Self-adhesive waterproof coiled material of super-strong cross laminated film and preparation process
The present invention relates to a self-adhesive waterproof coiled material of a super-strong cross laminated film, comprising sequentially from top to bottom: an isolation protection layer, a non-asphalt-based self-adhesive layer, a strong cross laminated film, an asphalt self-adhesive layer and a PE isolation film. One side of the upper surface of the coiled material is provided with an overlap edge, and the other side of the lower surface of the coiled material is also provided with an overlap edge. The waterproof coiled material provided in the present invention has better adhesive property with post-cast concrete than an asphalt-based coiled material, and can be better bonded to a main body structure (i.e., pre-paving anti-sticking coiled material); the strong cross laminated film in the middle of the coiled material has good ductility, so that when the base layer slightly subsides or the main body structure is slightly deformed, the coiled material can continue to be well bonded to the main body structure and would not be separated; and a good waterproof effect thus can be achieved.
1. A super-strong self-adhesive waterproof sheet material of a strong cross laminated film, comprising an isolation protection layer, a non-asphalt-based self-adhesive layer, a strong cross laminated film, an asphalt self-adhesive layer and a PE isolation film sequentially from top to bottom, wherein one side of sheet is provided with an overlap edge, and the other side of sheet is also provided with an overlap edge on the lower surface, wherein the isolation protection layer is sand modified by γ-aminopropyltriethoxysilane, comprising 30-45% sand with a particle size of 30-40 mesh, 30-50% sand with a particle size of 40-60 mesh and a remainder of 60-70 mesh;
the non-asphalt-based self-adhesive layer is a hot melt adhesive, and a formula of the hot melt adhesive is as follows:
Component
Total Part
SIS
10-15
SEBS
22-25
naphthenic oil
15-20
C5 hydrogenated resin
35-45
coupling agent
0.2-0.6
anti-aging agent
0.1-0.3.
2. The super-strong self-adhesive waterproof sheet material of the strong cross laminated film according to claim 1 , wherein the strong cross laminated film is formed by stacking, combining and hot-pressing four high-density polyethylene films crosswise one by one at 90°, and a total thickness of the four films is 0.265±0.05 mm.
3. The super-strong self-adhesive waterproof sheet material of the strong cross laminated film according to claim 1 , wherein a formula and a preparation method of the asphalt-based self-adhesive layer is as follows:
Component
Weight Ratio
asphalt
42-48
softening oil
8-15
SBS
6-10
SBR
2-5
tackifier
2-4
talc
28-34
ultraviolet absorber
0.1-0.4
interface agent
0.2-0.5.
4. The super-strong self-adhesive waterproof sheet material of the strong cross laminated film according to claim 1 , wherein
a preparation method of the sand comprises: providing components comprising 60-70 parts of white cement, 10-20 parts of white cement raw meal, 1-3 parts of seed crystals and 10-20 parts of fluorite, crushing all of the components and subjecting them to slurry preparation, blank preparation and sintering, wherein a sintering temperature is 1200-1400° C., crushing the sintered product, and sieving the product;
a modification method for the sand comprises: adding the sand measured in a proportion into a high-speed mixer, preheating the sand, wherein the sand is preheated to a temperature of 100-110° C., dried with the mixer being opened during the mixing and preheating process and preheated for 120-125 minutes ensuring that a moisture content of the sand is lower than 0.3%, and then adding a coupling agent in a proportion into the mixer, wherein an addition amount of the coupling agent is 4-5% of the total weight of the sand, modifying the sand for 30-35 minutes, keeping a temperature at 100-110° C. during the modifying process, removing the sand from the mixer after modification and storing the sand at room temperature.
5. The super-strong self-adhesive waterproof sheet material of the strong cross laminated film according to claim 4 , wherein the coupling agent is the γ-aminopropyltriethyoxysilane.
6. The super-strong self-adhesive waterproof sheet material of the strong cross laminated film according to claim 1 , wherein a preparation process of the super-strong self-adhesive waterproof sheet material of the strong cross laminated film comprises:
(1) an asphalt adhesive material molding process: performing a roller press briquetting, and controlling a temperature of the adhesive material at 140±10° C.;
(2) a blade coating process of the hot melt adhesive: controlling a temperature of blade coating at 145±10° C. for the hot melt self-adhesive layer;
(3) a sand-spreading control process of the isolation layer: spreading the sand uniformly and ensure no adhesive material is exposed, and then pressing the sand by starting a sand pressing device and controlling a pressure at 0.4-0.6 MPa;
(4) winding the finished product and delivering it to a warehouse.