704 glue is more adhesive than 705 glue, more suitable for bonding, 705 sealant curing more brittle. I use 703 and 708, both of which are milky white. I like to use 708, which feels a bit thicker and sticks firmly, easy to accumulate. 703 is too thin to accumulate, suitable for sticking labels.
From several models look, these several actually should be the same, the main performance is similar. It may be that individual attributes like bonding strength, usage temperature, viscosity, etc., are slightly different.
703 Silicone Rubber
1, product use: The product adopts a new type of curing system to compound coupling agent as crosslinking agent, compared with similar products at home and abroad, it has better adhesion performance, long storage time and pollution-free advantages. It has been widely used in more than ten industries such as electronics, instrument aviation, chemical industry, light industry, machinery, household appliances, military industry and scientific research departments.
2, product appearance: milky white viscous liquid
3. Product performance:
(1) Surface curing: 5~30 (minutes), strength: 1>2kv/cm2, temperature resistance: -60~150℃, elongation: 250%, shear strength: 1kg/cm2, volume resistance; 2.5×101.3Ω/cm, dielectric constant :3.4(1MHX) Breakdown voltage :16kv/mm.
② According to user requirements can be made black gray and other colors. The product is suitable for electronic components, optical instruments, chemical equipment, chemical pipelines, electric heaters, instruments, medical instruments and other adhesive seal, shock-proof, pot-sealing, can also be used for pasting a variety of labels, automobiles, TV, solar energy and other seal 704 Silicone
Product appearance: Milky white and black viscous liquid
First, product description: 704 silicone is a kind of good adhesion, high strength, non-corrosion of single component room temperature vulcanized silicone rubber. With excellent electrical insulation performance, sealing performance and aging resistance, can be used in the range of -50-+250 for a long time. It is mainly used for bonding, sealing, potting and fixing. Coating and other functions.
Two, typical use:
This product can be used as sealing, bonding, insulation, moisture-proof, anti-vibration material, as electronic components, semiconductor equipment, electronic and electrical equipment bonding and sealing material; Can also be used for aircraft cabin, instrument cabin, machine manufacturing related parts of the sealing material, aviation, electronics, electrical appliances, machine manufacturing and other industries ideal elastic adhesive.
Three, use process:
1, clean the surface: will be glued or coated surface tidy up clean, remove rust, dust, oil, etc. 2. Sizing: unscrew the cap of the rubber hose, install the plastic nozzle, open the nozzle with the blade according to the required size, and squeeze the glue liquid to the part that needs to be coated. 3, curing: the coating parts placed in a stable place, the curing process is from the surface to the internal curing, within 24 hours (room temperature and 55% relative humidity), the glue will be cured 2~4mm depth, if the location of colloid is deep, especially in the not easy to connect to the air. The time to complete curing will be extended, as will the time to cure if the temperature and humidity are low.
705 Clear Silicone
First, product appearance: 705 transparent silicone color viscous
Second, product description: This product is non-toxic, no solvent, no pollution, no corrosion, temperature resistance -60--+200℃, room temperature curing, good transparency. It has excellent electrical insulation and arc resistance, moisture-proof and shock-proof. Widely used in electronic components, instruments, chemical industry, light industry, machinery industry sealing, wire and cable and other fields of adhesive seal.
Kraft 703 Silicone Rubber Application Characteristic Use: single packing, no solvent, no corrosion. At room temperature absorb the water in the air curing. Easy to use, safe and pollution-free. Excellent aging resistance, moisture resistance, electrical insulation and arc resistance, good bonding performance. Long storage life, stable performance, can withstand -60℃ - +150℃, is an excellent bonding, insulation, "three prevention" material. It is widely used for sealing, coating and bonding of small components. It is not dangerous goods. Appearance: milky white thick temperature resistance: -60 ~ +150 degrees Unique features: good cold water resistance, slightly low temperature resistance, good adhesion, easy to yellow after light.
Applicable
1, underwater instrument moisture-proof seal
2. Submarine cable potting 3, small motor magnetic tile bonding
4. Surface coating before high pressure pack filling 5. Car Chassis
6, refrigeration equipment
7, plastic button bonding instructions: components for general cleaning treatment, coated with adhesive. At 60% humidity, the curing depth can reach 3mm in 24 hours at room temperature. The longer you leave it at room temperature, the better the bond will be. Temperature resistant components can be placed in the rubber layer after thorough curing between 50℃ - 150℃ drying for 4-12 hours, can achieve better results. After use, it is necessary to cover the rubber hose tightly, which can be saved for next time. Packing method: Aluminum plastic tube packing, net content 45g/ PCS, 200 PCS/box.
What is the use of silicone?
The amount of vinyl complex of chlorophenic acid catalyst can not be too much, to the convenience of operation shall prevail, otherwise the viscosity will increase is not conducive to operation; When the amount of catalyst is insufficient, the vulcanization is not complete, the surface of the foam body is sticky, the elasticity is not good, and the strength is poor.
Foam silicone rubber is liquid before vulcanization, suitable for potting material. Vulcanized foam body can be used at -60~159℃ for a long time, after 150℃, 72 hours of aging, or a 60~ 10 70℃ ten times of cold and hot alternating use, the foam body still maintains the original performance.
Can 706 silicone rubber cure under water?
Company test 706 silicone rubber in fresh water is also able to cure, pay attention to 706 silicone rubber and PTC adhesive is not too firm silicone peroxide high temperature curing double two four or double two five, one is to use organic tin as catalyst, can be cured at room temperature; The other is to use platinum as a catalyst, can be room temperature or heat curing.
In contrast to Kraft 5905 and 705,706, tensile force, shear force, bonding strength has been enhanced a lot. 706 is suitable for flexible potting, IC, inductor, electrical components, LED lamps, low strength requirements of the photoelectric industry, resistance, static sealant for 705,706 sealant; And the common 2600ml large barrel of 5905 is used in LED lamps, some outdoor light sets, power modules, controllers, wall washing lights, LED guardrail tubes, stage lights, high-power electrical appliances sealing......