重慶紫外線耐候試驗(yàn)箱廠家

Q8/UV紫外光加速老化試驗(yàn)機(jī)主要用于模擬對(duì)陽(yáng)光、潮濕和溫度對(duì)材料的破壞作用；材料老化包括褪色、失光、強(qiáng)度降低、開(kāi)裂、剝落、粉化和氧化等。紫外光加速老化試驗(yàn)機(jī)通過(guò)模擬陽(yáng)光、冷凝、模仿自然潮濕，試樣在模擬的環(huán)境中試驗(yàn)幾天或幾周的時(shí)間，可再現(xiàn)戶外可能幾個(gè)月或幾年發(fā)生的損壞。     
        Q8/UV紫外光加速老化試驗(yàn)機(jī)中，紫外燈的熒光紫外等可以再現(xiàn)陽(yáng)光的影響，冷凝和水噴淋系統(tǒng)可以再現(xiàn)雨水和露水的影響。整個(gè)的測(cè)試循環(huán)中，溫度都是可控的。典型的測(cè)試循環(huán)通常是高溫下的紫外光照射和相對(duì)濕度在100％的黑暗潮濕冷凝周期；典型應(yīng)用在油漆涂料、汽車(chē)工業(yè)、塑膠制品、木制品、膠水等。 模擬陽(yáng)光      
    陽(yáng)光中的紫外線是造成大多數(shù)材料耐久性能破壞的主要因素。我們使用紫外燈來(lái)模擬陽(yáng)光中的短波紫外部分，它產(chǎn)生很少的可見(jiàn)光或紅外光譜能量。我們可以根據(jù)不同的測(cè)試要求選擇不同波長(zhǎng)的UV紫外燈，因?yàn)槊糠N燈在總的紫外線輻照能量和波長(zhǎng)都不一樣。www.oven.cc 通常，UV燈管可分為UVA和UVB兩種。      
Q8/UV燈管       
    UVA-340燈管：UVA-340 燈管可*地模擬太陽(yáng)光中的短波紫外光，即從365 納米到太陽(yáng)光截止點(diǎn) 295 納米的波長(zhǎng)范圍。     
    UVB-313燈管：UVB-313 燈管發(fā)出的短波紫外光比通常照射在地球表面的太陽(yáng)紫外線強(qiáng)烈，從而可以zui大程度的加速材料老化。然而，該燈管可能會(huì)對(duì)某些材料造成不符合實(shí)際的破壞。UVB-313 燈管主要用于質(zhì)量控制和研究開(kāi)發(fā)，或?qū)δ秃蛐?的材料運(yùn)行測(cè)試。
    UVA-351燈管：模擬透過(guò)窗玻璃的陽(yáng)光紫外光，它對(duì)于測(cè)試室內(nèi)材料的老化zui為有效。   

潮濕冷凝環(huán)境      
    在很多戶外環(huán)境中，材料每天的潮濕時(shí)間可長(zhǎng)達(dá)12小時(shí)。研究表明造成這種戶外潮濕的主要因素是露水，而不是雨水。Q8/UV通過(guò)*的冷凝功能來(lái)模擬戶外的潮濕侵蝕。在試驗(yàn)過(guò)程中的冷凝循環(huán)中，測(cè)試室底部蓄水池中的水被加熱以產(chǎn)生熱蒸氣，并充滿整個(gè)測(cè)試室，熱蒸汽使測(cè)試室內(nèi)的相對(duì)濕度維持在100％，并保持一個(gè)相對(duì)高溫。試樣被固定在測(cè)試室的側(cè)壁，從而試樣的測(cè)試面曝露在測(cè)試室內(nèi)的環(huán)境空氣中。試樣向外的一面暴露在自然環(huán)境中具有冷卻效果，導(dǎo)致試樣內(nèi)外表面具備溫差，這一溫差的出現(xiàn)導(dǎo)致試樣在整個(gè)冷凝循環(huán)過(guò)程中，其測(cè)試面始終有冷凝生成的液態(tài)水。 
    由于戶外曝曬接觸潮濕的時(shí)間每天可以長(zhǎng)達(dá)十幾小時(shí)，因此典型的冷凝循環(huán)一般持續(xù)幾個(gè)小時(shí)。Q8/UV提供兩種潮濕模擬方法。應(yīng)用zui多的是冷凝方法，它是模擬戶外潮濕侵蝕的方法。所有的Q8/UV型號(hào)都可運(yùn)行冷凝循環(huán)。因?yàn)橛行?yīng)用條件也要求使用水噴淋以達(dá)到實(shí)際的效果，所以有些Q8/UV型號(hào)既可運(yùn)行冷凝循環(huán)又可運(yùn)行水噴淋循環(huán)。     

溫度控制      
    在每個(gè)循環(huán)中，溫度都可控制在一個(gè)設(shè)定值。同時(shí)黑板溫度計(jì)可以監(jiān)控溫度。溫度的提高可以加速老化的進(jìn)程，同時(shí)，溫度的控制對(duì)于測(cè)試的可再現(xiàn)性也是很重要的。     

