High-property polyhydroxyalkanoates (PHAs)/polybutylene succinate (PBS)/poly lactic acid (PLA) blend alloy
A high-performance, mixed-gold technology, applied in the field of materials, can solve the problems of low rigidity, poor toughness, and unsatisfactory mechanical properties, and achieve the effect of excellent comprehensive performance.
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[0019] Example 1:
[0020] The weight was 50 parts of P3HB4HB (4HB molar content is 15%, weight average molecular weight is 1.2 million), 8.5 parts of PBS (molecular weight is 180,000), 40 parts of PLA (molecular weight is 250,000), 0.6 parts of anti Oxidizing agent tetra[methyl-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid] pentaerythritol ester, 0.2 parts of paraffin, 0.5 parts of heat stabilizer zinc stearate and 0.2 parts of chain extender Proportionally, put it into a high-speed mixer and mix for 3 minutes, then pump the mixed material into a 50°C drying oven for 4 hours, and finally put it into a twin-screw extruder for extrusion to obtain a co-mixed gold material.
[0021] Under the same process, the mechanical properties of P3HB4HB / PBS / PLA alloy and P3HB4HB / PLA alloy are compared in Table 1.
[0022] Table 1
[0023] Alloy material category
Example Embodiment
[0024] Example 2:
[0025] Mix 64 parts of PHBV (HV molar content is 5%, molecular weight is 1.6 million) with 24 parts of PLA (molecular weight is 250,000), 10.1 parts of PBS (molecular weight is 180,000), 0.8 parts of antioxidant 3,5-two Stearyl tert-butyl-4-hydroxyphenyl propionate, 0.5 parts of lubricant erucamide, and 0.6 parts of heat stabilizer calcium stearate are weighed and put into a high-speed mixer and mixed for 4 minutes. Then the mixed materials were pumped into a drying oven at 60°C for 3 hours, and finally put into a twin-screw extruder for extrusion.
[0026] Under the same process, the mechanical properties of PHBV / PBS / PLA alloy and PHBV / PLA alloy are compared in Table 2.
[0027] Table 2
[0028] Alloy material category
Example Embodiment
[0029] Example 3:
[0030] Combine 40 parts of P3HB4HB (4HB with a molar content of 15% and molecular weight of 1.2 million) with 20 parts of PLA (molecular weight of 250,000) and 11.8 parts of PBS (molecular weight of 180,000), 26 parts of starch, and 0.5 parts of antioxidant 2.6-Di-tert-butyl-4-methylphenol and 0.7 parts of antioxidant distearyl thiodipropionate, 0.3 parts of lubricant paraffin and 0.5 parts of lubricant erucamide, 0.2 parts of antistatic agent Tetraalkylammonium salt, weighed and put into a high-speed mixer for mixing for 5 minutes, then the mixed material is pumped into a 70℃ drying oven for 4 hours, and finally put into a twin-screw extruder for extrusion , To obtain a total mixed gold material.
[0031] Under the same process, the mechanical properties of P3HB4HB / PBS / PLA alloy and P3HB4HB / PLA alloy are compared in Table 3.
[0032] table 3
[0033]
[0034] 30% PHBH (3-hydroxyacetic acid HH mole content is 15%, weight average molecular weight is 1.2 million), ...
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