Expandable silicone rubber sheet and preparation method thereof
A silicone rubber sheet, expandable technology, applied in the field of rubber, to achieve the effect of adjustable foaming ratio, simple foaming process, and improved mechanical strength
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[0025] Example 1:
[0026] The expandable silicone rubber sheet disclosed in Example 1 includes the following raw materials:
[0027] In parts by mass, 100 parts of silicone rubber, 15 parts of white carbon black, 40 parts of talc, 100 parts of aluminum hydroxide, 3 parts of vulcanizing agent (DCP), 8 parts of foaming agent, 4 parts of hydrogenated silicone oil.
[0028] The above-mentioned expandable silicone rubber sheet is made by the following method steps:
[0029] Step 1. Put the weighed silicone rubber and white carbon black into an open mill for plastic mixing, then add talc, aluminum hydroxide, vulcanizing agent, and foaming agent in sequence, and finally add 4 parts of hydrogenated silicone oil to increase the silicone rubber Fluidity, to make compound rubber.
[0030] Step 2: Put the rubber compound obtained in Step 1 into a calender for sheeting, adjust the roll distance according to the size of the mold cavity and the required foaming ratio to obtain an expandable silicone...
Example Embodiment
[0034] Example 2:
[0035] The change of Example 2 from Example 1 is that the type of vulcanizing agent is changed.
[0036] The expandable silicone rubber sheet disclosed in Example 2 includes the following raw materials measured in parts by mass:
[0037] In parts by mass, 100 parts of silicone rubber, 15 parts of white carbon black, 40 parts of talc, 100 parts of aluminum hydroxide, 3 parts of vulcanizing agent (BPO), 8 parts of foaming agent, 4 parts of hydrogenated silicone oil.
[0038] The above-mentioned expandable silicone rubber sheet is made by the following method steps:
[0039] Step 1: Put the weighed silicone rubber and white carbon black into an open mill for plasticizing, then add aluminum hydroxide, vulcanizing agent, foaming agent, and finally hydrogenated silicone oil to prepare a rubber compound.
[0040] Step 2: Put the rubber compound obtained in Step 1 into a calender for sheeting, adjust the roll distance according to the size of the mold cavity and the required ...
Example Embodiment
[0044] Example 3:
[0045] The change of Example 3 from Example 1 is that the type of vulcanizing agent is changed.
[0046] An expandable silicone rubber sheet disclosed in Example 3 includes the following raw materials measured in parts by mass:
[0047] In parts by mass, 100 parts of silicone rubber, 15 parts of white carbon black, 40 parts of talc, 100 parts of aluminum hydroxide, 3 parts of vulcanizing agent (Double 25), 8 parts of foaming agent, 4 parts of hydrogenated silicone oil.
[0048] The above-mentioned expandable silicone rubber sheet is made by the following method steps:
[0049] Step 1: Put the weighed silicone rubber and white carbon black into an open mill for plasticizing, then add aluminum hydroxide, vulcanizing agent, foaming agent, and finally hydrogenated silicone oil to prepare a rubber compound.
[0050] Step 2: Put the rubber compound obtained in Step 1 into a calender for sheeting, adjust the roll distance according to the size of the mold cavity and the requ...
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