TPE coated silicane cross-linked polyethylene composite material and preparation method thereof
A technology of cross-linked polyethylene and composite materials, which is applied in the field of TPE-coated silane cross-linked polyethylene composite materials and its preparation, can solve problems such as weak bonding, and achieve good bonding effect, stable coating and bonding, and excellent The effect of temperature and weather resistance
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Embodiment 1
[0025] (1) Preparation of silane grafted polyethylene:
[0026] Prepare 100 parts of polyethylene, 5 parts of vinyltriethoxysilane, and 0.1 part of dicumyl peroxide in parts by weight, extrude and granulate through screw at 170°C to obtain silane-grafted polyethylene material, press Parts by weight Prepare 100 parts of polyethylene, 3 parts of tris(2,4-di-tert-butylphenyl) phosphite, 0.5 part of di-n-butyltin dilaurate, extrude and granulate through screw at 190°C to obtain Catalyzed polyethylene material, the silane grafted polyethylene material and the catalytic polyethylene material are mixed uniformly according to the weight ratio of 95:5 to obtain silane grafted polyethylene, wherein the polyethylene density is 0.91g / cm3, and the melt index is 20g / cm3. 10min.
[0027] (2) Preparation of TPE material:
[0028] Prepare the following raw materials in parts by weight: 25 parts of SEBS, 50 parts of white oil, 25 parts of polypropylene, 15 parts of maleic anhydride graft comp...
Embodiment 2
[0034] (1) Preparation of silane grafted polyethylene:
[0035]Prepare 80 parts of polyethylene, 1 part of vinyltriethoxysilane, and 0.15 parts of dicumyl peroxide in parts by weight, and extrude and granulate through a screw at 250 ° C to obtain a silane-grafted polyethylene material. Prepare 80 parts by weight of polyethylene, 6 parts of tris(2,4-di-tert-butylphenyl) phosphite, 1 part of di-n-butyltin dilaurate, extrude and granulate through screw at 220°C to obtain Catalyzed polyethylene material, the silane-grafted polyethylene material and the catalytic polyethylene material are mixed uniformly according to the weight ratio of 90:15 to obtain silane-grafted polyethylene, wherein the density of polyethylene is 0.93g / cm 3 , Melt index 10g / 10min.
[0036] (2) Preparation of TPE material:
[0037] Prepare the following raw materials in parts by weight: 45 parts in SEBS, 90 parts in white oil, 40 parts in polypropylene, 25 parts in maleic anhydride grafting compatibilizers, ...
Embodiment 3
[0043] (1) Preparation of silane grafted polyethylene:
[0044] Prepare 120 parts of polyethylene, 3 parts of vinyltriethoxysilane, and 0.1 part of dicumyl peroxide in parts by weight, extrude and granulate through screw at 220°C to obtain silane-grafted polyethylene material, press Parts by weight Prepare 120 parts of polyethylene, 4 parts of tris(2,4-di-tert-butylphenyl) phosphite, 2 parts of di-n-butyltin dilaurate, extrude and granulate through screw at 160°C to obtain Catalyzed polyethylene material, the silane-grafted polyethylene material and the catalytic polyethylene material are mixed uniformly according to the weight ratio of 85:5 to obtain silane-grafted polyethylene, wherein the density of polyethylene is 0.91g / cm 3 , Melt index 20g / 10min.
[0045] (2) Preparation of TPE material:
[0046] Prepare the following raw materials in parts by weight: 30 parts of SEBS, 60 parts of white oil, 20 parts of polypropylene, 25 parts of maleic anhydride graft compatibilizer, ...
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