Audited Supplier
Shanghai Siway Building Materials Co., Litimed., our comapany is a professional silicone sealant manufacturer. We have a varity of silicone sealants, main products are Structural silicone sealant, Neutral silicone sealant, weatherproof silicone sealant, Stone silicone sealant and others. The products own a good repution in home and abroad, especially in Europe, North America, the Middle East and other regions.We are the large group of sealant production, rely on the raw material suppling base to produce the professional sealants. More production lines and Quanlity stabel. The capacity of production is 10 million tons per year of silicone sealants.Other different sealants also very large quantity,can satisfy big projects request.
Sikaflex®-252
Sikaflex®-252 is an elastic 1-component polyurethane adhesive especially designed for bonding large components in vehicle assembly. It is suitable for bonding coated metal, GRP, ceramic materials and plastics.
- Bonds well to a wide variety of substrates
- Capable of withstanding high dynamic stresses
- Good gap-filling properties
PRODUCT BENEFITS
- Bonds well to a wide variety of substrates
- Capable of withstanding high dynamic stresses
- Good gap-filling properties
- Can be painted
- Vibration-damping
- Electrically non-conductive
Usage
Sikaflex®-252 is suitable for assemblies that are subject to dynamic stresses. Suitable substrate materials are timber, metals, particularly aluminum (including anodized components), sheet steel (including phosphated, chromated and galvanized components), metal primers and paint coatings (2-component systems), ceramic materials and plastics. Seek manufacturer's advice before using on plastics that are prone to stress cracking. This product is suitable for professional experienced users only. Tests with actual substrates and conditions have to be performed to ensure adhesion and material compatibility.Packaging
Cartridge | 300 ml |
| Unipack | 600 ml |
Product Details
| Chemical base | 1-component polyurethane
| |
| Colour (CQP001-1) | Black, white
| |
| Cure mechanism | Moisture-curing | |
| Density (uncured) | depending on colour
| 1.2 kg/l
|
| Non-sag properties | Good | |
| Application temperature | ambient | 10 ─ 35 °C |
| Skin time (CQP019-1) | 40 minutes A | |
| Open time (CQP526-1) | 35 minutes A
| |
| Curing speed (CQP049-1) | (see diagram 1)
| |
| Shore A hardness (CQP023-1 / ISO 48-4) | 50 | |
| Tensile strength (CQP036-1 / ISO 527) | 3 MPa | |
| Elongation at break (CQP036-1 / ISO 527) | 400 % | |
| Tear propagation resistance (CQP045-1 / ISO 34) | 7 N/mm
| |
| Tensile lap-shear strength (CQP046-1 / ISO 4587) | 2.5 MPa | |
| Service temperature (CQP509-1 / CQP513-1) |
4 hour 1 hour
| -40 ─ 90 °C 130 °C 150 °C
|
| Shelf life (CQP016-1) | 12 months B
|
CQP = Corporate Quality Procedure | A) 23 °C / 50 % r. h. | B) storage below 25 °C |
Surface preparation
Surfaces must be clean, dry and free from grease, oil, dust and contaminants.
The surface treatment depends on the specific nature of the substrates and is crucial for a long lasting bond. Suggestions for surface preparation may be found in the current edition of the appropriate Sika® Pre-treatment Chart. Consider that these suggestions are based on experience and must be verified by tests on original substrates.
Application
Sikaflex®-252 can be processed between 10 °C and 35 °C (climate and product) but changes in reactivity and application properties have to be considered. The optimum temperature for substrate and sealant is between 15 °C and 25 °C.
Consider that the viscosity will increase at low temperature. For easy application, condition the adhesive at ambient temperature prior to use. To ensure a uniform thickness of the bondline it is recommend to apply the adhesive in form of a triangular bead.
Sikaflex®-252 can be processed with manual, pneumatic or electric driven piston guns as well as pump equipment. The open time is significantly shorter in hot and humid climates. The parts must always be installed within the open time. Never join bonding parts if the adhesive has built a skin.
Tooling and finishing
Tooling and finishing must be carried out within the skin time of the product. It is recommended to use Sika® Tooling Agent N. Other finishing agents must be tested for suitability and compatibility prior to use.
Removal
Uncured Sikaflex®-252 can be removed from tools and equipment with Sika® Remover-208 or another suitable solvent. Once cured, the material can only be removed mechanically. Hands and exposed skin have to be washed immediately using hand wipes such as Sika® Cleaner-350H or a suitable industrial hand cleaner and water.
Do not use solvents on skin.
Manufacturer
Shanghai Siway Curtain Material Co.Ltd
Other Products
FAQ
Q: How can i get the price?
A: We usually quote within 24 hours after we get your inquiry(Except weekend and holidays). If you are very urgent to get the price, please email us or contact us in other ways so that we can offer you a quote.
Q: Can I buy samples placing orders?
A: Yes.Please feel free to contact us. The sample is free, you only need to pay the shipping cost. When you place an order again, we will refund the shipping cost of the sample order for you.
Q: Can I buy samples placing orders?
A: Yes.Please feel free to contact us. The sample is free, you only need to pay the shipping cost. When you place an order again, we will refund the shipping cost of the sample order for you.
Q: What is your lead time?
A: It depends on the order quantity and the season you place the order. Usually we can ship within 7-15 days for small quantity, and about 30 days for large quantity.
Q: You a manufacturer or trader? Do you provide OEM/ODM services?
A: We are a manufacturer of sealants and water-based paints. We have three production bases in China, and have fully automatic production lines, which can meet different order requirements. We provide OEM and ODM services, welcome to contact us.
Q: What is your payment term?
A: T/T, Western Union, L/C and Paypal. This is negotiable.
Q: What is the shipping method?
A: It could be shipped by sea, by air or by express(EMS, UPS, DHL, TNT, FEDEX and ect).Please confirm with us before placing orders.
