Internal mould release for resin with low profile additive

Polyimide

powder

fluropolymer klirsui

(:heniicals

Aurum

duccd

polyimidr

has inrro-

powders

as d pea--

live

s;iy

[o I’l’Ft<

imide ridlly

,ind

rtl,ir

powdery lower

higher

IresisTdnce

,~nd cl-q

undct-

surrivetociry

pared

ins-grade

csTrenie con-

dry

dnd

operating

high

inner

including

extruded

d

push-putt

blends

.1dopred

hy

he

‘111~01110-

.Ippli-

The

ante

,~nd selilicoIic111cTol-

ni,ln11-

f3cturing

indusrr-ies

in sonic

rhc most

dcmdnding

applk-

S,W 1.~

tor of Business Engineered iblitsui

powders

busr,

.md

longer

cffectivc

I.lsIing

composirion

ail

tlame

r,iting

Laboratories

has developed

new internal

mould

a

release

‘ll~hle

be

cost

mechanical

md

resisrant

and

adds rhar inherenrly

an

polymer

V-O

with

flammability

an electrical

index

(KIT)

1 shows

some

properties

of Aurum

I9400/450

polyimidc

relative ot’240”(1. other

properries.

1;)1-

f

or resin

additive

file additive there is a tendency

Axe1 Plastics Research

388°C (730°C)

for the additive to phase out. He adds: “The separation

can

release was added, and they believe that this will improve their line speeds.”

agent for pultrusion. MoldWiz INT-PUL3 15LPA is designed

be quite dramatic, which causes the low profile additive to form

The new internal mould release agent is a mix of organ-

specifically for polyester or vinyl ester resin systems that

a rubbery ball or mass that is impossible to reincorporate by mixing. This does not occur

ic phosphate esters, amines and hydrocarbon carriers. The usual addition level is

contain polyvinyl acetate as a low profile additive. According to Glenn Ester, the company’s senior technical support representative, when most internal lubricants

are added to

the resin along with a low pro-

Plastics

Additives

& Compounding

when INT-PUL3 15LPA is used, in fact, during the first trials conducted, our customer actually reported a reduction in the viscosity of the resin/low profile additive mix when the

june

2001

5.5 x Io-s/“c

expansion

PI>450 is

rherm.il

is .t I-O-

mould release

with low profile

250°C (482°F)

temperature

Aurum

polyimidc

processable

an UL, 04

,lr

polyimide

and

2,760 MPA (400,000 psi)

Aurum

“Exccllenr

the result

Youngs modulus

cotllp”Il”lts.”

direc-

in I’TFE

85

Mirsui (1hemicats

(;roup

of Aurum

2,940 MPa (427,000 psi)

Hardness, Shore D

rribological

of

I)e~~elopnienr.

(Iheniic;ll5.

.ichicved

Hyde,

Marerials

dispersion fine

)

Flexural modulus

Linear thermal

rlecrl-ic‘ilielccrl-onic,

rions.”

92 MPa (I 3,300 psi)

Melt point

h,ivc

Iivc,

as 0.0

I20 MPa (I 7,300 psi)

strength

Tensile strength

Glass transition

line!-s.

“I’I~~~~iAuruni hccn

Compressive

fully

seats, v,ilvcs.

hcarin+

belts

I’V

environ-

pertbrnidncc

I .33

Specific gravity

3r high

bear-

pdrricle

Internal

company,

in .Ipptic,irions

vdlvc-scars,

,ind

prt’s-

convenrionnt

‘1s low

ments

&lr

h,is 3 mcdn

size t-,ingc

Table I : Properties of Aurum PD400/450 polyimide

polyimide

are effective

Iuhricared

high ,ind

ro rhr

in both

tubing,

composirions.

.Iciditive

levels

to abr,lsion

condirions

\virh

The

suhsran-

f,lcIni-s

(I’V)

teniperarul-e

1)trnds

ply-

impirt

we,ir

engi-

&ii-

3s an

Aui-urn

According

I’TFlYAurum

,iddirivc

thermoplasrics.

coIlip~i~i~

performance

I’L~400/1’1~4 50

t;~rm,mcr enh,incing t;,r fluoropolymers neering

boosts

I % based on weight. Contact: Axe1 Plastics Research Laboratories Tel: +I 718 672 8300 Email: info@@axelplast.com

powder well

and

and

pclleriseti

as in exnuded

shapes,

film

is My

and

melt-

i\ ,iv,lil,ihlc h)r-111.

srocli ruhiq

in ,I\