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High-density flame-retardant rigid polyurethane foam and preparation method thereof

A technology of rigid polyurethane and foam plastics, applied in the field of rigid polyurethane foam, can solve problems such as unreasonable addition of additives, difficulty in improving foam quality, uneven quality of molded foam products, etc., to achieve reasonable proportioning and increase yield , The effect of high-quality finished products

Inactive Publication Date: 2015-01-14
李肃
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing high-density polyurethane rigid foam, due to its component ratio and process defects, makes the quality of molded foam products uneven, and the unreasonable addition of various additives also makes the final quality of the foam difficult. improve

Method used

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Embodiment Construction

[0015] The present invention is further explained and described below in combination with preferred embodiments.

[0016] The high-density flame-retardant rigid polyurethane foam of the present invention is made of polyether polyols, auxiliary agents, and reinforcing materials, wherein the mass parts of the auxiliary agents used are based on 100 parts of the total amount of polyether polyols; polyether polyols Polyols include 50-60 parts by mass of sucrose polyether polyol, 30-40 polyether diol, and 5-10 pentaerythritol polyether polyol; the additives include trichloroisopropyl phosphate (TCPP) and A flame retardant composed of dimethyl methyl phosphate (DMMP). Wherein within a certain range, the greater the functionality of the polyether polyol, the better the mechanical properties of the resulting foam, but the smaller the compatibility of the material, in the present invention, the sucrose polyether polyol with a large functionality and functional The low-degree polyether ...

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Abstract

The invention relates to polyurethane rigid foam, and concretely relates to high-density flame-retardant rigid polyurethane foam which is appropriate in material formula, protrude in foamed material performances and stable in quality, and a preparation method thereof. The foam plastic is prepared from polyether polyols, an auxiliary agent and a reinforcing material, and by taking the total mass proportions of the auxiliary agent and the polyether polyols as 100 parts, the polyether polyols comprise, 50-60 parts of cane sugar polyether polyol, 30-40 parts of polyether diol and 5-10 parts of pentaerythritol polyether polyol, and the auxiliary agent is a flame retardant composed of tris(2-chloropropyl)phosphate (TCPP) and dimethyl methylphosphonate (DMMP). The preparation method of the foam plastic comprises: weighing the polyether polyols, the auxiliary agent and the reinforcing material according to the formula, adding the auxiliary agent and the reinforcing material into the polyether polyols, stirring for 10 s for mixing by an electric stirrer, then pouring into a die, foaming, and after thorough slaking of the foam is finished, stripping form the mold for molding.

Description

technical field [0001] The invention relates to a rigid polyurethane foam, in particular to a high-density flame-retardant rigid polyurethane foam and a preparation method thereof. Background technique [0002] Rigid polyurethane foam, referred to as rigid polyurethane foam, is second only to soft polyurethane foam in the amount of polyurethane products. Polyurethane rigid foam mostly has a closed-cell structure, which has excellent characteristics such as good heat insulation effect, light weight, high specific strength, and convenient construction. It also has the characteristics of sound insulation, shockproof, electrical insulation, heat resistance, cold resistance, and solvent resistance. It is widely used in Insulation materials for refrigerators and freezers, cold storage, refrigerated trucks and other insulation materials, buildings, storage tanks and pipeline insulation materials, a small amount is used in non-insulation occasions, such as imitation wood, packaging ...

Claims

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Application Information

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IPC IPC(8): C08G18/48C08K5/521C08K7/14C08G101/00
CPCC08G18/4804C08G18/4883C08G18/7664C08J9/144C08J2203/142C08K5/521C08K7/14C08K2201/003C08K2201/014C08G2110/0025C08G2110/0066
Inventor 李肃
Owner 李肃
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