简体中文
1. Classification of masterbatches
1) According to the application
Masterbatch is divided into injection masterbatch, blow molding masterbatch, spinning masterbatch, etc., and each variety can be divided into different grades.
Advanced injection masterbatch is used in cosmetic packaging boxes, toys, electrical enclosures and other advanced products; ordinary injection masterbatch is used in general daily plastic products, industrial containers, etc. Advanced blow molding masterbatch is used for blow molding coloring of ultra-thin products.
2) Depending on the carrier
Divided into PE, PP, PVC, PS, ABS, EVA, PC, PET, PEK, phenolic resin, epoxy resin, acrylic resin, unsaturated polyester resin, polyurethane, polyamide, fluororesin masterbatch, etc.
3) Depending on the function
Divided into anti-static, flame retardant, anti-aging, antibacterial, whitening and brightening, anti-reflection, weather resistance, extinction, pearlescent, imitation marble pattern (flow pattern), wood grain masterbatch, etc.
4) According to user usage
Divided into general color masterbatch and special color masterbatch. Low-melting PE masterbatches are often used as general-purpose masterbatches for coloring other resins other than carrier resins. The vast majority of formal color masterbatch enterprises in the world generally do not produce general-purpose color masterbatches. The general-purpose color masterbatches have a very narrow general range, and have poor technical indicators and economic benefits.
Universal masterbatches show different colors in different plastics, and the coloring effect is less predictable. The general color masterbatch affects the strength of the product, and the product is easily deformed and twisted, which is more obvious for engineering plastics. For universal color masterbatch, higher heat-resistant grade pigments are selected, which is costly and wasteful.
In the process of product processing, the special color masterbatch has significant advantages such as high concentration, good dispersibility and cleanliness. The heat-resistant grade of the special color masterbatch is generally compatible with the plastic used for the product. It can be used with confidence under normal temperature. It will cause different degrees of discoloration only when the temperature exceeds the normal range and the downtime is too long.
Lotus's MASTERBATCH RANGE (Click to Know More details)
* Color masterbatch
* Black masterbatch
* White masterbatch
* Additive masterbatch
* Filler masterbatch
2. Basic ingredients of masterbatch raw materials
1) Pigments
Pigment is the basic coloring component. It is best to pre-treat the surface of its fine particles with resin to prevent mutual flocculation and make it easy to disperse. In order to coat and mix evenly, a solvent that has affinity for the pigment and can dissolve the resin, such as o-dichlorobenzene, chlorobenzene, and xylene, is used. In the case where the resin is dissolved, the dispersion treatment of the pigment is performed, and then the solvent is recovered or removed.
2) Carrier resin
The carrier is the matrix of the masterbatch. At present, special color masterbatches use the same resin as the carrier, which can ensure the compatibility of the color masterbatch and the colored resin, which is conducive to better dispersion of the pigment. There are many types of carrier resins, such as polyethylene, random polypropylene, poly-1-butene, low molecular weight polypropylene, etc.
For polyolefin masterbatch, LLDPE or LDPE with high melt index is generally used as the carrier resin, which has good processing fluidity. It is blended with the colored resin to adjust the viscosity of the system, and plays the role of infiltrating and dispersing pigments. Minimize the amount of dispersant, even without dispersant, it can achieve good dispersing effect, and ensure that the performance of the colored product does not decline.
3) Dispersant
The dispersant wets and coats the pigment, so that the pigment can be dispersed evenly in the carrier and no longer agglomerate. Its melting point should be lower than that of the resin, and it has good compatibility with the resin and good affinity with the pigment. There are many types of dispersants, such as low molecular weight polyethylene wax, polyester, stearate, white oil, oxidized low molecular weight polyethylene and so on.
4) Additive
In addition to coloring, the masterbatch also adds flame retardants, antioxidants, antistatic agents, light stabilizers, etc., according to various requirements of users, and has various functions at the same time. Sometimes the user does not require it, but the masterbatch company will also suggest adding some additives according to the needs of the product.
