| | DescriptionZJ-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/T11944b. Excellent adhesion to all kinds of glassc. Neutral cured, no corrosion, non poisonousd. Excellent structural strength with temperature durable performance at 50°C~+150°Ce. Excellent weatherproof and UV, high temperature and humidity stability.No limitation for batch time match Where to use1. 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 buildings2) 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°C) | minutes | 20-40 | | | Tack free time (humidity 50±5%,temperature 23±2°C) | minutes | 80-100 | | | Corrosive | | | no | | | As Cured 7 Days at (humidity 50±5%,temperature 23±2°C) | | Ultimate tensile strength | MPa | 0.85 | GB/T113477 | | Ultimate elongation | | % | 120 | GB/T113477 | | Hardness (Shore A) | | | 42 | GB/T1531 | | Service temperature range | °C | 50°C~+150°C ( -58~+302F) | |
Please contact zhijiang before make specification.GB/T1___Chinese national standard ApplicationZJ-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 methodThe 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. Surface cleanCleaning all grease, dirty, water, klunky sealant from surface, accessories and protective coatings and any pollutant left inside joints and sunken parts.Surface of Metal, glass and plastic will be cleaned by “two-cloth" cleaning method. No matter which way, use a piece of oil-free and lint-free cloth to wipe and another piece to get rid of remnant solvent. Washing powder or soap water is not fit.PrimingIt's commonly not necessary for priming on using zhijiang silicone sealant. If recommending primer after adhesion tests, pourzhijiang primer to a clean, dry, lint-free cloth and gently wipe surface till a thin film formed. Later application.MaskingMasking tape should be used to keep excess sealant from contacting adjacent areas where it is not intended, to ensure an aesthetically pleasing job. Tool the sealant with light pressure before a skin begins to form (typically 10 to 20 minutes). Remove the masking tape before the sealant skins over.Clean dispensing equipmentDuring shutdown, it's recommended that the dispensing and mixing lines be purged with un-catalyzed base or solvent. The cured sealant inside the dispenser should be cleaned with solvent.MaintenanceNo need to maintenance. Please change broken part or ZJ-997 if sealant failed. ZJ-997 could be adhered to the cured ZJ-997 after suitable surface clean. Construction Project Technical ServiceIt's needed to take the design, choose materials, operation into consideration for the structural joint sealing. The technical communication between suppliers and applicants are necessary for the present situation: varied sealant types, daily changing materials and the compatibilities between surface treatment and materials. Hangzhou Zhijiang Silicone Chemicals Co., Ltd. Gives construction project technical services as follows:Adhesion TestingZHIJIANG Silicone will evaluate tests about the adhesion of our products to job site or representative job site materials in standard laboratory. Results of the adhesion testing, product recommendations and surface preparation will be forwarded in writing.Compatibility TestingIncompatibility of glazing materials can lead to sealant discoloration and/or loss of adhesion. To help protect against these problems and to ensure compatibility, ZHIJIANG will also test and provide information on the compatibility of accessory materials (gaskets, spacers, etc.) and other ZHIJIANG Silicone sealants.Stain TestingBecause of the staining problems that may occur with porous substrates, ZHIJIANG is willing to run laboratory tests and provide information to you on the possibility of staining occurring with the construction materials being used. Handling PrecautionsProduct 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 lifeIt is stored on airtight container under 30°C and 12 months of shelf life from the date of production.. PackingZJ-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 LimitationsZJ-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. Health MaterialZhijiang has expert groups for product service, health safety, environmental protection and legal things around china. If need specific data, contact local representatives. | |
