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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What is claimed is: TM changes hardness depending on speed and offers shape traceability around body temperature. The stirred and mixed raw materials are then applied to is the surface of a sheet that has low air permeability, and after adjusting to a prescribed thickness with a doctor knife and the like, the coated raw materials are dried by heating with an oven or drying oven and the like.
However, the present invention is not limited to the embodiment, and is able to be carried out in various aspects that have been subjected to various alterations and modifications based on the knowledge of a person with ordinary skill in the art.
Sheet-like packing materials formed from polyurethane foam such as gaskets for display nis of cellular telephones have low compressive residual strain due to their fine cell structure and are superior for use as packing materials.
Lauryl betaine, pH 7. However, when the formed froth is heated kk drying, the bubbles disappear and a foam is not formed. The method for producing polyurethane foam according to claim 12, wherein the aliphatic isocyanate has 2 or fewer monomers and 2 or fewer functional groups.
Carbonate-based urethane emulsion, pH 8, hydrophilic group: For more detailed product data, please place a request via our online inquiry form. A urethane emulsion 3 to be subsequently described is an example of such a urethane emulsion having a hydrophilic group. As a result, sheet-like polyurethane foam is formed. Recovery of fluorinated surfactants from a basic anion exchange resin having quaternary ammonium groups.
Double-sided adhesive tapes were used to adhere or stick the PET films. Company organization, management and quality. A shock absorbent type with the same contour-fitting as the TM grade but two times less compression set. However, there is no need 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 present inventions are related to polyurethane foam formed by foaming a urethane emulsion and production method thereof. As a result, the dispersibility of the urethane resin improves. Polyurethane foam is formed by foaming raw materials that includes either an aliphatic isocyanate or a melamine derivative, a urethane emulsion, and an anionic foam stabilizer.
However, the compressive residual strain of polyurethane foam obtained using an aliphatic isocyanate having a number of monomers of 3 or more and a number of functional groups of 3 or more is slightly lower than the compressive residual strain of polyurethane foam obtained using an aliphatic isocyanate having a number of monomers of 2 or less and a number of functional groups of 2 or less.
As has been described above, the polyurethane foam of the present invention has low density and low hardness. FIELD The present inventions are related to polyurethane foam formed by foaming a urethane emulsion and production method thereof.
After applying the stirred and mixed raw materials froth to the surface of a sheet that has low air permeability and adjusting the thickness of the applied raw materials by means of a roll coater, doctor knife, comma coater or slot die coater and the like to a prescribed thickness, the raw materials are dried by heating with an oven or a drying oven and the like. In addition, an isocyanate 601 used as a urethane resin raw material may be used for the jix, and examples thereof include aromatic isocyanates, aliphatic isocyanates and alicyclic isocyanates.
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JIS K – Flexible polyurethane foam for cushion (FOREIGN STANDARD)
The method for producing polyurethane foam according to claim 12, wherein the aliphatic isocyanate has 3 or more monomers and 3 or more functional groups. In particular, the aliphatic isocyanate preferably has two functional groups such as isocyanate groups. Polyurethane foam having hardness within these ranges has adequate pliability.
In addition, the urethane emulsion, which is a raw material of the polyurethane foam, is an emulsion in which a spherical urethane resin namely, polyurethane having a diameter of 0. By this, it is possible to obtain polyurethane foam that is low density, pliable and resistant to collapse, i.
The method for producing polyurethane foam according to claim 12, wherein the anionic foam stabilizer includes both ammonium stearate and mis alkylsulfosuccinate. As a result, formed is a polyurethane foam 18 that has high strength high tensile strength and in which compressive residual strain is low.
Polyurethane foam is used in products in various fields due to its considerable pliability and cushioning properties. Polystyrene foam containing a modifier-free nanoclay and having improved fire protection performance.
For example, it is used as cushioning materials, packing materials, gaskets and sealing materials of communication equipment, electronic equipment or the like. This measured value is preferably 0.
Furthermore, 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.
Shipping Delivery Order tracking Returns. In another example of the present invention, the isocyanate group 4 of the aliphatic isocyanate 2 and a hydrophilic group such as a carboxyl group or hydroxyl group of the polyurethane molecules 12 further react, and the aliphatic isocyanate 2 and polyurethane molecules 12 are chemically bonded.
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. While maintaining the same basic characteristics, we have added a series with new features, like jie friction, high slidability and high surface strength, through special surface treatment. Japanese Laid-open Patent Publication No. Mining and minerals In other words, anionic foam stabilizers are not used as foam stabilizers in the polyurethane foams of Comparative Examples 1 and 2.
The polyurethane foam according to claim 1, wherein an amount of the anionic foam stabilizer is 2 parts by weight to 60 parts by weight in case that an amount of the urethane emulsion is parts by weight.
PORON® FootPad Physical Properties/Product Availability
In addition, although olefin-based foam and acrylics-based foam are able to be used as sheet-like packing materials and the like and are able to improve pliability of packing materials, olefin-based foam and is acrylics-based foam generally have high compressive residual strain and collapse easily. In this manner, the use of either an aliphatic isocyanate Crosslinking Agents 1 to 5, 8 and 9 or a melamine derivative Crosslinking Agent 6 as a crosslinking agent in the raw materials of polyurethane foam makes it possible to realize polyurethane foam having high recovery properties.
Hydrophilic HDI isocyanurate, number of functional groups: Can be used as the optimal secondary water sealant for for sealing water in public construction and civil engineering as well as for waterproofing water supply systems in household equipment.