High-temperature-resistant release paper as well as preparation method and application thereof
A technology of release paper and release layer, applied in the field of composite paper, can solve the problems of increasing bridging agent, catalyst usage, poor performance, slow production speed, etc., saving catalyst and bridging agent, and simple preparation process Feasible, improved adhesive properties
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Embodiment 1
[0039] A manufacturing process of high temperature resistant PEK double-sided release paper, comprising the following steps:
[0040] (1) Prepare the constituent materials of the PE coating layer with micropores
[0041] Add nano-silica into water, disperse evenly, add coupling agent HK550, and react at 200-250°C for 3-5h; then add sulfuric acid to adjust the pH value so that the pH is around 5-6; finally add n-octylic anhydride, Stir and react at a temperature of 100°C-120°C for 2-3 hours, then cool, filter, and centrifugally dry to obtain modified nano-silica;
[0042] Wherein, the concentration in the bath of nano-silica is 400kg-600kg per cubic meter of water;
[0043] The weighing ratio is HDPE: LDPE: modified nano-silica = 300:600:50, first put HDPE and LDPE into a plastic stirrer with an electrostatic field or a stirrer with a stainless steel inner layer treated by spraying polytetrafluoroethylene, Stir for 10-15 minutes, stir HDPE and LDPE evenly, and sprinkle the mo...
Embodiment 2
[0076] The difference between Example 2 and Example 1 includes that the mass ratio of HDPE, LDPE and modified nano-silica in Example 2 is 650:350:100. Obtain embodiment finished product 2, marked as release paper finished product 2.
[0077] The physical properties of the finished product 2 of the release paper are shown in the following table 2-1:
[0078] table 2-1
[0079]
[0080]
[0081] Note: 1. ND means not detected, and MDL is the inspection limit value of the inspection item.
[0082] 2. The base material uses NPI78g / m 2 yellow paper.
[0083] In the finished product 2 of the release paper, the release force of the release paper is produced at a ratio of 1:3. This release paper is very suitable for the production of pressure-sensitive adhesives without substrates, such as conductive tapes, thermal tapes, VHB tapes and graphite vinyl tape.
[0084] See Table 2-2 for the cost comparison between the traditional process and Example 2.
[0085] Table 2-2 adopt...
Embodiment 3
[0095]The difference between embodiment 3 and embodiment 1 includes that the base material selected in embodiment 3 is glassine base paper, because the surface of glassine paper is smooth and dense, so the AC agent is added before the corona treatment step, and the used The best AC agent is water-based, such as Japan’s EPOMIN’s P-1050, and then dried. The oven temperature is set at 90-95°C. Such a process greatly improves the interlayer composite force of paper and PE, fully meets the product requirements, and the obtained release paper can obtain good heat resistance, and obtains the finished product 3 of the embodiment, which is marked as the finished product 3 of the released paper. The physical properties of the finished product 3 of the release paper are shown in the following table 3-1.
[0096] Table 3-1
[0097]
[0098]
[0099] Note: 1. ND means not detected, and MDL is the inspection limit value of the inspection item;
[0100] 2. The base material uses UPM5...
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