水噴淋系統(tǒng)      
    對(duì)于某些應(yīng)用而言，水噴淋能更好地模擬zui終使用的環(huán)境條件。水噴淋在模擬由于溫度劇變和由于雨水沖刷所造成的熱沖擊或機(jī)械侵蝕是非常有效的。在某些實(shí)際應(yīng)用條件下，例如陽(yáng)光下，聚集的熱量由于突降的陣雨而迅速消散時(shí)，材料的溫度就會(huì)發(fā)生急劇變化，產(chǎn)生熱沖擊，這種熱沖擊對(duì)于許多材料而言是一種考驗(yàn)。Q8/UV的水噴淋可以模擬熱沖擊和/或應(yīng)力腐蝕。       
    噴淋系統(tǒng)有12個(gè)噴嘴，在測(cè)試室的每一邊各有6個(gè)；噴淋系統(tǒng)可運(yùn)行幾分鐘然后關(guān)閉。這短時(shí)間的噴水可快速冷卻樣品，營(yíng)造熱沖擊的條件。     

照射強(qiáng)度控制：可選      
    選配照射強(qiáng)度控制選件可得到精確型和重復(fù)性好的測(cè)試結(jié)果；光強(qiáng)控制系統(tǒng)允許用戶根據(jù)不同的測(cè)試要求設(shè)置不同的光照強(qiáng)度。通過(guò)其反饋回路裝置精確控制照射強(qiáng)度；同時(shí)也可以延長(zhǎng)熒光燈的使用壽命  

重慶紫外線耐候試驗(yàn)箱廠家主要技術(shù)指標(biāo)

Q8/UV紫外光加速老化試驗(yàn)機(jī)測(cè)試方法

 
通用

• ISO 4892-1 Plastics- Methods of exposure to laboratory light sources-Part 1: General Guidance 
• ASTM G-151, Standard Practice for Exposing Nonmetallic Materials in Accelerated Test Devices that Use Laboratory Light Sources 
• ASTM G-154, Standard Practice for Operating Fluorescent Light Apparatus for UV Exposure of Non-Metallic Materials 
• British Standard BS 2782: Part 5, Method 540B （Methods of Exposure to Lab Light Sources） 
• SAE J2020, Accelerated Exp. of Automotive Exterior Materials Using a Fluorescent UV/Condensation Apparatus 
• JIS D 0205, Test Method of Weatherability for Automotive Parts （Japan） 
• GB/T 16422.1，塑料實(shí)驗(yàn)室光源暴露試驗(yàn)方法 第1部分：總則 
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涂料

• ISO 11507, Paints & varnishes-Exposure of coatings to artificial weathering-Exposure to fluorescent UV and water 
• ISO 20340, Paints & varnishes –Performance requirements for protective paint systems for offshore and 
     related structures 
• ASTM D-3794, Standard Guide for Testing Coil Coatings 
• ASTM D-4587, Standard Practice for Light/Water Exposure of Paint 
• US Government, FED-STD-141B 
• US Govt., Federal Specification TT-E-489H, Enamel, Alkyd, Gloss, Low VOC Content 
• US Govt., Federal Specification TT-E-527D, Enamel, Alkyd, Lusterless, Low VOC Content 
• US Govt., Federal Specification TT-E-529G, Enamel, Alkyd, Semigloss, Low VOC Content 
• US Govt., Federal Specification TT-P-19D Paint, Latex, Acrylic Emulsion, Ext. Wood & Masonry 
• NACE Standard TM-01-84 Procedures for Screening Atmospheric Surfaced coatings  
• GM4367M Topcoat Materials - Exterior 
• GM 9125P Laboratory Accelerated Exposure of Automotive Material 
• Korean Standard M5982-1990, Test Method for Accelerated Weathering 
• Spanish Std, UNE 104-281-88 Accelerated Testing of Paints and Adhesives with Fluorescent UV Lamps 
• Israeli Standard No. 330, Steel Windows 
• Israeli Standard No. 385, Plastic Windows 
• Israeli Standard No. 935, Road Marking Paint 
• Israeli Standard No. 1086, Aluminum Windows 
• NISSAN M0007, Fluorescent UV/Condensation Test 
• JIS K 5600-7-8, Testing Methods for Paints 
• MS 133: Part F16, Methods of Test for Paints and Varnishes: Part F16: Exposure of Coatings to Artificial Weathering- Exposure to Fluorescent UV and Water （ISO 11507） 
• NBR-15.380 Paints for buildings–Methods for performance evaluation of paints for non-industrial buildings – Resistance to UV irradiation/water vapor condensation, by accelerated test 
• prEN 927-6 Paints & varnishes–Coating materials and coating systems for exterior wood – Pt. 6: Exposure of wood coatings to artificial weathering using fluorescent UV and water 
• GB/T 12967.4，鋁及鋁合金陽(yáng)極氧化 著色陽(yáng)極 氧化膜耐紫外光性能的測(cè)定 
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紡織品

