A kind of one-component heat-curing type silk-screen silica gel and preparation method thereof
Technical field
The present invention relates to a kind of silk-screen silica gel and preparation method thereof, relate in particular to a kind of one-component heat-curing type silk-screen silica gel and preparation method thereof.
Background technology
Silk-screen silica gel is a kind of by serigraphy, can adhere to securely the special silica-gel of textile surface.Have environmental protection, can print chromatography, adhesive force is good, intensity is high, the soft exquisiteness of feel, third dimension is strong, decorative effect is attractive in appearance, excellent performance, the characteristics such as nontoxic.Silk-screen silica gel has two kinds at present, and a kind of is two component silk-screen silica gel, needs A, two kinds of silica gel of B could use after mixing, and need to be at 120-160 ℃ of baking-curing.Another is the one pack system silica gel that need not to toast, and at room temperature 6-10 minute is that nature dries.The former can use phenomenons such as the plug net can not occur for a long time, but needs baking, and relatively poor to cloth or the fabric adhesive force of part material.Do not need baking after the latter printing, but therefore easy plug net to constantly change silica gel in printing, waste morely, generally be applicable to adopt the material of A, B silica gel or the printing of fabric.
Summary of the invention
The object of the invention is to overcome defective of the prior art, a kind of one-component heat-curing type silk-screen silica gel and preparation method thereof is provided, easy to operate, the difficult plug net of described silk-screen silica gel use, strong adhesion, applied widely.
The present invention is achieved by the following technical programs.
A kind of one-component heat-curing type silk-screen silica gel, the constituent of described silk-screen silica gel is as follows by parts by mass:
Described base-material is the α with 100 parts, and the filler of alpha, omega-dihydroxy polydimethyl siloxane and 5-200 part joins in the vacuum kneader, and keeping temperature is 100-150 ℃, and vacuum is that the dehydration blend obtained in 30-200 minute under the 0.06-0.095MPa.
Above-mentioned a kind of one-component heat-curing type silk-screen silica gel, wherein, described α, the viscosity of alpha, omega-dihydroxy polydimethyl siloxane is the 1500-20000 centipoise.
Above-mentioned a kind of one-component heat-curing type silk-screen silica gel, wherein, described filler is at least a in nano-calcium carbonate, fume colloidal silica, precipitated silica, diatomite, silicon powder and the organobentonite.
Above-mentioned a kind of one-component heat-curing type silk-screen silica gel, wherein, described plasticizer is at least a in viscosity methyl-silicone oil, white oil and the alkoxyl silicone oil moored in 50-500.
Above-mentioned a kind of one-component heat-curing type silk-screen silica gel, wherein, described crosslinking agent is at least a in methyl tributanoximo silane, vinyl tributyl ketoximyl silane, phenyl tributanoximo silane and the four diacetylmonoxime base silanes.
Above-mentioned a kind of one-component heat-curing type silk-screen silica gel, wherein, described coupling agent is at least a in gamma-aminopropyl-triethoxy-silane, N-β-aminoethyl-γ-aminopropyltrimethoxysilane, two (γ-trimethoxy-silylpropyl) amine and the γ-glycidyl ether oxygen propyl trimethoxy silicane.
Above-mentioned a kind of one-component heat-curing type silk-screen silica gel, wherein, described catalyst is at least a in isopropyl titanate, butyl titanate, two (ethyl acetoacetate) two (isopropoxy) titanate esters complex compound and two (acetylacetone,2,4-pentanedione) two (isopropoxy) the titanate esters complex compounds.
A kind of preparation method of one-component heat-curing type silk-screen silica gel, preparation process is as follows: with α, alpha, omega-dihydroxy polydimethyl siloxane and filler join in the vacuum kneader, keeping temperature is 100-150 ℃, vacuum is blend 30-200 minute of dewatering under the 0.06-0.095MPa, be cooled to room temperature and obtain base-material, then at room temperature with base-material, crosslinking agent, coupling agent and plasticizer join in the stirred tank of high speed dispersion and mix, be 0.06-0.095MPa in vacuum, rotating speed is to stir 60-180 minute under the condition of 20-600rpm, and then adding catalyst, be 0.06-0.095MPa in vacuum, rotating speed is to stir discharging after 60-180 minute under the condition of 20-600rpm, can make one-component heat-curing type silk-screen silica gel.
Easy to operate, the difficult plug net of silk-screen silica gel use of the present invention, strong adhesion.Described method has prolonged silk-screen silica gel surface drying time at room temperature effectively, solved the plug net problem of traditional one-component silk-screen silica gel, one-component silk-screen silica gel and traditional identical production efficiency of two component silk-screen silica gel have been given by hot briquetting curing in the use procedure, and having excellent adhesion strength, the scope of application is wider.
