Resin foam
A resin foam, resin technology, applied in synthetic resin layered products, film/sheet adhesives, chemical instruments and methods, etc., can solve the problem of no disclosure or enlightenment of high impact absorption, and achieve impact Effects of excellent absorbency and excellent flame retardancy
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Embodiment approach 1
[0118] As an embodiment 1 of forming the above-described resin foam body, for example, the following ways may be cited: after the emulsion resin composition (emulsion comprising a resin material (polymer) or the like) mechanical foaming foaming process (process A) to form a resin foam body. As a foaming device, it may be listed, for example: a device for high-speed shearing mode, a device for vibration mode, a device for the injection method of pressurized gas, etc. Among these foaming devices, from the perspective of micro-refinement of bubble diameter and large-capacity production, the high-speed shearing method device is preferred. The embodiment 1 of the formation of the above-described resin foam body may be applied regardless of which resin composition is formed.
[0119] From the point of view of film formation, it is preferable to have a high concentration of solid components of the emulsion. The concentration of the solid component of the emulsion is preferably more than 30...
Embodiment approach 2
[0125] As an embodiment 2 of forming the above-described resin foam body, it may be cited that the use of a blowing agent to foam the resin composition to form a foam body. As a blowing agent, the blowing agent commonly used in foam molding can be used, and from the perspective of environmental protection and low pollution of the foamed body, it is preferable to use a high-pressure inactive gas.
[0126]As an inactive gas, as long as the resin composition is inactive and can be infiltrated, any suitable inactive gas may be employed. As such inactive gases, you can cite, for example: carbon dioxide, nitrogen, air and the like. These gases can also be mixed. Among them, from the point of view of the amount of impregnation of the resin material (polymer) and the rapid impregnation rate, carbon dioxide is preferred.
[0127] Inactive gases are preferably supercritical. I.e., the use of carbon dioxide in a supercritical state is particularly preferred. In the supercritical state, the s...
Embodiment 1
[0182] Using a twin-screw mixer manufactured by Nippon Steel Co., Ltd., polypropylene (melt flow rate (MFR) (230°C): 0.40g / 10min) 65 parts by weight, polyolefin elastomer (melt flow rate (MFR): 6 g / 10 min, JIS A hardness: 79° by weight, magnesium hydroxide (trade name "KISUMA 5P" Concord Chemical Industry) 80 parts by weight, carbon (trade name "Asahi #35" Asahi Carbon Co., Ltd.) 10 parts by weight, and monoglyceride stearate 1 part by weight at a temperature of 200 ° C, extruded in the form of wire, and formed into granules after water cooling. The pellets were fed into a single screw extruder manufactured by Nippon Steel Co., Ltd., and carbon dioxide gas was injected at a pressure of 13 MPa (12 MPa after injection) in an atmosphere of 220 °C. Carbon dioxide gas was injected in the proportion of 4.5 parts by weight relative to the resin by 100 parts by weight. After the carbon dioxide gas is fully saturated, it is cooled to a temperature suitable for foaming, and then extruded fr...
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Abstract
Description
Claims
Application Information
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