double component Silicone Sealant for Insulating

Description ZJ-997 Silicone insulating glass sealant is a two-parts, neutral curing silicone sealant specifically developed for the manufacture of high performance insulated glass with good features as follows: a. Insulating glass manufactured by ZJ-997 conforms to GB/T11944 b. Excellent adhesion to all kinds of glass c. Neutral cured, no corrosion, non poisonous d. Excellent structural strength with temperature durable performance at 50 +150 e. Excellent weatherproof and UV, high temperature and humidity stability. No limitation for batch time match Where to use 1. It is formulated for making the secondary seal in a dual sealed insulating glass unit. 2. The high performance features incorporated into this product make it especially suitable for the following applications: 1) Insulated glass unit for commercial buildings 2) Insulated glass unit incorporating specialty glass types, or with free edges (solar architecture). 3) Insulated glass unit where high heat or humidity maybe encountered. Typical properties (for reference) Item Base Curing Agent Mixed Base to Curing Agent by Volume Test method Colors White Black Black, no flow paste Specific gravity 1.38 1.02 1.33 Shelf life, month 12 12 Mixed at 12:1 Base to Curing Agent by weight (or 9:1 by volume) Working Time((humidity 50±5%,temperature 23±2) minutes 20-40 Tack free time (humidity 50±5%,temperature 23±2) minutes 80-100 Corrosive no As Cured 7 Days at (humidity 50±5%,temperature 23±2) Ultimate tensile strength MPa 0.85 GB/T113477 Ultimate elongation % 120 GB/T113477 Hardness (Shore A) 42 GB/T1531 Service temperature range 50 +150 ( -58 +302F) Please contact zhijiang before make specification. GB/T1___Chinese national standard Application ZJ-997 structural sealant has excellent unprimed adhesion to most coated or not coated glass. It's compatible to neutral serial zhijiang products like ZJ-2000, ZJ-888, ZJ-222, ZJ-225 or ZJ-8000. Application method The base and curing agents should be mixed by airless mixing system for better physical performance. ZJ-997 is fit for general two-part silicone sealant dispenser. It will have no good effects if using manual mixing or using hand for air entering into sealant and later changing the performance of sealant. Lot matching of base and curing agent is not required for ZJ-997. ZJ-997 should be stirred before use to prevent possible settling in shipment. Because of its reactivity with atmospheric moisture, curing agent should not be exposed to air for prolonged period. The 12:1 base to curing agent mixing ratio by weight could be adjusted by user from 10:1 14:1(mixing ratio by volume from 7.5 10.5:1) for suitable curing time. No any significant changes will occur over this range. The increase or decrease of air moisture will affect the snap time. Please contact zhijiang or dispenser manufacturer for best mixing ratio. To obtain optimum adhesion, joints should be tooled immediately after sealant application to ensure complete substrate contact. During shutdown, it's recommended that the dispensing and mixing lines be purged with un-catalyzed base. This minimizes sealant buildup. Questions about ZJ-997 could be answered by calling Zhijiang local agents or representatives. Our laboratory and technical staffs are available for assistance. Handling Precautions Product safety information is not included in this document. Before handling, read product and material safety data sheets and container labels for safety. Product and material safety data sheet is available from zhijiang local representative or distributor. Storage and Shelf life It is stored on airtight container under 30 and 12 months of shelf life from the date of production.. Packing ZJ-997 base and curing agents are available in separate packaging or match packaging (12:1 by weight). The base will be used for purge in dispenser shutdown. So base is available in 245 Kg ferrous drum. Curing agent is available in 19 Kg plastic pail. Use Limitations ZJ-997 could not be used for structural curtain wall glazing. Adhesion and compatibility tests among materials; ZJ-997 should not contact with any acetic sealant. Not recommend for drug use before tests.