Dispersing agents The role of dispersing agents A solid material dispersed in a liquid requires an additive to make the dispersion process easier and more stable – this is the role of the dispersing agent, or dispersant. Dispersants deflocculate solids and thus significantly reduce the viscosity of a dispersion or paste.
Crompton Corp. recently launched Polybond 3029MP, a maleated HDPE in a new smaller particle size—20-mesh micropellet—that’s said to improve dispersion. At 2%, it reportedly can double the flexural and tensile properties of 60% wood in HDPE.
PRAVR for Polyolefin's (PP/HDPE/LDPE) PRAVRTM dry pigments offer the polyolefin market all the desirable properties of phthalocyanine blue and green. In addition, they offer excellent resistance to crystallization and flocculation.
Wood Plastic Composite Coloring Pigment, Buy Various High Quality Wood Plastic Composite Coloring Pigment Products from Global Wood Plastic Composite Coloring Pigment .....>> pigments for wood plastic composite. Wood plastic composite is a perfect blend of wood fiber, organic-based pigments and high-density polyethylene (HDPE).
Aluminum Pigments. It is also common for dry powdered aluminum pigments to collect in the duct work of ventilation systems causing additional safety problems. In order to minimize the dust and explosion potential of aluminum pigments, they are often provided in a form in which a pigment binder or carrier holds the individual pigment flakes together.
Dispersion aid - Can be added to Masterbatch's to aid pigment dispersion and improve compatibility of pigments and fillers. Lubrication and Mould release - Used as a rubber processing aid /external Lubricant for PVC processing/ release agent; Compatibilizer and viscosity modifier.
Wood Plastic Composites (WPC), as a new type of composite material which flourished in recent years at home and abroad, and the industry continued the rapid growth momentum of the previous year, both in the domestic market and in the international market, are steadily rising. At present, the whole industry is in a new round of rapid growth period, is also WPC materials in the domestic start of ...
A number of organic pigments cause distortion in certain types of polyolefins, especially in HDPE. These pigments also enhance the shrinkage of polyolefins, particularly in the direction of the flow. 2. Dispersibility The dispersibility of an organic pigment which is to be incorporated in a polyolefin is of particular importance.
Plastic closures made from HDPE, LDPE, or PP are preferred to all others. Also preferred, are closure systems that contain no liners and leave no residual rings, or other attachments, on the bottle after the closure is removed. The use of closures that are the same color as the bottle is desirable. The use of PVC for closures or closure
Heat resistance of organic pigments #2. Dispersion Excellent pigment dispersion in the final product is essential to its performance. Defects caused by non-dispersed pigment particles (specs) can result in a severely lowered performance level. With good dispersion of pigments the following problems can be avoided.
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WPC is a new type of resilient material, with 55% of wood and about 40% of HDPE. Wood fibers are mainly from wood cutting and sawdust. Resin is mixed wiht HDPE with high quality addictive and high durability pigment
Colorant Chromatics™ Dispersed Pigments for PTFE. Colorant Chromatics™ uses advanced techniques to achieve uniform dispersion of pigments into the lubricants used in PTFE extrusion applications, such as tubing, PTFE tape and PTFE yarns. These formulations enable a clean, controlled and precise coloration process and eliminate the additional step of adding dry powder pigments.
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We favor MLDPE or LLDPE with melt indices below 20 MI in order for our customers to achieve the optimal homogeneity of the masterbatch into the HDPE resin. 3) Poor dispersion: for masterbatch formulators, besides the proper selection of materials, nothing is more critical than achieving the finest dispersion of the additives in the carrier resin. The reason is that miniscule agglomerates of black pigment or additives in the pipe wall can act like grains of sand and cause what is commonly ...
wpc hdpe pvc pigment Plastic Lumber Possibilities - Green Building Solutions As a substitute for treated lumber, plastic lumber products resist insects, rot, recycled plastic may use specialty additives/pigments to improve aesthetics, This may explain why most of the extruded plastics or WPC boards produced rely on continuously extruded, structurally foamed high-density polyethylene (HDPE).
LDPE PVC HDPE Product Masstone (1% Pigment) 1:20 TiO2 Tint Film Dispersion Masstone (1% Pigment) 1:20 TiO2 Tint Heat Stablity (1% pigment) Competitive Grade Control Control Control Control Control 300-320oC DCC 7354 Light yellow shade ∆E* 1.68 Comparable hue ∆E* 0.64 Similar Dispersion Light & yellow shade ∆E* 2.75 Comparable hue
excellent blending and dispersion, as well as lubricating process enhancements for the manufacturer. In some cases, they act as compatibilizers or alloying agents while providing excellent surface finish and mold release. Regardless of your base polymer, or type of wood or natural fiber being used, Struktol has a WPC additive for your compound.
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Today's pearl pigments have the thermal and chemical stability to survive polymer processing and resist weathering. They do not bleed or bloom. But they are somewhat more complex to use than other colorants. Compounders, molders, and extruders who lack a clear grasp of how these pigments function can run into problems in formulating, mixing,...