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Pendulum hardness

For the above polyol blend viscosity (Brookfield, ASTM D-2196) = 1500 mPa-S at 23° C. For the reaction mixture working (pot) life 20 min Gardner circular dry times [72°F, 54% relative humidity (RH)] surface dry = 1.0 h, hard dry = 2.0 h, mar free = 3.5 h. For the finished coating gloss (ASTM D-523) = 90+ at 60° impact (ASTM D-2794) = 60 in.-lb direct, 10 in.-lb reverse Tabor abrasion (ASTMD-4060,1000 g load, 1000cycles, CS-17 wheel) = 95.6 mg pendulum hardness = 180 s MEK double rubs (ASTM D4752-95, 50 double rubs) = softened. [Pg.253]

Dynamic mechanical thermal analysis (DMTA) Pendulum hardness... [Pg.23]

EC = Erichsen cupping, FT = film thickness, HK = Konig pendulum hardness, MEK test = resistance to butanone, and Peugeot test = premium-grade gasoline resistance. [Pg.23]

Pendulum hardness (Koenig 53157) and cross-hatch tests (DIN 53 151) were performed on polymers prepared using selected initiators described in this application and results provided in Table 2. [Pg.319]

TABLE 2. Pendulum Hardness and Cross-Hatch Testing Results for Polymers Prepared Using Selected Dialkyl-Thiocarbamic Acid Esters... [Pg.319]

Oven testing was performed using 0.4 g of a selected polymer sample that were dissolved in screening formulation (20.00 g) and then applied to white coil-coat aluminum and baked in an oven at 160°C for 30 minutes and a tack free dry film with a thickness of approximately 25 cm obtained. After curing for 45 minutes, the pendulum hardness testing was conducted and results summarized in Table 3. [Pg.320]

TABLE 3. Pendulum Hardness Testing Results for Cured Polymers Prepared Using Selected Dialkylthiocarbamic Acid Esters as Initiators... [Pg.320]

Figure 9. Pendulum hardness as a function of curing time for several initiator concentrations. V 2% IV + 0.14% V 8% IV 6% IV A IV ... Figure 9. Pendulum hardness as a function of curing time for several initiator concentrations. V 2% IV + 0.14% V 8% IV 6% IV A IV ...
The measurements of the pendulum hardness confirm further the necessity of a fmal thermal activation step. While irradiated, samples may exhibit up to 180 s pendulum hardness upon standing for 24 hours at 20 °C the same irradiated samples show a pendulum hardness of 220 s if heated at 110 °C for 3 min. immediately after irradiation (Method of determination according to Konig.)... [Pg.69]

Fig. 7. Pendulum hardness behaviour of a coating composed of Bisphenol-A diglycidyl ether with 2.5%(w/w)Ph3S+PFs-. Fig. 7. Pendulum hardness behaviour of a coating composed of Bisphenol-A diglycidyl ether with 2.5%(w/w)Ph3S+PFs-.
Photoinitiating system Curing rate Pendulum hardness (s) ... [Pg.187]

Table 31. UV curing activity, as determined by Koenig pendulum hardness, of a Ti02-pigmented polyester acrylate formulation in the presence of polymeric and low-molecular-weight initiators based on thioxanthone and hydroxypropiophenone moieties, as a taction of irradiation conditions ... Table 31. UV curing activity, as determined by Koenig pendulum hardness, of a Ti02-pigmented polyester acrylate formulation in the presence of polymeric and low-molecular-weight initiators based on thioxanthone and hydroxypropiophenone moieties, as a taction of irradiation conditions ...
Film thickness, um Film appearance Pendulum hardness (Konig), s Adhesion (crosshatch, DIN 53151) Erichsen impact, reverse, mm Conical mandrel bend (ASTM D522-60) Salt-spray resistance (ASTM B117-6U 10 d) 22-28 very good 195 Gt 0 >3 passed 9-9-2 22-28 good 170 Gt 0 >3 passed 85... [Pg.67]

Pendulum hardness (Koenig) was measured on 1 mil (25,4 um) coatings applied to gray primed aluminum panels. All panels were exposed to 5 passes at 200 f/m under the Fusion H bulb. Dark substrates have been utilized to minimize reflection. [Pg.30]

CORRELATION OF PIA CALCULATIONS WITH CURING RESULTS. Table III shows the results of testing five concentrations of CGI-369 for scratch resistance and pendulum hardness in coatings cured under the Fusion H bulb. These test results are plotted in Figure 5. Both surface cure (scratch resistance) and through cure (pendulum hardness) were found to plateau at the higher concentrations of CGI-369 tested. [Pg.34]

Figure 5 - The dependence of Surface Cure (scratch resistance) and Through Cure (pendulum hardness) on concentration of developmental photolnltlator CGI-369. Figure 5 - The dependence of Surface Cure (scratch resistance) and Through Cure (pendulum hardness) on concentration of developmental photolnltlator CGI-369.
Figure 6 - Correlation of through cure (pendulum hardness) with PIA calculated at depth 0.4 mils. PIA calculated for concentrations of CGI-369 ranging from 0.5 to 7.5%. Figure 6 - Correlation of through cure (pendulum hardness) with PIA calculated at depth 0.4 mils. PIA calculated for concentrations of CGI-369 ranging from 0.5 to 7.5%.
Table I. Pendulum Hardness of UV Cured Layers (measured according to DIN 53 157) Depending on Initiator Compound and Irradiation Time... Table I. Pendulum Hardness of UV Cured Layers (measured according to DIN 53 157) Depending on Initiator Compound and Irradiation Time...
The pendulum hardness is used to test painted steel surfaces. For this method, a duroscope is used. Here, a small hammer similar to a pendulum is made to fall on the sample. There are also many other standard test methods for pendulum hardness tests. [Pg.457]

Figure 1. Pendulum hardness of UV-cured films of urethane acrylate and NVP is shown against the number of passes as function of concentration of the photoinitiator. Figure 1. Pendulum hardness of UV-cured films of urethane acrylate and NVP is shown against the number of passes as function of concentration of the photoinitiator.
Figure 4 represents the plots of pendulum hardness of the UV-cured films against the Tg copolymer (cured film) calculated on the basis of the Fox equation. Only the... [Pg.672]

See other pages where Pendulum hardness is mentioned: [Pg.243]    [Pg.255]    [Pg.592]    [Pg.319]    [Pg.319]    [Pg.320]    [Pg.468]    [Pg.158]    [Pg.208]    [Pg.37]    [Pg.37]    [Pg.111]    [Pg.305]    [Pg.313]    [Pg.314]    [Pg.314]    [Pg.377]    [Pg.435]    [Pg.451]    [Pg.163]    [Pg.670]    [Pg.671]    [Pg.672]    [Pg.672]    [Pg.672]   
See also in sourсe #XX -- [ Pg.468 ]

See also in sourсe #XX -- [ Pg.457 ]

See also in sourсe #XX -- [ Pg.457 ]

See also in sourсe #XX -- [ Pg.450 ]

See also in sourсe #XX -- [ Pg.671 , Pg.674 ]



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