Temperature-resistant, corrosion-resistant and high-bond-performance adhesive and preparation method thereof
A high-bonding and adhesive technology, applied in polymer adhesive additives, non-polymer adhesive additives, adhesives, etc., can solve the problem of lack of bonding performance, corrosion resistance, medium penetration performance, resistance Thermal performance, impact toughness, good positioning effect and operational manufacturability, and restricting the development of adhesives, etc., to achieve the effect of increasing chemical bonding force, excellent contact bonding performance, and inhibiting volume shrinkage
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preparation example Construction
[0052] The preparation method of described adhesive comprises the steps:
[0053] Step 1. Put the composite emulsion in a planetary mixer, start stirring, add nanocellulose, stir for 25-30 minutes, then vacuumize and defoam; then continue to add gas-phase silica and water-based wetting and dispersing agent, and continue stirring for 10-15 minutes. After shoveling, close the cylinder head of the planetary mixer, vacuumize and degas, control the vacuum degree not higher than -0.1MPa, and then stir for 15-20min before discharging to obtain component A;
[0054] Step 2. Add the curing accelerator and coupling agent into the planetary mixer, stir for 10-12 minutes, vacuumize and defoam; then continue to add high-temperature resistant fillers, antioxidants and fungicides and anti-fungal agents, and continue stirring for 10-15 minutes. After shoveling Close the cylinder head of the planetary mixer, vacuumize and defoam, control the vacuum degree to not be higher than -0.1MPa, and the...
Embodiment 1
[0057] A temperature-resistant, corrosion-resistant, high-bonding adhesive, comprising A component and B component, the mass ratio of A component and B component is 1:0.5; A component contains the following raw materials in parts by weight: 40 parts of composite emulsion, 8 parts of nanocellulose, 8 parts of fumed silica, and 3 parts of water-based wetting and dispersing agent; component B contains the following raw materials in parts by weight: 1 part of vanadium acetylacetonate, 30 parts of high-temperature-resistant filler, coupling 0.8 part of anti-oxidant, 0.5 part of antioxidant 10100, 0.3 part of octylisothiazolinone;
[0058] The high-temperature-resistant filler includes Al2O3, boron carbide, and silicon nitride fibers. After mixing Al2O3, boron carbide, and Silicon Nitride fibers according to the mass ratio of 10:6:0.8, grind them through an 800-mesh sieve Obtain high temperature resistant filler.
Embodiment 2
[0060] A temperature-resistant, corrosion-resistant, high-bonding adhesive, comprising A component and B component, the mass ratio of A component and B component is 1:0.55; A component contains the following raw materials in parts by weight: 50 parts of composite emulsion, 9 parts of nanocellulose, 9 parts of fumed silica, and 4 parts of water-based wetting and dispersing agent; component B contains the following raw materials in parts by weight: 1.5 parts of tetramethylthiourea, 35 parts of high-temperature-resistant filler, 0.9 parts of coupling agent, 0.6 parts of antioxidant MB, 0.4 parts of 2-methyl-4-isothiazolin-3-one;
[0061] The high-temperature-resistant filler includes aluminum oxide, boron carbide, and silicon nitride fibers. After mixing the aluminum oxide, boron carbide, and silicon nitride fibers uniformly according to the mass ratio of 10:6.5:0.9, grind them through an 800-mesh sieve Obtain high temperature resistant filler.
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Abstract
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