整理,如需了解完整的ASTM D4434的信息或ASTM D4434標準解讀,歡迎詳詢。

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