A kind of release agent for rubber molding industry and preparation method thereof
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A technology for rubber molding and industrial use, which is applied in the field of release agent for rubber molding industry and its preparation, which can solve the problems of low release efficiency of release agent, achieve good release effect, improve overall quality, and excellent release effect Effect
Active Publication Date: 2021-03-23
SHANGHAI XINPING FINE CHEM CO LTD
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Problems solved by technology
[0008] In view of the deficiencies in the prior art, the first object of the present invention is to provide a release agent for rubber molding industry, which solves the problem of the low demoulding efficiency of the rubber molding release agent in the prior art. The problem, which has a high demoulding efficiency during use
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Embodiment 1-3
[0041] Embodiment 1-3: A mold release agent for rubber molding industry. The components and their corresponding parts by weight are shown in Table 1, and are prepared through the following steps:
[0042] Step 1, preparing materials, weighing polydimethylsiloxane, tetrabutyl orthotitanate, cooked tung oil, ethyl acetate and petroleum ether according to the mass ratio;
[0043] Step 2, premix phase A, add ethyl acetate to cooked tung oil and stir to dissolve, mix evenly, stirring speed is 1500rpm, time is 10min, as phase A;
[0044]Step 3, premix phase B, add polydimethylsiloxane to petroleum ether, stir rapidly until completely dissolved, stirring speed is 1000rpm, time is 15min, as phase B;
[0045] Step 4, final mixing, add phase A into phase B during rapid stirring, stir until completely dissolved, stirring at 1500 rpm, for 10 minutes, mix evenly to obtain a mixture;
[0046] Step 5, discharge, stir the mixture clockwise, the stirring speed is 800rpm, at the same time, add...
Embodiment 4
[0050] Embodiment 4: A mold release agent for rubber molding industry. The difference from Embodiment 1 is that the viscosity of polydimethylsiloxane in step 3 is 200cs.
Embodiment 5
[0051] Embodiment 5: A mold release agent for rubber molding industry. The difference from Embodiment 1 is that the viscosity of polydimethylsiloxane in step 3 is 500cs.
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Abstract
The invention discloses a release agent for the rubber forming industry and a preparing method of the release agent, and relates to the technical field of release agents. The problem that a rubber forming release agent in the prior art is low in demoulding efficiency is solved. The release agent for the rubber forming industry comprises following substances including, by weight percent, polydimethylsiloxane, 1.0%-2.0% of ortho-tetrabutyl titanate, 1.0%-2.0% of boiled tung oil, 5%-10% of ethyl acetate, 0.3%-0.7% of a demoulding addition agent, 0.2%-0.4% of a coupling agent and the balance petroleum ether. According to the release agent for the rubber forming industry, a finished product is easily released from a die, the surface of a plastic part is smooth, the rubber product is prevented from adhering to the die, a good demoulding effect can be achieved, and the high demoulding efficiency is achieved.
Description
technical field [0001] The invention relates to the technical field of release agents, more specifically, it relates to a release agent for rubber molding industry and a preparation method thereof. Background technique [0002] Metal, rubber, plastic and other products are molded and processed in the mold, and the cured product is in contact with the surface of the mold. Due to micro-defects such as unevenness on the working surface of the mold, there will be a certain friction resistance when the product is peeled off from the mold. Or the two are bonded due to physical adsorption or chemical bonding, which makes it difficult to peel off the mold after the product is formed. In order to weaken the adsorption or bonding between the product and the mold, it is necessary to use a release agent. [0003] There are several types of rubber molding release agents currently on the market: [0004] 1. Use oil-based silicone plastic release agent as the main release material. Since...
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Application Information
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