Low-temperature low-pressure vulcanized rubber lining composition and application method thereof
A vulcanized rubber, low temperature and low pressure technology, which is applied in the field of rubber polymer materials and materials, can solve the problems of poor density of rubber lining, decline of anti-corrosion performance, poor bonding strength, etc., to achieve stable performance, improve stiffness, and avoid bubbling Effect
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Embodiment 1-7
[0054] Preparing rubber according to the rubber lining composition formula (parts by weight) of table 1:
[0055] Table 1: Composition formulations of Examples 1-7
[0056]
[0057]
[0058] Wherein, the natural rubber includes one or more of standard natural rubber, smoked sheet rubber and constant-viscosity natural rubber. SBR is a non-polluting styrene-butadiene rubber, which has good compatibility with natural rubber and high styrene. High styrene refers to high styrene rubber with a styrene content of 60% to 80%. Low-pressure vulcanization masterbatch is a masterbatch made by blending EPDM / EVA (ethylene-propylene rubber / ethylene-vinyl acetate) with nano-calcium oxide and surface active dispersing aids. The content of nano-calcium oxide is 70-80%, and the content of EPDM / EVA is 15-26%. The pre-dispersed zinc oxide masterbatch is selected from active zinc oxide masterbatch and nanometer zinc oxide masterbatch. The pre-dispersed accelerator micelle is selected from...
Embodiment 1
[0083]After the SP-2L adhesive used for the rubber paste obtained in Example 1 is changed to SP-2 adhesive, it is still vulcanized according to the vulcanization process of Example 1-1.1-2, 1-3, and the bonding strength of the obtained lining is respectively 5MPa , 6.5MPa, 4MPa. This shows that the two-component SP-2L adhesive used in the present invention is more suitable for low-temperature and low-pressure vulcanization than the commonly used SP-2 high-quality natural rubber adhesive on the market, which is conducive to ensuring the bonding strength. Because in the low-temperature and low-pressure vulcanization state, the vulcanization speed of SP-2L with polyisocyanate is faster, which basically matches the vulcanization speed of the rubber sheet.
[0084] Table 3: The rubber vulcanization process and detection results prepared by the rubber lining compositions of Examples 2, 3, 4, 5, 6, and 7 are as follows:
[0085]
[0086] It can be seen that the rubber prepared ac...
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