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Hardness-impact resistance ratio

The outstanding feature of enamels made from 40/60 to 50/50 PHBA/diol ratio L-C polyols is that they are both very hard and very impact resistant as shown in Table 3 and 4. [Pg.343]

The hardness of such a composite, for example, can be varied by control of the molar ratio of alkyl R groups to Si atoms, as is illustrated for PDMS in Figure 8.12.138 Low values of R/Si yield a brittle ceramic, and high values give a relatively hard elastomer. The most interesting range, R/Si = 1, can yield a relatively tough ceramic of increased impact resistance. [Pg.306]

Structural elements of unsaturated polyester resins that affect the properties of the cured products include molecular weight and molecular weight distribution, distribution of various repeating units, type of unsaturation, and ratio of acid to glycol components. An overall concept regarding the structural features of polyester resin and the performance properties of cured product is not available. However, it is known that the structural features determine the values of hardness, impact strength, heat-distortion temperature, water absorption, chemical resistance, and heat resistance. [Pg.369]

See other pages where Hardness-impact resistance ratio is mentioned: [Pg.163]    [Pg.163]    [Pg.33]    [Pg.313]    [Pg.71]    [Pg.189]    [Pg.284]    [Pg.47]    [Pg.197]    [Pg.235]    [Pg.112]    [Pg.178]    [Pg.378]    [Pg.21]    [Pg.178]    [Pg.22]    [Pg.515]    [Pg.343]    [Pg.229]    [Pg.285]    [Pg.581]    [Pg.213]    [Pg.2877]    [Pg.3131]    [Pg.229]    [Pg.285]    [Pg.84]    [Pg.313]    [Pg.75]    [Pg.636]    [Pg.4325]    [Pg.30]    [Pg.185]    [Pg.198]    [Pg.642]    [Pg.379]    [Pg.506]   
See also in sourсe #XX -- [ Pg.163 ]



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Impact resistance

Resistivity ratio

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