Angebote zu "Resins" (15 Treffer)

Kategorien

Shops

Synthesis of Novel Polyurethanes
71,90 € *
ggf. zzgl. Versand

Polymers are enchantment for modern mechanized civilization because of the versatility of their applications. These materials can be tailored as per desired applications. However polymer science as a coherent subject is barely few decades old. The importance of polymers had increased because of light weight, low cost, excellent chemical resistance, anti corrosive nature and easy processbility. Polyurethane is the most versatile group of polymers next to unsaturated polyester resins. These materials are important block co-polymers. Properties of end product can be designed according to it's application. Due to potential large volume of applications combined with high versatility in the properties, these materials require a thorough understanding of synthesis and properties as well as update of knowledge. Polyol synthesis from renewable resources and their possibility for industrial polyurethane application has gained a considerable attention in recent times.The polymer known as polyurethanes are widely used in the fields of daily life due to their excellent wear resistance, toughness, mechanical properties and chemical resistance.

Anbieter: Dodax
Stand: 03.08.2020
Zum Angebot
Sustainable Composite Materials
79,00 € *
ggf. zzgl. Versand

The past fifteen years have witnessed a tremendous interest in the search for alternative to fossil origin materials. The search has been motivated by the realisation that fossil reserves are finite, and their use poses serious environmental impact. The search for the alternative non fossil origin materials has resulted in the exploitation of plant-based materials which offer potentially zero greenhouse gas emissions. Cashew nut shell liquid (CNSL) is phenolic based natural oil extracted from cashew nut processing plants. The oil consist of four monomeric components each differing in side chain saturation. Polymerisation of the crude CNSL is accomplished in two stages resulting in either resol or novolak type resins. CNSL can be polymerised in acidic and alkaline media to produce neat cast components or mixed with plant fibres to produce composites that exhibit properties similar to those of fossil-based polymers reinforced with glass fibres. The development of plant resourced materials into industrial products can contribute to a healthy ecosystem while their low cost and high performance fulfils the economic interest of industries.

Anbieter: Dodax
Stand: 03.08.2020
Zum Angebot
Biosorbent from Neem (Azadirachta indica) leaves
71,90 € *
ggf. zzgl. Versand

Removal of organic and inorganic pollutants from wastewater by adsorption on activated carbon and synthetic resins has been widely studied. Though activated carbon is an ideal adsorbent for organic matter due to its organophillic character, high cost of preparation and regeneration is a limiting factor for their large-scale use in wastewater treatment. This has prompted the use of many novel materials as adsorbents. The present work was aimed at developing a low cost adsorbent from the mature leaves of the Neem (Azadirachta indica)tree. The objectives were to convert dry, mature Neem leaves into a powder (Neem Leaf Powder, NLP), characterize the adsorbent (NLP) by spectroscopic and other methods, test the effectiveness of NLP as an adsorbent for removal of micro-pollutants such as dyes (methylene blue, Congo red, brilliant green) and metal ions (Cd(II), Cr(VI) and Pb(II)) from an aqueous medium, and determine the influence of various factors such as concentration, pH, temperature, and agitation time, etc., on adsorption. Both batch and column adsorption processes were applied with significant achievements.

Anbieter: Dodax
Stand: 03.08.2020
Zum Angebot
Morphological Changes in Banana Fiber Composites
39,90 € *
ggf. zzgl. Versand

Composites have become so vital due to their high effective stiffness and strength, availability, low cost, specific strength, better dimensional stability and mechanical properties, eco-friendly and biodegradable as compared to plastics and fibers. Among all the property now a day's researchers concern is more on the biodegradable properties due to strict environmental rules and regulations. However always the non-biodegradable composites have more strength and stability, researchers adding various additives, blending fibers and resins which are biodegradable to bring the strength and stability on par with non-biodegradable composites.

Anbieter: Dodax
Stand: 03.08.2020
Zum Angebot
Properties Evaluation of Softwood by Polymers a...
82,90 € *
ggf. zzgl. Versand

Development of wood polymer composites (WPC) is a very promising approach to overcome most of the disadvantageous properties of wood products viz. poor mechanical and dimensional stability, susceptibility to fungal attack, weathering etc. To substitute the hard wood product, suitable technologies have been developed to modify softwood to meet specific end-use requirements. Various vinyl monomers and copolymers or thermosetting resin in combination with different types of cross linking agents, flame retarding agents have been used to improve the properties of wood. Nanotechnology is a new area of science and technology which opens up new opportunities to develop wood based products with desired properties. The bio-based resins obtained from renewable feedstock have been widely utilized by taking the advantages of easy availability, renewable nature and low cost. The green route of modification of wood is widely encouraged. With the progress of technological development, now it is possible to avoid the hazardous influence of organic solvents by using water as solvent or diluents for modification of wood. WPC has got tremendous scope for use in diverse areas of applications.

