#ASTM E96

[saichenginstrument]

What are ASTM D1653 and ASTM E96

Water Vapor Transmission, Water Vapor Permeance, Water Vapor Permeability

Water vapor transmission (WVT) is determined by dividing the rate of weight change by the area of the test specimen. Water vapor permeance is in general the degree to which a material admits water vapor. Water vapor permeability is related with the thickness of the material.

Calculation of Water Vapor Transmission, Water Vapor Permeance, Water Vapor Permeability

The permeance and permeability are calculated from the WVT. The permeance is calculated by dividing the WVT by the vapor pressure across the material under test. The permeability is calculated by multiplying the permeance by the thickness of the material.

ASTM D1653 standard and Test Method

ASTM D1653 standard determines the water vapor transmission rate of films of paint,lacquer,vanish, and other organic coatings. The films may be free films or be applied to porous substrates. Under ASTM D1653 standard, there are two test methods: dry cup method and wet cup method.

ASTM D1653 Wet Cup Method

By sealing a film of the test material to the top of a vessel that is filled with water or desiccant, WVT is determined. It is called wet cup method when the vessel is filled with water. The test determines how much water vapor is lost through the film. The dish loses water over the course of the test so that the plot tends downward. The wet cup method is the preferred one for obtaining values that is related to conditions of use where is high relative humid.

ASTM D1653 Dry Cup Method

When the vessel is completed with desiccant, it is called the dry cup method. Through the test method, it is obviously known how much water vapor the desiccant attracts through the film. Meanwhile, the plot points upward as the dish gets water over the course of the test. The dry cup method is the preferred one for obtaining values that is related with conventional dwellings where is lower relative humid.

Rules of ASTM D1653 Test Method

At the beginning of test, the dish may gains or loses weight quickly, and then goes into a constant rate of weight change. Certainly, the process depends on the material being tested.

Attention: By the wet cup method, the values obtained are higher than ones by the dry cup method under the same conditions of air temperature and humidity.

ASTM E96 standard and Test Method

ASTM E96 standard is used to test paper, plastic films, other sheet materials, fiber-boards, gypsum and plaster products, wood products, and plastics. ASTM E96 standard introduces two basic methods: the desiccant method and the water method.

ASTM E96 Desiccant Method

The desiccant method: the test dish contains a desiccant. Leave enough space so that the shaking of the dish to mix the desiccant, which have to be done at each weighing. The test specimen is sealed to the open mouth of the dish. The rate of water vapor movement is determined by periodic weighing of the test dish.

ASTM E96 Water Method

The water method: the dish contains distilled water. Water vapor permeates through specimen into the controlled atmosphere. Through the periodic weighing of the test dish, the values can be obtained.

ASTM E96 Test Method Attention

Under different test conditions, the valued obtained may not be equivalent. As this reason, select the test conditions which are the closest with the conditions of use.

The difference of ASTM E96 standard and ASTM D1653 standard

The testing scope of ASTM E96 standard is more wider, which can evaluate many materials, including coatings which is mainly tested under ASTM D1653 standard.

ASTM D1653 includes directions for preparation of a free film, whereas ASTM E96 does not.

ASTM E96 requires that permeance values exceeding 2 perm are corrected for resistance due to still air and specimen surface. ASTM D1653 does not specify the correction.

Saicheng’ WPT-301B Water Vapor Permeability Tester which adopts gravimetric method complies with ASTM E96 standard and ASTM D1653 standard.

#water vapor transmission #water vapor permeability #ASTM D1653 #ASTM E96 #test method #dry cup method #wet cup method #desiccant method #water mehod #water vapor permeability tester #Saicheng

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Folds in the back, pockets, chest pockets and mobile pocket. Zipper with flap in front. Push button control around the wrist and life. Reflective in body. Waterproof and breathable fabric for all season comfort. Breathable. Test method ASTM E96.

Overhead shoulder design for complete freedom of movement. 

