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Polymer modification and application
by：CSSSLD
2021-01-23
Wen injection tooling/VIP
in recent years, as a nanometer composite material Nanometer calcium carbonate filled polymer modification has become a materials science has been rookie, aroused people's great attention. This kind of material and the advantages of organic and inorganic, because between inorganic and polymer interface area is very large, and there are chemical combination between polymer and inorganic filler interface, so it is the ideal adhesive performance, can eliminate the two kinds of inorganic and polymer matrix material coefficient of thermal expansion mismatch problem, give full play to the inorganic material excellent mechanical properties and heat resistance. Due to such nanocomposite melts or the rheological properties of fluid with similar, and therefore to the various types of processing has extensive applicability, has wide development prospects.
of nanometer calcium carbonate are currently in use process, many conventional blending composite method of the preparation of nano powder filler composites is far from nanometer level, and the micro composite materials only. The reason is that when the filler particle size decreases to nanometer size, the surface of the particles can be so great, that the aggregation between particles is very significant, the existing blending technology is adopted to obtain nanoscale uniformly blending, and the existing interface modification technology is difficult to completely eliminate the interfacial tension between the fillers and polymer matrix, and achieve the interface bonding. If dispersion of filler in the polymer matrix to nanoscale, it is possible to the rigidity, dimensional stability and thermal stability of inorganic fillers and the toughness of the polymer, processing, and the perfect combination of dielectric, polymer, mickey composite materials with excellent properties.
enhanced toughening mechanism of nano calcium carbonate as filler in the polymer, which is the major influencing factors on the properties of polymer particle size, aggregation state and surface activity, etc.
of nanometer calcium carbonate is more subtle than ordinary calcium carbonate particles. As particle ultra-micronization model. the boundary material particle surface atomic number increases, the proportion of the particles on the surface of the electronic and crystal structure change, the nanometer level, a set of packing particles will become a finite number of atoms, the nano material has a series of excellent physical and chemical performance. Most representative of the most obvious reflected in the change of the specific surface area and surface energy, the smaller the particle, the greater the specific surface energy of unit mass, increasing the contact area of fillers and polymer matrix, guarantee for the formation of physical tangles.
according to the theory of inorganic rigid particles in polymer toughening, a necessary condition is dispersed particles and resin interface bonding is good. Resin is under the action of external force, rigid nano-sized calcium carbonate particle causing crazing matrix resin absorb energy, thus improve the toughening effect.
from the state of aggregation of nanometer calcium carbonate, some nanoparticles formed a chain structure, it belongs to a structure. The structure, the more the higher the level of structured packing, the greater the chance of entanglement with polymer formation. Another packing acid alkali is also a reflection of its surface chemical activity, can affect the curing rate and physical properties of the rubber.
more wonderful sharing: 【 Injection molding processing VIP 】 Modified polyester PET, click directly.
or copy the link: http://www. csssld。 cn//html/2016/Info_0325/182。 HTML
nantong on plastic products factory's official website: http://www. csssld。 Cn / /
source network trimmer/injection molding processing and VIP
in recent years, as a nanometer composite material Nanometer calcium carbonate filled polymer modification has become a materials science has been rookie, aroused people's great attention. This kind of material and the advantages of organic and inorganic, because between inorganic and polymer interface area is very large, and there are chemical combination between polymer and inorganic filler interface, so it is the ideal adhesive performance, can eliminate the two kinds of inorganic and polymer matrix material coefficient of thermal expansion mismatch problem, give full play to the inorganic material excellent mechanical properties and heat resistance. Due to such nanocomposite melts or the rheological properties of fluid with similar, and therefore to the various types of processing has extensive applicability, has wide development prospects.
of nanometer calcium carbonate are currently in use process, many conventional blending composite method of the preparation of nano powder filler composites is far from nanometer level, and the micro composite materials only. The reason is that when the filler particle size decreases to nanometer size, the surface of the particles can be so great, that the aggregation between particles is very significant, the existing blending technology is adopted to obtain nanoscale uniformly blending, and the existing interface modification technology is difficult to completely eliminate the interfacial tension between the fillers and polymer matrix, and achieve the interface bonding. If dispersion of filler in the polymer matrix to nanoscale, it is possible to the rigidity, dimensional stability and thermal stability of inorganic fillers and the toughness of the polymer, processing, and the perfect combination of dielectric, polymer, mickey composite materials with excellent properties.
enhanced toughening mechanism of nano calcium carbonate as filler in the polymer, which is the major influencing factors on the properties of polymer particle size, aggregation state and surface activity, etc.
of nanometer calcium carbonate is more subtle than ordinary calcium carbonate particles. As particle ultra-micronization model. the boundary material particle surface atomic number increases, the proportion of the particles on the surface of the electronic and crystal structure change, the nanometer level, a set of packing particles will become a finite number of atoms, the nano material has a series of excellent physical and chemical performance. Most representative of the most obvious reflected in the change of the specific surface area and surface energy, the smaller the particle, the greater the specific surface energy of unit mass, increasing the contact area of fillers and polymer matrix, guarantee for the formation of physical tangles.
according to the theory of inorganic rigid particles in polymer toughening, a necessary condition is dispersed particles and resin interface bonding is good. Resin is under the action of external force, rigid nano-sized calcium carbonate particle causing crazing matrix resin absorb energy, thus improve the toughening effect.
from the state of aggregation of nanometer calcium carbonate, some nanoparticles formed a chain structure, it belongs to a structure. The structure, the more the higher the level of structured packing, the greater the chance of entanglement with polymer formation. Another packing acid alkali is also a reflection of its surface chemical activity, can affect the curing rate and physical properties of the rubber.
more wonderful sharing: 【 Injection molding processing VIP 】 Modified polyester PET, click directly.
or copy the link: http://www. csssld。 cn//html/2016/Info_0325/182。 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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