Anbieter: Dodax
Stand: 03.08.2020
Zum Angebot
Phenolic Resins
320,99 € *
ggf. zzgl. Versand

The salient and versatile features of phenolic resins provide favorable comparisons between them and other thermosetting resins as well as thermoplastic products: thermal behavior, high strength level, long term thermal and mechanical stability, fire, smoke and low toxicity characteristics, electrical and thermal insulating capabilities, cost performance characteristics. The technical content of the book describes significant new phenolic resin chemistry, transformations and recent mechanistic pathways of resole and novolak cure. A vastly expanded treatment of selected application areas consists of wood composites, insulation/textile felts, molding compounds, paper/fabric impregnation, foundry, abrasives, friction and refractory. New applications with up-to-date developments include high performance and advanced composites, imaging/photoresist and carbon/graphite areas. Also included in detail: Standardized test methods important for ISO 9001 ff certification.

Anbieter: Dodax
Stand: 03.08.2020
Zum Angebot
Principles of Paint Formulation
154,00 CHF *
ggf. zzgl. Versand

1 Getting the basics right.- 1.1 Introduction.- 1.2 Availability of raw material data.- 1.3 Clarifying the objective.- 1.4 Identifying formulating constraints.- 1.5 Use of standard formulation format.- 1.5.1 Costing laboratory formulations.- 1.5.2 Manufacturing formulations.- 1.6 Use of test schedules.- 1.7 Understanding the costing system.- 1.7.1 Raw material costs.- 1.7.2 Manufacturing costs.- 1.7.3 Container and filling costs.- 1.8 Know the competition.- 2 Establishing a structured development programme.- 2.1 Introduction.- 2.2 Raw material substitution.- 2.3 Cost reduction.- 2.4 Product improvement.- 2.5 Matching the competition.- 2.6 New products.- 2.6.1 Project 1.- 2.6.2 Project 2.- 2.7 New classes of raw material.- 2.8 New technology.- 3 Raw materials.- 3.1 Introduction.- 3.2 Resins.- 3.2.1 General.- 3.2.2 Types of resins available.- 3.2.3 Selection of resins.- 3.3 Pigments.- 3.3.1 General.- 3.3.2 White pigments (titanium dioxide).- 3.3.3 Coloured pigments.- 3.3.4 Extenders.- 3.3.5 Corrosion inhibiting pigments.- 3.4 Solvents, thinners and diluents.- 3.4.1 General.- 3.4.2 Solvents in air dry finishes.- 3.4.3 Solvents in cross-linked and stoving finishes.- 3.4.4 Solvents in aqueous finishes.- 3.5 Rheology modifiers.- 3.5.1 General.- 3.5.2 Solvent-thinned products.- 3.5.3 Water-thinned products.- 3.6 Additives.- 3.6.1 General.- 3.6.2 Dispersing/wetting agents.- 3.6.3 Driers.- 3.6.4 Preservatives/biocides.- 3.6.5 Insecticides.- 3.6.6 Can corrosion inhibitors.- 3.6.7 Flash rust inhibitors.- 3.6.8 UV absorbers.- 3.6.9 Reodorants.- 3.6.10 Anti-skin.- 3.6.11 Anti-flood/float.- 3.6.12 Anti-foam.- 3.6.13 Anti-gassing.- 3.6.14 Anti-static.- 3.6.15 Anti-freeze.- 4 Volume relationships.- 4.1 Introduction.- 4.2 The CPVC concept.- 4.3 Establishing the CPVC.- 4.3.1 The CPVC cell method.- 4.3.2 The oil absorption method.- 4.3.3 Effect of latex vehicles on CPVC.- 4.3.4 Other means for CPVC determination.- 4.4 The relationship of PVC to CPVC.- 4.5 The porosity concept.- 4.5.1 Effect of porosity on hiding power.- 4.6 Use in formulation.- 4.6.1 Spacing extenders.- 4.6.2 Modifying a standard product.- 4.6.3 Latex paints.- 4.6.4 Flat latex paints.- 4.6.5 Effect of relative BPI.- 4.6.6 Matching a competitive sample.- 4.7 Summary.- References.- 5 Dry hiding¿an alternative to titanium dioxide.- 5.1 Introduction.- 5.2 Available technologies.- 5.3 Relevance of packing considerations.- 5.4 Pittment.- 5.5 Spindrift.- 5.6 Plastic pigment.- 5.7 Opaque polymer.- 6 Computer techniques.- 6.1 Introduction.- 6.2 Computerised process control.- 6.3 Colour matching.- 6.4 Formulation and costing programmes.- 6.4.1 Raw material file.- 6.4.2 Formulation file.- 6.4.3 Calculation file.- 6.4.4 Reformulation programmes.- 6.5 Experimental designs.- 6.5.1 Randomisation.- 6.5.2 Randomised block.- 6.5.3 Latin square.- 6.5.4 Factorial experiments.- 6.5.5 Fractional factorial design.- 6.5.6 Box ¿ Behnken.- 6.6 Experimental design with mixtures.- 6.6.1 Three component mixture design.- 6.6.2 Four component mixture design.- 6.6.3 Simplex mixture screening design.- 6.7 Theoretical approach to formulation.- References.- 7 Design for bulk manufacture.- 7.1 Introduction.- 7.1.1 The basic problem.- 7.1.2 Conditions for dispersion.- 7.1.3 Particulate solids.- 7.1.4 The continuous phase.- 7.2 Stages of bulk manufacture.- 7.2.1 Introduction.- 7.2.2 Stable base formulation.- 7.2.3 Initial dispersion formulation.- 7.2.4 Let-down stages.- 7.2.5 Completion.- 7.3 Types of dispersion equipment.- 7.3.1 Introduction.- 7.3.2 Ball mills.- 7.3.3 Attritors.- 7.3.4 Batch bead mills.- 7.3.5 High shear stress mixers.- 7.3.6 Low shear stress mixers.- 7.3.7 Other types of mixers.- 7.3.8 Continuous mills.- 7.3.9 Sand mills.- 7.4 Formulating for optimum wetting and dispersion.- 7.4.1 Introduction.- 7.4.2 Ball mills.- 7.4.3 Attritors.- 7.4.4 Batch bead mills.- 7.4.5 High shear stress mixers.- 7.4.6 Low shear stress mixers.- 7.4.7 Other high speed mixers.- 7.4.8 Continuous mills.- 7.5 Choice of equipment.- 7.5.1 Introduction.- 7.5.2 Emulsion paints.- 7.5.3 Alkyd gloss.- 7.5.4 Stoving enamels.- 7.5.5 High viscosity types.- 7.5.6 Speciality types.- 8 Selection of test methods.- 8.1 Introduction.- 8.1.1 Sources of variability.- 8.1.2 Towards greater realism.- 8.1.3 Choice of method.- 8.2

