Synthesis method of transparent block copolymer
A technology of a block copolymer and a synthesis method, which is applied to the synthesis field of transparent block copolymers, can solve the problems of many feeding times and synthesis steps, easy introduction of impurities in the preparation process, and increase of experimental failures, and achieves simple steps and physical properties. The effect of good mechanical properties and simple equipment
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Embodiment 1
[0034] Table 1 lists the compounds charged to the reactor, the amounts of these compounds charged to the reactor, the time these compounds were reacted in the reactor and the reactor temperature. The produced block copolymer has a light transmittance of 88%, a tensile strength of 34MPa and an elastic modulus of 0.79GPa, and a notched Izod impact strength of 14J / m. It also has a number-average molecular weight of 57392 and 97155 The weight average molecular weight (measured according to gel permeation chromatography).
Embodiment 2
[0036]Table 2 lists the compounds charged to the reactor, the amounts of these compounds charged to the reactor, the time these compounds were reacted in the reactor and the reactor temperature. The produced block copolymer has a light transmittance of 84%, a tensile strength of 35MPa and an elastic modulus of 0.61GPa, and a notched Izod impact strength of 13J / m. It also has a number-average molecular weight of 59726 and 104281 The weight average molecular weight (measured according to gel permeation chromatography).
Embodiment 3
[0038] Table 3 lists the compounds charged to the reactor, the amounts of these compounds charged to the reactor, the time these compounds were reacted in the reactor and the reactor temperature. The produced block copolymer has a light transmittance of 84%, a tensile strength of 46MPa and an elastic modulus of 1.02GPa, and a notched Izod impact strength of 13J / m. It also has a number-average molecular weight of 61050 and 99839 The weight average molecular weight (measured according to gel permeation chromatography).
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[0044] Test Results
[0045] like figure 1 The thermogravimetric spectrum of the transparent block copolymer is shown. The corresponding temperature T when the block copolymer decomposes 5% by mass 5% The maximum decomposition temperature is 402°C, and the maximum decomposition temperature is 450°C, which shows that the block copolymer has good processability and good thermal stability, and it star...
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