Selecting Plasticizers & Tackifiers for Adhesives and
Select the right plasticizer & tackifier/resin for adhesives, coatings & sealants among the various materials available keeping in mind the regulatory concerns.; Learn how to translate your test results into measuring compatibility of your plasticizers & tackifiers using theoritical (solubility parameters, Kraskopf’s radius, Flory Huggens interaction parameter...) and practical (loop test
Selecting Plasticizers for Adhesives and Sealants
Plasticizers may also be one of the least expensive additives used in adhesives and sealants, and they can be used in relatively large concentrations depending on the application and formulation (up to 100 parts by weight per 100 parts of the base polymer). For these reasons, they are sometimes used as extenders for cost-reducing purposes.
Plasticizer use in Adhesives and Sealants - Chemceed
A plasticizer is an additive used to increase flexibility or workability of a polymer system. Plasticizers typically affect the viscosity, lower the glass transition temperature, and lower the elastic modulus of a product. Phthalates and terephthalates are an example of effective plasticizer chemistries used in caulks and sealants.
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Best Adhesive for Plastic | Plastic Adhesive - Permabond
UV plastic adhesives can provide invisible bonds which are often desirable on clear plastics. Dual cure grades are available for colored plastics. Cyanoacrylates also provide clear bonds. For best results on dark colored plastics when using a cyanoacrylate adhesive, choose a low odor, non-blooming grade. Application and Cure process
- What is a plasticizer used for?
- Plasticizers have been used to give polymers a permanent adhesive character (pressure sensitivity), or to regulate their adhesion-cohesion balance to achieve removability. For example, plasticizers can be incorporated into peelable pressure-sensitive adhesive to soften the adhesive, and thus improve peelability and clean removal.
- What types of plasticizers are used in adhesives & sealants?
- Oils (like paraffinic, naphthenic, and aromatic) are used mainly as plasticizers in non-polar adhesives. These are generally used in the hot-melt adhesives and sealants. Base polymers include the mid-blocks of styrene-butadiene copolymers and polyolefin-based adhesives. Polymeric plasticizers are used frequently in adhesives and sealants.
- How do I choose a plasticizer?
- The key evaluation parameters in choosing a plasticizer are: Plasticizers will reduce the melt viscosity of hot-melt adhesives and 100% solids adhesives & sealants. However, the addition of certain plasticizers to a polymeric emulsion will usually result in increased viscosity.
- Do plasticizers reduce the viscosity of adhesives & sealants?
- Plasticizers will reduce the melt viscosity of hot-melt adhesives and 100% solids adhesives & sealants. However, the addition of certain plasticizers to a polymeric emulsion will usually result in increased viscosity. This effect can be used to formulate a waterborne adhesive having greater coating thickness build-up.
- Why are plasticizers used as extenders?
- Plasticizers may also be one of the least expensive additives used in adhesives and sealants, and they can be used in relatively large concentrations depending on the application and formulation (up to 100 parts by weight per 100 parts of the base polymer). For these reasons, they are sometimes used as extenders for cost-reducing purposes.
- Why should you choose a plasticizer that is compatible with polymer?
- By choosing a plasticizer that is compatible with the polymer, it protects the plasticizer for leaching out of the product and thus losing the benefits of plasticization. Plasticizer permanence, or resistance to migration out of the adhesive or sealant, plays a role in the longevity of a product.
