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High-density high-heat-conductivity-coefficient polyurethane foam and preparation method thereof

A technology of polyurethane foam and high thermal conductivity, which is applied in chemical instruments and methods, chemical/physical/physicochemical processes, chemical/physical/physicochemical processes of energy application, etc. It can solve the problem of affecting the effective function of electronic devices and damaging electronic components And other issues

Inactive Publication Date: 2020-10-20
HUNAN PROVINCE PURUIDA INTERIOR MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polyurethane foam tape is often used to connect electronic devices in mobile phones and other electronic devices. If the thermal conductivity is not good, it will affect the effective function of electronic devices. Even when the electronic devices are overloaded, the electronic devices may be damaged due to excessive temperature. components

Method used

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  • High-density high-heat-conductivity-coefficient polyurethane foam and preparation method thereof
  • High-density high-heat-conductivity-coefficient polyurethane foam and preparation method thereof
  • High-density high-heat-conductivity-coefficient polyurethane foam and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] This embodiment provides a preparation method of high-density conductive polyurethane foam, the preparation method comprising the following steps:

[0038] Step 1. Add 35 parts of purified single-walled carbon nanotubes obtained through pretreatment and 20 parts of macroporous molecular sieves into a three-dimensional mixer and mix thoroughly until 40% to 50% of the purified single-walled carbon nanotubes are located in the large Inside the molecular sieve;

[0039]Step 2. Weigh 80 parts of polyol composition (40 parts of polyol 1, 40 parts of polyol 2), 6 parts of chain extender (ethylene glycol) and 7 parts of water into the reaction kettle, and stir evenly at room temperature Finally, the temperature of the reaction kettle was raised to 55°C, and then the purified single-walled carbon nanotubes and macroporous molecular sieves obtained in Step 1 were added to the reaction kettle, and stirred at the first stirring speed of 1600r / min for 1.5h until uniform dispersion ...

Embodiment 6

[0084] 100 parts of diphenylmethane diisocyanate; 67 parts of polyol composition (37 parts of polyol 1, 30 parts of polyol 2); 22 parts of single-walled carbon nanotubes; 14 parts of macroporous molecular sieves; chain extender (glycerin) 5 parts; 4 parts of foaming agent water; 1.5 parts of catalyst (0.5 part of diethanolamine, 1 part of dibutyltin dilaurate); 2 parts of foam stabilizer.

Embodiment 7

[0086] 100 parts of diphenylmethane diisocyanate; 50 parts of polyol composition (27 parts of polyol 1, 23 parts of polyol 2); 25 parts of single-walled carbon nanotubes; 10 parts of macroporous molecular sieves; chain extender (1,4- Butanediol) 7 parts; 8 parts of blowing agent water; 3 parts of catalyst (1 part of diethanolamine, 2 parts of dibutyltin dilaurate); 3 parts of foam stabilizer.

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Abstract

The invention provides high-density high-heat-conductivity-coefficient polyurethane foam and a preparation method thereof. The preparation method comprises the following steps: 1, uniformly mixing purified single-walled carbon nanotubes and a macroporous molecular sieve; 2, adding polyol, a chain extender and water into a reaction kettle, uniformly stirring, heating the reaction kettle to 50-62 DEG C, adding the purified single-walled carbon nanotubes and the macroporous molecular sieve obtained in the step 1 into the reaction kettle, and stirring until the purified single-walled carbon nanotubes and the macroporous molecular sieve are uniformly dispersed; 3, cooling the reaction kettle to normal temperature, sequentially adding the catalyst into the reaction kettle, and uniformly mixing;4, weighing 100 parts by weight of diphenylmethane diisocyanate into the reaction kettle, and stirring for 5-10 minutes to obtain a prepolymer; and 5, adding the prepolymer into ultrasonic microwave synergistic extraction equipment, and carrying out a reaction to obtain the polyurethane foam with high density and high heat conductivity coefficient. The polyurethane foam prepared by the method provided by the invention has high density and high thermal conductivity.

Description

technical field [0001] The invention relates to a polyurethane foam product, in particular to a polyurethane foam with high density and high thermal conductivity and a preparation method thereof. Background technique [0002] Polyurethane foam material is an organic polymer material containing several urethane chain segments obtained by the reaction of polyisocyanate and polyol. Polyurethane materials have excellent mechanical, acoustic, electrical and chemical resistance properties, wide range of hardness, good flexibility, adhesive properties, wear resistance, low temperature resistance and radiation resistance. Polyurethane materials are widely used in automotive, machinery, electronics, packaging, construction, medical, aerospace and other fields. [0003] As we all know, with the development of science and technology, there are more and more types of electronic components, and the connection of circuits tends to be refined and dense. Therefore, great requirements are p...

Claims

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Application Information

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IPC IPC(8): C08G18/66C08G18/62C08G18/48C08G18/32C08K7/26C08K3/04B01J19/10B01J19/12C08G101/00
CPCB01J19/10B01J19/126C08G18/3206C08G18/4063C08G18/4829C08G18/6212C08G18/6674C08G18/6677C08K7/26C08K2201/011C08K3/041
Inventor 唐勇军
Owner HUNAN PROVINCE PURUIDA INTERIOR MATERIAL CO LTD