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Chống Thấm Cho Vách, Sàn Tấm Cemboard Với Flex shield color

Sơn chống thấm màu một thành phần Flex shield color  là màng chống thấm acrylic gốc nước một thành phần, thi công dạng lỏng, sẵn sàng để sử dụng. Flex shield color chứa nhựa polymer dẻo chuyên dụng, bột khoáng và các chất phụ gia để cung cấp khả năng chống tia cực tím tuyệt vời cũng như cung cấp lớp bảo vệ, chống thấm lâu dài. Sau khi đóng rắn tạo thành màng chống thấm đàn hồi, dẻo dai, không mối nối, có độ bám dính tuyệt vời với hầu hết các bề mặt tấm xi măng cemboard với các ứng dụng sàn, vách ngăn ngoài trời.

Ưu điểm nổi trội của sơn chống thấm Flex shield color cho tấm xi măng cemboard

Một thành phần, trộn sẵn,dễ sử dụng

Là hệ nước nên trong thành phần không có chứa dung môi hữu cơ cũng như kim loại nặng nên thân thiện với môi trường và an toàn cho người sử dụng

Thích hợp cho các hạng mục ngoài trời

Có khả năng che phủ các vết nứt

Khả năng che phủ tốt, chắn ánh sáng

Đàn hồi, có đặc tính phục hồi tuyệt vời

Có thể được hoàn thiện màu sắc bằng sơn nước thông thường

H���ng mục ứng dụng

Sàn xi măng cemboard, mái cemboard, tường vách ngăn ngoài trời cemboard, Hồ bơi.

Sân thượng, sê nô, nhà vệ sinh

Đóng gói

5kg

16kg

Thông số kỹ thuật

Thông số kỹ thuật Mức giới hạn Tỷ trọng (g/ml) 1.3±0.05 PH 8.0 ÷ 9.0 Hàm lượng rắn(%) >51% Độ phủ(m2/kg) 0.7÷ 0.75 Độ thấm nước (ASTM E96:1995) < 24 g/cm2 /ngày Đặc tính che phủ vết nứt</;center> Có khả năng che phủ vết nứt > 2 mm Độ kéo dài đến đứt > 150% Cường độ kéo (ASTM D412-1992) > 2.0 N/mm2 Điểm bắt cháy Không cháy (gốc nước) Độ dày màng ướt/lớp 0.4 mm Độ dày lớp màng khô/lớp 0.8 mm

Thành phần nguyên liệu

Acrylic polymer

Bột khoáng

Phụ gia hoạt tính

Khuyến cáo an toàn

Khuấy đều trước khi sử dụng

Thi công đúng theo chỉ dẫn được trình bày trên nhãn hộp

Rửa dụng cụ ngay lập tức sau khi sử dụng với nước

Khuyến cáo không sử dụng Flex shield color nơi đọng nước hoặc bị ngập trong nước liên tục

Bảo quản

Sản phẩm được lưu trữ ở nơi khô ráo và thoáng mát.Hạn chế tiếp xúc trực tiếp với ánh sáng mặt trời

Khi sử dụng xong phải đậy nắp kín

Hướng dẫn thi công

Chuẩn bị bề mặt

Bề mặt tấm xi măng cemboard phải làm vệ sinh sạch và cứng chắc, không bụi và các chất rơi rớt. Vữa xi măng, dầu, mỡ, chất tách khuôn hoặc bất kỳ chất gây ô nhiễm ngoại lai mà có thể cản trở bám dính phải được loại bỏ khỏi bề mặt cemboard bằng cách sử dụng bàn chải sắt, bàn cào sắt hoặc các phương tiện khác. Nơi rêu, tảo hoặc nấm mốc có thể sinh ra, tiến hành xử lý bằng hóa chất thích hợp sau quá trình làm sạch ban đầu sau đó rửa sạch lại

Làm phẳng khu vực lồi lõm với vữa không co ngót thích hợp trước khi sử dụng Flex shield

