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A kind of pore opener and its preparation method and application

A cell-opening agent and dispersant technology, which is applied in the field of slow-rebound sponge preparation, can solve problems such as high dosage, poor cell-opening effect, and precipitation, and achieve soft hand feeling, high-efficiency cell-opening performance, and good stability

Active Publication Date: 2022-07-26
上海抚佳精细化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the technical problem to be solved in the present invention is to overcome the poor opening effect of the cell opening agent used for polyurethane slow rebound sponge in the prior art, the high dosage, easy precipitation from the system and the need to add a cell opening auxiliary agent to cooperate Use defects such as, thereby provide a kind of opening agent and its preparation method and application

Method used

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  • A kind of pore opener and its preparation method and application
  • A kind of pore opener and its preparation method and application
  • A kind of pore opener and its preparation method and application

Examples

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Embodiment 1

[0087] This embodiment provides a pore-opening agent, including magnesium stearate and a dispersant, wherein the dispersant includes dipropylene glycol (DPG) and difunctional polyether (equivalent weight is 200, D204);

[0088] The preparation method of the above-mentioned pore-opening agent comprises the following steps,

[0089] Three-roll mill grinds granular magnesium stearate into micro-particles until the particle size distribution range is within 0.4-50 μm, and the average particle size is 5-10 μm, wherein the particle size is analyzed and detected by BT-9300S laser particle size distribution analyzer;

[0090] Then, the ground magnesium stearate and the dispersing agent are stirred and uniformly dispersed with a high-speed disperser to obtain a milky white suspension, that is, the stearate pore-opening agent ST-CO-1.

[0091] The mass ratio of magnesium stearate, DPG and D204 in the pore-opening agent is 40:30:30, the particle size of the particles in the pore-opening ...

Embodiment 2

[0093] This embodiment provides a pore opening agent, including zinc stearate and a dispersant, wherein the dispersant includes dipropylene glycol (DPG) and difunctional polyether (equivalent weight is 200, D204);

[0094] The preparation method of the above-mentioned pore-opening agent comprises the following steps,

[0095] The three-roll mill grinds the granular zinc stearate into micro-particles until the particle size distribution range is within 0.4-50 μm, and the average particle size is 5-10 μm, and the particle size is analyzed and detected by a BT-9300S laser particle size distribution analyzer;

[0096] Then, the ground zinc stearate and the dispersing agent are stirred and uniformly dispersed with a high-speed dispersing machine to obtain a milky white suspension, that is, a stearate pore-opening agent ST-CO-2.

[0097] The mass ratio of zinc stearate, DPG and D204 in the pore-opening agent is 45:20:35, the particle size of the particles in the pore-opening agent i...

Embodiment 3

[0099] This embodiment provides a pore-opening agent, including magnesium stearate and a dispersant, wherein the dispersant includes dipropylene glycol (DPG) and difunctional polyether (equivalent weight is 200, D204);

[0100] The preparation method of the above-mentioned pore-opening agent comprises the following steps,

[0101] Three-roll mill grinds granular magnesium stearate into micro-particles until the particle size distribution range is within 0.4-50 μm, and the average particle size is 5-10 μm, wherein the particle size is analyzed and detected by BT-9300S laser particle size distribution analyzer;

[0102] Then, the ground magnesium stearate and the dispersing agent are stirred and uniformly dispersed with a high-speed disperser to obtain a milky white suspension, that is, a stearate pore opener ST-CO-3.

[0103] The mass ratio of magnesium stearate, DPG and D204 in the pore-opening agent is 70:15:15, the particle size of the particles in the pore-opening agent is ...

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Abstract

The invention belongs to the technical field of slow-resilience sponge preparation, and in particular relates to a pore-opening agent and a preparation method and application thereof. The pore-opening agent provided by the present invention comprises a divalent metal salt of stearic acid with a melting point of 100-160° C. and a dispersing agent; the dispersing agent is alcohol and / or polyether; the particle size of the particles in the pore-opening agent is 0.4-160° C. 50 μm; the average particle size of the particles in the pore-opening agent is 5-10 μm. The pore-opening agent can be used to prepare slow-rebound sponge products with a density of D25-D100, and has a good pore-opening effect. high rate. The pore-opening agent has efficient pore-opening performance, making the air permeability of the slow-resilience sponge reach 30-70L / min, 75% permanent compression set @ 70℃, and the 22hrs test value is less than 5%, and still maintains the slow-resilience sponge. Characteristics, the slow rebound time is 1‑4s, and the hand feels soft.

Description

technical field [0001] The invention belongs to the technical field of slow-resilience sponge preparation, and in particular relates to a pore-opening agent and a preparation method and application thereof. Background technique [0002] Polyurethane flexible foam has a wide range of applications, including furniture, daily consumer goods, automotive and other industrial parts, as well as sound-absorbing and shock-absorbing, noise-reducing cushioning packaging, sports protection, medical and safety equipment, such as sofas, mattresses, etc. , headphones, masks, seats, etc. One of the subdivision applications of polyurethane flexible foam is slow rebound sponge, also known as viscoelastic VE sponge or memory foam, which shows a time response delay after applying external force, low rebound elasticity, and takes a long time to recover after compression. original shape. This characteristic is usually related to the glass transition temperature (Tg) of polyurethane, which can e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K5/098C08G18/48C08G18/63C08G101/00
CPCC08K5/098C08G18/4837C08G18/4816C08G18/632C08G18/4072C08G2110/0008C08G2101/00
Inventor 柯其武李玉博
Owner 上海抚佳精细化工有限公司
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