Flexible polyurethane foam plastic and processing method thereof

A soft polyurethane and foamed plastic technology, applied in the field of polyurethane products, can solve the problems of large foam volume, poor resilience performance, poor use comfort, etc., and achieve the effect of scientific and reasonable ratio and good resilience performance.

Inactive Publication Date: 2019-06-04
天津市大邱庄泡沫塑料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] TDI (toluene diisocyanate) system PU soft foam refers to the PU soft foam made by using toluene diisocyanate as the raw material of PU soft foam. The apparent density of TDI system PU soft foam is relatively low, the foaming volume is large, and the handle is comfortable. However, it generally has the disadvantage of poor rebound performance, which leads to insufficient support and poor comfort, which limits its application in sofa cushions, sofa backrests, sofa armrests, vehicle seats, mattresses and other industries. also limits its own value

Method used

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  • Flexible polyurethane foam plastic and processing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A flexible polyurethane foam:

[0029] In parts by weight, the following components are included: 100 parts of polyether polyol, 30 parts of toluene diisocyanate, 1 part of water, 0.1 part of triethylenediamine, 0.1 part of stannous octoate, 0.3 part of silicone oil, and 23 parts of fiber reinforced composition parts, wherein, by weight, the fiber reinforced composition comprises 2 parts of carbon fiber, 5 parts of spandex fiber, 14 parts of bamboo fiber, and 2 parts of coupling agent; coupling agent is selected silane coupling agent, and antioxidant is selected ultraviolet absorber UV -531, the specifications of the three fibers are all 100D, and the length is 4mm; the preparation steps include:

[0030] S1, in parts by weight, mixing the raw material components of the fiber reinforced composition for 20 minutes at 500 r / min to obtain a fiber reinforced composition;

[0031] S2, in parts by weight, the fiber reinforced composition is mixed with the remaining component...

Embodiment 2

[0033] A flexible polyurethane foam:

[0034] In parts by weight, the preparation raw materials include the following components: 100 parts of polyether polyol, 40 parts of toluene diisocyanate, 3 parts of water, 0.3 part of triethylenediamine, 0.3 part of stannous octoate, 0.7 part of silicone oil, fiber reinforced combination 25 parts, wherein, by weight, the fiber reinforced composition comprises 3 parts of carbon fiber, 6 parts of spandex fiber, 16 parts of bamboo fiber, 2.5 parts of coupling agent, and 2.3 parts of antioxidant; the coupling agent is selected from silane coupling agent, Antioxidant uses ultraviolet absorber UV-531, the specifications of the three fibers are all 120D, and the length is 5mm;

[0035] Preparation steps include:

[0036] S1, in parts by weight, mixing the raw material components of the fiber-reinforced composition for 25 minutes at 550 r / min to obtain a fiber-reinforced composition;

[0037] S2, in parts by weight, the fiber-reinforced compo...

Embodiment 3

[0039] A flexible polyurethane foam:

[0040] In parts by weight, the raw materials for preparation include the following components: 100 parts of polyether polyol, 50 parts of toluene diisocyanate, 5 parts of water, 0.5 part of triethylenediamine, 0.5 part of stannous octoate, 1.5 parts of silicone oil, fiber reinforced combination 27 parts, wherein, by weight, the fiber reinforced composition comprises 5 parts of carbon fiber, 8 parts of spandex fiber, 17 parts of bamboo fiber, 3.4 parts of coupling agent, and 3.4 parts of antioxidant; the coupling agent is selected from silane coupling agent, Antioxidant uses ultraviolet absorber UV-531, the specifications of the three fibers are all 150D, and the length is 6mm;

[0041] Preparation steps include:

[0042] S1, in parts by weight, mixing the raw material components of the fiber-reinforced composition for 30 minutes at 600 r / min to obtain a fiber-reinforced composition;

[0043] S2, in parts by weight, the fiber-reinforced ...

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Abstract

The invention discloses a flexible polyurethane foam plastic and belongs to the technical field of polyurethane products. According to the key points of technical scheme, raw materials for preparationof the flexible polyurethane foam plastic comprise the following ingredients: 100 parts of polyether polyol, 30-50 parts of toluene diisocyanate, 1-5 parts of water, 0.1-0.5 part of triethylene diamine, 0.1-0.5 part of stannous octoate, 0.3-1.5 parts of silicone oil, and 23-27 parts of a fiber-reinforced composition. The fiber-reinforced composition comprises (by weight): 2-5 parts of carbon fiber, 5-8 parts of spandex fiber, 14-17 parts of bamboo fiber, and 2-3.4 parts of a coupling agent. The production method comprises: S1, mixing the raw materials of the fiber-reinforced composition at 500 to 600 r / min for 20 to 30 minutes to obtain a fiber-reinforced composition; and S2, mixing the fiber-reinforced composition and the remaining component and foaming and reacting to prepare the flexible polyurethane foam plastic. The temperature before mixing is 25-30 DEG C.

Description

technical field [0001] The invention relates to the technical field of polyurethane products, in particular to a soft polyurethane foam and a processing method thereof. Background technique [0002] Flexible polyurethane foam is referred to as polyurethane soft foam or PU soft foam. It is a type of polyurethane foam with certain elasticity and softness. It is also the largest type of polyurethane product. It has a porous honeycomb structure inside and has good flexibility Elasticity, water absorption, water resistance, etc., widely used in sofa cushions, sofa backrests, sofa armrests, vehicle seats, mattresses and other industries. [0003] Existing reference can be made to the Chinese patent application whose publication number is CN104130371B, which discloses a low-odor and high-resilience passenger car seat sponge, which is composed of composite material and modified diphenylmethane diisocyanate in a mass ratio of 100: The ratio of 55-60 is made, and the combined materia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/08C08L75/04C08L97/02C08K9/06C08K7/06C08G18/48C08G101/00
Inventor 郭呈宇
Owner 天津市大邱庄泡沫塑料有限公司
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