OZONE FRIENDLY REPLACEMENTS FOR CFC-113 AND METHYLCHLOROFORM

Abid N. Merchant DuPont

Wilmington, DE 19805 T-302199914269 F-302=999-5340

Topics Background HFC-43-10 (Vertrel@-XF)

- Properties

= Applications HFC-43-1 O/ 1,2 trans-DCE (Vertrelo-MCA)

= Properties

- Applications

= Properties

= A p pl ica t i ons

Path Forward

0 HFC=43-10/1,2 trans-DCE/ Methanol (Vertrei@-SMT)

HFC-43-10 mee Nomenclature

VertrelB XF

1,l ,I ,2,3,4,4,5,5,5 Decafluoropentane

F F F F F

I I I I I I I 1 1 . 1

F-C-C-C-C-C-F

F H H F F

HFC-43-10

H C1

€3-C-C-Cl

H C1

I I I I

Methyl chloroform

Regulatory Update

e

e

e

e

PMN For HFC-43-10 Approved By EPA On May 31,7995

i

Commercial Production Of HFC-43-10 Has Started

VOC Exemption Has Been Filed With EPA

Foreign TSCA Listing Underway

Key Properties Of 43-10 mee

Boiling Point Flammability Heat Transfer Properties Thermal Stability Material Compatibility Azeotropes ODP GWP ALC AEL voc

Excellent No Dec. o 3OOOC

Excellent Yes zero

10,000 PPM 200 PPM Exemption Filed

Successful Applications Of HFC-43-10 mee

Carrier Fluid . ..

Rinsing Agent In Co-Solvent Process

- Defluxing

- Degreasing

- Precision Cleaning

Particle Removal

Displacement Drying

Film Cleaning

0

0

0

0

0

0

0

0

Why HFC-43-10 Is Superior.To PFC In Co-solvent Process

Removal of Soil and Solvating Agent by Dissolution Rather Than Displacement

Elevation of Boil Sump Temperature Enhances Cleaning

Improved Rinsing Due to Reduce Solvationg Agent in Vapor

Reduce Losses of Rinsing Agent (1 5-30%) More Energy Efficient Process (No Special Mixing Requirement For Boil Sump & Low Turn-over)

Could Reduce Equipment Costs

Greater Soil Loading Capacity

Wider Soil Cleaning Latitude

Agent I 9 in HFC-43-IO & PFC-5060

Weight Percent Agent 19

, DuPont, AN

0 <o 0 v) I

0 ill e 0

d c 0

‘f n

0 (D

0 LD

0 v)

v) In

Particulate Removal Tests Number of Tests:

Equipment:

Two Locations

Modified BBI Vapor Degreaser Flow System

Fluid: Neat 43-10 mee And Co-Solvent

Tests:

Results:

Internal Guidence Components Vacion Pump Neat 43-10 Worked Well

HFC-43-10 With Petroferm 18,19, & 24 Co-Solvent Tests Worked Better Than PFC

Displacement Drying Parts = Metal Lids, Glass Beads, Ceramic Chips Solvent = 43-10 with 0.4% HSC4000 Surfactant

YO Water Removed Parts Agitation FREON TDFC _ _ _ - ~ 4340

Metal Lid No I00 95 Yes I00 100

Glass Bead No I00 I00

Ceramic Chips No 99 Yes 100

80 >99

VertrelB Products .

Vertrela XF Neat HFC=43=lO . > , - " 3

VertrelB XM 43-1 01 Methanol

VertrelQ XE 43-1 01 Ethanol

VertrelQ MCA 43-101 1,2 DCE

VertrelB SMT 43-101 1,2 DCE/ Methanol

I 2 Trans-Dichloroethylene Formula:

Boiling Point

Flashpoint

ODP

GWP

AEL

Cleaning Properties

c1 H \ /

\ c1 /c=c H

48°C (118°F)

Yes

Zero

Near Zero ,,

200 PPM (ACGIH)

Excellent

Key Properties of VertrelQ MCA Azeotrope Composition

1,2 trans-DCE Stabilizer

HFC-43-10

Boiling Point Flammability Thermal Stability Heat Transfer Properties Material Compatibility ODP GWP AEL Cleaning Prperties (Surface Tension/ Viscosity) Oxygen Compatibility

WT% 61.7 37.8 0.5 39 C (102 F) None Exceilen t Excellent Good Zero Low (0.155) 200 PPM Excel ien t

Yes

OXYGEN IMPACT TEST RESULTS FOR HF'C=43=1O/DCE SOLUTIONS

PROCEDURE - NHB 8060.1, TEST 13 EQUIPMENT - LOX AT AN IMPACT ENERGY OF 10 KG-M

MATERIAL

WT%

HFC-43- 1 ODCE (9011 0)

I

HFC-43 - 1 O/DCE (80120)

HFC-43-1 O.DCE (6213 8)

OXYGEN SAMPLE IMPACT CONDITION THICKNESS ENERGY RESULTS

PRESSURE TEMP (PSI) ("F) (KG-M)

0/20 14.7 LOX 0.50 0

14.7 . LOX

14.7 LOX

.05

.05

10 0/20

10 0/20

cn

I- L

> IC. 0 cn a

m- I-

8 Q 0

a

CI c Q)

Q) 0 K W

- - CI c a, Q) 0 x W

- -

v) Q)

=E d)

a-

U 0

8

Q .- n a- - m p.

