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Tuesday, August 11, 2020 | History

3 edition of Adhesive evaluation of water-soluble LARC-TPI found in the catalog.

Adhesive evaluation of water-soluble LARC-TPI

Adhesive evaluation of water-soluble LARC-TPI

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  • 29 Currently reading

Published by National Aeronautics and Space Administration, Langley Research Center, For sale by the National Technical Information Service in Hampton, Va, [Springfield, Va .
Written in English

    Subjects:
  • Polyimides.,
  • Adhesives.

  • Edition Notes

    Other titlesAdhesive evaluation of water soluble LARC-TPI.
    StatementDonald J. Progar and Roscoe A. Pike.
    SeriesNASA technical memorandum -- 89152.
    ContributionsPike, Roscoe A., Langley Research Center.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL15297228M

    Apply Liquifilm Water Soluble Adhesive to inside of pipe. Thoroughly coat the entire circumference of the pipe surface where film is to be placed. Trace and Cut. Trace pipe’s inner diameter by pressing Liquifilm along pipe edge, creating an impression. Then fold to form a 90° angle. Cut Liquifilm in a circle around the impression. An adhesive, or glue, is a mixture, either in liquid or semi-liquid form that is used to bond one surface to another. Most all adhesives are polymer based, and are made from either natural or synthetic sources. Adhesives are also specially formulated for specific applications, depending on the type of adhesive and the industry you are working in.

      Solutions of % methyl cellulose can be used as a poultice to draw up water stains, water soluble adhesives, etc. It may also be used with Fuller's Earth (Baker , 55). When used as poultice or in any function where controlling the degree of wetness is important, methyl cellulose is a more surface active cellulose ether compared to.   LaRC-TPI, an aromatic thermoplastic polyimide, was exposed to oxygen, argon and ammonia plasmas as pretreatments for adhesive bonding. Chemical changes which occurred in the surface as a result of the plasma treatments were investigated using x-ray photoelectron spectroscopy (XPS) and infrared reflection-absorption spectroscopy (IR-RAS).

    ASTM's cement and concrete standards are instrumental in the evaluation and testing of concrete, cement, and aggregates. Concrete can have different properties depending upon the mixture that is used in creating it, which contains cement, chemical admixtures, and aggregates. Water-based dispersion adhesives consist of solid adhesive dispersed in an aqueous phase. These adhesives contain water soluble additives such as surfactants, emulsifiers, and protective colloids that act as links between the solid adhesive particles and the aqueous phase.


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Adhesive evaluation of water-soluble LARC-TPI Download PDF EPUB FB2

Adhesive evaluation of water-soluble NLRC-TPI D.J. Progar* and R.A. Piket (*NASA Langley Research CenterPUnited Technologies Research Center, USA) A water-soluble version of the linear thermoplastic polyimide LARC-TPI, prepared by United Technologies Research Center, East Hartford, CT, USA from the polyamic-acid/ diglyme solution commercially marketed by Mitsui Toatsu Cited by: A water-soluble version of the linear thermoplastic polyimide LARC-TPI, prepared by United Technologies Research Center, East Hartford, CT, USA from the polyamic-acid/ diglyme solution commercially marketed by Mitsui Toatsu Chemicals Incorporated (MTCI), Tokyo, Japan, was evaluated as a high temperature thermoplastic by:   Adhesive evaluation of LARC-TPI and a water-soluble version of LARC-TPI D.J.

Progar (NASA Langley Research Center, USA) A linear thermoplastic polyimide, -TPI, developed several years ago at NASA Langley Research Center, showed promise as a high temperature adhesive for application in aircraft and spacecraft based on the mate/ial's toughness, flexibility, good thermal Cited by: 8.

The water-soluble version is highly attractive because of the safety requirements involved with organic solvents presently used for polyimide materials. This report details the results of a study to evaluate the two LARC-TPI materials as high temperature thermoplastic adhesives and primers for bonding titanium (6Al-4V) by: 8.

Adhesive evaluation of LARC-TPI and a water-soluble version of LARC-TPI. By D. Progar. Abstract. The results of a study to evaluate two Langley Research Center thermoplastic polimide (TPI) materials, identified as TPI/MTC for the material from Mitsui Toatsu Chemicals Inc.

and TPI/H2O for the material from United Technologies Research Center Author: D. Progar. Adhesive evaluation of water-soluble LARC-TPI. Hampton, Va.: [Springfield, Va: National Aeronautics and Space Administration, Langley Research Center ; For sale by the National Technical Information Service.

