News Details
Silica coating crosslinking agent
2017-7-13 19:23:06
Silica coating crosslinking agent
Silicone coating cross-linking agent in the organic silicon has excellent thermal oxidation stability, almost all above 300 ℃, flash point is flame retardant. The study shows that a small amount of silicon compounds can be added to the polymer materials, which can be used to capture the principle of carbon and gas phase free radical.
By introducing the block copolymer polydimethylsiloxane (PDMS) into the polymer, the bending and impact resistance of the material can be enhanced. Using the diamine base PDMS as cross-linking agent, it is another effective way to introduce the silicon structure into epoxy resin.
White pigeons using one-step or two-step synthetic silicone cross-linking agent double (4 - amino phenoxy) dimethyl silane (APDS), and APDS/CYD - 128 using TGA method crosslinking process of thermogravimetric analysis, get the initial weight loss temperature (5%), temperature (Tmax) of 306.0, 339.0, 750800 ℃ when the carbon residue rate of 36.20%, 34.96%. With the addition of silicon, the heat stability and flame retardancy of crosslinking are improved.
The flame-retardant properties of the APDS/cyd-128 crosslinking agents were tested using LOI method. The LOI value of crosslinking increases with the increase of crosslinked APDS, and when the ratio is 35:10, the LOI value reaches a maximum value of 31.6, which is 63.7% higher than the 19.3 pure cyd-128.
Polydimethylsiloxane, also known as dimethyl siloxane, is a hydrophobic organic silicon material. In medicine, daily chemical products, food, buildings are applied in various fields, such as its derivatives has amounted to hundreds of species, the commonly used polysiloxane mainly include: poly dimethyl siloxane, ring methyl siloxane, amino siloxane, poly (methyl phenyl siloxane, polyether polysiloxane copolymer. The polydimethyl siloxane is one of the commonly used polysiloxane. This product is non-toxic, but it can cause vascular embolism and brain injury in clinic.
Chinese name: Diethyl toluene diamine(DETDA)
Chinese alias: aryl, aryl diethyl - aryl - methyl-p-phenylenediamine
English name: Benzenediamine, ar, ar-diethyl-ar-methyl-English aliases:Diethyltoluenediamine; ar, ar-Diethyl-ar-methylbenzenediamine;Diethylmethylbenzenediamine;
CAS No. :68479-98-1
EINECS No. :270 -877-4
Molecular formula: C11H18N2
Molecular Weight: 178.28
Boiling point: 310 ℃
Refractive index: 1.581
Flash Point: > 140 ℃
Inchi: InChI = 1/C11H18N2/c1-4-8-6-7 (3) 10 (12) 11 (13) 9 (8) 5-2/h6H ,4-5,12-13H2 ,1-3H3 density : 1.022
Risk Codes: R10; R35
RIDADR: UN 3082
Safety instructions: S2; S26; S39; S61
Packing Group: III
Silicone coating cross-linking agent in the organic silicon has excellent thermal oxidation stability, almost all above 300 ℃, flash point is flame retardant. The study shows that a small amount of silicon compounds can be added to the polymer materials, which can be used to capture the principle of carbon and gas phase free radical.
By introducing the block copolymer polydimethylsiloxane (PDMS) into the polymer, the bending and impact resistance of the material can be enhanced. Using the diamine base PDMS as cross-linking agent, it is another effective way to introduce the silicon structure into epoxy resin.
White pigeons using one-step or two-step synthetic silicone cross-linking agent double (4 - amino phenoxy) dimethyl silane (APDS), and APDS/CYD - 128 using TGA method crosslinking process of thermogravimetric analysis, get the initial weight loss temperature (5%), temperature (Tmax) of 306.0, 339.0, 750800 ℃ when the carbon residue rate of 36.20%, 34.96%. With the addition of silicon, the heat stability and flame retardancy of crosslinking are improved.
The flame-retardant properties of the APDS/cyd-128 crosslinking agents were tested using LOI method. The LOI value of crosslinking increases with the increase of crosslinked APDS, and when the ratio is 35:10, the LOI value reaches a maximum value of 31.6, which is 63.7% higher than the 19.3 pure cyd-128.
Polydimethylsiloxane, also known as dimethyl siloxane, is a hydrophobic organic silicon material. In medicine, daily chemical products, food, buildings are applied in various fields, such as its derivatives has amounted to hundreds of species, the commonly used polysiloxane mainly include: poly dimethyl siloxane, ring methyl siloxane, amino siloxane, poly (methyl phenyl siloxane, polyether polysiloxane copolymer. The polydimethyl siloxane is one of the commonly used polysiloxane. This product is non-toxic, but it can cause vascular embolism and brain injury in clinic.
