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High-density conductive polyurethane foam, preparation method thereof and adhesive tape

A polyurethane, high-density technology, applied in the field of polyurethane foam products, can solve the problems of uneven distribution of high-density polyurethane foam, poor conductivity, low density of conductive polyurethane foam, etc., to achieve good conductivity, high conductivity, high The effect of conductivity

Inactive Publication Date: 2020-09-29
HUNAN PROVINCE PURUIDA INTERIOR MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention provides a high-density conductive polyurethane foam and its preparation method, which is used to solve the technical problems of low density of conductive polyurethane foam or uneven distribution of high-density polyurethane foam and poor conductivity in the prior art

Method used

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  • High-density conductive polyurethane foam, preparation method thereof and adhesive tape
  • High-density conductive polyurethane foam, preparation method thereof and adhesive tape
  • High-density conductive polyurethane foam, preparation method thereof and adhesive tape

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preparation example Construction

[0021] The embodiment of the present invention provides a preparation method of high-density conductive polyurethane foam, the preparation method comprising the following steps:

[0022] Step 1: Add 10-35 parts of ionic liquid 1,3-dimethylimidazole dimethyl phosphate salt and 5-10 parts of water into the reaction kettle, mix well and heat up to 45-52°C, then add 15-30 After mixing evenly, lower the reactor to 35-40°C, then add 70-110 parts of polyether polyol and 6-10 parts of chain extender in sequence, after mixing evenly, lower the reactor to normal temperature, and then Add 1 to 3 parts of catalyst and 2 to 5 parts of foam stabilizer into the reaction kettle and mix uniformly to obtain material A. The weight ratio of the 1,3-dimethylimidazole phosphate dimethyl salt to the graphene is (0.5~1.5): 1;

[0023] Step 2: Weigh 120 parts by weight of diphenylmethane diisocyanate as material B and add it to an ice-water bath. The temperature of the ice-water bath is 1-3°C, and th...

Embodiment 1 7 comparative Embodiment 1～4

[0039] Preparation of Examples One to Seven and Comparative Examples 1 to 4 Polyurethane Foam

Embodiment 1

[0041] This embodiment provides a method for preparing high-density conductive polyurethane foam, comprising the following steps:

[0042] Step 1: Add 10 parts of ionic liquid 1,3-dimethylimidazole dimethyl phosphate and 5 parts of water into the reaction kettle, mix well and heat up to 48°C, then add 20 parts of graphene, mix well, The reactor was lowered to 36°C, and then 70 parts of polyether polyol (50 parts of polyether polyol 1, 17.5 parts of polyether polyol 2 and 2.5 parts of polyether polyol 3), 6 parts of chain extender (1 , 4-butanediol), after mixing evenly, lower the reactor to normal temperature, then add 1.8 parts of catalyst (0.6 parts of triethylenediamine, 1.2 parts of stannous octoate), and 2 parts of foam stabilizer to the reactor in sequence Mix evenly to obtain material A;

[0043] Step 2: Weigh 120 parts by weight of diphenylmethane diisocyanate as material B and add it to an ice-water bath. The temperature of the ice-water bath is 1-3°C, and the materi...

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Abstract

The invention provides high-density conductive polyurethane foam, a preparation method thereof and an adhesive tape. The preparation method comprises the following steps: adding 1, 3-dimethylimidazoledimethyl phosphate and water into a reaction kettle; uniformly mixing, heating to 45-52 DEG C, adding graphene, uniformly mixing, cooling the reaction kettle to 35-40 DEG C, sequentially adding polyether polyol and a chain extender, uniformly mixing, cooling the reaction kettle to normal temperature, sequentially adding a catalyst and a foam stabilizer into the reaction kettle, and uniformly mixing to obtain a material A; weighing diphenylmethane diisocyanate as a material B, adding the diphenylmethane diisocyanate into an ice-water bath pan, and uniformly stirring the material A and the material B to obtain a prepolymer; and injecting the prepolymer into a preheated mold for foaming to obtain the polyurethane foam. The polyurethane foam prepared by the method provided by the invention has high density and high conductivity.

Description

technical field [0001] The invention relates to a polyurethane foam product, in particular to a high-density conductive polyurethane foam, a preparation method thereof, and an adhesive tape. 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] Due to the low density of polyurethane foam, the small size of cell walls and pillars, it is difficult to form an effective conductive path in it, and it is even more difficult to improve its conductive performance. At pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/66C08G18/48C08G18/32C08K9/10C08K9/04C08K3/04C08K5/521C09J7/26C08G101/00
CPCC08G18/6674C08G18/4804C08G18/3206C08K9/10C08K9/04C08K3/042C08K5/521C09J7/26C08K2201/001C09J2400/243C09J2475/006
Inventor 唐勇军
Owner HUNAN PROVINCE PURUIDA INTERIOR MATERIAL CO LTD