High temperature resistant nylon/ptt/peip/pbip copolymer and its preparation method and application
A technology of high temperature resistance and copolymer, which is applied in the field of high temperature resistant nylon and its preparation, can solve the problems of cost and cumbersome production process, difficulty in judging the reaction end point, high temperature difference, etc., and achieve good material processing fluidity, simple implementation mode, The effect of good heat resistance
Active Publication Date: 2016-05-25
SHANDONG GUANGYIN NEW MATERIALS
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Problems solved by technology
However, because most of the diamines and dibasic acid monomers used in the polymerization of high-temperature nylon have low solubility in water, it is difficult to judge the end point of the reaction in the process of salt formation
In the actual production process, it is also possible to raise the temperature of the system to form a salt, and then separate, purify, and dry to obtain a nylon salt, but this increases the cost and the cumbersome production process
[0007] Patents CN102660019A, CN102634012, and CN102660018 of Kingfa Technology Co., Ltd. disclose similar technical solutions, involving polyethylene terephthalate (PET), polybutylene terephthalate (PBT) and polyethylene naphthalate Ethylene glycol formate (PEN) three kinds of polyesters, finally obtain 6T and 6N (or 10T, 10N, 12T, 12N according to the different diamines used) or the experimental scheme of its blend, the purpose Both introduce the benzene ring of terephthalic acid (T) into the main chain to prepare semi-aromatic nylon. Compared with the present invention, its impact strength is not high enough, its fluidity is poor, and its high temperature resistance is relatively poor.
[0008] At present, there is no relevant report on improving material processing fluidity, improving impact strength and improving brittleness by preparing high temperature resistant nylon / PTT / PEIP / PBIP copolymer
Method used
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Embodiment 1～3
[0046] Add PTT, PEIP, PBIP, 1,6-hexanediamine and ethanol into a 20L polymerization kettle equipped with an electric stirrer, and heat up after purging with carbon dioxide. Under stirring, the temperature rose to 220°C, the pressure rose to 2.0 MPa, and the pressure was maintained. The pressure in the kettle is controlled to be constant by removing the moisture in the reaction system, the pressure is reduced after 8 hours of pressure holding reaction, and the material is kept for 1 hour after dropping to constant temperature and normal pressure to obtain a high temperature resistant nylon / PTT / PEIP / PBIP copolymer. For specific properties, see The following table:
[0047] Table: the copolymer performance comparison table of embodiment and comparative example
[0048]
[0049] It can be seen from the table that the high-temperature-resistant nylon / PTT / PEIP / PBIP copolymer of the present invention has better heat resistance and toughness than the high-temperature-resistant nyl...
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Abstract
The invention discloses a high temperature resistant nylon / PTT / PEIP / PBIP copolymer as well as a preparation method and an application thereof. The preparation method comprises the following steps: dissolving PPT resin, PEIP resin and PBIP resin and diamine in a solvent, polymerizing for 4-10 hours at 190-290 DEG C and pressure of 1.5-2.5 MPa to obtain the high temperature resistant nylon / PTT / PEIP / PBIP copolymer, wherein the mole ratio of the PTT to PEIP to PBIP to the diamine is (30-60): (15-30): (15-30): (70-99). The copolymer not only has good processing fluidity and impact strength, but also has good high temperature resistance.
Description
technical field [0001] The present invention relates to a kind of high temperature resistant nylon and its preparation method and application, specifically a kind of high temperature resistant nylon / polypropylene terephthalate (PTT) / polyethylene isophthalate (PEIP) / polyester Butylene isophthalate (PBIP) copolymer, its preparation method and application. Background technique [0002] Polyamide, commonly known as nylon, is a class of engineering plastics with excellent physical and mechanical properties. Aliphatic nylon, such as PA6 and PA66, has excellent mechanical strength, heat resistance, chemical resistance, wear resistance and self-lubricating properties. Its application fields include electronic appliances, automotive parts, furniture, building materials and fibers. Has become one of the important engineering plastics. [0003] In recent years, with the development of the industrial situation, the electronics, electrical appliances, information and other industries r...
Claims
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IPC IPC(8): C08G69/44
Inventor 郎丰正崔强鲍允纪杜兆强
Owner SHANDONG GUANGYIN NEW MATERIALS