Extrusion-calendering method was developed to prepare single-polymer composites（SPCs） of ultrahigh molecular weight polyethylene（ UHMWPE） fabric reinforcing low density polyethylene（LDPE）.Differential scanning c...Extrusion-calendering method was developed to prepare single-polymer composites（SPCs） of ultrahigh molecular weight polyethylene（ UHMWPE） fabric reinforcing low density polyethylene（LDPE）.Differential scanning calorimeter（DSC） experiments were executed to determine the setup of extrusion temperature.Effects of the die temperature on the tensile and interfacial performances of SPCs were studied through the tensile and T-peel tests,respectively. The results showed that both tensile strength and modulus increased initially and decreased afterwards as the temperature increased. The peak values of tensile strength and modulus of PE SPCs,which are 10. 8 and 3. 5 times as high as those of the unreinforced LDPE respectively,were obtained at 150 ℃. Higher temperatures also give a positive effect on peel strength. Scanning electron microscopy（ SEM） and camera were also used to observe the morphology of the SPCs samples.展开更多
Since Kuhn in 1956 first proposed intramolecular cross-linking of isolated single-polymer chains in dilute solutions,the method has been extensively employed to achieve single-chain colloids and tadpole colloids(Janus...Since Kuhn in 1956 first proposed intramolecular cross-linking of isolated single-polymer chains in dilute solutions,the method has been extensively employed to achieve single-chain colloids and tadpole colloids(Janus ones)from homopolymers and copolymers,respectively.展开更多
基金Supported by the National Natural Science Foundation of China(51403019)
文摘Extrusion-calendering method was developed to prepare single-polymer composites（SPCs） of ultrahigh molecular weight polyethylene（ UHMWPE） fabric reinforcing low density polyethylene（LDPE）.Differential scanning calorimeter（DSC） experiments were executed to determine the setup of extrusion temperature.Effects of the die temperature on the tensile and interfacial performances of SPCs were studied through the tensile and T-peel tests,respectively. The results showed that both tensile strength and modulus increased initially and decreased afterwards as the temperature increased. The peak values of tensile strength and modulus of PE SPCs,which are 10. 8 and 3. 5 times as high as those of the unreinforced LDPE respectively,were obtained at 150 ℃. Higher temperatures also give a positive effect on peel strength. Scanning electron microscopy（ SEM） and camera were also used to observe the morphology of the SPCs samples.
基金This work is supported by National Natural Science Foun-dation of China(51833005)。
文摘Since Kuhn in 1956 first proposed intramolecular cross-linking of isolated single-polymer chains in dilute solutions,the method has been extensively employed to achieve single-chain colloids and tadpole colloids(Janus ones)from homopolymers and copolymers,respectively.
