Low brushed Silastic-HongYe silicone

Sealant in the construction drawing phenomenon not only affects the construction operations, the appearance of the parts of the seal compromised. Low wire drawing made of silicone rubber sealant can greatly improve efficiency. The drawing is also available from the configuration process of the sealant to be addressed in a planetary mixer, based glue, plasticizers, fillers, thixotropic agents, crosslinking agents, catalysts first mixed, thickening agent in Canada . Increase the adhesive N-ß-ammonia-ammonia-ethyl-ƴ propyl three silane ƴ-ammonia-propyl triethoxysilane, etc. can not be mixed with other components; otherwise, the sealant in the construction drawing phenomenon . We use the sealant extrusion, drawing, bonding and physical properties to test the wire drawing of the impact. First, we explain under the meaning of the words: extrusion amount of sealant is packaged in 330ml polyethylene sealed tube. The mouth of the sealed tube and cut into 5mm out of sealants in 0.2MPa of pressure, measured sealant extrusion in the 10s. The drawing is sealed tube mouth, extrusion amount using the above measured horizontally out of the sealant 5g sealed tube brought from the vertical direction, measured at this time the length of the sealant brushed. Physical properties of the sealant made of 2mm thick specimens, placed in 20 degrees and 55% relative humidity conditions, 7d, measuring its physical properties; sealant with 5mm thick glass, 1mm thick aluminum sheet, 1mm thick made of iron and 2mm thick PVC plate shear bond strength test pieces (the sealant thickness 1mm), placed 20 degrees relative humidity of 55% under the conditions of 7d, the survey area shear bond strength. Comparative formulation is formulated as follows: 35 kinematic viscosity (25 degrees) 50000m m / s, a, w-dihydroxy polydimethylsiloxane, 25 kinematic viscosity (25 degrees) 100m m / s a, w-hydroxy-poly two methyl silicone oil, 5 copies of the specific surface area 150 m2 / g of hydrophobic fumed silica and 50 parts of heavy calcium carbonate in a planetary mixer, separated from the wet conditions mixed; then adding four methyl butanone oxime silane and 0.1 parts dibutyltin bitterness of tin to join, dubbed sealant. ƴ-aminopropyl triethoxysilane and methyl silane and dibutyl bitterness tin join the paired comparison with the sealant. 85 kinematic viscosity (25 degrees) 50000m m / s, a, w-dihydroxy polydimethylsiloxane, 20 kinematic viscosity (25 degrees) 100m m / s a, w-hydroxy-poly two methyl silicone oil, 5 copies of the specific surface area 150 m2 / g of hydrophobic fumed silica and 50 parts of heavy calcium carbonate in a planetary mixer, separated from the wet conditions mixed; then adding four methyl butanone oxime silane, vinyl-butanone oxime silane and 0.1 parts dibutyltin bitterness of tin, separated from the wet conditions, deaeration mix well, then add the copy ƴ-aminopropyl triethoxysilane, every wet conditions mixing, the preparation of sealant. ƴ-aminopropyl trimethoxysilane join ketoxime silane, and dibutyl bitterness tin, dubbed sealants. 100 Kinematic viscosity (25 degrees) 20000m m / s, a, w-dihydroxy polydimethylsiloxane, 10 kinematic viscosity (25 degrees) 100m m / s a, w-hydroxy-poly two methyl siloxane, 1.0 parts of triethylene glycol and 10 copies of the specific surface area of ​​110 square meters / g of hydrophobic fumed silica in a planetary mixer, separated from the wet conditions mixed; then add six methyl butanone oxime silane, 0.1 parts dibutyl the bitterness tin, bubble separated from the wet conditions mixed, then add the the copy ƴ-aminopropyl triethoxysilane, every other wet conditions mixed, the preparation of sealant. ƴ-aminopropyl trimethoxysilane and methyl silane and dibutyl bitterness of tin at the same time to join, dubbed sealants.