Preparation and Performance Evaluation of PU Foam Composite Board

2013 ◽  
Vol 457-458 ◽  
pp. 40-43
Author(s):  
Jia Horng Lin ◽  
Yu Chun Chuang ◽  
Ching Wen Lou ◽  
Ting Ting Li ◽  
Chen Hung Huang
Keyword(s):  
Living Environment ◽  
Resistance Force ◽  
Curing Process ◽  
Puncture Resistance ◽  
Composite Board ◽  
Pu Foam ◽  
Resistance Property ◽  
Foam Composite ◽  
And Performance ◽  
Addition Amount

As improvement of industry and society, some potential crisis happened in working and living environment is taken into account by human people. Meanwhile, different kinds of protective appliances develop rapidly, and composite boards with cushion and puncture-resistance property are required consequently. This study aims to develop a cushion/puncture-resistance PU foam protective composites. This paper used Polyol and Isocyanate to prepare porous PU foam composite via foaming and curing process. By changing foam density and addition amount, cushion and puncture-resistance property were tested and then evaluated to seek for PU foam composite with cushion and puncture-resistance property. Result shows that, when density was 80 kg/m3, PU foaming composite board had the optimum resilience rate of 44 %, lowest impact remaining load of 638 N and best puncture-resistance force of 138.3 N.

Effects of Foam Density and Content on Puncture Resistance and Cushioning Properties of PU/ Vermiculite Foam Composites

2014 ◽  
Vol 910 ◽  
pp. 270-273 ◽  
Author(s):  
Jia Horng Lin ◽  
Ting Ting Li ◽  
Yu Chun Chuang ◽  
Chen Hung Huang ◽  
Ching Wen Lou
Keyword(s):  
Impact Load ◽  
Polar Group ◽  
Foam Density ◽  
Puncture Resistance ◽  
Resistance Property ◽  
Foam Composite

This study presents effects of foam density and vermiculite content of puncture resistance and cushion properties of PU/vermiculite foam composite for resisting against sharp objects and impact load. Results show that puncture resistance property improves significantly with foam density and slightly with increase of vermiculites. Cushion property becomes worse lower after vermiculite addition. With improvement of foam density, cushion property shows an uncertain trend. Besides, comparing with different contents of vermiculites, PU/vermiculite foam composite containing 5 wt% vermiculite has the lowest cushion property because vermiculite bonds with polar group among polar group among PU molecular.

Organic/Inorganic Acoustic-Absorbing/Thermal Insulating Fiber-Reinforced PU Composite Foam Boards

2015 ◽  
Vol 749 ◽  
pp. 270-273 ◽  
Author(s):  
Jia Horng Lin ◽  
Yu Chun Chuang ◽  
Chen Hung Huang ◽  
Ting Ting Li ◽  
Ching Wen Lou
Keyword(s):  
Carbon Fibers ◽  
Acoustic Absorption ◽  
Curing Process ◽  
Fiber Reinforced ◽  
Composite Foam ◽  
Burst Strength ◽  
Thermal Insulating ◽  
Pu Foam ◽  
Foam Composite ◽  
Reinforcing Fiber

As technology expands rapidly, scientific productions have become an indispensable part for human daily life. Hence, human begin to value environment comfort and functional property. This study purposes to add reinforcing materials, carbon fiber and glass fiber, into polyurethane (PU) foam solvent, and to form PU foam composite board after foaming and curing process. The foaming density and reinforcing fiber were altered during process. The burst strength, acoustic absorption and thermal conductivity of resulting organic/inorganic fiber-reinforced PU composite foam boards were evaluated. Result displays that, 5 wt% additions of carbon fibers improved burst strength and thermal insulation, and maintained the original acoustic absorbing characteristic.

scholarly journals Sound Absorption Coefficient and Water Content Responses in Acoustic Analysis Based on Renewable Polyurethane Foam Composites

2019 ◽  
Vol 8 (9S3) ◽  
pp. 1576-1581
Keyword(s):  
Moisture Content ◽  
Sound Absorption ◽  
Acoustic Analysis ◽  
Negative Effects ◽  
Experimental Conditions ◽  
Acoustical Properties ◽  
Pu Foam ◽  
Foam Composite ◽  
And Performance ◽  
Main Effects

In physiological health, negative effects are felt when unwanted noise is present. Given the negative effects of the unwanted noise, it become important to examine how environmentally-friendly and efficient sound absorbing materials could be developed. Some of the materials associated with acoustic absorption properties entail polymer foams. Particularly, the foams aid in controlling noise. The central purpose of this study was to examine renewable polymer (PU) foam composites’ aspects of moisture content and acoustical properties. Four major parameters that were evaluated included the thickness of the sample, the type of filler, the ratio of the fillers, and the nature of the monomer. A design of experiment (DoE) technique was employed. To prepare the PUs foams, 28 mm and 100 mm were selected as diameters for the cylindrical shapes on focus. Plotting the main effects was achieved through ANOVA, upon which variations in the role and performance of the selected input factors were discerned. From the findings, it was established that when bio-epoxy (B) was used in conjunction with renewable PU foams, the moisture content was greater than the case involving petroleum based PU foam synthesis. Hence, renewable PU foam composite is seen to be realized at 0.9, especially if the filler ratios and size are increased; with the experimental conditions set at 3 kHz. Overall, the study established that the renewable Pus’ state of sound absorption exhibits good agreement with the case of synthetic PU foam.

