With the rapid development of China’s economy, China’s construction scale will grow rapidly in the next few years, and the demand for building insulation materials is also growing. The polyurethane material has excellent performance, which can maintain the thermal insulation performance of energy-saving building roof and exterior wall, and prevent the insulation layer from leaking. Some architects say that polyurethane insulation materials have good insulation properties outside the outer wall and high strength, which is a very solid polyurethane foam machine. The building insulation market supports the demand for polyurethane foaming machines. Therefore, the foaming machine occupies a high position in the construction industry.
The foaming of the eps foaming machine is a complicated physical and chemical reaction process. Therefore, the polyurethane foaming machine has mastered the key control points after foaming, and the fluctuation of the raw materials, mold preheating temperature and aging time selected for eliminating mechanical failure will also directly affect The quality of the foaming properties of polyurethane foams, such as the slight operation of the foam process, can lead to erroneous vacuoles, so we must understand the point at which the foaming machine is foamed:
First, we need to know polyisocyanates, polyethers, blowing agents, catalysts and foam stabilizers in black and white materials that directly determine the chemical nature of the chemical reaction and polyurethane foam. Choosing a qualified foaming material company is the basic condition for producing qualified polyurethane foam.
Secondly, the raw material liquid and the injection amount should strictly control the ratio of the black substance, and the polyether and cyclopentane are combined. When the total amount of injection is constant, vacuoles may occur when the proportion of carbon black is too large. When the white matter ratio is too large, soft foam will appear. When the proportion of cyclopentane is too large, a foam will appear. When the ratio of black and white material is out of balance, the mixing is uneven and the foam shrinks.