• AATCC Test Method 186, Weather Resistance: UV Light and Moisture Exposure 
• ACFFA Test Method for Colorfastness of Vinyl Coated Polyester Fabrics 
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印刷油墨
 • ASTM F1945, Lightfastness of Ink Jet Prints Exposed to Indoor Fluorescent Lighting ________________________________________
橡膠
 • GB/T 16585，硫化橡膠人工氣候老化（熒光紫外燈）試驗(yàn)方法
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電工電子產(chǎn)品
 • GB/T 19394，光伏（PV）組件紫外試驗(yàn)
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粘合劑和密封劑

• ASTM C 1501, Standard Test Method For Color Stability of Building Construction Sealants as Determined byLaboratory Accelerated Weathering Procedures 
• ASTM C-1184, Specification for Structural Silicone Sealants 
• ASTM C-1442, Standard Practice for Conducting Tests on Sealants Using Artificial Weathering Apparatus 
• ASTM D-904, Standard Practice for Exposure of Adhesive Specimens to Artificial Light 
• ASTM D-5215, Standard Test Method for Instrumental Evaluation of Staining of Vinyl Flooring by Adhesives 
• American Plywood Assn., Approval Procedures for Synthetic Patching Materials, Section 6 
• Spanish Std, UNE 104-281-88 Accelerated Testing of Paints and Adhesives with Fluorescent UV Lamps 
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塑料

• ISO 4892 Plastics - Methods of Exposure to Laboratory Light Sources-Part 3: Fluorescent UV Lamps 
• DIN 53 384, Testing of plastics, Artificial Weathering and Exposure to Artificial Light 
• Spanish Standard UNE 53.104 （Stability of Plastics Materials Exposed to Simulated Sunlight） 
• Israeli Standard No. 385, Plastic Windows  
• JIS K 7350, Plastics - Methods of Exposure to Laboratory Light Sources-Part 3: Fluorescent UV Lamps 
• ASTM D-1248, Standard Specification for Polyethylene Plastics Extrusion Materials for Wire and Cable 
• ASTM D-4329, Standard Practice for Light/Water Exposure of Plastics 
• ASTM D-4674, Test Method for Accelerated Testing for Color Stability of Plastics Exposed to Indoor 
     Fluorescent Lighting and Window-Filtered Daylight 
• ASTM D-5208, Standard Practice for Exposure of Photodegradable Plastics 
• ASTM D-6662,  Standard Specification for Plastic Lumber Decking Boards 
• ANSI C57.12.28 Specification for Accelerated Weathering of Padmounted Equipment Enclosure Integrity 
• ANSI, A14.5 Specification for Accelerated Weathering of Portable Reinforced Plastic Ladders 
• Edison Electrical Inst. Specification for Accelerated Weathering of Padmounted Equip. Enclosure Integrity 
• Wisconsin Electric Power Specification for Polyethylene Signs 
• GB/T 18950，橡膠和塑料軟管 靜態(tài)下耐紫外線性能測(cè)定 
• GB/T 16422.3，塑料實(shí)驗(yàn)室光源暴露試驗(yàn)方法 第3部分：熒光紫外燈 
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屋頂材料

• ASTM D-4799, Test Method for Accelerated Weathering of Bituminous Roofing Materials 
• ASTM D-4811, Standard Specification for Nonvulcanized Rubber Sheet Used as Roof Flashing 
• ASTM D-3105, List of Test Methods for Elastomeric and Plastomeric Roofing & Waterproofing 
• ASTM D-4434, Standard Specification for PVC Sheet Roofing 
• ASTM D-5019, Standard Specification for Reinforced Non-Vulcanized Polymeric Sheet Used in Roofing Membrane 
• ANSI/RMA IPR-1-1990 Req. for Non-Reinforced Black EPDM Sheet for Roofing Membrane 
• ANSI/RMA IPR-2-1990 Req. for Fabric-Reinforced Black EPDM Sheet for Roofing Membrane 
• ANSI/RMA IPR-5-1990 Req. for Non-Reinforced Non-Black EPDM Sheet for Roofing Membrane 
• ANSI/RMA IPR-6-1990 Req. for Fabric-Reinforced Non-Black EPDM Sheet for Roofing Membrane 
• British Standard BS 903: Part A54 Annex A & D, Methods of Testing Vulcanized Rubber 
• CGSB-37.54-M, Canadian General Standards Board Spec. for PVC Roofing & Waterproofing Membrane 
• DIN EN  534, Corrugated bitumen sheets 
• EOTA TR 010, Exposure procedure for artificial weathering 
• RMA Specification for Reinforced Non-Vulcanized Chlorosulfonated Polyethylene Sheet for Roofing Membrane 
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復(fù)合材料

• Israeli Standard No. 385, Anodic Coatings on Aluminum 
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紫外光加速老化試驗(yàn)機(jī),紫外線加速耐候試驗(yàn)機(jī),