A preparation method of high-strength hot-melt pressure-sensitive adhesive for self-adhesive layer of building paving materials
A technology of hot-melt pressure-sensitive adhesive and self-adhesive layer, which is applied in the direction of adhesive, adhesive type, rosin adhesive, etc., and can solve the problems of easy sliding of the bonding interface, poor weather resistance and stability, and weak bonding strength. , to achieve the effect of excellent temperature resistance, excellent bonding performance, and weak initial viscosity
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[0039] Another object of the present invention is to provide a method for preparing a high-strength hot-melt pressure-sensitive adhesive for self-adhesive layers of building paving materials. The method includes the following steps:
[0040] Step A: preparing a functional softener; the functional softener is obtained by mixing the modified load-carrying agent and the glidant according to the proportion and then adding an intramolecular lubricant and stirring;
[0041] Said step A comprises the following sub-steps:
[0042] Step A1: a modification step, the modification step is to use a surface modification method to modify the carrier and the flow aid, the carrier is spherical nano-inorganic particles; the carrier is CaCO 3 , SiO 2 、Al 2 o 3 , ZnO, Al(OH) 3 , Mg(OH) 2 , kaolin, hollow glass microspheres, one or more of montmorillonite; the particle diameter of the carrier is 10-100nm; the flow aid is spherical nano inorganic particles; the flow aid is CaCO 3 , SiO 2 、A...
Embodiment 1
[0051] Preparation of functional softener: (1) use titanate coupling agent to treat 38g nano-loading agent and 23g nano-flow aid respectively; (2) compound two kinds of nano-auxiliaries and mix them by ball milling process; (3) mix Add 120g of naphthenic oil 4010 and the above mixing aids into a high-speed stirring device, raise the temperature to 60-80°C, turn on the stirring device, and stir thoroughly for 40-80 minutes until the mixing aids are evenly dispersed.
[0052] Preparation of hot-melt pressure-sensitive adhesive: Add 440g of rosin resin and 6g of antioxidant 264 into the reaction kettle, heat up to 100-120°C to a molten state, add 182g of the above-mentioned functional softener, stir evenly, and rotate at 100-200 rpm / min, fully stirred for 50-90min; add 200g thermoplastic elastomer SIS into the above reaction kettle, raise the temperature to 150-180℃, control the speed at 60-100 rpm, stir for 30-70min until the materials are fully mixed, stop heating Stir, filter...
Embodiment 2
[0055] The functional softener used in this embodiment is prepared in the same way as in Example 1.
[0056] Preparation of hot-melt pressure-sensitive adhesive: Add 500g of terpene resin and 6g of antioxidant 264 into the reaction kettle, heat up to 100-120°C to a molten state, add 182g of the above-mentioned functional softener, stir evenly, and rotate at a speed of 100-200 Turn / min, fully stir for 50-90min; add 200g thermoplastic elastomer SIS into the above reaction kettle, raise the temperature to 150-180°C, control the speed at 60-100 rev / min, stir for 30-70min until the materials are fully mixed, stop Heating and stirring, filtering, defoaming, coating and use or cooling block packaging.
[0057]The properties of the finished high-strength hot-melt pressure-sensitive adhesive for the self-adhesive layer of building paving materials prepared in Example 2 are shown in Table 1.
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