3. Production equipment
Masterbatch production equipment includes grinding equipment, high and low speed kneaders, mixers, extrusion granulation equipment, etc. Grinding equipment includes sand mill, cone mill, colloid mill, high shear disperser, etc.
The kneader is decompressed and exhausted by vacuuming, volatiles are extracted and dehydrated; thermal working conditions are heated by heat transfer oil, steam heating or water cooling; the discharging methods are turning over the cylinder, discharging under the valve and discharging by screw; kneading The propeller adopts the variable frequency governor to adjust the speed.
The mixer is divided into two types: open-type rubber mixer and closed type rubber mixer. Extrusion granulation equipment includes single-screw extruder, twin-screw extruder (flat, flat, tapered, tapered), multi-screw extruder and non-screw extruders.
4. Application and Development of Color Masterbatch
In the plastics industry, the market demand for color masterbatch is concentrated in engineering plastics products (home appliances, automobiles), architectural plastics products (pipes, profiles), agricultural film products, plastic packaging products, etc. Home appliances, automobiles, and construction plastic products industries have high requirements for color masterbatches and a large amount of them, which has a driving effect on the development of color masterbatches.
Carbon black is widely used in wires, cables and tires, and the traditional carbon black is all changed to carbon black masterbatch, and its dosage occupies the first position in all color masterbatches. At present, domestic and foreign carbon black enterprises can not fully produce carbon black masterbatch. It is necessary to conduct research on tire carbon black masterbatch to improve the performance of its products, and the market potential is huge.
Fiber dope coloring is when the fiber is spinning, the color masterbatch is directly added to the fiber viscose or fiber resin, so that the pigment appears in the spinning, which is called internal fiber coloring. Pigments for fiber coloring masterbatches require bright color, good dispersibility, good thermal stability, light resistance, solvent resistance, acid and alkali resistance, bleach resistance, insoluble in water, and inorganic or organic pigments can be selected.
Lotus's MASTERBATCH RANGE (Click to Know More details)
* Color masterbatch
* Black masterbatch
* White masterbatch
* Additive masterbatch
* Filler masterbatch
1) According to the application
Masterbatch is divided into injection masterbatch, blow molding masterbatch, spinning masterbatch, etc., and each variety can be divided into different grades.
Advanced injection masterbatch is used in cosmetic packaging boxes, toys, electrical enclosures and other advanced products; ordinary injection masterbatch is used in general daily plastic products, industrial containers, etc. Advanced blow molding masterbatch is used for blow molding coloring of ultra-thin products.
2) Depending on the carrier
Divided into PE, PP, PVC, PS, ABS, EVA, PC, PET, PEK, phenolic resin, epoxy resin, acrylic resin, unsaturated polyester resin, polyurethane, polyamide, fluororesin masterbatch, etc.
3) Depending on the function
Divided into anti-static, flame retardant, anti-aging, antibacterial, whitening and brightening, anti-reflection, weather resistance, extinction, pearlescent, imitation marble pattern (flow pattern), wood grain masterbatch, etc.
4) According to user usage
Divided into general color masterbatch and special color masterbatch. Low-melting PE masterbatches are often used as general-purpose masterbatches for coloring other resins other than carrier resins. The vast majority of formal color masterbatch enterprises in the world generally do not produce general-purpose color masterbatches. The general-purpose color masterbatches have a very narrow general range, and have poor technical indicators and economic benefits.
Universal masterbatches show different colors in different plastics, and the coloring effect is less predictable. The general color masterbatch affects the strength of the product, and the product is easily deformed and twisted, which is more obvious for engineering plastics. For universal color masterbatch, higher heat-resistant grade pigments are selected, which is costly and wasteful.
In the process of product processing, the special color masterbatch has significant advantages such as high concentration, good dispersibility and cleanliness. The heat-resistant grade of the special color masterbatch is generally compatible with the plastic used for the product. It can be used with confidence under normal temperature. It will cause different degrees of discoloration only when the temperature exceeds the normal range and the downtime is too long.
