Self-demoulding mold and preparation method thereof
A self-release mold and mold technology, applied in the direction of coating, etc., can solve the problem of release agent environmental pollution and so on
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Embodiment 1
[0024] A self-release model mold, including a mold base material, the use surface of the mold base material is coated with a self-release layer, the mold base material is carbon steel, the self-release layer is an inorganic coating, and the thickness of the self-release layer is 32 μm ; Among them, the inorganic coating includes the following components: 36 parts of nano-silica sol, 32 parts of organosilane, 5 parts of functional filler, 7 parts of water, 20 parts of inorganic pigment, 3 parts of functional additive, thickener 0.1 share.
[0025] Among them, the organosilane is methyltrimethoxysilane. The thickener is fumed silica with a particle size of less than 1 μm. The functional filler is a mixture of potassium titanate whiskers and alumina. The inorganic pigment is titanium dioxide. Functional additives include leveling agent (polyether-modified dimethylpolysiloxane copolymer), defoamer and polysiloxane, and the defoamer can be commercially available.
[0026] The p...
Embodiment 2
[0036] A self-release model mold, including a mold base material, the use surface of the mold base material is coated with a self-release layer, the mold base material is a fiberglass composite material, and an interface layer is also provided between the use surface of the mold base material and the self-release layer , the interface layer is water-based polyurethane material, the self-release layer is an inorganic coating, the thickness of the interface layer is 20 μm, and the thickness of the self-release layer is 25 μm. Among them, the inorganic coating includes the following components: 45 parts of nano-silica sol, 25 parts of organosilane, 10 parts of functional filler, 15 parts of water, 10 parts of inorganic pigment, 2 parts of functional additive, and 2 parts of thickener .
[0037] Wherein, the organosilane is tetraethoxysilane, and the rest of the components are the same as in Example 1.
[0038] The preparation method of the inorganic coating is the same as that o...
Embodiment 3
[0047] A self-release model mold, including a mold base material, the use surface of the mold base material is coated with a self-release layer, the mold base material is a fiberglass composite material, and an interface layer is also provided between the use surface of the mold base material and the self-release layer , the interface layer is made of epoxy resin material, the self-release layer is an inorganic coating, the thickness of the interface layer is 30 μm, and the thickness of the self-release layer is 45 μm. Among them, the inorganic coating includes the following components: 25 parts of nano-silica sol, 45 parts of organosilane, 8 parts of functional filler, 5 parts of water, 16 parts of inorganic pigment, 5 parts of functional additive, and 0.8 part of thickener .
[0048] Among them, the organosilane is methyltrimethoxysilane. All the other components are the same as in Example 1.
[0049] The preparation method of the inorganic coating is the same as that of E...
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