Materials and equipment needed Sample Clauses

Materials and equipment needed. ⮚ Nano-enabled paints and coatings In the case of paint materials, in order to represent commercial product, nanoparticles of interest could be TiO2, ZnO or SiO2 for example. For paints, the coating needs to be applied on test panels. It is really important to achieve a uniform coating to perform these tests. Different panels are available. In function of the formulation, specific type of panel has to be selected: - Steel (S-16) - Uniformly blanked from 20-gage auto body sheet steel and dull finished for good adhesion of the coating to the metal. 100 mm square with rounded corners and a
Sample 1
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Materials and equipment needed. The textile used will have the following composition: PES/Ly, mixture of polyester (90%, PES 167/144 BIELTEX) and elastane (10%, 40 DN CREORA). The nanoparticles are incorporated in the fabrics to provide bactericidal and odorless properties. Here, three types of coatings containing nanoparticles will be applied to the described textile: - Impregnation with a mixture of TiO2 nanoparticles and AgCl, - Impregnation with two different sized Ag nanoparticles. It should be mentioned that other additives (surfactants, binders…) are included in the impregnation solutions. Nanoparticles are applied following a padding process. Briefly, first the samples are dipped into a tank containing the aqueous nanoparticle dispersions, and then the samples are drained in a foulard to a pressure of 4 kg/m2. Finally, the fabric is dried and cured at temperatures ranging from 140-160 ˚C. Regarding raw nanomaterial, both morphology and size will be characterized by means of transmission electron microscopy (TEM). The nanoparticles will be also analyzed by UV-vis spectroscopy, dynamic light scattering (DLS) and FT-IR.
Sample 1
Materials and equipment needed. In this study we used different polymers. PolyPropylene (PP) is a semi crystalline thermoplastic resin. PolyAmide (PA) is containing amide functions; and PolyUrethane (PU) is a chain of organic units jointed by carbonate (urethane) links. This three kind of polymers will be studied pures, or dopped with nanoparticle : nano-silica (-SiO2) or nano-clays –Montmorillonite- (-MMT). The following tables give an overview of these components. Tableau 1: description of nanoparticles used in polymers. Nanofiler Polymer Origin Polypropylene Polyamide Polyurethane Nano Silica (SiO2) Aerosil 974 Hydrophobic : surface modified woth dimethyl dichlorosilane Aerosil 200 Hydrophilic Industrial - DEGUSSA Layered Silicates (MMT) Dellite 72T Ditallowdimethyl amonium ion Dellite 43B Tallowbenzildimethil amonium ion Industrial - LAVIOSA ⮚ Preparation of starting materials: mechanical abrasion of macro-size samples (i.e. production of small size fractions to simulate use of products due to abrasion) Mechanical erosion of the polymers will be performed to simulate ageing during use of products due to abrasion and then generate new type of dust. Polymer plaques (several centimeter long and large) will be used as starting materials. Usure of polymer is simulated by grating nine grams of each polymer with a metallic grate of 200 mm size producing. Mechanical procedure tested is implemented manually to avoid increase of temperature during abrasion. Mortar grinding in ceramic bawl for half an hour will also be performed after grating procedure. Mortar grinding will be used with a large gap between the rotating agate part and the fixed container. 2mm gap is selected. The aim is not to crush the samples, but to gently separate particles that are interlinked or interconnected (“Jackstraws” effect). Figure 3: Diagram of the mortar set-up to separate particles of polymer that are interlinked or interconnected All apparatus are treated with alcohol to decrease at maximum the bacterial contamination. The fraction smaller than 20 μm produced by abrasion is generally low. The objective is to produce a minimum of 200 mg of dust <20 μm for each sample. Polymer shavings will be suspended in ethanol, and sieved with a sieve of 20μm mesh. The size distribution of fine particles (<20μm) will be measured in ethanol to prevent aggregation and using laser diffraction (static light scattering SLS). The structure of the fine particles before and after ageing experiments will be characterized by means of X...
Sample 1

Related to Materials and equipment needed

  • Materials and Equipment ‌ Material means property that may be consumed or expended during performance, component parts of a higher assembly, or items that lose their individual identity through incorporation into an end item. Equipment means a tangible item that is functionally complete for its intended purpose, durable, nonexpendable, and needed for performance. Materials and Equipment shall be priced in accordance with the terms of the task order award, contract type, and applicable FAR and agency-specific regulatory supplements. Unless otherwise directed by task order terms and conditions, the Contractor may apply indirect costs to materials and equipment consistent with the Contractor’s usual accounting practices.