scholarly journals Novel Composite Planks Made of Shape Memory Polyurethane Foaming Material with Two-Step Foaming Process

Polymers ◽  
2022 ◽  
Vol 14 (2) ◽  
pp. 275
Author(s):  
Jan-Yi Lin ◽  
Mei-Chen Lin ◽  
Bing-Chiuan Shiu ◽  
Ching-Wen Lou ◽  
Jia-Horng Lin ◽  
...  
Keyword(s):  
Electromagnetic Wave ◽  
Carbon Fiber ◽  
Shape Memory ◽  
Woven Fabric ◽  
Shielding Effectiveness ◽  
Puncture Resistance ◽  
Foaming Process ◽  
Pu Foam ◽  
Foam Composite ◽  
Shape Memory Polyurethane

In this study, shape memory polyurethane (SMP) foaming material is used as the main material that is incorporated with carbon fiber woven fabrics via two-step foaming method, forming sandwich-structured composite planks. The process is simple and efficient and facilitates any composition as required. The emphasis of this study is protection performances, involving puncture resistance, buffer absorption, and electromagnetic wave shielding effectiveness. The proposed soft PU foam composite planks consist of the top and bottom PU foam layers and an interlayer of carbon fiber woven fabric. Meanwhile, PU foam is incorporated with carbon staple fibers and an aluminized PET film for reinforcement requirements and electromagnetic wave shielding effectiveness, respectively. Based on the test results, the two-step foaming process can provide the PU foam composite planks with excellent buffer absorption, puncture resistance, and electromagnetic wave shielding effectiveness; therefore, the proposed composite planks contribute a novel structure composition to SMP, enabling it to be used as a protective composite. In addition, the composites contain conductive material and thus exhibit a greater diversity of functions.

Investigations on Dynamic Puncture Behaviors of Integrated Composite Reinforced with Varying Fabrics

2013 ◽  
Vol 365-366 ◽  
pp. 1070-1073 ◽  
Author(s):  
Chia Chang Lin ◽  
Ting Ting Li ◽  
Ching Wen Lou ◽  
Jan Yi Lin ◽  
Jia Horng Lin
Keyword(s):  
Performance Improvement ◽  
Cost Reduction ◽  
Body Armor ◽  
Packaging Materials ◽  
Puncture Resistance ◽  
Fabric Reinforcement ◽  
Number Of Layers ◽  
Layer Composite ◽  
Puncture Force ◽  
And Performance

The dynamic puncture resistance of multi-layer integrated composite which was comprised of glass fabric reinforcement or Kevlar fabric reinforcement and nonwovens were discussed as related to recycled Kevlar fibers amount, number of layer and K-ply position for purpose of cost reduction and performance improvement. The result shows that, 20 wt% Kevlar fibers contained in nonwovens have the optimum puncture resistance. And the dynamic puncture force increases linearly with number of layers, and also improves proportionally as increasing number of K-ply. The resultant multi-layer composite is expected to be used as body armor interlayer and packaging materials.

scholarly journals Preparation and Performance of Wheat-straw Composite Board with Inorganic Adhesive

BioResources ◽  
2015 ◽  
Vol 11 (1) ◽  
Author(s):  
Jianzheng Qiao ◽  
Aijun Wang ◽  
Xingong Li
Keyword(s):  
Wheat Straw ◽  
Composite Board ◽  
And Performance ◽  
Straw Composite

scholarly journals SARS-CoV-2 Removal with a Polyurethane Foam Composite

2021 ◽  
Author(s):  
Guilherme Pereira Schoeler ◽  
Thays França Afonso ◽  
Carolina Faccio Demarco ◽  
Victor dos Santos Barboza ◽  
Tito Roberto Sant'anna Cadaval ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Social Inequalities ◽  
Low Cost ◽  
Paper Industry ◽  
Expansion Method ◽  
New Materials ◽  
Free Expansion ◽  
Pu Foam ◽  
Foam Composite ◽  
Basic Sanitation

Abstract The pandemic of COVID-19 (SARS-CoV-2 disease) has been causing unprecedented health and economic impacts, alerting the world to the importance of basic sanitation and existing social inequalities. The risk of the spread and appearance of new diseases highlights the need for the removal of these pathogens through efficient techniques and materials. This study aimed to develop a polyurethane (PU) biofoam filled with dregs waste (leftover from the pulp and paper industry) for removal SARS-CoV-2 from the water. The biofoam was prepared by the free expansion method with the incorporation of 5wt% of dregs as a filler. For the removal assays, the all materials and its isolated phases were incubated for 24h with an inactivated SARS-CoV-2 viral suspension. Then, the RNA was extracted and the viral load was quantified using the quantitative reverse transcription (RT-qPCR) technique. The biofoam (polyurethane/dregs) reached a great removal percentage of 91.55%, whereas the isolated dregs waste was 99.03%, commercial activated carbon was 99.64%, commercial activated carbon/polyurethane was 99.30%, and neat PU foam reached was 99.96% for this same property and without statistical difference. Those new materials endowed with low cost and high removal efficiency of SARS-CoV-2 as alternatives to conventional adsorbents.

