Aging-resistant polyethylene resin specially used for rotational moulding, and preparation method thereof
A polyethylene resin and anti-aging technology, which is applied in the field of anti-aging polyethylene resin for rotomolding and its preparation, can solve the problems of poor comprehensive performance of blends, poor resin uniformity, and lack of special materials for rotomolding, and achieve outstanding UV resistance Effect of light aging and rotomolding processability, good resin uniformity
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specific Embodiment 2
[0026] Polymerization process conditions:
[0027] project
parameter value
Reaction temperature (°C)
93
Reaction pressure (MPa)
2.3
Ethylene partial pressure (MPa)
0.69
Hydrogen / ethylene (mol / mol)
0.158
0.180
Catalyst / resin (kg / Mkg)
0.085
Cocatalyst DC / T3(mol / mol)
40 / 30
[0028] In 100 parts by weight of polyethylene (PE), the proportion of additives is added:
[0029]
[0030] Light stabilizer benzotriazole, antioxidant phosphite, halogen absorber zinc stearate, and rheology modifier oleic acid amide are mechanically mixed according to the addition ratio. After mixing evenly, they are continuously conveyed by the screw and measured Pounds are mixed into polyethylene powder in a weight ratio of 0.47 / 100, granulated by an extruder, and packaged to obtain an anti-aging polyethylene resin for rotational molding. The performance analysis and c...
specific Embodiment 3
[0034] Polymerization process conditions:
[0035] project
parameter value
Reaction temperature (°C)
100
Reaction pressure (MPa)
2.3
Ethylene partial pressure (MPa)
0.80
Hydrogen / ethylene (mol / mol)
0.158
Butene / Ethylene
0.150
Catalyst / resin (kg / Mkg)
0.085
Cocatalyst DC / T3(mol / mol)
30 / 30
[0036] In 100 parts by weight of polyethylene (PE), the proportion of additives is added:
[0037]
[0038] Light stabilizer acrylonitrile derivatives, antioxidant triazine, halogen absorber zinc stearate, rheology modifier erucamide are mechanically mixed according to the addition ratio, and after mixing evenly, they are continuously conveyed by the screw, and the metering pound is pressed The weight ratio of 0.6 / 100 is mixed into polyethylene powder, granulated by extruder, and packaged to obtain anti-aging polyethylene resin for rotational molding. The performance analysis and...
specific Embodiment 4
[0041] Polymerization process conditions:
[0042] project
parameter value
Reaction temperature (°C)
95
Reaction pressure (MPa)
2.1
Ethylene partial pressure (MPa)
0.84
Hydrogen / ethylene (mol / mol)
0.260
Hexene / Ethylene(mol / mol)
0.120
Catalyst / resin (kg / Mkg)
0.085
Cocatalyst DC / T3(mol / mol)
30 / 30
[0043] In 100 parts by weight of polyethylene (PE), the proportion of additives is added:
[0044]
[0045] The light stabilizer is a one-to-one mixture of benzophenone and benzotriazole, the antioxidant phosphite, the halogen absorber synthetic hydrotalcite, and the rheology modifier oleic acid amide are mechanically mixed according to the addition ratio. , continuously conveyed by the screw, mixed into the polyethylene powder by weight ratio of 0.55 / 100 from the metering pound, granulated by the extruder, and packaged to obtain the anti-aging special polyethylene resin ...
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Abstract
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