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High-strength high-temperature-resistant MDI-based slow-rebound polyurethane sponge material and preparation method thereof

A polyurethane sponge, high temperature resistant technology, applied in the field of organic polymer synthesis, can solve the problems of poor combination of inorganic filler and polymer matrix, inorganic filler, influence and other problems, and achieve the effect of excellent thermal stability

Active Publication Date: 2021-11-12
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional main method to improve the high temperature resistance of polymer materials is to use melamine, DOPO, etc. as flame retardants, but the use of such flame retardants often has certain toxicity, and there are also methods of adding inorganic fillers such as white carbon black and expandable graphite. However, the biggest problem with this type of method is that the combination of inorganic fillers and polymer matrix is ​​not good, and there are still traces of these inorganic fillers on the surface of the product, which affects its practical application.

Method used

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  • High-strength high-temperature-resistant MDI-based slow-rebound polyurethane sponge material and preparation method thereof
  • High-strength high-temperature-resistant MDI-based slow-rebound polyurethane sponge material and preparation method thereof
  • High-strength high-temperature-resistant MDI-based slow-rebound polyurethane sponge material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037](1) Preparation of expanded urethane-silica functionalized graphene oxide U-S@EGO:

[0038] First, 1 g expanded graphite (EG), 0.5 g NaNO 3 Add it into a 250 mL round bottom flask, then pour 70 mL of 95wt% concentrated sulfuric acid into it, stir it magnetically for 10 min at a temperature of 4°C, then slowly add 3 g of potassium permanganate (0.5 g every 5 min, and complete the addition in 30 min ), and continued to stir for 8 h after the addition. Then add 50 mL of deionized water, followed by 20 mL of 5wt% H 2 o 2 The solution was oxidized and stirred for 1 h. The mixture was centrifuged, vacuum-filtered with a 0.45 μm filter membrane, washed until neutral, and dried in a blast drying oven at 100°C for 12 h to obtain EGO;

[0039] Add 0.2 g of expanded graphene oxide (EGO) into a beaker filled with 100 mL of anhydrous N,N-dimethylformamide, place it in an ultrasonic cleaner for ultrasonic dispersion for 1 h, and transfer it to a 250 mL beaker filled with nitrogen ...

Embodiment 2

[0050] (1) Preparation of expanded urethane-silica functionalized graphene oxide U-S@EGO: Same as Example 1,

[0051] (2) Preparation of Phosphorylated Corn Starch Modified Wheat Bran Fiber CSP@WBF: Same as Example 1,

[0052] (3) Preparation of high-strength and high-temperature-resistant MDI-based slow-rebound polyurethane sponge:

[0053] Weigh the following raw materials in parts by weight: DALTOPED ® 40 parts of AQUAPUR, 40 parts of PPG3000, 20 parts of POP-3630, 5 parts of U-S@EGO, 1.4 parts of BL-11, 0.5 parts of T-12, 1.1 parts of L-3002, 1.5 parts of deionized water, 1 part of CSP@WBF, MDI 60 copies;

[0054] will DALTOPED ® Add AQUAPUR, PPG3000, and POP-3630 into the container in proportion, then add U-S@EGO, BL-11, T-12, L-3002, and deionized water according to the formula, and stir for 60 seconds under the mixer with a speed of 1500, record For A component;

[0055] Weigh CSP@WBF and MDI into another container and stir for 30 seconds under a mixer with a rotat...

Embodiment 3

[0058] (1) Preparation of expanded urethane-silica functionalized graphene oxide U-S@EGO: Same as Example 1,

[0059] (2) Preparation of Phosphorylated Corn Starch Modified Wheat Bran Fiber CSP@WBF: Same as Example 1,

[0060] (3) Preparation of high-strength and high-temperature-resistant MDI-based slow-rebound polyurethane sponge:

[0061] Weigh the following raw materials in parts by weight: DALTOPED ® 40 parts of AQUAPUR, 40 parts of PPG3000, 20 parts of POP-3630, 1 part of U-S@EGO, 1.4 parts of BL-11, 0.5 parts of T-12, 1.1 parts of L-3002, 1.5 parts of deionized water, 5 parts of CSP@WBF, MDI 60 copies;

[0062] will DALTOPED ® Add AQUAPUR, PPG3000, and POP-3630 into the container in proportion, then add U-S@EGO, BL-11, T-12, L-3002, and deionized water according to the formula, and stir for 60 seconds under the mixer with a speed of 1500, record For A component;

[0063] Weigh CSP@WBF and MDI into another container and stir for 30 seconds under a mixer with a rotat...

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PUM

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Abstract

The invention relates to a high-strength high-temperature-resistant MDI-based slow-rebound polyurethane sponge material and a preparation method thereof, and the preparation method comprises the following steps: firstly, oxidizing expandable graphite to obtain expanded graphene oxide EGO, and functionalizing the EGO to obtain expanded ethyl carbamate-silicon dioxide functionalized graphene oxide U-S@EGO as a high-temperature reinforcing agent; then carrying out phosphorylation modificationon corn starch to obtain phosphorylated corn starch CSP, using the CSP to carry out surface modification on wheat bran fibers, adding a flame-retardant phosphorus element, preparing a flame-retardant carbon source at the same time, and obtaining phosphorylated corn starch modified wheat bran fiber CSP@WBF; and synthesizing the high-temperature reinforcing agentwith a flame-retardant filler according to a specific formula to obtain the high-strength high-temperature-resistant MDI-based slow-rebound polyurethane sponge material.the high-temperature . On the basis of not changing the structure and the mechanical property of the original slow-rebound polyurethane sponge, the physical property stability of the slow-rebound polyurethane sponge at high temperature is greatly enhanced, and the fire resistance can be self-extinguished when the slow-rebound polyurethane sponge is away from fire.

Description

technical field [0001] The invention belongs to the technical field of organic polymer synthesis, and relates to a production method of a polyurethane polymer material, in particular to a high-strength, high-temperature-resistant MDI-based slow-rebound polyurethane sponge and a production method thereof. Background technique [0002] Slow rebound polyurethane sponge, also known as viscoelastic foam or memory foam. Due to the shape memory, energy absorption, sound absorption, shock absorption and other functions of the slow rebound polyurethane sponge, it can be widely used as a shock absorber, sound absorber, and shock absorber in furniture, bedding, auto parts, sports equipment, medical equipment, etc. field. As a padding material, it can distribute body pressure more evenly, reducing fatigue and bottom surface misalignment. But it also has some limitations, especially when it is used in the slow-rebound insole of sports shoes, when the ordinary slow-rebound polyurethane ...

Claims

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Application Information

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IPC IPC(8): C08L75/08C08L3/06C08L99/00C08K9/02C08K9/06C08K3/04C08K3/36C08J9/08C08J9/00C08G18/48C08G18/63
CPCC08J9/08C08J9/0061C08J9/009C08G18/4072C08G18/48C08G18/632C08J2375/08C08J2403/06C08J2499/00C08J2203/02C08K9/02C08K9/06C08K3/042C08K3/36
Inventor 郑玉婴王利
Owner FUZHOU UNIV
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