JIS K Test Methods for Flexible Polyurethane Foam. JIS K Flexible cellular polymeric materials – Determination of physical properties – Part 4: Compression set and fatigue characteristics. JIS K Flexible cellular polymeric materials – Determination of physical properties – Part 1: General rules.
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We can comply with your demand for special sequence with addition and improvement of outer control PC software and program for inside part of tester. ASTM D Internal Bond Test Fiberboard and Wood Adhesives For wood adhesives in wood composites, the internal bond strength test can be done with a or testing machine to determine the tensile strength.
Theoretical modellingJournal of Sound and Vibration,4—5, — As the additive, for example, colorants such as pigments, chain extender, filler such as calcium carbonate, flame retardants, antioxidants, ultraviolet absorbers, light stabilizers, conductive materials such as k64000 black, anti-microbial agents, etc.
The number of functional groups of the specific polyol is not particularly limited, be one per molecule, it may be two or more. The tester capacity comes in either a maximum of 5 kN or 10 kN respectively. Therefore, when water is used as a blowing agent, crosslinking reaction occurs preferentially by the cross-linking agent having an ethylene oxide group, compared with the case of using a his oxide end crosslinker, urethane bonds are rapidly formed, early urethane it is possible to obtain a bond.
Water from to generate carbon dioxide gas reacts with the polyisocyanate component, which acts as a blowing agent. Polymer polyols, may be a commercially available product, for example, manufactured by Sanyo Chemical Industries, Ltd. Isocyanate component manufactured by Nippon Polyurethane Industry Co. Communicating agent Sanyo Chemical Industries, Ltd.
RuiLin Mu mrl tust. This is succeeding model of AF Series which had many delivery result to car industries, seat manufacturers, raw materials manufacturers and public enterprises etc. Features For the load mechanism servo motor and ball screw jack j6400 employed. The new tester meets the standards specified in the JIS K Hardness Test A and B requirements, in addition to those of conventional hardness and deflection tests standards.
Therefore, the seat pad of the present mis also both high resilience and high vibration absorption. Moldability, from the viewpoint of reactivity, block of EO units is preferably in the molecular end.
Automatic Hardness Tester AF | Product | KOBUNSHI KEIKI CO.,LTD.
A weight average molecular weight of 4, to 10, wherein the weight average molecular weight per functional group is a functional group 1, to 4, polyols, one terminal propylene oxide group and at least terminal ethylene oxide groups polyurethane foam according to any one of claim 1 to 7. The demands covering details from user are given always feed-back to development division, and it has been realized high userbility proper to the exclusive machine.
The demands covering details from user are given always feed-back to development division, and it has been realized high userbility proper to the exclusive machine. It is to be noted that the cell diameter of the polyurethane foam, the actual measured five times or more that reflect the microscope is a value obtained by calculating an average value. Subscribe to Our Newsletters.
Certain polyols, in view of impact resilience, weight average molecular weight per functional group is 1, to 4, preferably 1, to 3, more preferably 1, to 2, it is. As described above, the air permeability k640 the polyurethane foams can be the size of bubbles in the polyurethane foam, it depends on the amount or the like, to adjust the size and defoaming degree of bubble bubble index.
The polymerization form of the particular polyol is not particularly limited, it may be a random polymer, may be a block copolymer, but is preferably a block copolymer. On the other hand, by including a specific amount of a specific polyol in the polyol component, it is possible to finely bubbles polyurethane foam to be molded, is considered to l6400 closed cells are formed.
And finer cell diameter, cell by giving viscous effects associated with out of the air, the higher the vibration absorption of the polyurethane foam. The reaction rate of the compound having OH groups are generally primary OH groups, water, high in the order of secondary OH groups primary OH group is high.
De Gruyter – Sciendo.
Foam stabilizer 1 Foam stabilizer 1 Evonik Ltd. Communication agent may be used as general purpose as for polyurethane foam moldings. Above characteristics can be obtained by using a specific amount of a specific polyol, foaming stock solution that used in a manner to be described below the type and amount of the various components may optionally include, obtaining a polyurethane foam better properties be able to.
However, these effects have not yet been detailed, and they may change if the material properties or constitution of the fibres and pores in the cushioning change. Flexible polyurethane foam, process for its production, and seat for automobile using the flexible polyurethane foam. Seat pad made using the polyurethane foam according to any one of claims Particularly suitable as a vehicle seat pad height of the vehicle interior, such as hybrid cars are limited. Therefore, the high resilience and high vibration absorption was characteristic of antinomy.