Lotus's MASTERBATCH RANGE (Click to Know More details)
* Color masterbatch
* Black masterbatch
* White masterbatch
* Additive masterbatch
* Filler masterbatch
2. Basic ingredients of masterbatch raw materials
1) Pigments
Pigment is the basic coloring component. It is best to pre-treat the surface of its fine particles with resin to prevent mutual flocculation and make it easy to disperse. In order to coat and mix evenly, a solvent that has affinity for the pigment and can dissolve the resin, such as o-dichlorobenzene, chlorobenzene, and xylene, is used. In the case where the resin is dissolved, the dispersion treatment of the pigment is performed, and then the solvent is recovered or removed.
2) Carrier resin
The carrier is the matrix of the masterbatch. At present, special color masterbatches use the same resin as the carrier, which can ensure the compatibility of the color masterbatch and the colored resin, which is conducive to better dispersion of the pigment. There are many types of carrier resins, such as polyethylene, random polypropylene, poly-1-butene, low molecular weight polypropylene, etc.
For polyolefin masterbatch, LLDPE or LDPE with high melt index is generally used as the carrier resin, which has good processing fluidity. It is blended with the colored resin to adjust the viscosity of the system, and plays the role of infiltrating and dispersing pigments. Minimize the amount of dispersant, even without dispersant, it can achieve good dispersing effect, and ensure that the performance of the colored product does not decline.
3) Dispersant
The dispersant wets and coats the pigment, so that the pigment can be dispersed evenly in the carrier and no longer agglomerate. Its melting point should be lower than that of the resin, and it has good compatibility with the resin and good affinity with the pigment. There are many types of dispersants, such as low molecular weight polyethylene wax, polyester, stearate, white oil, oxidized low molecular weight polyethylene and so on.
4) Additive
In addition to coloring, the masterbatch also adds flame retardants, antioxidants, antistatic agents, light stabilizers, etc., according to various requirements of users, and has various functions at the same time. Sometimes the user does not require it, but the masterbatch company will also suggest adding some additives according to the needs of the product.
3. Production equipment
Masterbatch production equipment includes grinding equipment, high and low speed kneaders, mixers, extrusion granulation equipment, etc. Grinding equipment includes sand mill, cone mill, colloid mill, high shear disperser, etc.
The kneader is decompressed and exhausted by vacuuming, volatiles are extracted and dehydrated; thermal working conditions are heated by heat transfer oil, steam heating or water cooling; the discharging methods are turning over the cylinder, discharging under the valve and discharging by screw; kneading The propeller adopts the variable frequency governor to adjust the speed.
The mixer is divided into two types: open-type rubber mixer and closed type rubber mixer. Extrusion granulation equipment includes single-screw extruder, twin-screw extruder (flat, flat, tapered, tapered), multi-screw extruder and non-screw extruders.
4. Application and Development of Color Masterbatch
In the plastics industry, the market demand for color masterbatch is concentrated in engineering plastics products (home appliances, automobiles), architectural plastics products (pipes, profiles), agricultural film products, plastic packaging products, etc. Home appliances, automobiles, and construction plastic products industries have high requirements for color masterbatches and a large amount of them, which has a driving effect on the development of color masterbatches.
Carbon black is widely used in wires, cables and tires, and the traditional carbon black is all changed to carbon black masterbatch, and its dosage occupies the first position in all color masterbatches. At present, domestic and foreign carbon black enterprises can not fully produce carbon black masterbatch. It is necessary to conduct research on tire carbon black masterbatch to improve the performance of its products, and the market potential is huge.
Fiber dope coloring is when the fiber is spinning, the color masterbatch is directly added to the fiber viscose or fiber resin, so that the pigment appears in the spinning, which is called internal fiber coloring. Pigments for fiber coloring masterbatches require bright color, good dispersibility, good thermal stability, light resistance, solvent resistance, acid and alkali resistance, bleach resistance, insoluble in water, and inorganic or organic pigments can be selected.
Lotus's MASTERBATCH RANGE (Click to Know More details)
* Color masterbatch
* Black masterbatch
* White masterbatch
* Additive masterbatch
* Filler masterbatch
