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The compatibility of polymer
by：CSSSLD
2021-01-23
Article/VIP
the compatibility of polymer injection molding processing, should be based the principle of combining the thermodynamic compatibility and dynamics, all the factors that affect the compatibility of polymer, find out the regularity of things. Polymer alloy composition design, that is, choose what group, and the size of the relative molecular mass and component proportion will have different degrees of influence on compatibility.
1。 Solubility parameters of similar principle, relative molecular mass should be smaller, the greater the difference but the solubility parameters of similar principle applies only to nonpolar component system.
2。 Similar polarity principle, namely the more similar the polarity between system components, the better the compatibility.
3。 Similar system principle, system structure of each component in the similar, good compatibility. So-called structure similar, straightforward in the molecular chain of components contain the structure of the same or similar unit.
4。 Crystallization ability of similar principle, when for the crystallization of polymer blending system, the crystallization of multicomponent crystallization ability namely ease close to maximum crystallization, good compatibility. And the compatibility of amorphous/amorphous/amorphous system more bad, only when mixed crystal incompatible.
5。 The closer the system of each component in the surface tension, the compatibility, the better. Blend in molten, similar to the emulsion, stability and dispersion are controlled by the surface tension of two phase.
6。 Of each component in the system viscosity similar to components between the infiltration and expansion, forming stable miscibility area, so compatibility is good.
polyamide blend compatibilizing technology
for polymer blending system, most of the elm partly compatible system, if the lack of adequate viscosity between the blending component, resilience and strain cannot effectively in two phases and fragmented, the performance of the blend system was very bad. Nantong on plastic products factory, injection molding processing services for you.
1 using the compatilizer compatibilizing is very important in the modern polymer blending research development direction, compatilizer of capacity is divided into two categories.
A. Block copolymer used as compatibilizer. Theoretically, block copolymer can be any combination into a variety of copolymer, monomer copolymerization with different structure, one of the monomer to PA reaction, another monomer have good compatibility with other components or reactivity.
B。 Graft copolymer as a compatibility. Usually, this kind of graft copolymer is involved in PA blend polymer or can react with PA to send the product of monomer for copolymerization.
2。 Direct response capacity is blending components and PA blend components with P in the macromolecular chain of macromolecular chain amino groups at the end, the polymer with PA can send chemical combination, enhanced the interface bonding strength between the two polymers. Basically has the following these methods
A. The copolymerization modification of capacity. Many polymers with PA blend of blending performance can be obtained, but the poor compatibility, after using the polymer monomer copolymerization with other monomers of copolymer and PA blend can improve the compatibility.
B。 By ultraviolet (uv) radiation orthodoxy is blending component or system, after radiation or plasma radiation, achieve the goal of capacity expansion.
more wonderful sharing: polymer blending related instructions, click directly.
or copy the link: http://www. csssld。 cn//html/2016/Info_0316/173。 HTML
nantong on plastic products factory's official website: http://www. csssld。 Cn / /
source network trimmer/injection molding processing and VIP
the compatibility of polymer injection molding processing, should be based the principle of combining the thermodynamic compatibility and dynamics, all the factors that affect the compatibility of polymer, find out the regularity of things. Polymer alloy composition design, that is, choose what group, and the size of the relative molecular mass and component proportion will have different degrees of influence on compatibility.
1。 Solubility parameters of similar principle, relative molecular mass should be smaller, the greater the difference but the solubility parameters of similar principle applies only to nonpolar component system.
2。 Similar polarity principle, namely the more similar the polarity between system components, the better the compatibility.
3。 Similar system principle, system structure of each component in the similar, good compatibility. So-called structure similar, straightforward in the molecular chain of components contain the structure of the same or similar unit.
4。 Crystallization ability of similar principle, when for the crystallization of polymer blending system, the crystallization of multicomponent crystallization ability namely ease close to maximum crystallization, good compatibility. And the compatibility of amorphous/amorphous/amorphous system more bad, only when mixed crystal incompatible.
5。 The closer the system of each component in the surface tension, the compatibility, the better. Blend in molten, similar to the emulsion, stability and dispersion are controlled by the surface tension of two phase.
6。 Of each component in the system viscosity similar to components between the infiltration and expansion, forming stable miscibility area, so compatibility is good.
polyamide blend compatibilizing technology
for polymer blending system, most of the elm partly compatible system, if the lack of adequate viscosity between the blending component, resilience and strain cannot effectively in two phases and fragmented, the performance of the blend system was very bad. Nantong on plastic products factory, injection molding processing services for you.
1 using the compatilizer compatibilizing is very important in the modern polymer blending research development direction, compatilizer of capacity is divided into two categories.
A. Block copolymer used as compatibilizer. Theoretically, block copolymer can be any combination into a variety of copolymer, monomer copolymerization with different structure, one of the monomer to PA reaction, another monomer have good compatibility with other components or reactivity.
B。 Graft copolymer as a compatibility. Usually, this kind of graft copolymer is involved in PA blend polymer or can react with PA to send the product of monomer for copolymerization.
2。 Direct response capacity is blending components and PA blend components with P in the macromolecular chain of macromolecular chain amino groups at the end, the polymer with PA can send chemical combination, enhanced the interface bonding strength between the two polymers. Basically has the following these methods
A. The copolymerization modification of capacity. Many polymers with PA blend of blending performance can be obtained, but the poor compatibility, after using the polymer monomer copolymerization with other monomers of copolymer and PA blend can improve the compatibility.
B。 By ultraviolet (uv) radiation orthodoxy is blending component or system, after radiation or plasma radiation, achieve the goal of capacity expansion.
more wonderful sharing: polymer blending related instructions, click directly.
or copy the link: http://www. csssld。 cn//html/2016/Info_0316/173。 HTML
nantong on plastic products factory's official website: http://www. csssld。 Cn / /
source network trimmer/injection molding processing and VIP
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