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Outgassing thermal curing

Jansen and co-workers [86] have evaluated temperature-controlled outgassing processes of plastics and rubbers using both off-line and on-line TD-GC-FTIR-MS. Decomposition of polyesterurethanes by means of TG-Tenax off-line sampling followed by TD-GC-FTIR-MS revealed C02, H20, tetrahydrofurane, cyclopentanone, dicarbonic acid, aliphatic diols and esters [86]. The same authors have also described the detection of polychlorinated biphenyls (PCB) in 2,4-dichlorobenzoylperoxide cured silicone rubbers after outgassing products of a rubber silicone part obtained after desorption for 10 minutes at 200 °C in the thermal desorption cold-trap and subsequent analysis by means of TD-GC-MS. Using a mass range of 290-294 Da the MS can be used as a selective detector for these substances. [Pg.35]

Product Name/ Supplier Description Viscosity (cps) Shelf life (-40°C), Pot Life (25 C) Cure Schedule hr °C Hardness (Shore A, unless indicated) NASA Outgassing Test Results (ASTM E 595) Lap- Shear Strength (psi) CTE (ppm/°C) A fC) Volume Resistivity (ohm-cm) Thermal Conductivity (W/m-K)... [Pg.155]

A family of 177 C curing, toughened cyanate ester paste adhesives. EX-1537 is a thixotropic two-part paste and EX-1537-1 is of lower viscosity. Both offer excellent mechanical and thermal performance in addition to low moisture absorption and low outgassing, coupled to excellent microcrack resistance, all ideal properties for space and cryogenic applications. [Pg.76]

Polymer applications of DSC are numerous and concern the determination of Tm (ASTM E 794), Tg (ASTM E 1326-03, ISO/FDIS 11357-2), specific heat capacity of a material (ASTM E 1269, ASTM D 4816), crystallisation temperature upon cooling (ASTM E 794), transition temperatures (ASTM D 3418, ASTM D 4419, ASTM D 4591), purity of a material [79,80], contamination outgassing (ASTM E 1559), reaction rates, sample composition, reaction kinetic constants (ASTM E 698), reaction mechanisms, thermal stability (ASTM E 537), minimum processing temperatures, heat of fusion and crystallisation (ASTM D 3417), heat of crystallisation (ASTM E 793), additive effects on a material, quality control of raw materials [25], discrimination between materials, detection of polymorphism [81], characterisation of thermally and UV cured materials (cure state, degree of cure) (ASTM D 2471, ASTM D 5028), oxidative stability testing, QIT (ASTM D 3895, ASTM D 3012, ASTM E 1858-03), etc. [Pg.165]

See other pages where Outgassing thermal curing is mentioned: [Pg.202]    [Pg.204]    [Pg.249]    [Pg.249]    [Pg.355]    [Pg.298]    [Pg.140]    [Pg.475]    [Pg.134]    [Pg.32]    [Pg.129]    [Pg.309]    [Pg.316]    [Pg.137]    [Pg.156]    [Pg.361]    [Pg.368]    [Pg.411]    [Pg.326]    [Pg.137]    [Pg.156]    [Pg.363]    [Pg.370]    [Pg.413]    [Pg.36]    [Pg.126]    [Pg.927]    [Pg.299]    [Pg.301]   
See also in sourсe #XX -- [ Pg.202 ]



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Thermal curing

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