Photothermal Response Of Copper Phosphate Photothermal Conversition Materials Research On The Application Of Self-healing Polymers

Polymers are widely used in daily life,infrastructure,electrical and electronics,aerospace,etc.due to their unique and excellent mechanical properties,low temperature resistance,high temperature resistance,aging resistance,corrosion resistance,chemical resistance,and low surface energy.And other industrial production areas.With the continuous development of polymer application technology and the continuous expansion of application fields,people have put forward higher requirements for the functionality of polymers,such as the development of polymer polymers with self-healing ability to solve the polymer Damage problems and extend the service life.In this paper,the self-healing polymers with different substrates are developed by photothermal response design,and the photothermal response self-healing properties of different composite polymers designed based on near-infrared photothermal conversion materials CuPOs are explored.The specific research content mainly includes the following aspects:1.Study on synthesis and photothermal properties of novel photothermal materials(1)Based on the d-d transition theory of transition metal 3d electrons,a nano-amorphous copper phosphate CuPOs light-to-heat conversion material that can strongly absorb near-infrared light and efficiently convert its energy into thermal energy is designed and synthesized.(2)The phase and composition and morphology were characterized by FTIR?XRD?XPS and TEM.The results indicated that the prepared products were amorphous copper phosphate with floss-like morphology CuPOs.(3)Results of investigations on optical properties demonstrated that CuPOs strongly absorbed NIR light of 600?1000 nm with?_max=760 nm and 849 nm.(4)Photothermal properties of the prepared products were investigated,and the light-to-heat conversion efficiency performed by an 808 nm laser was calculated to be27.2%of CuPOs.2.Preparation and performance test of photothermal induced copper phosphate composite thermoplastic self-healing polymer.(1)CuPOs-LDPE self-healing polymer was prepared by compounding CuPOs with LDPE matrix.(2)The microstructure and element analysis of the quenched fracture surface of CuPOs-LDPE were studied by SEM,FTIR and EDS.the results show that CuPOs is uniformly dispersed in the LDPE matrix without agglomeration and good interface bonding.(3)The self-healing experiment was carried out under the irradiation of 808 nm near-infrared laser,and it was observed that it has good self-healing ability and cyclic self-healing ability.The results of mechanical properties show that the mechanical properties of self-healing copper phosphate composite thermoplastic polymer are similar to those before healing,and the healing effect is excellent.(4)The thermoplastic matrix was changed to PS and TPV,and the universality of copper phosphate composite thermoplastic self-healing polymer was studied.3.Copper phosphate non liquid coordination crosslinking self-healing NBR and its properties test.(1)CuPOs-NBR composite polymer was prepared by using CuPOs as complexing agent and photothermal conversion filler in non liquid phase.(2)The crosslinking of CuPOs-NBR composite polymer was tested by rotor less vulcanization apparatus,Fourier transform infrared spectroscopy and equilibrium swelling method.The results showed that the crosslinking of CuPOs-NBR composite polymer was effective.(3)The self-healing experiment was carried out under 808 nm near-infrared laser irradiation,and obvious self-healing phenomenon was observed.The results of mechanical properties test showed that the mechanical properties of CuPOs-NBR composite polymer could be obviously recovered.(4)The shape of CuPOs-NBR composite was restored by freezing at-10?and water bath at 60?for 15 s.The results show that CuPOs-NBR composite has good shape memory ability.