Fluororubber composition for peroxide crosslinking and method for producing rubber laminate
A technology of peroxide and fluororubber, applied in chemical instruments and methods, rubber layered products, layered products, etc., can solve compression permanent deformation, poor adhesion, absence of fluororubber layer and non-fluororubber layers and other issues
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Embodiment 1～7
[0164] The fluororubbers were mixed according to the formulations in Table 1, and kneaded on an open roll to prepare fluororubber compositions (1) to (7). The prepared fluororubber compositions (1)-(7) were molded and cross-linked at 160°C for 10 minutes, and baked and cross-linked at 180°C for 4 hours to produce cross-linked sheets and circles with a thickness of 2 mm. The tested sample of ring (P-24). The cross-linkability of the fluororubber compositions (1)-(7), the normal physical properties and compression set of the cross-linked products were measured, and the results are listed in Table 1. Furthermore, the heat aging resistance and oil resistance of the crosslinked product of the fluororubber composition (1) were measured. The results are listed in Table 2.
Embodiment 8
[0166] The fluororubbers were mixed according to the formulations in Table 1, and kneaded on an open roll to prepare a fluororubber composition (8).
Embodiment 9～16 and comparative example 3～4
[0175] Mixing was performed at the same mixing ratio as in Table 1, and kneading was carried out on an open roll to produce a non-crosslinked fluororubber sheet having a thickness of 1.2 mm made of the fluororubber compositions (1) to (10). Next, 1 part by weight of the crosslinking agent 2 was mixed with 100 parts by weight of the silicone rubber, and kneaded on an open roll to prepare an uncrosslinked non-fluorine rubber sheet having a thickness of 3.2 mm. Such as figure 1 As shown, the non-crosslinked fluororubber sheet 1 and the non-crosslinked non-fluororubber sheet 2 are superimposed on each other, and then the fluororesin film 3 (thickness 150 μm, manufactured by Daikin Industries, Ltd., trade name NEOFLON FEP NF-0150) clamping. At this time, the fluororesin film 3 was inserted into the interface at a depth of about 1 cm to 1.5 cm from one end to create a non-adhesive portion, and a slider (slap み し ろ) in the peel test was produced. It was preformed to a thickness of ...
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