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Formula and preparation technology of modified polyurethane

A technology of polyurethane modification, applied in the field of polyurethane production, to achieve the effect of improving friction coefficient, large friction force and improving practical effect

Inactive Publication Date: 2018-03-27
杨磊
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the development of society, more and more gloves are made of polyurethane. Now there are many gloves used in sports, which need to provide greater friction during sports. Many polyurethane materials cannot meet this requirement. Require

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A formula of modified polyurethane, consisting of the following raw materials in parts by weight:

[0025] 90 parts of natural rubber, 100 parts of acetone, 80 parts of toluene, 70 parts of polyester polyol, 40 parts of butanediol, 30 parts of silicon dioxide, 20 parts of toluene diisocyanate, 6 parts of catalyst, 4 parts of anti-aging agent.

[0026] For the pretreatment method of natural rubber: mix the natural rubber raw material with dibasic anhydride, add it into the three-necked flask, under the protection of nitrogen, use magnetic stirring to disperse, and keep the temperature of the three-necked flask at 300°C-340°C;

[0027] Its preparation process comprises the following steps:

[0028] (1) Mix the raw materials according to the formula and put them into the grinder for grinding, take out the ground powder and put it into the reaction kettle, keep the temperature at 85°C-95°C, and the air pressure at 3MPa.

[0029] (2) Take out the solution in the reaction ke...

Embodiment 2

[0034] A formula of modified polyurethane, consisting of the following raw materials in parts by weight:

[0035] 95 parts of natural rubber, 105 parts of acetone, 85 parts of toluene, 75 parts of polyester polyol, 45 parts of butanediol, 35 parts of silicon dioxide, 25 parts of toluene diisocyanate, 7 parts of catalyst, and 5 parts of anti-aging agent.

[0036] For the pretreatment method of natural rubber: mix the natural rubber raw material with dibasic anhydride, add it into the three-necked flask, under the protection of nitrogen, use magnetic stirring to disperse, and keep the temperature of the three-necked flask at 300°C-340°C;

[0037] Its preparation process comprises the following steps:

[0038] (1) Mix the raw materials according to the formula and put them into the grinder for grinding, take out the ground powder and put it into the reaction kettle, keep the temperature at 85°C-95°C, and the air pressure at 3MPa.

[0039] (2) Take out the solution in the reactio...

Embodiment 3

[0044] A formula of modified polyurethane, consisting of the following raw materials in parts by weight:

[0045] 100 parts of natural rubber, 110 parts of acetone, 90 parts of toluene, 90 parts of polyester polyol, 50 parts of butanediol, 40 parts of silicon dioxide, 30 parts of toluene diisocyanate, 8 parts of catalyst, 6 parts of anti-aging agent.

[0046] For the pretreatment method of natural rubber: mix the natural rubber raw material with dibasic anhydride, add it into the three-necked flask, under the protection of nitrogen, use magnetic stirring to disperse, and keep the temperature of the three-necked flask at 300°C-340°C;

[0047] Its preparation process comprises the following steps:

[0048] (1) Mix the raw materials according to the formula and put them into the grinder for grinding, take out the ground powder and put it into the reaction kettle, keep the temperature at 85°C-95°C, and the air pressure at 3MPa.

[0049] (2) Take out the solution in the reaction k...

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PUM

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Abstract

The invention discloses a formula of modified polyurethane. The formula comprises, by weight, 50 to 60 parts of iron tailings, 3 to 4 parts of sodium carbonate, 5 to 6 parts of calcium oxide, 2 to 3 parts of borax, 30 to 40 parts of quartz sand and 8 to 9 parts of alumina. A preparation method of the modified polyurethane comprises putting raw materials prepared according to the formula into a planetary ball mill, carrying out ball milling mixing for 1.5h, putting the mixture into a corundum crucible, heating the mixture to 1450-1500 DEG C in a muffle furnace at a heating rate of 5-6 DEG C / min, keeping the temperature of 1450-1500 DEG C for 3-4h, pouring a part of molten glass into water, carrying out water quenching, putting the other part of the molten glass into a mold preheated to 600DEG C, after molding and releasing, fast putting the model into the muffle furnace, carrying out annealing at 600 DEG C for 5h, grinding the glass subjected to water quenching to obtain powder of 74 microns, measuring a DSC curve through a thermal gravimetric analyzer, increasing the room temperature to 1000 DEG C, determining an endothermic valley and an exothermic peak, wherein the endothermic valley represents a glass transition temperature and the exothermic peak represents a crystallization temperature, determining the optimum nucleation temperature and the crystallization temperature ofthe microcrystalline glass according to the DSC curve and carrying out crystallization and nucleation.

Description

technical field [0001] The invention relates to the technical field of polyurethane production, in particular to a formula and preparation process of modified polyurethane. Background technique [0002] Polyurethane material is the abbreviation of polyurethane, the English name is polyurethane, it is a kind of polymer material. Polyurethane is an emerging organic polymer material, known as the "fifth largest plastic", and is widely used in many fields of the national economy because of its excellent performance. The product application fields involve light industry, chemical industry, electronics, textile, medical treatment, construction, building materials, automobile, national defense, aerospace, aviation, etc. Polyurethane slurry is used as coating to prepare polyurethane synthetic leather and artificial leather. Polyurethane synthetic leather has soft and natural luster, soft hand feeling and strong genuine leather appearance. It has the advantages of good cold resista...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L7/00C08L75/06C08K3/36C08G18/76C08G18/66C08G18/42C08G18/32A63B71/14
CPCA63B71/141C08G18/3206C08G18/42C08G18/664C08G18/7614C08L7/00C08L75/06C08K3/36
Inventor 杨磊
Owner 杨磊
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