MLA Citation. Progar, Donald J. and Pike, Roscoe A. and Langley Research Center. Adhesive evaluation of water-soluble LARC-TPI. By Roscoe A. Pike and Donald J. Progar. Get PDF (1, KB) Abstract. The water-soluble polyimide, identified as TPI(MTC)/H2O, was evaluated as a high temperature thermoplastic adhesive for bonding Ti-6Al-4V and comparing those results primarily with results reported in earlier work with the.

Adhesive evaluation of water-soluble LARC-TPI. By D. Progar and Roscoe A. Pike. Abstract. The water-soluble polyimide, identified as TPI(MTC)/H2O, was evaluated as a high temperature thermoplastic adhesive for bonding Ti-6Al-4V and comparing those results primarily with results reported in earlier work with the polyamic-acid/diglyme.

Read the latest articles of International Journal of Adhesion and Adhesives atElsevier’s leading platform of peer-reviewed scholarly literature. Thermoplastic adhesives based on 4,4'-isophthaloyldiphthalic anhydride (IDPA) [microform] / Donald J.

Progar, Terry L. Clair and J. Richard Pratt National Aeronautics and Space Administration, Langley Research Center Hampton, Va Australian/Harvard Citation. Progar, Donald J.

& St. Clair, Terry L. & Pratt, J. Richard. COVID Resources. Reliable information about the coronavirus (COVID) is available from the World Health Organization (current situation, international travel).Numerous and frequently-updated resource results are available from this ’s WebJunction has pulled together information and resources to assist library staff as they consider how to handle coronavirus.

Get this from a library. Adhesive evaluation of LARC-TPI and a water-soluble version of LARC-TPI. [Donald J Progar; Langley Research Center.]. Adhesive evaluation of water-soluble LARC-TPI. Article. Jan ; Donald J. Progar. Roscoe A.

Pike. A water-soluble version of the linear thermoplastic polyimide LARC-TPI, prepared by United. Thermomechanical Analysis (TMA) and torsional braid techniques were used to determine glass transition temperature.

The adhesive's strength, as determined by simple lap shear tests, was used to evaluate the effects of long term thermal exposure (up to hrs) at deg C and a hour water-boil. Publication Date: Janu ADHESIVE EVALUATION OF WATER-SOLUBLE LARC-TPI DONALD J PROGAR AND ROSCOE A a PIKE (bAS4-TB 15;) LDHESIVE EVALUAIIIGI OP bi 37 52 SAIEB-SOLUBLE LABC-XPX (EASA) 29 p Avail: bf1S EC bO3/~2 PO1 CSCL 11A Unclas H1/27 JUNE National Aeronautics and Space Administration Langley Research Center Hampton, Virginia Effects of 45°F continuous exposure upon selected adhesives demonstrated that LARC-TPI bonds were stable to at le hours.

PPQ in the same high temperature environment exhibited significant loss of bond strength between 5, hours exposure. Adhesive evaluation of LARC-TPI and a water-soluble version of LARC-TPI The results of a study to evaluate two Langley Research Center thermoplastic polimide (TPI) materials, identified as TPI/MTC for the material from Mitsui Toatsu Chemicals Inc.

and TPI/H2O for the material from United Technologies Research Center, as high temperature thermoplastic adhesives and primers for bonding titanium. Water-based (or more commonly referred to as waterborne) adhesives are typically formulated from either: Natural Polymers – from vegetable sources (e.g.

dextrins, starches), protein sources (e.g. casein, blood, fish, soybean, milk albumen), and animal (e.g. hides, bones), or Soluble Synthetic Polymers – from polymers including: polyvinyl alcohol, cellulose ethers, methylcellulose. This work was intended to improve the adhesion properties of an available medical water-soluble pressure-sensitive adhesive (PSA) through the addition of cellulose ethers or polyvinylpyrrolidone (PVP).

The adhesion properties were evaluated by means of peel adhesion test and creep resistance test. USA USA USA USA US A US A US A US A US A US A US A US A US A US A US A US A Authority US United States Prior art keywords polyethyleneimine polyvinyl alcohol acids acid water Prior art date Legal status (The legal status is an assumption and.

Adhesive obstruction may occur at any time after surgery, about 20% of the obstructions appeared more than 10 years after the initial abdominal operation.

Gastrografin (Schering AG, Berlin, Germany), a water-soluble contrast medium, has been found useful in the management of adhesive small bowel obstruction.

Water-soluble pressure-sensitive adhesives (PSA) based on acrylic acid and carboxymethyl starch (CMS) have been prepared. The tack and peel adhesion to various paper types (newsprint, hygienic.

Water-soluble pressure-sensitive adhesives (PSA) based on acrylic acid and carboxymethyl starch (CMS) have been prepared. The tack and peel adhesion to various paper types (newsprint, hygienic, packing, fax and art paper) as well as dynamic shear adhesion at higher temperatures (70– °C) have been tested with the aim of applying such PSA in a form of double .