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A method for improving thermal insulation performance of polyurethane plastic foam insulation pipe

A thermal insulation performance, plastic foam technology, applied in the field of new functional materials, can solve the problems of short maintenance time, poor reinforcement effect, high production cost, etc., and achieve the effects of improving weather resistance, promoting development, and improving development and utilization

Active Publication Date: 2021-08-06
广州仕天材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing solutions mostly use anti-ultraviolet agents and various synergistic fillers to improve the performance of polyurethane insulation pipes, but cannot fundamentally solve the functional shortcomings caused by the matrix structure and molecular properties, and the enhancement effect achieved is not good. , the maintenance time is short, and the preparation cost is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A method for improving the thermal insulation performance of polyurethane plastic foam insulation pipes. During the synthesis of polyurethane plastic foam, a calcium-based functional organic composite material with a mass fraction of 0.45% is added to the synthetic raw material of polyurethane plastic foam for modification to obtain modified polyurethane Plastic foam material; the preparation method of the calcium-based functional organic composite material comprises the following steps:

[0020] (1) Weigh 20 grams of alumina and hydroxyapatite according to the mass ratio of 5:2, grind them into powder, mix them into a beaker, add 100 ml of concentrated sulfuric acid into the beaker under stirring, and keep stirring for 50 Minutes, after cooling to 20°C, add saturated sodium carbonate solution to neutralize until the pH value is between 3.6-3.8, then add 4.5 grams of potassium metaaluminate to the beaker, and continue to stir the reaction for 30 minutes under heating in ...

Embodiment 2

[0030] A method for improving the thermal insulation performance of polyurethane plastic foam insulation pipes. During the synthesis of polyurethane plastic foam, a calcium-based functional organic composite material with a mass fraction of 0.47% is added to the synthetic raw material of polyurethane plastic foam for modification to obtain modified polyurethane Plastic foam material; the preparation method of the calcium-based functional organic composite material comprises the following steps:

[0031](1) Weigh 21 grams of alumina and hydroxyapatite according to the mass ratio of 5.5:2.5, grind them into powder, mix them into a beaker, add 105 ml of concentrated sulfuric acid into the beaker under stirring, and keep stirring for 55 Minutes, after cooling to 23°C, add saturated sodium carbonate solution to neutralize until the pH value is between 3.6-3.8, then add 4.8 grams of potassium metaaluminate to the beaker, and continue to stir the reaction for 35 minutes under heating ...

Embodiment 3

[0041] A method for improving the thermal insulation performance of polyurethane plastic foam insulation pipes. During the synthesis of polyurethane plastic foam, a calcium-based functional organic composite material with a mass fraction of 0.50% is added to the synthetic raw material of polyurethane plastic foam for modification to obtain modified polyurethane Plastic foam material; the preparation method of the calcium-based functional organic composite material comprises the following steps:

[0042] (1) Weigh 22 grams of alumina and hydroxyapatite according to the mass ratio of 6:3, grind them into powder, mix them into a beaker, add 110 ml of concentrated sulfuric acid into the beaker under stirring, and keep stirring for 60 Minutes, after cooling to 25°C, add saturated sodium carbonate solution to neutralize until the pH value is between 3.6-3.8, then add 5.0 grams of potassium metaaluminate to the beaker, and continue to stir the reaction for 40 minutes under heating in ...

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Abstract

The invention relates to the technical field of new functional materials, and discloses a method for improving the thermal insulation performance of polyurethane plastic foam insulation pipes. The calcium-based functional organic composite material is modified to obtain a modified polyurethane plastic foam material. Through structural modification, the prepared modified polyurethane plastic foam material has higher thermal insulation effect, flame retardancy and strength. At the same time, the sound insulation, temperature difference resistance and weather resistance of the foam material are significantly improved, the thermal conductivity is in the range of {0.012‑0.014w / (m·k)}, and the service life is extended by more than ten years.

Description

technical field [0001] The invention belongs to the technical field of new functional materials, and in particular relates to a method for improving the thermal insulation performance of polyurethane plastic foam insulation pipes. Background technique [0002] Polyurethane is a polymer material. It is widely used in daily life, such as paints and coatings in furniture, refrigerators and freezers in household appliances, roof waterproof insulation and interior and exterior wall coatings in the construction industry. It can also be made into various polyurethane materials such as polyurethane soles, polyurethane fibers, polyurethane sealants, etc. Generally speaking, polyurethane products have a wide range of adjustable properties, strong adaptability, biological aging resistance, and moderate prices. [0003] Polyurethane insulation pipe is made of high-functional polyether polyol composite material and polymethyl polyphenyl polyisocyanate as raw materials through chemical ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/76C08G18/66C08G18/48C08G18/38C08J9/08C08J9/14C08G101/00
CPCC08G18/3848C08G18/4804C08G18/4833C08G18/6666C08G18/7664C08G2101/00C08J9/14C08J2203/14C08J2203/184C08J2375/08C08K2201/003
Inventor 文江河郭坤
Owner 广州仕天材料科技有限公司
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