Composites USA - Dual Laminate Thermoplastic Lined Equipment

Dual Laminate -
Thermoplastic Lined
Steel Equipment

Design Considerations
Detail Sheets
Specifications
Thermoplastic Lined Steel Equipment
Quality Assurance and Testing

For elevated temperatures and pressures, Thermoplastic Lined Steel (TLS) may offer the best solution to process corrosion problems. Ultra pure applications that are found in the pharmaceutical and semiconductor industries often require mechanical designs better suited to alloys than composites. TLS offers a cost effective alternative to high nickel alloys for these applications in the same way Dual Laminate composite fabrication addresses corrosion and purity issues at lower temperature and pressures.

TLS is offered in three distinct forms: a non-bonded or loose liner, a mechanically attached liner, and an adhesive bonded liner. The service conditions dictate which form is best suited to the application, and Composites USA can assist in this determination.

Composites USA can provide a complete lined steel equipment package, or we can line customer supplied steel equipment. If customer provided, Composites USA personnel can assist with the specifications and fabrication inspections required for the steel equipment to insure a design that is best suited for thermoplastic lining.

Reinforced Thermoset Plastic Lined Steel Equipment

Thermoset Plastic Lined Steel Equipment is often a cost effective alternative to TLS where corrosion and purity requirements do not dictate the use of a thermoplastic, but where carbon steel is unsuitable for the application.

Continued advances in materials of construction are expanding uses for reinforced thermoset plastic (RTP) lined equipment. Delamination, which can occur due to the vast differential between RTP and steel coefficients of thermal expansion, has been greatly reduced by advances in elastomeric resins. Resin reinforcement has also changed with the advent of a fluoropolymer-surfacing veil (Halar Veil). This veil allows for a higher concentration of reinforcement to resin ratio, without sacrificing chemical resistance, which makes the corrosion barrier less susceptible to crazing and cracking.

Typical Liner Material Properties

Mechanical Properties ASTM Unit PVC CPVC PP PVDF PVDF AS ECTFE ETFE FEP PFA RTRP
Typical

Specific Gravity¹ D792 See Note 2 1.32 1.55 .91 1.76 1.78 1.69 1.70 2.15 2.15 1.12

Tensile Strength¹ D638 psi (SI) 6300 (45) 8000 (55) 5000 (33) 7111 (50) 4900 (32) 6400 (45) 6250 (44) 3400 (25) 3840 (27) 18000

Tensile
Modulus¹ D638 psi
(SI) 360000 (2500) 360000 (2500) 170700 (1200) 341400
(2400) 250000 (1750) 241800 (1700) 156500
(1100) 60500
(425) 39800
(280) 1550000

Flexural
Modulus¹ D790 psi
(SI) 415000
(2860) 415000
(2860) 200000
(1406) 320000
(2250) 241800
(1700) 241800
(1700) 184900
(1300) 98900
(660) 98900
(660) 1150000

Flexural
Strength¹ D790 psi
(SI) 15100
(104) 15100
(104) 6685
(47) 10525
(74) 6381
(44) 6258
(44) 5500
(39) 2560
(18) 2560
(18) 23000

Hardness D2240 Shore D 80 80 73 77 77 75 67 56 60

Elongationat break¹ % 20-30 20-30 20-300 20-80 15 200 200 299 300

Thermal
Properties

Maximum
Service Temp. ** 140
/
60 190
/
90 200
/
94 300
/
149 250
/
120 300
/
149 300
/
149 400
/
205 500
/
260 300

Linear
Thermal
Exp. Coef.³ D696 F^o 35 35 85 70 80 40 75 50 70 18

Heat
Melt Point F^o 220 230 330 342 315 465 515 525 590 N/A

Distortion
Temp. D648
@
264 psi 135 180 107 235 150 170 270 118 118 200-280

Fire Class UL 94 V-O V-O HB/V-2 V-O V-O V-O V-O V-O V-O

Composites USA, Inc.
One Peninsula Drive, North East, MD USA 21901
Tel: 1-410-287-2700 Fax: 1-410-287-5222
www.compositesusa.com

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