Nylons processing aids

Softener and processing aid for synthetic and natural fibres. Used as a spin finish on acrylic fibres and as a softener on both natural and synthetic fibres. It is particularly effective on acrylics but gives a pleasing soft silky handle on nylon. It is recommended as the softener for chlorine/resin finished wool to overcome the harsher handle resulting from such processes, to aid processing and give a lofty hand. 

Uses Plastics lubricant and processing aid pigment dispersant internal lubricant for PVC, nylon 6, nylon color cones. for adhesives, floor finishes, personal care, plastics, wax blends gellant for oils in personal care prods., pharmaceuticals film-former oil or fragrance encapsulator nonirritating abrasive emollient heat stabilizer food pkg. adhesives, coatings, paper/paperboard, cellophane, rubber articles, lubricants, textiles food-contact defoamer... 

Processing aides are available in many forms including low-viscosity liquid, powders, and pellets. They are used at a level of 0.1-2 percent by weight of the resin. Processing aids are often used with polyvinyl chloride, nylon, polycarbonate, and polyethylene terephthalate resins. 

Nylon is a highly crystalline material and, as such, plasticization can only occur at very low levels. Plasticizers used with nylon are typically sulfonamides, as these products are significantly more compatible with nylon than phthalates. Sulfonamides can be used as nylon flow aids, to retard degradation and to speed up processing. 

Acrawax C Prilled or Beaded is an effective lubricant, processing aid, slip additive and pigment disperssuit aid for most polymers Including ABS, PVC, polypropylene, nylon, acetal, polyethylene and thermoplastic polyester. 

Uses Internal mold release, process aid, and dispersant for ABS, nylon, PE, PS, PP, PBT, PVDF, PET... 

A rack and frame press uses heavy nylon cloth positioned in a wooden frame inside a rack. A measured amount of apple or other fmit mash is added from a hopper above the frame. The mash is leveled with a hand trowel and the edges of the nylon cloth are folded over the mash to encase it and create a cheese. The frame is removed, and a second rack is placed on top of the first cheese the process is repeated until a stack of cheeses is prepared. A hydrauhc ram then appHes gradually increa sing pressure on the stack and expresses the juice. A high yield of juice (80%) is obtained and no press aid is required. Because this process is labor intensive (17), it is mostly used for small farm and pilot-plant operations. 

Foi example, nylon pile fabrics, exhibiting higher moisture regain, have different traction characteristics under wet and dry conditions than do polypropylene-based materials. Effects of artificial turf fabric constmction on shoe traction ate given in Table 2. Especially effective in aiding fabric surface uniformity is texturing of the pile ribbon, a process available for the two principal pile materials nylon and polypropylene. 

Many modifiers and additives have been described for use with nylon composites, but generally a small amount, 0.05—1 wt %, of a lubricity aid, such as sodium or 2inc stearate (4) is added to enhance both resin flow during processing and removal from the mold after consoHdation. 

Ease or difficulty of opening depends on the properties of the materials, the design and seal pattern. Polyester, Nylon and polypropylene may give rise to difficulties, hence it may be necessary to incorporate a propagation aid feature such as a V-shaped notch, a cut or slit. The other alternative is a peelable seal. The seal strengths of permanent and peelable seals are measured by a similar process. 

Additives encompass a wide range of substances that aid processing or add value to the final product [6,7]. Found in virtually all plastics, most additives are incorporated into a resin family by the supplier as part of a proprietary package. For example, you can choose standard PC resin grades with additives for improved internal mold release, UV stabilization, and flame retardance, or nylon grades with additives to improve impact performance. 

The carbon fiber has to be coated with a suitable size to aid wetting out and this size can normally be a lower molecular weight version of the thermoplastie polymer applied in a suitable solvent, if possible water based, e.g. low molecular weight nylon, PC and PSU, whilst polyurethane type sizes are also useful. Care must be taken to choose a size that will withstand the processing conditions and for PEEK, it is necessary to use a polyimide size. 

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