JIS K 6401 PDF
JIS K Flexible cellular polymeric materials — Polyurethane foam for load-bearing applications excluding carpet underlay — Specification (Foreign. JIS K Flexible polyurethane foam for cushion (FOREIGN STANDARD ). Content Provider Japanese Industrial Standards [JIS]. JIS K Flexible cellular polymeric materials – Polyurethane foam for load-bearing applications excluding carpet underlay – Specification This Japanese.
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In the case that the aliphatic isocyanate is used as a crosslinking agent, a hydrophobic group is 64011 included therein. After allowing them to stand for 22 hours, the compressive residual strain of the samples is measured in accordance with JIS K However, when the cells are attempted to be made increasingly fine in order to reduce the thickness of the packing material, the polyurethane does not adequately foam and density becomes high.
Hydrophobic HDI isocyanurate hydrophobic isocyanurate formed from hexamethylene diisocyanatenumber of functional groups: Moreover, ammonium stearate Anionic Foam Stabilizer 1 and sodium dialkylsulfosuccinate Anionic Nis Stabilizer 2which are two types of foam stabilizers, are used as foam stabilizers in the polyurethane foams of.
As a result, polyurethane foams of Examples 1 to 32 and Comparative Examples 1 to 10 are formed. If a cationic foam stabilizer is added to the urethane emulsion, 6410 particles are attracted to each other through the cationic foam stabilizer and end up aggregating.
The method for producing polyurethane foam according to claim 12, wherein the anionic foam stabilizer includes both ammonium stearate and sodium alkylsulfosuccinate. Polyurethane foam is used in products in various fields due to its considerable pliability and cushioning properties. Further, this application is based upon and claims the benefit of priority from the prior Japanese Patent Application No. We i you a pleasant end-of-year holiday. Fluid iis and components for general use Hydrophilic HDI isocyanurate, number of functional groups: The polyurethane foam formed by foaming the previously described raw materials is a material that has high recovery properties.
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JIS K 6401:2011
However, there is no jsi to exclude aliphatic isocyanates in which the number of monomers is 2 or less and the number of functional groups is 2 or less, and aliphatic isocyanates in which the number of monomers is 2 or less and the number of functional groups is 2 or less are also able to be used. The method for producing polyurethane foam according to claim 16, wherein the hydrophilic group of the urethane resin is at least one of a sulfonate group, a carboxyl group and a hydroxyl group.
The physical properties of the polyurethane foams of Examples 1 to 32 and Comparative Examples 1 to 10 produced in the manner described above were evaluated according to the methods indicated below.
As a result, pliability of the polyurethane foam is impaired. The following provides explanation of an embodiment of the present invention.
Recovery of fluorinated surfactants from a basic anion exchange resin having quaternary ammonium groups. As has been described above, the polyurethane foam of the present invention has low density and low hardness. Ji, the urethane resin of the present invention preferably contains at least one of a sulfonic acid group, a carboxyl group and a hydroxyl group for the hydrophilic group.
Polystyrene foam containing a modifier-free nanoclay and having improved fire protection performance.
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In other words, pliability is ensured. This series can satisfy any fields of customer needs. With variety of density lineup, this series corresponds various application, such as seals, vibration insulation and shock absorption. Glass mis ceramics industries Polyurethane foam that is formed using an aliphatic isocyanate with a hydrophobic group as a raw material is resistant to hydrolysis, and the function thereof as a cushioning material or packing material and the like is enhanced.
TM changes hardness depending on speed and offers shape traceability around body temperature. Enhancing proton conductivity of proton exchange membranes.
The following provides a more detailed explanation of the present invention by indicating examples thereof.
The polyurethane foam according to claim 1, wherein an amount of the anionic foam stabilizer is 2 parts by weight to 60 parts by jix in case that an amount of the urethane emulsion is parts by weight. In addition, jix hardness MPa of the polyurethane foams was measured. However, for example, the number of monomers may be 2 and the number of functional groups may be 2 to less than 3.
Carbonate-based urethane emulsion, pH 8, hydrophilic group: