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PU formula and PU technology for uniform foaming

A formula and uniform technology, applied in the field of PU material production, can solve the problems affecting the stability of PU material, tear strength, inappropriate addition ratio, uneven foaming of polyurethane foam, etc., to achieve good shock absorption effect, Uniform cell distribution and stable size

Inactive Publication Date: 2018-11-09
江苏唯源橡塑制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the production process of traditional polyurethane materials, due to the inappropriate addition of additives or main ingredients, it is easy to cause uneven foaming of polyurethane foam, which affects the stability and tear resistance of PU materials, and then easily causes PU products to fail. Wear resistance and service life

Method used

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  • PU formula and PU technology for uniform foaming
  • PU formula and PU technology for uniform foaming
  • PU formula and PU technology for uniform foaming

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A uniformly foamed PU formula, the PU formula, that is, the polyurethane formula, includes A component and B component, wherein A component includes the following raw materials in parts by weight:

[0032]

[0033]

[0034] The B component includes the following raw materials in parts by weight:

[0035] 30 parts of isocyanate.

[0036] Specifically, water mainly acts as a chain extender, and is also a raw material source for generating carbon dioxide bubbles.

[0037] The isocyanate is selected from one of TDI and MDI or a mixture of the two in any ratio.

[0038] TDI is toluene diisocyanate. The polyurethane products made of it have good stretchability and rebound, which can increase the shock resistance of PU products and make them more comfortable to use. MDI is diphenylmethane diisocyanate, and its reaction speed is fast. It has low dependence on mold temperature, can be produced at low mold temperature, has excellent anti-aging performance, and is low in p...

Embodiment 2

[0066] A uniformly foamed PU formula, the PU formula, that is, the polyurethane formula, includes A component and B component, wherein A component includes the following raw materials in parts by weight:

[0067]

[0068] The B component includes the following raw materials in parts by weight:

[0069] 60 parts of isocyanate.

[0070] Specifically, water mainly acts as a chain extender, and is also a raw material source for generating carbon dioxide bubbles.

[0071] The isocyanate is selected from one of TDI and MDI or a mixture of the two in any ratio.

[0072] TDI is toluene diisocyanate. The polyurethane products made of it have good stretchability and rebound, which can increase the shock resistance of PU products and make them more comfortable to use. MDI is diphenylmethane diisocyanate, and its reaction speed is fast. It has low dependence on mold temperature, can be produced at low mold temperature, has excellent anti-aging performance, and is low in price. The prod...

Embodiment 3

[0100] A uniformly foamed PU formula, the PU formula, that is, the polyurethane formula, includes A component and B component, wherein A component includes the following raw materials in parts by weight:

[0101]

[0102] The B component includes the following raw materials in parts by weight:

[0103] 45 parts of isocyanate.

[0104] Specifically, water mainly acts as a chain extender, and is also a raw material source for generating carbon dioxide bubbles.

[0105] The isocyanate is selected from one of TDI and MDI or a mixture of the two in any ratio.

[0106] TDI is toluene diisocyanate. The polyurethane products made of it have good stretchability and rebound, which can increase the shock resistance of PU products and make them more comfortable to use. MDI is diphenylmethane diisocyanate, and its reaction speed is fast. It has low dependence on mold temperature, can be produced at low mold temperature, has excellent anti-aging performance, and is low in price. The pr...

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Abstract

The invention discloses a PU formula and a PU technology for uniform foaming. The PU formula, that is a polyurethane formula, comprises a component A and a component B, wherein the component A comprises, by weight, 60-80 parts of polyester polyol, 10-30 parts of polyether polyol, 10-20 parts of water, 0.2-0.5 part of a catalyst, 0.1-0.2 part of a foam stabilizer, 4-8 parts of a foaming agent, 14-18 parts of a chain extender, 3-6 parts of a fire retardant and 2-3 parts of an antioxidant, and the component B comprises 30-60 parts by weight of isocyanate. Polyurethane foam prepared in the invention has the characteristics of uniformity in foaming, uniform distribution of foam holes, stable size, and good resistance to high temperature, low temperature, wear and ageing.

Description

technical field [0001] The invention relates to the production field of PU materials, in particular to a PU formula with uniform foaming and a process thereof. Background technique [0002] In the prior art, rubber tires are generally used for wheelchairs or material trolleys, and rubber tires are generally pneumatic tires. In the case of uneven road surfaces, the inside of the rubber carcass tends to generate high heat, thus causing the tires to burst. Now there are some rubber solid tires on the market, and these rubber solid tires often add carbon black and other materials to their raw materials in order to increase their strength, so that black marks will appear on the road surface during tire driving, which in turn will cause environmental pollution. So now there are wheels made of polyurethane material, that is, PU material. [0003] In the production process of traditional polyurethane materials, due to the inappropriate addition of additives or main ingredients, it ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/06C08L75/08C08L83/04C08K3/32C08K3/22C08G18/42C08G18/48C08G18/76C08J9/14
CPCC08G18/3206C08G18/3228C08G18/3243C08G18/3275C08G18/4018C08G18/42C08G18/48C08G18/7607C08G18/7614C08G18/7671C08J9/144C08J9/145C08J2203/142C08J2375/06C08J2375/08C08J2483/04C08K3/2279C08K2003/2227C08K2003/323C08G2110/0083
Inventor 丁宁
Owner 江苏唯源橡塑制品有限公司
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