What is the best fire resistant filler/additive for the NBR/PVC based foams for low smoke and low fire spread index?

I am working on the making NBR/PVC based foams for thermal insulation application. where the low smoke and less fire spread index properties are required. please suggest us which are the...

01 February 2018 8,162 1 View

How to get fine cell structure in cross linked polyethylene foams?

I am working on cross linked polyethylene cross linked foams. I am working on a object to get the very fine cell structure and i tries with different fillers and didn't get any improvement....

11 December 2017 9,714 3 View

Additives for decreasing the thermal conductivity of polyetylene foams?

I am looking for additives/filler to decrease thermal conductivity of cross linked closed cell polyethylene foams? please advise me what kind of fillers I can use for my research purpose.

11 December 2017 8,829 3 View

Is there any additives or fillers to avoid scracthes on polyester gelcoats?

After applying polyester gel coats on glass reinforced composites. we are facing lot of scratching problems and it is increasing the finishing stage of product. If any filler or additives can...

02 March 2016 1,374 3 View

After curing unsaturated polyester resin for making FRP composite, will the NH2 still decompose or is it still present in the product?

I am using unsaturated polyester resin for making FRP composite. For curing of this resin am using BPO as a catalyst and Dimethyal aniline (DMA)as a accelarator using for curing of resin. After...

01 February 2016 2,075 3 View

Which material is best for level 4 body armor?

Hello, What are the manufacturing techniques for body armor product. and silicon carbide ceramic tiles with 10mm are good enough are not for type 4 body armor. If it's good which materials is good...

02 March 2015 3,601 17 View

Are there any nanomaterials or nanoparticles for fire retardant properties?

What are the nanomaterials or nanoparticles for fire retardant properties with low cost for thermoset resins like polyester and vinyl ester?

01 February 2015 3,778 12 View

How to find an aspect ratio of clay nanoparticles?

After dispersion of clay nanoparticle into the polymer resin, how to find the aspect ratio of nanoparticles?

08 September 2013 8,346 2 View

How to solve the system of coupled partial differential equations containing integral terms?

In estimating the growth of nanobubble in viscoelastic polymer melt, I have ended with five partial differential equations to solve for final radius.

08 September 2013 4,814 3 View

When clay nanoparticles disperse into epoxy resin, why does flexural strength decrease??

Flexural modulus increases but only the strength decreases compared to neat epoxy resin.

11 December 2012 2,815 14 View

error in running a model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

error in modelling model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

MGL tools

20 June 2021 0 0 View

what is the simplest definition of ion exchange capacity

What this unit identifies for the ion exchange capacity ca. 0.92 meq. g-1. I am a newcomer in the membrane area. I just started. I highly appreciate your help

08 May 2021 0 0 View

what is the simplest definition of ion exchange capacity

What this unit identifies for the ion exchange capacity ca. 0.92 meq. g-1. I am a newcomer in the membrane area. I just started. I highly appreciate your help

08 May 2021 0 0 View

flexibility of polymers chain

effect of double bond on the flexibility of polymers

07 April 2021 0 0 View

i have some problem with chtMultiRegionSimpleFoam

--> FOAM FATAL ERROR: Maximum number of iterations exceeded From function Foam::scalar Foam::species::thermo::T(Foam::scalar, Foam::scalar, Foam::scalar, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar) const) const [with Thermo = Foam::hConstThermo >; Type = Foam::sensibleEnthalpy; Foam::scalar = double; Foam::species::thermo = Foam::species::thermo >, Foam::sensibleEnthalpy>] in file /home/ubuntu/OpenFOAM/OpenFOAM-4.1/src/thermophysicalModels/specie/lnInclude/thermoI.H at line 66. FOAM aborting #0 Foam::error::printStack(Foam::Ostream&) at ??:? #1 Foam::error::abort() at ??:? #2 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::calculate() at ??:? #3 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::correct() at ??:? #4 ? at ??:? #5 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6" #6 ? at ??:?

24 March 2021 0 0 View

Formulation of polymer color flakes

I am writing to request some information for making polymer color flakes. I would appreciate the help.

17 March 2021 0 0 View

Can we classify HV and LV lines based on line length?

I have dataset which shows the length of power lines. I need to classify the lines based on the line length. Is there a rule to classify the High voltage (HV) and low voltage (LV) lines based on...

03 March 2021 4,116 4 View

Polymer composites suddenly solidifies?

I am making polymer composite by solvent mixing method. When I am trying to add filler solution in polymer solution it quickly get solidified. How to make them then uinform? It doesn't give time...

03 March 2021 7,540 4 View