Conductive rubber roller
A rubber roller, rubber technology, applied in the field of transfer rollers of transfer components, can solve the problems of small environment dependence, difficult to achieve low resistance, etc.
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Embodiment 1-1 and comparative example 1-1 to 1-6
[0105] The obtained results are presented together in Table 1.
[0106] As shown in table 1, find out from embodiment 1-1 and comparative example 1-1 to 1-5: ethylene oxide-propylene oxide-allyl glycidyl ether terpolymer when it is required in the present invention It is suitable when within the range. More specifically, in Comparative Example 1-1, in which the melting peak temperature was higher and the melting enthalpy change ΔH was larger than those within the range of the present invention and the copolymerization ratio of allyl glycidyl ether was smaller than the range of the present invention, Ethylene oxide has such a high crystallinity that it brings about a small resistivity lowering effect. Meanwhile, since the copolymerization ratio of allyl glycidyl ether is small, the obtained roll has great environmental dependence and poor photosensitive member stain resistance. In addition, in Comparative Example 1-2, in which the melting peak temperature is lower and the mel...
Embodiment 2-1 to 2-4 and comparative example 2-1
[0109] The obtained test results are given in Table 2 together.
[0110] As shown in Table 2, it can be seen from Examples 2-1 to 2-4 that the mixing amount of the ethylene oxide-propylene oxide-allyl glycidyl ether terpolymer used in the present invention is preferably 5 to 20 parts by mass. More specifically, in Examples 2-4 in which the blending amount thereof was greater than 20 parts by mass, the obtained conductive rubber roller showed large environmental dependence.
[0111] It can also be seen that compared with Example 2-3, Comparative Example 2-1, which is the resistance of the conductive rubber roller without mixing any ethylene oxide-propylene oxide-allyl glycidyl ether terpolymer The conductive rubber roller controlled only with acrylonitrile-butadiene rubber and epichlorohydrin-based rubber showed a higher durability than that of the ethylene oxide-propylene oxide-allyl glycidyl ether ternary compound according to the present invention. The difference between t...
Embodiment 3-1 and comparative example 3-1
[0113] The obtained test results are given in Table 3 together.
[0114] As shown in Table 3, it is seen from Example 3-1 and Comparative Example 3-1 that the rubber composition used in the present invention more preferably contains an ion conductive agent. It was seen that Example 3-1, which was the same as Example 1-1 except for mixing 1 part by mass of the ion-conducting agent, had achieved low resistivity more effectively while retaining the small environmental dependence obtained in Example 1-1. In addition, no problem of contamination of the photosensitive member was found. In contrast, for Comparative Example 3-1, in which 1 part by mass of an ion-conducting agent was mixed into a rubber composition using an ethylene oxide-propylene oxide-allyl glycidyl ether terpolymer outside the scope of the present invention Among them, the effect of lowering the resistivity is insufficient, while the obtained roll has a large environmental dependence and further causes contaminati...
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Abstract
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