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PC/saturated polyester alloy
by：CSSSLD
2021-02-03
The refractive index of a PC and PS is very close, so the PC/PS alloy is transparent.
PC -
g -
PS capacity of PC/PS alloys birefringence is small, with PMMA close, optical disc substrate for the production.
PC/PS alloy melt viscosity is smaller than a PC, good processing flow, so the PC/PS alloy can be used for processing large thin-wall injection molding processing parts.
PC/PS alloy melt of non-newtonian index is bigger than pure PC, namely the non-newtonian melt sex is strong, the PC/PS alloy melt viscosity to temperature and shear rate is relatively sensitive, thus raise the temperature and increasing the screw rotation speed can improve the processing of alloy liquid.
PC for amorphous polymers, and PBT, PET crystallization of polymer. PC/unsaturated polyester and typical amorphous metal/crystal blend. PC and PBT, the molecule has a benzene ring, on some of the similar structure, make the PC compatibility with PBT, has certain, PC/PBT, or PC/PET is a partly compatible system. PC compatibility with PBT and PET part of a very important reason is that the PC and PBT and PET ester exchange reaction occurred in the process of melt blending, in the production of PC and PBT and PET copolymer, copolymer compatible with PC and PBT and PET components, thereby reducing the interfacial tension of the two phases, improved the two phase bonding, so as to improve the compatibility of the two phase.
PC/unsaturated polyester alloy refers to PC/PET alloy. PBT and PET with excellent comprehensive properties, especially excellent oil resistance and solvent resistance. PBT is a crystallization of fast thermoplastic resin, has the high melting temperature, but due to its low glass transition temperature, when the temperature is higher than that of 30 ℃, the mechanical properties decreased obviously. Comprehensive performance is better than PBT, PET, but due to its slow crystallization rate, molding cycle is long, thus restricted in the field of engineering plastics applications.
PBT and PET alone, there is a poor heat resistance, high impact strength not weakness, PC and PBT/PET blend, complement each other, each other is to improve the stress cracking resistance and solvent resistance of PC, reduce the cost of the PC, and improves the heat resistance and toughness of PBT and PET, thus has excellent comprehensive performance. PC/PBT alloy and PC/PET alloy has become a kind of important varieties in engineering plastics, has high industrial application value.
PC compatibility with PBT and PET by ester exchange reaction degree of different and different, as the ester exchange reaction of ongoing, blending system increasingly homogeneous, finally can form single phase blend. Exchange reaction does not occur in the case, the injection molding processing material PC and PBT and PET is incompatible. Someone in PC/PBT blend system to join the ester exchange reaction inhibitor, is determined under different ratio of PC/PBT, DSC melting blend the vitrification change of temperature, the blend had two Tg, specification of PC/PBT alloy two-phase structure characteristics. With the loss of the content of PC, PC, Tg rise, which have taken place in the blend move inside the glass transition temperature, the expression of compatibility of the blend part, therefore, does not occur the ester exchange reaction of PC/PBT blend system is still partly compatibility.
PC/PS alloy for some incompatible micro two-phase system, there are two glass transition temperature, between pure PS and pure between the glass transition temperature of the PC. The mechanical properties of PC/PS alloy is good, low content of PS the impact strength and tensile strength of PC/PS alloy is higher than PS, bending strength and bending modulus between the PC and PS, surface hardness of the alloy is higher than the PC. Thermal deformation temperature of the PC/PS alloy between PC and PS, 90 - Using deformation within 115 ℃ temperature range. PC/PS alloy is lower than pure PC water imbibition, at 0. Below 3%, water resistance is larger than the PC. In recent years, is to enlarge the application range of PC/PS alloy, the PC/PS alloy modified varieties.
more excellent articles: preparation and control factors of PC/PS alloys, click directly.
http://www。 csssld。 cn//html/2016/Info_1119/407。 HTML
nantong on suye's official website: http://www. csssld。 cn//
PC for amorphous polymers, and PBT, PET crystallization of polymer. PC/unsaturated polyester and typical amorphous metal/crystal blend. PC and PBT, the molecule has a benzene ring, on some of the similar structure, make the PC compatibility with PBT, has certain, PC/PBT, or PC/PET is a partly compatible system. PC compatibility with PBT and PET part of a very important reason is that the PC and PBT and PET ester exchange reaction occurred in the process of melt blending, in the production of PC and PBT and PET copolymer, copolymer compatible with PC and PBT and PET components, thereby reducing the interfacial tension of the two phases, improved the two phase bonding, so as to improve the compatibility of the two phase.
PC/unsaturated polyester alloy refers to PC/PET alloy. PBT and PET with excellent comprehensive properties, especially excellent oil resistance and solvent resistance. PBT is a crystallization of fast thermoplastic resin, has the high melting temperature, but due to its low glass transition temperature, when the temperature is higher than that of 30 ℃, the mechanical properties decreased obviously. Comprehensive performance is better than PBT, PET, but due to its slow crystallization rate, molding cycle is long, thus restricted in the field of engineering plastics applications.
PBT and PET alone, there is a poor heat resistance, high impact strength not weakness, PC and PBT/PET blend, complement each other, each other is to improve the stress cracking resistance and solvent resistance of PC, reduce the cost of the PC, and improves the heat resistance and toughness of PBT and PET, thus has excellent comprehensive performance. PC/PBT alloy and PC/PET alloy has become a kind of important varieties in engineering plastics, has high industrial application value.
PC compatibility with PBT and PET by ester exchange reaction degree of different and different, as the ester exchange reaction of ongoing, blending system increasingly homogeneous, finally can form single phase blend. Exchange reaction does not occur in the case, the injection molding processing material PC and PBT and PET is incompatible. Someone in PC/PBT blend system to join the ester exchange reaction inhibitor, is determined under different ratio of PC/PBT, DSC melting blend the vitrification change of temperature, the blend had two Tg, specification of PC/PBT alloy two-phase structure characteristics. With the loss of the content of PC, PC, Tg rise, which have taken place in the blend move inside the glass transition temperature, the expression of compatibility of the blend part, therefore, does not occur the ester exchange reaction of PC/PBT blend system is still partly compatibility.
PC/PS alloy for some incompatible micro two-phase system, there are two glass transition temperature, between pure PS and pure between the glass transition temperature of the PC. The mechanical properties of PC/PS alloy is good, low content of PS the impact strength and tensile strength of PC/PS alloy is higher than PS, bending strength and bending modulus between the PC and PS, surface hardness of the alloy is higher than the PC. Thermal deformation temperature of the PC/PS alloy between PC and PS, 90 - Using deformation within 115 ℃ temperature range. PC/PS alloy is lower than pure PC water imbibition, at 0. Below 3%, water resistance is larger than the PC. In recent years, is to enlarge the application range of PC/PS alloy, the PC/PS alloy modified varieties.
more excellent articles: preparation and control factors of PC/PS alloys, click directly.
http://www。 csssld。 cn//html/2016/Info_1119/407。 HTML
nantong on suye's official website: http://www. csssld。 cn//
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