A kind of triple cross-linked high-performance polymer and preparation method thereof
A high-performance polymer and polymer technology, applied in the field of high-performance polymers, can solve the problems of difficult trade-offs between high strength and high ductility of polymers, and achieve the effects of preventing material damage, good application prospects, and good solvent resistance
Active Publication Date: 2022-05-17
SOUTHWEAT UNIV OF SCI & TECH +1
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Problems solved by technology
[0004] The purpose of the present invention is to provide a triple cross-linked high-performance polymer and its preparation method, which solves the problem that the high strength and high ductility of existing polymers are difficult to balance
Method used
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Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0043] Dissolve 0.2 g of a mixture of bisphenol A epoxy resin, 1,6-hexanediamine, and 5-amino-1H-benzotriazole in a molar ratio of 10:4.5:1 in 2.5 mL of N,N-dimethylformaldehyde Amide (DMF), stirred evenly to form a mixed solution, filtered and cast on a clean flat glass, and cured at 80 ° C and 450 Torr for 12 hours to prepare the polymer sample PAHB-1.
Embodiment 2
[0045] Change the molar ratio of bisphenol A epoxy resin, 1,6-hexanediamine and 5-amino-1H-benzotriazole to 10:4:2, and other conditions are the same as in Example 1 to obtain a polymer sample PAHB-2.
Embodiment 3
[0047] Change the molar ratio of bisphenol A epoxy resin, 1,6-hexanediamine and 5-amino-1H-benzotriazole to 10:3.5:3, and other conditions are the same as in Example 1 to obtain a polymer sample PAHB-3.
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The invention discloses a triple cross-linked high-performance polymer and a preparation method thereof. The polymer is formed by curing and cross-linking a diepoxy monomer, a cross-linking monomer and a functional monomer, and contains covalent bonds and two A cross-linked network structure formed by multi-level hydrogen bonds of different strengths, the interaction strength between the covalent bonds and the two kinds of hydrogen bonds is gradually decreasing, through the formation of covalent bonds and multi-level hydrogen bonds of different strengths in the polymer The triple cross-linked network overcomes the dilemma of the strength-ductility trade-off of high-performance polymers, and the timely and continuous breaking and sufficient process of dynamic and hierarchical hydrogen bonds enable the polymer network to protect the structural integrity while maintaining structural integrity. Rapid response to the transfer and dissipation of the external environment, so that the resulting rigid polymer not only has high tensile strength but also has good extensibility.
Description
technical field [0001] The invention relates to a high-performance polymer, in particular to a triple cross-linked high-performance polymer and a preparation method thereof. Background technique [0002] High-performance polymers have excellent high temperature resistance and corrosion resistance; remarkable mechanical strength; especially a series of outstanding features such as light weight, structural designability, and shape adjustability, making this type of material gradually replace large Most traditional metals and inorganic materials have been widely used in microelectronics, precision machinery, especially aerospace, and have broad application prospects and great commercial value. In recent years, my country has made great progress in aerospace, medical equipment, military manufacturing and infrastructure construction. These developments have put forward higher requirements for the performance of related materials, especially for many High-performance polymer mater...
Claims
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IPC IPC(8): C08G59/50C08J3/24C08L63/00
CPCC08G59/5006C08G59/508C08J3/243C08J2363/00C08G73/0206C08G59/245C08J3/24C08J2379/02
Inventor 常冠军杨莉王城徐业伟黄英张林
Owner SOUTHWEAT UNIV OF SCI & TECH