Hot-melt asphalt adhesive and its production
A technology of adhesives and asphalt, which is applied in the direction of asphalt material adhesives, adhesives, adhesive types, etc., can solve the problems of slow bonding speed and low viscosity of emulsified asphalt, and achieve fast bonding speed, simple production process and applicable wide range of effects
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Embodiment 1
[0033] The preparation method of base asphalt: put the raw material of road petroleum asphalt (penetration = 70 1 / 10mm) into the reaction kettle, heat it, feed oxygen at 245°C, and react for 12 hours to make oxidized asphalt, which is base asphalt. The properties of the obtained base pitch are as follows: the penetration is 24 1 / 10mm, and the softening point is 68°C.
Embodiment 2
[0035] Composition of hot melt asphalt adhesive:
[0036] Base bitumen 100 parts
[0037] 4 copies of SBS
[0038] 6 parts petroleum resin
[0039] Aluminum oxide 15 parts
[0041] Sublimed sulfur 0.12 parts
[0042] Its preparation process is as follows:
[0043] Add the above-mentioned weighed base asphalt, SBS, and petroleum resin into the reaction kettle, heat to 175°C, stir for 2 hours at a stirrer speed of 4000 rpm, and then add alumina, Silicon oxide and cross-linking agent, continue to stir for 2 hours, the stirring speed is 2000 rpm, after the stirring process is completed, the material can be discharged, cooled to room temperature, and the target product is obtained. The resulting product has moderate and stable viscosity, and its properties are shown in Table 1.
[0044] project
Embodiment 3
[0046] Composition of hot melt asphalt adhesive:
[0047] Base bitumen 100 parts
[0048] 5 copies of SBS
[0049] 2 parts petroleum resin
[0050] Aluminum oxide 30 parts
[0051] Silicon oxide 2 parts
[0052] Sublimed sulfur 0.14 parts
[0053] Its preparation process is as follows:
[0054] Add the above-mentioned weighed base asphalt, SBS, and petroleum resin into the reaction kettle, heat to 160°C, stir for 40 minutes at a stirrer speed of 6000 rpm, and then add alumina, Silicon oxide and cross-linking agent, continue to stir for 4 hours, the stirring speed is 800 rpm, after the stirring process is completed, the material can be discharged, cooled to room temperature, and the target product is obtained. The resulting product has moderate and stable viscosity, and its properties are shown in Table 2.
[0055] project
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