Chinese name: Diethyl toluene diamine(DETDA)Chinese alias: aryl, aryl diethyl - aryl - methyl-p-phenylenediamine
English name: Benzenediamine, ar, ar-diethyl-ar-methyl-English aliases:Diethyltoluenediamine; ar, ar-Diethyl-ar-methylbenzenediamine;Diethylmethylbenzenediamine;
CAS No. :68479-98-1
EINECS No. :270 -877-4
Molecular formula: C11H18N2
Molecular Weight: 178.28
Boiling point: 310 ℃
Refractive index: 1.581
Flash Point: > 140 ℃
Inchi: InChI = 1/C11H18N2/c1-4-8-6-7 (3) 10 (12) 11 (13) 9 (8) 5-2/h6H ,4-5,12-13H2 ,1-3H3 density : 1.022
Risk Codes: R10; R35
RIDADR: UN 3082
Safety instructions: S2; S26; S39; S61
Packing Group: III
Hazard Class: 6.1
Polydimethylsiloxane chemical state of dimethyl silicone oil, colorless or light yellow liquid, odorless, transparent, heat resistance, cold resistance, viscosity with temperature changes little, water proofing property, surface tension, thermal conductivity, thermal conductivity coefficient of 0.134-0.134 W/M * K, pervious to light transmittance 100%, dimethyl silicone oil non-toxic tasteless, has physiological inertia, good chemical stability.
Electrical insulation and weatherability, hydrophobic good, and have high shear resistance, can be in - 50 ℃ ~ 200 ℃ under long time use. With excellent physical properties, can be directly used in moisture-proof insulation, damping, shock absorption, defoaming, lubrication, polishing, etc., are widely used as insulation, shockproof, prevent oil lubrication, dielectric fluid and heat transfer fluid. As well as used as a defoaming, deform agent, paint and chemical additive.
Polydimethylsiloxane can be mixed with lanolin, stearol, cetacol, monostearic acid glyceride, twain, sdisk and other surfactants as emulsifier matrix. The addition of thin-film forming agents such as PVP, PVA and cellulose derivatives in this article can enhance its protective properties. The release of the drug and the penetrating skin performance are faster than fuffins, lanolin and vaseline.
Polydimethyl siloxane except direct use, in order to disperse methyl silicone oil, easy to dip, spray, improve efficiency. It can be used in three types: solution, lipid and emulsion. Its and its derivatives are high quality raw materials of cosmetics, and have good skin care function, which belongs to the synthetic oil in cosmetic ingredients. This product is nontoxic and has no irritant to the skin and mucous membrane, but it is stimulating to the eyes and generally accepted as safe.
The hydrous polysiloxane, a polydimethyl siloxane, is the general name for this type of substance, also known as silicone or silicone oil. In cosmetics, it has the function of lubricating properties and anti-ultraviolet radiation. It has good air permeability and has obvious anti-dust function.
There are amorphous silicon and crystalline silicon. Crystalline silicon film, amorphous silicon is black, 2.32 2.34 g/cm3 density, melting point 1410 ℃, boiling point 2355 ℃, crystalline silicon belongs to atomic crystal. Insoluble in water, nitric acid and hydrochloric acid, soluble in hydrofluoric acid and lye. Hard and metallic luster.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Polydimethylsiloxane chemical state of dimethyl silicone oil, colorless or light yellow liquid, odorless, transparent, heat resistance, cold resistance, viscosity with temperature changes little, water proofing property, surface tension, thermal conductivity, thermal conductivity coefficient of 0.134-0.134 W/M * K, pervious to light transmittance 100%, dimethyl silicone oil non-toxic tasteless, has physiological inertia, good chemical stability.
Electrical insulation and weatherability, hydrophobic good, and have high shear resistance, can be in - 50 ℃ ~ 200 ℃ under long time use. With excellent physical properties, can be directly used in moisture-proof insulation, damping, shock absorption, defoaming, lubrication, polishing, etc., are widely used as insulation, shockproof, prevent oil lubrication, dielectric fluid and heat transfer fluid. As well as used as a defoaming, deform agent, paint and chemical additive.
Polydimethylsiloxane can be mixed with lanolin, stearol, cetacol, monostearic acid glyceride, twain, sdisk and other surfactants as emulsifier matrix. The addition of thin-film forming agents such as PVP, PVA and cellulose derivatives in this article can enhance its protective properties. The release of the drug and the penetrating skin performance are faster than fuffins, lanolin and vaseline.
Polydimethyl siloxane except direct use, in order to disperse methyl silicone oil, easy to dip, spray, improve efficiency. It can be used in three types: solution, lipid and emulsion. Its and its derivatives are high quality raw materials of cosmetics, and have good skin care function, which belongs to the synthetic oil in cosmetic ingredients. This product is nontoxic and has no irritant to the skin and mucous membrane, but it is stimulating to the eyes and generally accepted as safe.
The hydrous polysiloxane, a polydimethyl siloxane, is the general name for this type of substance, also known as silicone or silicone oil. In cosmetics, it has the function of lubricating properties and anti-ultraviolet radiation. It has good air permeability and has obvious anti-dust function.
There are amorphous silicon and crystalline silicon. Crystalline silicon film, amorphous silicon is black, 2.32 2.34 g/cm3 density, melting point 1410 ℃, boiling point 2355 ℃, crystalline silicon belongs to atomic crystal. Insoluble in water, nitric acid and hydrochloric acid, soluble in hydrofluoric acid and lye. Hard and metallic luster.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
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