Thi công

Khuấy đều sản phẩm trước khi thi công

Flex shield color có thể thi công bằng ru lô, cọ hoặc thiết bị phun. Và tiến hành thi công từ 2-3 lớp và đảm bảo sao cho lớp trước phải khô rồi mới tiến hành thi công lớp tiếp theo(thời gian để khô một lớp cần tối thiểu 2-3h).Còn đối với những khu vực có vết nứt lớn đã được lấp đầy hoặc thường xuyên chịu tác động mạnh bởi ngoại lực thì nên được gia cố bởi một lớp lưới gia cường sau khi thi công lớp thứ nhất còn ướt rồi mới tiến hành thi công lớp tiếp theo

Bảng màu

Coi thêm ở : Chống Thấm Cho Vách, Sàn Tấm Cemboard Với Flex shield color

[construction-materials-en-blog]

Vapor barrier

6 mil Polyethylene plastic sheet as vapour barrier between insulation and gypsum board Glass wool pipe insulation covering a steel pipe as it penetrates a mock-up concrete slab whose opening will be firestopped. In this manner, the vapor barrier (in this case made of foil scrim kraft paper, called ASJ, All Service Jacket, aluminium on the inside, white paper on the outside) can remain intact as it penetrates the fire barrier. A vapor barrier (or vapour barrier) is any material used for damp proofing, typically a plastic or foil sheet, that resists diffusion of moisture through wall, ceiling and floor assemblies of buildings to prevent interstitial condensation and of packaging. Technically, many of these materials are only vapor retarders as they have varying degrees of permeability. Materials have a moisture vapor transmission rate that is established by standard test methods. One common set of units is g/m²·day or g/100in²·day. Permeability can be reported in perms, a measure of the rate of transfer of water vapor through a material (1.0 US perm = 1.0 grain/square-foot·hour·inch of mercury ≈ 57 SI perm = 57 ng/s·m2·Pa). American building codes have classified vapor retarders as having a water vapor permeance of 1 perm or less when tested in accordance with the ASTM E96 desiccant, or dry cup method. Vapor retarding materials are generally categorized as: Impermeable (≤1 US perm, or ≤57 SI perm) (Materials such as asphalt-backed kraft paper, vapor-retarding paint, oil-based paints, vinyl wall coverings, extruded polystyrene, plywood, OSB), Semi-permeable (1-10 US perm, or 57-570 SI perm) (Materials such as unfaced expanded polystyrene, fiberfaced isocyanurate, heavy asphalt-impregnated building papers, some latex-based paints), Permeable (>10 US perm, or >570 SI perm) (Materials such as unpainted gypsum board and plaster, unfaced fiber glass insulation, cellulose insulation, unpainted stucco, cement sheathings, spunbonded polyolefin or some polymer-based exterior air barrier films). ^ Smart Vapor Retarders. Certain Teed Corporation. 2006. p. 2.  More details Android, Windows

#Construction Materials

[fitnessxpertshop-blog]

RANDY SUN Men's Nonslip Sock Suitable for Motorcycling Fishing and Hunting

New Post has been published on https://www.fitnessxpertshop.com/product/randy-sun-mens-nonslip-sock-suitable-for-motorcycling-fishing-and-hunting

RANDY SUN Men's Nonslip Sock Suitable for Motorcycling Fishing and Hunting

RANDY SUN Men’s and Women’s Mid-Calf and Ankle Waterproof & Highly Breathable Socks Athletic Socks.

The waterproof socks can make your feet enjoy freedom of movement all the time, and it is not only wind proof and water proof but also highly moisture and perspiration permeable. Its special three layer design ingeniously solved the contradiction between water proofing property and air permeability.

The strong adhesive three layers structure can prevent the external water molecules into socks, meanwhile spread feet sweat during the movement quickly to the outside of the socks. Even in mountain climbing, hiking, running, outdoor cycling, water sports, snow sports, adventure, hunting, fishing, outdoor gardening and so on all kinds of bad environment, it could still keep your feet dry and comfortable.

