Non-yellowing polyurethane memory cotton and preparation method thereof

A technology of polyurethane and memory foam, which is applied in the field of non-yellowing polyurethane memory foam and its preparation, can solve the problems of no related research on the preparation of non-yellowing memory foam, save manpower and equipment costs, improve quality stability, and operate easy effect

Active Publication Date: 2019-10-08
FUJIAN GENEROUS SLEEP TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no relevant research on the preparation of non-yellowing memory foam

Method used

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  • Non-yellowing polyurethane memory cotton and preparation method thereof
  • Non-yellowing polyurethane memory cotton and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A kind of non-yellowing polyurethane memory cotton is made of the raw materials comprising the following parts by weight:

[0033]

[0034] The non-yellowing polyurethane memory foam in this embodiment is composed of selected raw materials, and the content of each raw material is optimized, and an appropriate proportion of high-activity polyether polyol, slow rebound polyether, polymer polyol, chain extender, Foam stabilizer, composite catalyst, water and aliphatic isocyanate not only give full play to their respective advantages, but also complement each other and promote each other to improve the quality stability of the product. The prepared non-yellowing polyurethane memory foam has high light fastness, durability Phenol has good yellowing performance, high smoke resistance level, long slow rebound recovery time, and low ball rebound rate.

[0035] This embodiment selects high activity polyether polyol, slow resilience polyether, polymer polyol as polyol with app...

Embodiment 2 to 4

[0054] The raw material formula of embodiment 2 to 4 is as shown in table 1 and table 2 below:

[0055] Table 1

[0056] Polyol 1 Functionality 3, molecular weight 3800, hydroxyl value 44mg KaOH / g, ethylene oxide 70%, primary hydroxyl 80% Polyol 2 Functionality 4, molecular weight 5300, hydroxyl value 42mg KaOH / g, ethylene oxide 75%, primary hydroxyl 75% Polyol 3 Starting from glycerol, functionality 3, molecular weight 700, hydroxyl value 240mg KaOH / g Polyol 4 Starting from glycerol, functionality 3, molecular weight 550, hydroxyl value 306mg KaOH / g Polyol 5 Styrene acrylonitrile graft polyether, hydroxyl value 26, solid content 43%, molecular weight 4000 Polyol 6 Styrene acrylonitrile grafted polyether, hydroxyl value 22, solid content 45%, molecular weight 5000

[0057] Note: "polyol 1 and polyol 2" in Table 1 are any one of the high-activity polyether polyols described in the present invention; Any one of the polyethers; "p...

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Abstract

The invention discloses non-yellowing polyurethane memory cotton and a preparation method thereof. The non-yellowing polyurethane memory cotton is prepared from the following raw materials in parts byweight: 50-80 parts of high activity polyether polyols, 5-40 parts of slow rebound polyether, 2-35 parts of polymer polyols, 1-10 parts of chain extender, 0.2-3 parts of foam stabilizer, 0.5-3 partsof composite catalyst, 1-4 parts of water and 30-60 parts of aliphatic series isocyanate. The non-yellowing polyurethane memory cotton is composed of selected raw materials, the content of each raw material is optimized, the high activity polyether polyols, the slow rebound polyether, the polymer polyols, the chain extender, the foam stabilizer, the composite catalyst, the water and the aliphaticseries isocyanate are selected with proper proportions, respective advantages are given full play, mutual complementation and improvement are achieved, the quality stability of products is improved, the prepared non-yellowing polyurethane memory cotton is high in color fastness to light, good in phemol yellowing resistance, high in smoke resistance, long in slow rebound recovery time and low in falling sphere rebound rate.

Description

technical field [0001] The invention relates to the field of polyurethane foam material products, in particular to a non-yellowing polyurethane memory cotton and a preparation method thereof. Background technique [0002] Polyurethane is a polymer containing carbamate groups in the main chain of macromolecules, called polyurethane. The polyester type is a polyurethane prepared from diisocyanate and hydroxyl-terminated polyester. Polyether polyurethane is a polyurethane prepared from diisocyanate and hydroxyl-terminated polyether. According to the type of isocyanate, it is divided into aromatic isocyanate (commonly used such as toluene diisocyanate or TDI and diphenylmethane diisocyanate MDI) and aliphatic isocyanate (such as isophorone diisocyanate IPDI, etc.). Aromatic isocyanate system has strong availability of raw materials, mature production and processing, and its products are widely used in the world. The aliphatic isocyanate system is limited by raw materials and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/75C08G18/66C08G18/48C08G18/63C08G18/32C08G101/00
CPCC08G18/3206C08G18/3275C08G18/4072C08G18/4816C08G18/4829C08G18/4837C08G18/632C08G18/6674C08G18/6677C08G18/6688C08G18/755C08G18/758C08G2110/0083
Inventor 杨洪启陈俊铃叶艺锋
Owner FUJIAN GENEROUS SLEEP TECH CO LTD
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