Product Introduction:
The 770 processing agent primer is a mixed solvent that rapidly evaporates at room temperature. Used for surface treatment on silicone rubber or other elastic materials, in combination with cyanoacrylate adhesive. The properties of the material cured with cyanoacrylate adhesive are the same as those of the adhesive cured in TDS, unless otherwise specified.
Typical use:
Specially designed for silicone rubber and some thermoplastic elastomers, they are usually difficult to bond. However, after being treated with 770 polyolefin primer, these materials can be bonded with melamine acrylate adhesive.
770 treatment agent primer is only suitable for surface treatment of difficult to stick materials.
Liquid performance:
| Project |
Typical values |
| Chemical type |
Fatty amine solution |
| Solvent |
Heptane* |
| Appearance |
Colorless |
| Specific gravity @ 25 ℃ |
0.8 |
| Viscosity@20℃,mpa.s |
1.25 |
| Flash point, (COC), ℃ |
+1 |
| Drying time @ 20 ℃, seconds |
30 |
| Lifespan on parts, hours |
8 |
| Fluorescence performance under external light source(365mm) |
have |
| *Heptane is an environmentally friendly solvent. Heptane has no potential destructive effect on the ozone layer and follows the German WGK, category 1. |
Typical features:
After treatment with activator 770, the fixation time and curing speed of the adhesive depend on the type of adhesive and substrate used.
The effect of primer on the curing speed of cyanoacrylate adhesive
This primer can serve as an activator and promoter for cyanoacrylate adhesives. Most of the bases treated with this primer have a fixation time of less than 5 seconds, but it takes 24 hours at room temperature (220C) to achieve maximum adhesive strength.
The influence of primer on the curing performance of cyanoacrylate adhesive
Products 401-A, 401-A2, and 899 are adhesives based on ethyl, methyl, and B methoxyethyl esters, respectively. Other liquid adhesives based on these esters have similar properties to the above three products. High strength, not recommended for use with gel products.
Shear strength, ASTMD1002，DIN EN1465，N/mm2
Polypropylene samples treated with primer 770 treatment agent.
Test after curing for 24 hours at 22 ℃ and relative humidity of 55%.
|
Typical |
Scope |
| Penetration gap 0.05mm |
product 401 |
3-10 |
| product 496 |
2-7 |
| product 460 |
1-4 |
| Penetrating gap 0.125mm |
product 401 |
3-10 |
| product 496 |
0 |
| product 460 |
1-4 |
| Penetrating gap 0.5mm |
product 401 |
3-10 |
High density rubber samples treated with primer 770 treatment agent
| Sandblasting low carbon steel (excluding primer)/ |
product 401 |
4-10 |
| Processed with primer 770 treatment agent Penetration gap 0.05mm |
product 496 |
5-15 |
Thermoplastic elastomer (Santoprene *)
Treat with primer 770 treatment agent
| Penetration gap 0.05mm |
Product 401 |
2-6 |
Polytetrafluoroethylene (Teflon * * and Fluont+) treated with primer 770 treatment agent
| Penetration gap 0.05mm |
Product 401 |
1-6 |
Peel strength
Product 770 processing agent polyolefin primer is not suitable for bonding to assembly parts that require high peel strength.
Typical environmental resistance performance:
The adhesive substrate is treated with 770 treatment agent polyolefin primer and bonded with cyanoacrylate adhesive.
Testing method: Shear strength, ASTMD1002
Curing method: cure for 24 hours
Thermal intensity
Polypropylene bonding is tested for shear strength at different temperatures, N/mm
Sandblasting low-carbon steel bonded with polypropylene.
Shear strength, N/mm
Thermal aging test
Measurement on silicone rubber samples treated with 770 treatment agent under primer
Resistant to chemical media and solvents
Treat the rubber sample wiped with isopropanol with primer 770.
100 hours, 500 hours, 1000 hours
Retention rate of tensile shear strength under aging conditions of 40 ℃ and 95% relative humidity
100，100，100
Please refer to the relevant adhesives in TDS for the effects of other solvents on the bonding system.
Precautions for operation:
The activator should be operated according to the operation method of highly flammable materials, and please follow the local regulations on the use of flammable materials during operation.
The solvents contained in the product may have an impact on certain plastics or coatings, so it is recommended that users confirm the compatibility of this product with the surface of the adhesive material before use.
Usage guide:
The primer can be applied by spraying, brushing, or dipping. Dry at room temperature. Avoid excessive primer. The primer applied can be detected using a UV lamp (365nm). If other substrates need to be bonded to polyolefin substrates, simply use the primer on the polyolefin substrate. This product should be used in an environment with good ventilation conditions. Do not use open flames or other sources of ignition on the construction site.
Storage conditions:
Unless otherwise indicated on the label, the ideal storage conditions for this product are in a cool, dry place within the temperature range of 8 ° C-28 ° C (46 ° F-82 ° F), stored in its original packaging. If this product is stored under conditions of 8 ℃ -18 ℃, it would be more ideal. To avoid contaminating unused glue, do not pour any spilled glue back into the original packaging bottle. If you want to obtain more specific information on storage life, please contact the local technical service department of Gaojian Company.
explain:
The information shown in this technical data sheet, including recommendations for product use and application, is based on our company's knowledge and experience related to the product at the time of creating the sheet Jiu Er Jiu Company is not responsible for whether the product is suitable for your company's production process, production conditions, expected use, and results We strongly recommend that your company conduct testing before producing the product to determine its suitability. Unless otherwise expressly agreed, our company shall not be liable for the information in the table or any other oral or written suggestions related to the products involved.