Our waterproof and breathable socks is the first choice for outdoor enthusiasts, as well as military personnel, postal personnel, even some special outdoor operation of protective equipment. Its appearance is exactly the same as ordinary socks. 100% seamless, comfortable, dry and warm, so it also can be used for daily wearing, change daily beriberi due to the foot sweat and cold fed caused by bad warmth retention property footwear and so on all kinds of discomfort.

Function layer property index: Waterproof:7,000MM water-columm BS3424 Part 26:1990 Breathable:12,000g/M².24 hours ASTM E96 BW:1995

Size: the Small size socks fit US men 6.5-8.5 and women 7.5-10; the Medium size socks fit US men 9-11.5 and women 10.5-12.5; the Large size socks fit US men 12-14.5 and women 13-14.5. Weight: the Mid-Calf socks(Size M) is 3.42 ounces one pair and the Ankle socks(Size M) is 2.47 ounces one pair.

Welcome to RANDY SUN and we would do our best to help you find what you need.

Three sizes (unisex): Small (6.5-10),Medium (9-12.5),Large (12-14.5);See the images for more size information(USA Men,USA Women) Daily Wear,foot care,especially suitable for outdoor sports and activities of various kind of harsh environments 100% waterproof and breathable,moisture and perspiration absorption,anti bacterial function to reduce bad odour Ultra-light cushion sole provides comfort and great fit,suitable for biking,walking and running during warmer seasons when there is a need to keep dry feet Hand wash under normal temperature,water temperature should be below 40 degree centigrade if machine wash, do not iron, dry clean or tumble dry but hang to dry after spin-dry in ventilated place

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Chums Original Cotton Standard End Eyewear Retainer, Black

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[saichenginstrument]

ASTM E96 standard and Test Method

Water Vapor Transmission, Water Vapor Permeance, Water Vapor Permeability

Water vapor transmission (WVT) is determined by dividing the rate of weight change by the area of the test specimen. Water vapor permeance is in general the degree to which a material admits water vapor. Water vapor permeability is related with the thickness of the material.

Calculation of Water Vapor Transmission, Water Vapor Permeance, Water Vapor Permeability

The permeance and permeability are calculated from the WVT. The permeance is calculated by dividing the WVT by the vapor pressure across the material under test. The permeability is calculated by multiplying the permeance by the thickness of the material.

ASTM E96 standard and Test Method

ASTM E96 standard is used to test paper, plastic films, other sheet materials, fiber-boards, gypsum and plaster products, wood products, and plastics. ASTM E96 standard introduces two basic methods: the desiccant method and the water method.

ASTM E96 Desiccant Method

The desiccant method: the test dish contains a desiccant. Leave enough space so that the shaking of the dish to mix the desiccant, which have to be done at each weighing. The test specimen is sealed to the open mouth of the dish. The rate of water vapor movement is determined by periodic weighing of the test dish.

ASTM E96 Water Method

The water method: the dish contains distilled water. Water vapor permeates through specimen into the controlled atmosphere. Through the periodic weighing of the test dish, the values can be obtained.

ASTM E96 Test Method Attention

Under different test conditions, the valued obtained may not be equivalent. As this reason, select the test conditions which are the closest with the conditions of use.

Saicheng’ WPT-301B Water Vapor Permeability Tester which adopts gravimetric method complies with ASTM E96 standard.

#water vapor transmission #water vapor permeance #water vapor permeability #ASTM E96 #ASTM E96 test method #desiccant method #water method #water vapor permeability tester #WPT-301B #WPT-301B water vapor permeability tester

[saichenginstrument]

The difference of ASTM E96 standard and ASTM D1653 standard

Water Vapor Transmission, Water Vapor Permeance, Water Vapor Permeability

Water vapor transmission (WVT) is determined by dividing the rate of weight change by the area of the test specimen. Water vapor permeance is in general the degree to which a material admits water vapor. Water vapor permeability is related with the thickness of the material.

