A kind of aluminum ceiling film structure and its aluminum ceiling structure
A ceiling and adhesive film technology, applied in adhesives, building components, building structures, etc., can solve problems such as unstable bonding strength and service life, reduced bonding strength and bonding durability of aluminum ceilings, and achieve enhanced overall Compatibility, crystal point reduction, and viscosity reduction effects
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[0046] The present invention also provides a preparation method of the adhesive resin for aluminum ceiling, the method comprises: after mixing the raw materials uniformly according to the formula ratio, and then granulating by a reaction type twin-screw extruder, the main engine speed is 300 -500rpm, the length-diameter ratio of the twin-screw extruder is L:D≥44:1, and the extrusion processing temperature range is 130-220℃.
[0047] In a specific embodiment of the present invention, the PE of the PE layer 2 is mica-modified and colored PE, and the mica is added in an amount of 10-20% by weight.
[0048] In the specific embodiment of the present invention, the adhesive film structure adopts a three-layer structure. In terms of weight ratio, the adhesive resin layer 11 (30 wt %) is the first layer, and the PE layer 12 includes two identical PE layers. Their contents are respectively 35wt%, in other specific embodiments, each weight ratio can be adjusted according to the actual s...
Embodiment 1-5
[0052] Preparation of polyethylene graft masterbatch:
[0053] The polyethylene graft masterbatch of Examples 1-5, according to the following formula ratio (weight percentage), MLLDPE: LDPE: homopolymer PP: bis-2,5-hexane original: maleic anhydride=95:2:3: 0.025:1, the basic physical properties of the obtained masterbatch are as follows:
[0054] Melt Index (190℃ / 2.16Kg): 2.4; Density (g / cm3): 0.915; Yield Strength (MPa): 6.7; Breaking Strength (Mpa): 30.2; Elongation at Break (%): 70%; Shore Hardness (Shore D): 45 After mixing evenly, it is prepared by extruding and granulating through a reaction-type twin-screw extruder to implement a plasticizing blending process. 44:1, extrusion processing temperature range 80-210℃.
[0055] Preparation of Adhesive Resin for Aluminum Ceiling
[0056] The adhesive resins for aluminum ceilings of Examples 1-5 are prepared by extruding and granulating through a twin-screw extruder to implement a plasticizing blending process after mixing t...
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