Anbieter: Orell Fuessli CH
Stand: 03.08.2020
Zum Angebot
Paint and Coatings Industry
226,00 CHF *
ggf. zzgl. Versand

Some of the futuristic applications are nanotubes for electrically conductive coatings and to increase the rate of reaction of thermoset resins; organosilane dendrimer coatings; buckyball coatings for machine parts; and metals for conductive coatings in inks. The technology is limited to substantially specialized applications due to the high cost per unit volume needed to reduce the size of the particles and the need to add surface modifiers to prevent the particles from agglomerating. Recent research efforts focus primarily on the functionalization of the particle surface of the nanoparticles to make them more compatible with the coating resin systems, so that easy dispersion, low viscosity, and covalent bonding are provided between the particles and the resins.

Anbieter: Orell Fuessli CH
Stand: 03.08.2020
Zum Angebot
Synthesis of Novel Polyurethanes
116,00 CHF *
ggf. zzgl. Versand

Polymers are enchantment for modern mechanized civilization because of the versatility of their applications. These materials can be tailored as per desired applications. However polymer science as a coherent subject is barely few decades old. The importance of polymers had increased because of light weight, low cost, excellent chemical resistance, anti corrosive nature and easy processbility. Polyurethane is the most versatile group of polymers next to unsaturated polyester resins. These materials are important block co-polymers. Properties of end product can be designed according to it's application. Due to potential large volume of applications combined with high versatility in the properties, these materials require a thorough understanding of synthesis and properties as well as update of knowledge. Polyol synthesis from renewable resources and their possibility for industrial polyurethane application has gained a considerable attention in recent times.The polymer known as polyurethanes are widely used in the fields of daily life due to their excellent wear resistance, toughness, mechanical properties and chemical resistance.

Anbieter: Orell Fuessli CH
Stand: 03.08.2020
Zum Angebot