Calculation of Water Vapor Transmission, Water Vapor Permeance, Water Vapor Permeability

The permeance and permeability are calculated from the WVT. The permeance is calculated by dividing the WVT by the vapor pressure across the material under test. The permeability is calculated by multiplying the permeance by the thickness of the material.

ASTM D1653 standard and Test Method

ASTM D1653 standard determines the water vapor transmission rate of films of paint,lacquer,vanish, and other organic coatings. The films may be free films or be applied to porous substrates. Under ASTM D1653 standard, there are two test methods: dry cup method and wet cup method.

ASTM E96 standard and Test Method

ASTM E96 standard is used to test paper, plastic films, other sheet materials, fiber-boards, gypsum and plaster products, wood products, and plastics. ASTM E96 standard introduces two basic methods: the desiccant method and the water method.

The difference of ASTM E96 standard and ASTM D1653 standard

The testing scope of ASTM E96 standard is more wider, which can evaluate many materials, including coatings which is mainly tested under ASTM D1653 standard.

ASTM D1653 includes directions for preparation of a free film, whereas ASTM E96 does not.

ASTM E96 requires that permeance values exceeding 2 perm are corrected for resistance due to still air and specimen surface. ASTM D1653 does not specify the correction.

Saicheng’ WPT-301B Water Vapor Permeability Tester which adopts gravimetric method complies with ASTM E96 standard and ASTM D1653 standard.

#water vapor transmission #water vapor permeance #water vapor permeability #ASTM D1653 standard #ASTM E96 standard #test method #water vapor permeability tester #WPT-301B water vapor permeability tester

[saichenginstrument]

ASTM D1653 Standard and Test Method

Water Vapor Transmission, Water Vapor Permeance, Water Vapor Permeability

Water vapor transmission (WVT) is determined by dividing the rate of weight change by the area of the test specimen. Water vapor permeance is in general the degree to which a material admits water vapor. Water vapor permeability is related with the thickness of the material.

Calculation of Water Vapor Transmission, Water Vapor Permeance, Water Vapor Permeability

The permeance and permeability are calculated from the WVT. The permeance is calculated by dividing the WVT by the vapor pressure across the material under test. The permeability is calculated by multiplying the permeance by the thickness of the material.

ASTM D1653 standard and Test Method

ASTM D1653 standard determines the water vapor transmission rate of films of paint,lacquer,vanish, and other organic coatings. The films may be free films or be applied to porous substrates. Under ASTM D1653 standard, there are two test methods: dry cup method and wet cup method.

ASTM D1653 Wet Cup Method

By sealing a film of the test material to the top of a vessel that is filled with water or desiccant, WVT is determined. It is called wet cup method when the vessel is filled with water. The test determines how much water vapor is lost through the film. The dish loses water over the course of the test so that the plot tends downward. The wet cup method is the preferred one for obtaining values that is related to conditions of use where is high relative humid.

ASTM D1653 Dry Cup Method

When the vessel is completed with desiccant, it is called the dry cup method. Through the test method, it is obviously known how much water vapor the desiccant attracts through the film. Meanwhile, the plot points upward as the dish gets water over the course of the test. The dry cup method is the preferred one for obtaining values that is related with conventional dwellings where is lower relative humid.

Rules of ASTM D1653 Test Method

At the beginning of test, the dish may gains or loses weight quickly, and then goes into a constant rate of weight change. Certainly, the process depends on the material being tested.

Attention: By the wet cup method, the values obtained are higher than ones by the dry cup method under the same conditions of air temperature and humidity.

Saicheng’ WPT-301B Water Vapor Permeability Tester which adopts gravimetric method complies with ASTM E96 standard and ASTM D1653 standard.

#water vapor transmission #water vapor permeance #water vapor permeability #ASTM D1653 #standard #test method #wet cup method #dry cup method #ASTM D1653 wet cup method #ASTM D1653 dry cup method #gravimetric method #water vapor permeability tester #WPT-301B #Saicheng