0

N ti

n n 0

e 0 0 cv

"l W

Ic.r c a Q) 0 x W

- -

Material Compatibility for VertrelB MCA and Vertrel SMT

Metals (2 weeks @ 120 C in sealed tube)

Aluminum Compatible Steel Compatible Copper Compatible

Plastics ( I week@ 55 C in sealed tube) All Compatible Polyethylene HD Polyethylene

Nylon Phenolic Polyester, PET & PBT Teflon TFE, FEP, PFA Acetal Polyamides

Polypropylene EPOXY

Material Compatibility for VertrelB MCA and Vertrel SMT (Continued) -.

Elastomers (1 week @ 55 C in a sealed tube) All Compatible

Polysulfide EPDM (Norde Chlorosulfonated PE Butyl Rubber Buna S * Natural Rubber *

* (Swelling But With Low Extractables)

P

0

e

e

0

0

Successful Applications for VertrelB MCA (43-10 mee/ 1,2 trans DCE)

Precision Cleaning

Oxygen System Cleaning

Carrier FI u id

General Metal Cleaning

Optical System Cleaning

Successful Applications for VertrelB SMT (43-101 1,2 trans DCEI Methanol)

Def I uxing

Precision Cleaning - Prior to Conformal Coating

- Machined Parts

= Hard To Clean Soils Hand Soldered Cleaning

Optical System Cleaning

PC Board Cleaning Azeotrope - 43-1 0/1,2 trans DCE/MeOH Board = 3D Boards/l585 'RMA Flux

12

10 I

8

Contamination 6 pg/ln* Ionic

4

2

0

43-1 0/1,2 t rans/MeOH m 0 F-113/MeOH

3000

2000 pg/Board

Residual Rosin

1000

0

6

5

4

E V

5 3 0 II :1

2

1

0

Defluxing Test 'I'cst Ilarri-cts - Wavc soltlcrcrl with I.Iollis 225 Oil F h I X - IIMA 185 Kester 'I'csl Ilqiiipiiiciit - f l f ~ l Motlifictl M;icliilic

- 2 iiiiii. h i 1 / I i i i i i i . Rinsc / I iiiiii V;qioI

.C' ,,/

..' ,/'

...'

Vertrcl SMT A 24/ Vertrcl XF 225/ Ellintlol

White Residue - Vetrel SMT < A. 241 Vert. XF < AK 2251 Ethanol

DuPonl, Ab

Precision Cleaning Solvent A VertrelB MCA

B VertrelB SMT Parts - Nuts, Bolts Cycle - CleanlRinse (1 minute each)

Oils

Oak

Sultek

Cutzoil

Texaco

Sunn icut

YO Oil Removed A B

100 100

100 100

100 100

100

>90

1.00

100

m

c)

0 cn

0

(v A

1 \r

0 1

eh d. c1

I- s cf)

> II

cn c Q)

.cI

E E 0 0

- - 8 c .E 5 a-

K (\3

0 3

Vertrel SMT Tests For Precision Cleaning And Defluxing

= Aerospace Company = Equipment: BBI-MLR-120

Tests Cleaning of Thin Metal Foils Prior To Welding

- Folis Cleaned And Welded - Leak Tested With Helium Checker - Leak Tests - Acceptable

Cleaning Prior to Conformal Coating - Parts Vapor/Rinse Cleaned - Parylene-C Coating 30,000 A" - Adhesion Tests - Acceptable

Vertrel SMT Tests For Precision Cleaning And Defluxing (Continued)

Tests Cleaning For Glass To Metal Sealing

= Metal RingdSteel Tube/Glass Cane Vapor/Rinse Cleaned = High Temperature Melting In A Furnace - “Pull Tests” - Acceptable

Hand Soldered Parts In Vapor Only - Hand Soldered Insulating Terminals Vapor/ Rinse Cleaned - Insulation Resistance Tests - Acceptable

Cleaning Of Printed Circuit Boards - IPC-36 Boards/ Wave Soldered = Excellent lonics and SIR Results = Ionic <l Yglsq. in.; SIR 3.2 x 109 ohms

Existing Vapor Degreaser

Retrofit for Better Containment

New Triple Guard Machine

Emission And Solvent Loss Measurement

BBl-MSR-I20 Both Machines Modified by Ultronix For 2:i BBI-MSR-250-R Freeboard Ratio And A -2OOC Secondary Coil

HFC-43-10 Emission Measured By Miran-B IR Analyzer

Degreaser Condition Emission In PPM Idle 2 -5PPM Cleaning 2 = I O PPM Spray Cleaning I O = 30 PPM

Solvent Loss in BBl-MSR-120 For HFC-43-10

2 Week Test = 1 Gallon/ 15 Days - e 1 Lb/Day

'CJ i

z 0 L s I-

L ' 0 c 9 l- T-

cj LL c) L -

L Y L

0 a Q 0 -

L

5

v)

Q) m co E

L

3

L 0 LL 0

- pi

32 1 c

)r

v) n

P S CII CJ) *= = - is

w v) a 8 3 CI v)

CI v) a W

uj

Path Forward (Continued)

+ For Literature (Bulletins, MSDS) Or Any General Information Contact DuPont’s 800 Number For Customer Service:

1=800=441=9281

w r:

Q) CL, 0

E 2 0 U

e 0 co 0 cI1 I

ICI

L s tu

5 (0 ...I c

m I

Q) a a 0 L. U

0 z n cn 0 o c11 7

z 0 Lu U L 0 s a