Resilience Property of Spacer Fabric Compounded PU Foam Composites

2014 ◽  
Vol 910 ◽  
pp. 218-221
Author(s):  
Jia Horng Lin ◽  
Ting Ting Li ◽  
Yu Chun Chuang ◽  
Chen Hung Huang ◽  
Ching Wen Lou
Keyword(s):  
Experimental Result ◽  
Foam Density ◽  
Saving Energy ◽  
Pu Foam ◽  
Spacer Fabric ◽  
Foam Composite ◽  
Opening Ratio

For purpose of saving energy and avoiding injuries, foam composite with excellent resilience property was successfully prepared consisting of inflame-retarding nonwoven, spacer fabric and PU/additive foam. Effects of foam density, additives (vermiculite, perlite) content and opening ratio of spacer fabric on resilience rate were explored respectively. Experimental result shows that 50 kg/m3foam density of PU foam had the lower resilience rate when containing 10 wt%-20 wt% vermiculites. Perlite P2 addition produced optimal resilience property comparing other types of additives in PU foam. Resilience rate decreased with increase of opening ratio of spacer fabric when containing 5 wt% additions.

A Puncturing Device that Mimics the Mechanism of Mosquito’s Proboscis and Labium - Verification of the Effect of Skin Deformation / Needle Buckling Prevention Mechanism and Puncture Experiment on Artificial Skin and Experimental Animals –

2020 ◽  
Vol 14 (1) ◽  
pp. 117-127
Author(s):  
Shunki Yamamoto ◽  
Seiji Aoyagi ◽  
Masahiro Yamada ◽  
Tomokazu Takahashi ◽  
Masato Suzuki ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Blood Flow ◽  
Fem Analysis ◽  
Artificial Skin ◽  
Resistance Force ◽  
Puncture Resistance ◽  
Experimental Animals ◽  
Skin Deformation ◽  
Laser Lithography

This paper proposes a mechanism for preventing needle buckling and skin deformation by mimicking the mosquito’s labium and discusses a puncturing device with a jig-integrated microneedle, based on the proposed mechanism. A sheet simplifying this mechanism was attached to an artificial skin’s surface, and experiments to puncture this artificial skin and corresponding finite element method (FEM) analysis were conducted. It was confirmed that the deformation of the puncture target and the puncture resistance force decreased with the use of the sheet. Based on these experimental and FEM-analytical results, a puncturing device with a jig-integrated needle has been designed and fabricated with 3D laser lithography. Experiments have been conducted with the fabricated device to puncture an artificial skin and the skin of a nude mouse to determine needle buckling prevention and the reduction in skin deformation. The study successfully samples blood from the mouse without stagnation of blood flow.

Selection of Oil Displacement Agent and Performance Evaluation for Foam Complex System

2013 ◽  
Vol 437 ◽  
pp. 1097-1100 ◽  
Author(s):  
Wen Xiang Wu ◽  
Jia Bin Tang ◽  
Zhu Xin Zhang
Keyword(s):  
Interfacial Tension ◽  
Surface Active Agent ◽  
Composite Index ◽  
Active Agent ◽  
Alkali Concentration ◽  
Chemical Flooding ◽  
Test Study ◽  
Foam Composite ◽  
And Performance ◽  
Ultralow Interfacial Tension

DIGEST: With the Interfacial tension test, researched the active agent interface behavior of HXJ-1 and HXJ-2.Test study indicates that the alkali concentration less than 0.6% and 1.2% respectively, the active agent HXJ-and HXJ-2 can form ultralow interfacial tension, besides the area of ultralow interfacial tension formed by HXJ-1 is larger than HXJ-2. As can be seen from the chorogram chart of foam composite index, without alkali and polymer, the two kinds of surface active agent generate the foam composite index similarly in the different density of active agent. The exist of alkali is not effect positively for the formation of super foam in the system, and adding appropriate (<200mg/L) polymer can increase the system foam effectively. When add the alkali or polymer, the area of super foam formed by HXJ-1 will larger than HXJ-2.By the percentage of foam quality, the HXJ-1 required less amount of active agent and concentration to transfer the whole system into the foam than HXJ-2, may draw a conclusion that the HXJ-1 is more easily foam than HXJ-2. The chemical flooding recovery efficiency of HXJ-1 improved three percentage point compared with HXJ-2.

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