Preparation method of hard hydrophobic polycarbonate material

Abstract

The invention discloses a preparation method of a hard hydrophobic polycarbonate material. According to the preparation method, graphene is mixed with polycarbonate and dispersed after being subjected to organic treatment; the compatibility between the graphene and a polymer is effectively improved; the stability and the strength of a finished product are improved; the treatment is carried out by adopting dodecafluoroheptyl propyl trimethoxysilane; fluorine ions are introduced onto the surface of the polymer; a contact angle between the polymer and water is increased and the surface hydrophobic performance of a finished-product material is effectively improved.

Description

technical field

[0001] The invention belongs to the field of materials, and in particular relates to a preparation method of a hard hydrophobic polycarbonate material. Background technique

[0002] Polycarbonate is a high molecular polymer containing carbonate groups in the molecular chain. According to the structure of the ester group, it can be divided into aliphatic, aromatic, aliphatic-aromatic and other types. Among them, the low mechanical properties of aliphatic and aliphatic-aromatic polycarbonates limit their application in engineering plastics. At present, only aromatic polycarbonate has been industrialized. Due to the special structure of polycarbonate, it has become the fastest-growing general-purpose engineering plastic among the five major engineering plastics.

[0003] Polycarbonate is a strong thermoplastic resin that can be synthesized from bisphenol A and carbon oxychloride (COCl2). The method that is mostly used now is the melt transesterification method...

Examples

Embodiment 1

[0019] A kind of preparation method of hard hydrophobic polycarbonate material, comprises the following steps:

[0020] (1) Get the calcium stearate of 3 weight parts, the barium stearate of 2 weight parts mix, join in the deionized water of 7 times of compound weight, add the saturated octadecylamide of 1 weight part, stir, obtain Amide dispersion;

[0021] (2) Take 14 parts by weight of graphene oxide, add it to 8 times the weight of pentaerythritol, add 3 parts by weight of dodecafluoroheptylpropyltrimethoxysilane, increase the temperature to 70 ° C, and keep stirring for 2 hours , add dropwise 25 parts by weight of sulfuric acid with a concentration of 60-70%, and after the dropwise addition, add it to polyvinylpyrrolidone that is 4 times the weight of the mixture, raise the temperature to 86-90°C, heat and stir for 2 hours, and discharge , cooled to normal temperature to obtain an alkyl esterified graphene oxide solution;

[0022] (3) get 3 weight parts of sorbitan mono...

Embodiment 2

[0028] (1) get the calcium stearate of 2 weight parts, the barium stearate of 1 weight part mix, join in the deionized water of 4 times of weight of compounding material, add the saturated octadecylamide of 0.6 weight part, stir, obtain Amide dispersion;

[0029] (2) Take 10 parts by weight of graphene oxide, add it to 5 times the weight of pentaerythritol, add 2 parts by weight of dodecafluoroheptylpropyltrimethoxysilane, increase the temperature to 60 ° C, and keep stirring for 1 hour , dropwise add 20 parts by weight of sulfuric acid with a concentration of 60%, after the dropwise addition is completed, add it to polyvinylpyrrolidone that is 3 times the weight of the mixture, raise the temperature to 86°C, heat and stir for 1 hour, discharge, and cool to normal temperature , to obtain an alkyl esterified graphene oxide solution;

[0030] (3) get 1 weight part of sorbitan monooleate, join in its weight 10-14 times THF, stir evenly, obtain ester dispersion liquid;

[0031] ...

technical field

[0001] The invention belongs to the field of materials, and in particular relates to a preparation method of a hard hydrophobic polycarbonate material. Background technique

[0002] Polycarbonate is a high molecular polymer containing carbonate groups in the molecular chain. According to the structure of the ester group, it can be divided into aliphatic, aromatic, aliphatic-aromatic and other types. Among them, the low mechanical properties of aliphatic and aliphatic-aromatic polycarbonates limit their application in engineering plastics. At present, only aromatic polycarbonate has been industrialized. Due to the special structure of polycarbonate, it has become the fastest-growing general-purpose engineering plastic among the five major engineering plastics.

[0003] Polycarbonate is a strong thermoplastic resin that can be synthesized from bisphenol A and carbon oxychloride (COCl2). The method that is mostly used now is the melt transesterification method...

Examples

Embodiment 1

[0019] A kind of preparation method of hard hydrophobic polycarbonate material, comprises the following steps:

[0020] (1) Get the calcium stearate of 3 weight parts, the barium stearate of 2 weight parts mix, join in the deionized water of 7 times of compound weight, add the saturated octadecylamide of 1 weight part, stir, obtain Amide dispersion;

[0021] (2) Take 14 parts by weight of graphene oxide, add it to 8 times the weight of pentaerythritol, add 3 parts by weight of dodecafluoroheptylpropyltrimethoxysilane, increase the temperature to 70 ° C, and keep stirring for 2 hours , add dropwise 25 parts by weight of sulfuric acid with a concentration of 60-70%, and after the dropwise addition, add it to polyvinylpyrrolidone that is 4 times the weight of the mixture, raise the temperature to 86-90°C, heat and stir for 2 hours, and discharge , cooled to normal temperature to obtain an alkyl esterified graphene oxide solution;

[0022] (3) get 3 weight parts of sorbitan mono...

Embodiment 2

[0028] (1) get the calcium stearate of 2 weight parts, the barium stearate of 1 weight part mix, join in the deionized water of 4 times of weight of compounding material, add the saturated octadecylamide of 0.6 weight part, stir, obtain Amide dispersion;

[0029] (2) Take 10 parts by weight of graphene oxide, add it to 5 times the weight of pentaerythritol, add 2 parts by weight of dodecafluoroheptylpropyltrimethoxysilane, increase the temperature to 60 ° C, and keep stirring for 1 hour , dropwise add 20 parts by weight of sulfuric acid with a concentration of 60%, after the dropwise addition is completed, add it to polyvinylpyrrolidone that is 3 times the weight of the mixture, raise the temperature to 86°C, heat and stir for 1 hour, discharge, and cool to normal temperature , to obtain an alkyl esterified graphene oxide solution;

[0030] (3) get 1 weight part of sorbitan monooleate, join in its weight 10-14 times THF, stir evenly, obtain ester dispersion liquid;

[0031] ...