14 Years Manufacturer SV-888 Weatherproof Silicone Sealant for St. Petersburg Factories

14 Years Manufacturer SV-888 Weatherproof Silicone Sealant for St. Petersburg Factories
  • 14 Years Manufacturer SV-888 Weatherproof Silicone Sealant for St. Petersburg Factories14 Years Manufacturer SV-888 Weatherproof Silicone Sealant for St. Petersburg Factories
  • 14 Years Manufacturer SV-888 Weatherproof Silicone Sealant for St. Petersburg Factories14 Years Manufacturer SV-888 Weatherproof Silicone Sealant for St. Petersburg Factories
  • 14 Years Manufacturer SV-888 Weatherproof Silicone Sealant for St. Petersburg Factories14 Years Manufacturer SV-888 Weatherproof Silicone Sealant for St. Petersburg Factories

Short Description:

Description SV-888 silicone weatherproof sealant is one component, neutral cure silicone sealant, designed for glass curtain wall, aluminum curtain wall and building exterior design, has excellent weathering properties, it can form durable and most building materials, waterproof and flexible interface.   Key Features 1. 100% silicone 2. Medium modulus (25% movement capability) 3. UV resistance & weatherproof 4. Primerless adhesion to most building materials   Basic Application 1.All ...


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We always continually provide you with the most conscientious customer service, and the widest variety of designs and styles with finest materials. These efforts include the availability of customized designs with speed and dispatch for 14 Years Manufacturer SV-888 Weatherproof Silicone Sealant for St. Petersburg Factories, We are sincerely looking forward to establishing good cooperative relationships with customers from at home and abroad for creating a bright future together.


Description

SV-888 silicone weatherproof sealant is one component, neutral cure silicone sealant, designed for glass curtain wall, aluminum curtain wall and building exterior design, has excellent weathering properties, it can form durable and most building materials, waterproof and flexible interface.

 

Key Features

1. 100% silicone

2. Medium modulus (25% movement capability)

3. UV resistance & weatherproof

4. Primerless adhesion to most building materials

 

Basic Application

1.All kinds of glass curtain wall weatherproof seal

2.For metal (aluminum) curtain wall, enamel curtain wall weatherproof seal

3.Joint sealing of concrete and metal

4.Roof joint seal

 

Technical data sheet

Test standard Test project Unit value
Before curing——25℃,50%R.H.
GB13477 Flow, sagging or vertical flow mm 0
GB13477 Operating time min 10
GB13477 surface drying time(25℃,50%R.H.) min 20
  Deep curing mm/day 1-2
Sealant curing speed and operating time will have different with different temperatures and temperature, high temperature and high humidity can make sealant curing speed faster, rather low temperature and low humidity are slower.21 days after curing——25℃,50%R.H.
GB13477 Durometer Hardness Shore A 28
GB13477 The ultimate tensile strength Mpa 0.65
  Temperature stability -50~+150
GB13477 Movement capability % 25

 

Certification

GB/T 22083-G-35;ASTM  C920

 

Color

Black, white, grey

 

Package

300ml in cartridge * 24 per box, 590ml in sausage *20 per box

 

Shelf life

12 months

 

Note

If you want the TDS or MSDS or other details, please contact with our sales person.

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    Short tutorial about using UV curable solder mask.
    It is an update to my original PCB making tutorial: https://www.youtube.com/watch?v=p2kFazl-aEE
    See explanation below:

    In this video I used standard transparency film printed with laser printer. Usually I use optical film because of greater contrast, but here I wanted to present a method doable by everybody.

    The solder mask paint I used can be bought from ebay:

    https://www.ebay.com/itm/PCB-UV-Curable-Solder-Mask-Repairing-Paint-Green-100g-/200622507317?pt=LH_DefaultDomain_0&hash=item2eb6088535

    It is pretty cheap, and enough for a lifetime for a hobbyist. It has very good scratch resistance, resistant to chemicals, heat resistance even to 320*C soldering iron, and gives good surface finish used with cellophane.

    The key for a good, well cured coating is to obtain an even and thin film on the PCB.
    The steps are the followings:
    - Prepare the PCB – it should be cleaned thoroughly after etching.
    - Prepare the film: It is crucial to have a good contrast otherwise either you need to lower the exposure and it will cure partially and will not adhere well to the board, or with a longer exposure it can cure on the pads also and you can not wash it down.
    For a good contrast with laser transparency – print one normal and one mirrored image, then put them together with the toner part facing each other to prevent shadow ghosting.
    - Stir well the paint (it is very viscous) and put a droplet in the middle of the PCB board. You can stretch it a bit but do not extend it on the board (it should be done using the cellophane to prevent air bubles)
    - Put the cellophane over the board with the paint droplet in the middle, and stretch the paint using a credit card or similar. Don’t press it too hard otherwise the cellophane will stretch and will form wrinkles.
    - Stretch the paint evenly on the surface of the board trying to achieve the thinnest coating possible.
    - Put the film over the cellophane, align it to the PCB’s artwork, cover with a sheet of glass and press it some more to make the whole ting more even.
    - Expose under UV light ( I used 12W on 20cm for 10min 30sec. )
    - Peel down carefully the cellophane and wipe down the uncured paint from the pads.
    - Expose for further 10min under UV light to harden the paint further (you can use the sun light also for this)
    - Proceed with the other side for double side boards.
    - Enjoy the result.

    With a good film I obtained 50 micron details also (square pins for a 0201 component)

    Details about the exposure device:

    https://nagyizeeuv.blogspot.ro/

    Good luck :-)

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