Mf889 Silicone Weatherproofing Sealant

Basic Info.

Model NO.	MF889
Bonding Material	Glass
Transport Package	Box
Specification	300ml/592ml
Trademark	SILANDE
Origin	China
HS Code	3506919090
Production Capacity	8000000PC/Year

Product Description

MF889 SILICONE WEATHERPROOFING SEALANTDESCRIPTION IAPPLICATIONSSILANDE MF889 Silicone Weatherproofing Sealant, a one-part, RTV neutral-cure, architectural grade sealant, is a specified, premium performance weather sealing product specifically designed for general glazing and weather sealing in curtain wall and building facades. TYPICAL PERFORMANCEExcellent adhesion to a wide range of substrates including coated glass, galvanized steel, masonry, anodized and p lyester paint coated aluminium and stainless steel.and ther porous and non- porous substrates.Ideal for expansion, connection, perimeter and other movement jointsSuitable for use on extension/compression movement capability of up to ±35% of the original joint width.Excellent temperature stability: - 60°C to 180°C.High level of mechanical properties.High elasticity and high modulus.Resistant to ozone.

Extrusion Property, ml/min	≥ 80	360	GB/T 13477.3
Application Time, min	-	30
Tack-free Time, h	≤3	2.5	GB/T 13477.5
Curing Time, d		7-14
Range of Application Temperature,ºC	--	5-40	--
Test Conditions: 28d placed at T (23ºC,(50±5)% R.H.
Hardness, Shore A	20-60	45	GB/T 531.1
Movement Capability, %	35	35	GB/T 22083
Range of Temperature Resistance,ºC		-60 - 180
Modulus at 100% Elongation, MPa		0.5	GB/T13477.8
Elongation at Break, %		350	GB/T13477.8
Tensile Strength, Mpa		1.10	GB/T13477.8

APPLICABLE STANDARDSASTM C920, Type S, Grade NS, Class 35, NT, G,AChina Specification:JC/T 882 25HMGB/T 14683 G,F 25HM GB/T 22083 G, G 35HMISO 11600F,G 25HMPREPARATION INSTRUCTIONFor good adhesion, a clean, dry and rease free surface is necessary. All contaminants, impurities r other adhesion inhibitor (such as moisture/frost, oils, old sealant, soaps and other surface treatment, etc.) must be removed from the surfaces to which the sealant is intended t adhere. Clean by using a two-rag wipe technique - wet one rag with s lvent and wipe the surface with it, then use the second rag to wipe the wet solvent from the Surace before it evaporates. In all cases where used, solvent should be wiped dry with a clean , white cloth or other lint-free wiping materials.For cleaning, a solvent-dampened clean rag usually produces the desired result. lsopropyl Alcohol (IPA) is comm nly used solvent and has proven useful for most substrates.Cleaning of surface sh uld be done within 1 t 2 hours of when the sealant is to be applied.The use of masking tape is recommended where appropriate to ensure a neat job and toprotect adjoining surfaces from over­ application of sealant. Masking tape should be removed immediately after tooling the sealant and before the sealant begins to skin over(tooling time).Extrude with manual and pneumatic sealant gun, cut tip to desired bead size, punctureseal in nozzle and remove metal seal on end of cartridge before placing cartridge incaulking gun. Make bond before the pro uct skins. Adhesive sealant must be used within 30 mins after inner seal is punctured. Good ventilation is necessary in the process of installation and curing. To ensure the best adhesive properties, do a test on adhesion before using in batches and peeling adhesion tests at regular intervals are also required while carrying out installation.APPLICATION METHODSInstall backing materials jointfillers, setting blocks, spacershims and tapes. Mask areas adjacent to joints to ensure neat sealant lines. Primer is generally not required on non-porous surfaces, but maybe necessary for optimal sealant of certain porous surfaces. A test placement is always recommended. Apply MF889 Silicone Weatherproofing Sealant in a continuous operation using a positive pressure. (The sealant can be applied using manytypes of air-operated guns andmost types of bulk dispensing equipment. Betore a skin forms (typically within 15 minutes), tool the sealant with light pressure to spread the sealant against backing matrial and the joint surfaces. Remove masking tapeas soon as the bead is tooled.PACKAGECartridge: 300 ml I 25 pc/cartonSausage: 592 ml I 20 pc/carton