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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But not the type of the functional group particularly limited with the specific polyol, specific polyol, since it is preferably obtained jiss ring-opening polymerization of EO and PO, the functional group, at least one terminal propylene oxide group and a terminal ethylene oxide groups it is preferable that. Cross-linking agent 1 a crosslinking agent 1 Asahi Glass Co. For this reason, it is required to further reduce the thickness of the seat pad.
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.
Therefore, the high resilience and high vibration absorption was characteristic of antinomy. Polyurethane foams, depending on the application, the mechanical properties, various properties such as heat insulation and vibration-absorbing properties are required. A weight average molecular weight of 4, to 10, the number of functional groups having a weight average molecular weight per functional group is 1, to 4, of the polyol, one of claims 1 to 6, which is a 3 or 4 1 polyurethane foam according to item.
The pressure foot of ball joint type is used to cope with slant of the sample pressing surface. Specific polyol may be a commercially available product, for example, manufactured by Sanyo Chemical Industries, Ltd.
Compression Test Jig for Foam Rubber Specimens : SHIMADZU (Shimadzu Corporation)
The tester is especially suitable to evaluate compression strength of packaged cargo when it is lower loaded during its logistic process. Rebound resilience polyurethane foam, the resonance frequency and the vibration magnification, the density of the polyurethane foam, closed cell content, cell size, they tend to depend on the hardness and the like. According to the present invention, it is possible to provide a polyurethane foam and a seat pad to achieve both high resilience and high vibration absorption.
Wood Tension Fixtures Instron testing machines can follow ASTM D and find the strength parallel k400 perpendicular to the grain, internal bond strength, and cleavage strength for wood. 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.
Software for Series Systems.
JIS K 6400 Foam Dynamic Roller Shear Compression Fatigue Lab Test Machine
Sign in to annotate. Seat pad of the present invention, in the foam molding of a polyurethane foam, as the mold, can be obtained by using a mold having a shape of a desired seat pad. Flexible polyurethane foam, process for its production, and seat for automobile employing it.
Setting of the measuring k4600 and indication of the measuring data are in accordance with International Unit System SI. The content of the specific polyol in the polyol component is preferably 65 to parts by mass with respect to the polyol component parts by weight, more preferably parts by weight, more preferably 65 to 75 parts by weight.
On the other hand, by including a specific amount of k4600 specific polyol in the polyol component, it is possible to finely bubbles polyurethane foam to be molded, is considered to easily closed cells are formed. Foam stabilizer 1 Foam stabilizer 1 Evonik Ltd. 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.
Setting of the measuring requirements and indication of the measuring data are in accordance with International Unit System SI. Crosslinking agent, there can be used those commonly used as those for the polyurethane foam moldings, such as ethylene oxide-terminated crosslinking agent, it is possible to use propylene oxide terminated crosslinking agent.
Effect of Urethane Foam Cushioning on Structure-Borne Sound Transfer by a Slab with Panel Flooring
Foaming stock solution is poured under atmospheric pressure into a mold, then foamed and cured at a mold, and demolding, the polyurethane foam. Thus, for example, the polyol component, the particular polyol, other polyols, and optionally comprising a crosslinking agent, the content in the polyol component in a specific polyol, with respect to parts by weight of the total of the particular polyol and other polyol crosslinking agentthe 65 parts by mass or more.
Available for data communication with PC by Ethernet connection. Polyurethane foam and seat pad The present invention relates to a polyurethane foam and seat pad.
The pressure foot of ball joint type is used to cope with slant of the sample pressing surface. Communication agent may be used as general purpose as for polyurethane foam moldings. WaveMatrix 2 for Dynamic Testing. 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. Blowing agent water, acetic acid, a chemical foaming agent such as formic acid, fluorocarbons, and physical blowing agents such as dichloromethane and the like, a chemical foaming agent is preferred, water is more preferable.
AF has steadily accumulated many good result with introduction to main manufacturing site for the purpose of “Hardness testing for foam” for long time. It is possible to control the aeration amount by giving minimal foam destroying by 35 parts by mass or less.
Breathable polyurethane foam, size of the bubbles in the polyurethane foam sometimes referred to as cellthe amount, depending on the shape or the like, for example, easily vent the air bubbles are communicated, the communication does not bubble independently bubbles difficult to airflow and often. By using the foam stabilizer, it is easy to control the size of the bubbles of the polyurethane foam cell size.
Abstract PDF References Article Recommendations Abstract Urethane foam mattresses are commonly used as cushioning when placing panel flooring on the floor slab of a building. For example, in the seat pad for a vehicle, vibration caused by the vehicle running, vibration absorption to absorb vibration of the engine is demanded.
Repulsive elastic modulus of the rebound resilience polyurethane foam, was measured by the method based on JIS K AF Series is Automatic Hardness Tester for flexible urethane foams to be used for cushion materials in such products as car seat, furniture, and bedding, and for other kind of plastic foam. JIS-S This tester is for evaluating the strength and durability of furniture such as chairs or stools. JIS- KK This tester is used to repeatedly kis compression residual strain of polyurethane foam and latex foam soft material according k400 the constant displacement method.