  • Services, Materials, and Equipment Unless otherwise specified, the Contractor shall provide and assume full responsibility for all services, materials, equipment, labor, transportation, construction equipment and machinery, tools, appliances, fuel, power, light, heat, telephone, water, sanitary facilities, temporary facilities, and all other facilities, incidentals, and services necessary for the construction, performance, testing, start-up, inspection and completion of the Work.

  • Equipment and Materials Contractor at its sole cost and expense shall provide and furnish all tools, labor, materials, equipment, transportation services and any other items (collectively, "Equipment") which are required or necessary to perform the Services in a manner which is consistent with generally accepted standards of the profession for similar services. Notwithstanding the foregoing, District shall not be responsible for any damages to persons or property as a result of the use, misuse or failure of any Equipment used by Contractor of the Contracted Parties, even if such Equipment is furnished, rented or loaned to Contractor or the Contracted Parties by District. Furthermore, any Equipment or workmanship that does not conform to the regulations of this Agreement may be rejected by District and in such case must be promptly remedied or replaced by Contractor at no additional cost to District and subject to District’s reasonable satisfaction.

  • Materials and Improvements Title to materials, improvements, and other property required of PURCHASER by this contract shall vest in and become the property of STATE at the time such are furnished by PURCHASER and accepted by STATE. Only materials, improvements, and property free and clear of liens, claims, and encumbrances shall be furnished by PURCHASER. All existing improvements located on State land, and any improvements placed on State land by PURCHASER which become the property of STATE, shall be safeguarded by PURCHASER. If such improvements are injured, damaged, or removed from the areas of operations by PURCHASER or by contractors of PURCHASER, such improvements shall be repaired (or replaced, in the event of removal,) as soon as possible by PURCHASER, without cost to STATE.

  • Materials and Supplies The cost of materials and supplies is allowable. Purchases should be charged at their actual prices after deducting all cash discounts, trade discounts, rebates, and allowances received. Withdrawals from general stores or stockrooms should be charged at cost under any recognized method of pricing, consistently applied. Incoming transportation charges are a proper part of materials and supply costs.

  • MATERIALS AND WORKMANSHIP Unless otherwise specified, all materials and equipment incorporated in the work under the Contract shall be new. All workmanship shall be first class and by persons qualified in the respective trades.

  • Quality of Materials and Workmanship Unless otherwise specified, all materials shall be new, and both workmanship and materials shall be of good quality. The Contractor shall, if required, furnish satisfactory evidence as to the kind and quality of materials and work. The burden of proof is on the Contractor.

  • Selection of Subcontractors, Procurement of Materials and Leasing of Equipment The contractor shall not discriminate on the grounds of race, color, religion, sex, national origin, age or disability in the selection and retention of subcontractors, including procurement of materials and leases of equipment. The contractor shall take all necessary and reasonable steps to ensure nondiscrimination in the administration of this contract.

  • Personnel Equipment and Material Engineer shall furnish and maintain, at its own expense, quarters for the performance of all Engineering Services, and adequate and sufficient personnel and equipment to perform the Engineering Services as required. All employees of Engineer shall have such knowledge and experience as will enable them to perform the duties assigned to them. Any employee of Engineer who, in the reasonable opinion of County, is incompetent or whose conduct becomes detrimental to the Engineering Services shall immediately be removed from association with the Project when so instructed by County. Engineer certifies that it presently has adequate qualified personnel in its employment for performance of the Engineering Services required under this Contract, or will obtain such personnel from sources other than County. Engineer may not change the Project Manager without prior written consent of County.

  • Solicitations for Subcontractors, Including Procurements of Materials and Equipment In all solicitations either by competitive bidding or negotiation made by the contractor for work to be performed under a subcontract, including procurements of materials or leases of equipment, each potential subcontractor or supplier shall be notified by the contractor of the contractor's obligations under this contract and the Regulations relative to nondiscrimination on the grounds of race, color, or national origin, sex, age, and disability/handicap.

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