Formulation of water-based mold releasing agent

2022-02-06   Pageview:130

Recipe 1: Water-based mold release agent

Basic components: paraffin wax 5~20 parts, stearic acid 5~8 parts, vegetable oil 5~10 parts, auxiliary emulsifier 5~8 parts, potassium hydroxide calculation amount, other auxiliary ingredients appropriate amount, nipagin ethyl ester appropriate amount, deionized water to 100 parts.

Paraffin wax, stearic acid, emulsifier, auxiliary oil raw materials in a container heated to 60 ~ 80 ℃ melting, water, alkali, auxiliary water-based raw materials in another container, mixed and heated to 80 ~ 90 ℃; so that the oil phase and the water phase temperature is basically the same, and then slowly add the water phase to the oil phase under vigorous stirring, slowly emulsification, phase transfer, stirring speed decreases with the emulsification temperature and gradually slow down Then, the product was discharged after stirring to room temperature, and white oil-in-water emulsion was obtained. The results show that the mold release effect and performance test are very good.

Recipe 2: polyurethane water-based mold release agent

Polyurethane water-based mold release agent, consisting of the following weight percent components.
Emulsified wax liquid: 10% to 15%; methyl silicone oil emulsion: 15% to 20%; modified silicone oil emulsion: 5% to 8%; deionized water: 50% to 55%; emulsifier: 4.5% to 6%; additives: 0.5% to 1%; preservative: 0.3% to 0.5%.

This water-based release agent, mainly used in the production process of polyurethane products cast molding after leaving the mold, giving most polyurethane molding good release effect. Its characteristic is that the product takes water as the dispersed phase, and the water-soluble substance formed has the function of making polyurethane foam release, but also has biodegradability, no harmful substances such as VOC produced, and strong environmental protection; and water as diluent, no pollution and easy to obtain, low cost.

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