The specific embodiment
Embodiment 1
With α, 200 parts of 100 parts of alpha, omega-dihydroxy polydimethyl siloxanes and nano-calcium carbonates join in the vacuum kneader, keeping temperature is 100 ℃, vacuum is the blend 120 minutes of dewatering under the 0.06MPa, be cooled to room temperature and obtain base-material, then at room temperature with 100 parts of base-materials, 5 parts of methyl tributanoximo silanes, 5 parts of vinyl tributyl ketoximyl silanes, 10 parts of 2 parts of gamma-aminopropyl-triethoxy-silanes and methyl-silicone oils join in the stirred tank of high speed dispersion and mix, be 0.06MPa in vacuum, rotating speed is to stir 120 minutes under the condition of 100rpm, and then add 0.01 part in two (ethyl acetoacetate) two (isopropoxy) titanate esters complex compounds, be 0.06MPa in vacuum, rotating speed is to stir discharging after 120 minutes under the condition of 100rpm, can make one-component heat-curing type silk-screen silica gel.
Embodiment 2
With α, 5 parts of 100 parts of alpha, omega-dihydroxy polydimethyl siloxanes and nano-calcium carbonates join in the vacuum kneader, keeping temperature is 120 ℃, vacuum is the blend 30 minutes of dewatering under the 0.06MPa, be cooled to room temperature and obtain base-material, then at room temperature with 100 parts of base-materials, 10 parts of methyl tributanoximo silanes, 3 parts of 0.5 part of gamma-aminopropyl-triethoxy-silane and methyl-silicone oils join in the stirred tank of high speed dispersion and mix, be 0.06MPa in vacuum, rotating speed is to stir 60 minutes under the condition of 20rpm, and then add 0.1 part in two (ethyl acetoacetate) two (isopropoxy) titanate esters complex compounds, be 0.06MPa in vacuum, rotating speed is to stir discharging after 120 minutes under the condition of 100rpm, can make one-component heat-curing type silk-screen silica gel.
Embodiment 3
With α, 25 parts of 100 parts of alpha, omega-dihydroxy polydimethyl siloxanes and fume colloidal silicas, 50 parts in diatomite joins in the vacuum kneader, keeping temperature is 120 ℃, vacuum is the blend 90 minutes of dewatering under the 0.07MPa, be cooled to room temperature and obtain base-material, then at room temperature with 100 parts of base-materials, 10 parts of vinyl tributyl ketoximyl silanes, 15 parts of 0.9 part of N-β-aminoethyl-γ-aminopropyltrimethoxysilane and white oils join in the stirred tank of high speed dispersion and mix, be 0.07MPa in vacuum, rotating speed is to stir 120 minutes under the condition of 200rpm, and then add 0.3 part of isopropyl titanate, be 0.07MPa in vacuum, rotating speed is to stir discharging after 120 minutes under the condition of 200rpm, can make one-component heat-curing type silk-screen silica gel.
Embodiment 4
With α, 100 parts of 100 parts of alpha, omega-dihydroxy polydimethyl siloxanes and silicon powders, 50 parts of organobentonites join in the vacuum kneader, keeping temperature is 140 ℃, vacuum is the blend 150 minutes of dewatering under the 0.08MPa, be cooled to room temperature and obtain base-material, then at room temperature with 100 parts of base-materials, 7 parts of methyl tributanoximo silanes, 3 parts of phenyl tributanoximo silanes, 1 part of gamma-aminopropyl-triethoxy-silane, 1.2 parts of two (γ-trimethoxy-silylpropyl) amine, 15 parts of 15 parts of methyl-silicone oils and alkoxyl silicone oils join in the stirred tank of high speed dispersion and mix, be 0.08MPa in vacuum, rotating speed is to stir 180 minutes under the condition of 400rpm, and then add 0.1 part of butyl titanate, 0.1 part in two (ethyl acetoacetate) two (isopropoxy) titanate esters complex compounds, be 0.08MPa in vacuum, rotating speed is to stir discharging after 180 minutes under the condition of 400rpm, can make one-component heat-curing type silk-screen silica gel.
Embodiment 5
With α, 80 parts of 100 parts of alpha, omega-dihydroxy polydimethyl siloxanes and precipitated silicas, 120 parts of silicon powders join in the vacuum kneader, keeping temperature is 150 ℃, vacuum is the blend 200 minutes of dewatering under the 0.095MPa, be cooled to room temperature and obtain base-material, then at room temperature with 100 parts of base-materials, 10 parts of vinyl tributyl ketoximyl silanes, 5 parts of four diacetylmonoxime base silanes, 1.5 parts of γ-glycidyl ether oxygen propyl trimethoxy silicanes, 1.5 parts of N-β-aminoethyls-γ-aminopropyltrimethoxysilane, 25 parts of 15 parts of methyl-silicone oils and white oils join in the stirred tank of high speed dispersion and mix, be 0.095MPa in vacuum, rotating speed is to stir discharging after 60 minutes under the condition of 600rpm, can make one-component heat-curing type silk-screen silica gel.
The performance indications of silk-screen silica gel of the present invention are as follows:
Here description of the invention and application is illustrative, is not to want that therefore, the present invention is not subjected to the restriction of the present embodiment with scope restriction of the present invention in the above-described embodiments, and the technical scheme that any employing equivalence replacement obtains is all in the scope of protection of the invention.