PBS composite material containing PBST toughening agent and preparation method of composite material
A composite material and toughening agent technology, applied in the field of bio-based degradable materials, can solve the problems of incomplete degradation, large amount of plasticizer added, high cost, etc., and achieve the effect of reducing white pollution and improving thermal aspects
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Embodiment 1
[0023] This embodiment provides a preparation method of succinic acid / butanediol / 1,5-pentanediol copolyester, specifically as follows:
[0024] 1) Add succinic acid, butanediol, and 1,5-pentanediol according to the acid-alcohol molar ratio of 1:1.2, and the mass percentages of butanediol and 1,5-pentanediol are 80% and 20% , in the reactor in two stages: first stage esterification reaction temperature 200°C, reaction time 2h; second stage polycondensation reaction temperature 200°C, reaction time 2h, namely PBST-1.
[0025] 2) Add succinic acid, butanediol, and 1,5-pentanediol according to the acid-alcohol molar ratio of 1:1.2, and the mass percentages of butanediol and 1,5-pentanediol are 90% and 10% , in the reactor in two stages: first stage esterification reaction temperature 200°C, reaction time 1h; second stage polycondensation reaction temperature 200°C, reaction time 3h, namely PBST-2.
[0026] 3) Add succinic acid, butanediol, and 1,5-pentanediol according to the aci...
Embodiment 2
[0032] The present embodiment provides a kind of preparation method of the PBS composite material containing PBST toughening agent, and it comprises the steps:
[0033] Put 5% of PBST-1 and 95% of PBS, which account for the total mass percentage of the PBS composite material, into a mixer and mix evenly, then melt and blend the PBST plasticizer and PBS resin at 130-180°C, inject The pellets of the PBS composite material containing the PBST toughening agent can be obtained after being cooled and pelletized.
Embodiment 3
[0035] The present embodiment provides a kind of preparation method of the PBS composite material containing PBST toughening agent, and it comprises the steps:
[0036] PBST-1, which accounts for 3% of the total mass percentage of the PBS composite material, and PBS, which accounts for 95%, are put into a mixer and mixed evenly, and then the PBST plasticizer and PBS resin are melt blended at 130-180 ° C, The pellets of the PBS composite material containing the PBST toughening agent can be obtained after injection, cooling, and pelletizing.
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