urethane mixing and dispensing equipment |
| 03-13 13:43:50 来源： 作者： |
|
urethane mixing and dispensing equipment Inquiry (采购产品): urethane mixing and dispensing equipment 1. Background: Electric Boat Corporation installs 2” tk tiles. The ?”-3/8” seams between adjacent tiles require filling with a urethane blend – see Table I. 2. Current process requires first blending Part B ingredients into a homogenous mixture – see Table I for Part B mixture. 3. Parts A and B are weighed out separately and are then mixed together into a homogenous mixture. 4. The homogenous mixture of Part A and Part B is placed into a Semco dispensing tube and then injected into the seams between adjacent tiles. 5. Since the seam filling is performed at a different location from the mixing area, Parts A and B are currently placed in individual containers, nitrogen blanketed to prevent atmospheric / moisture contamination, and stored at specified storage temperatures – see Table A. When needed the 2 part kits of Part A and B are opened on-site, mixed together, placed in a Semco tube, and then injected into the seams. 6. Production Rate: (10) to (100) seam fill kits are used each day. 7. Electric Boat Corporation is interested in automating a portion or the entire process. Therefore investigating three operations: a. Mixer capable of blending the materials in Part B, listed in Table I (i.e. Versalink P-1000, Elftex 8 carbon black, Cab-o-sil, and Expancell 551DE microspheres). Batch size: 4000-8000 grams b. Mixer / dispenser capable of blending the materials in Part B, listed in Table I (i.e. Versalink P-1000, Elftex 8 carbon black, Cab-o-sil, and Expancell 551DE microspheres). Batch size: 4000-8000 grams. Capable of dispensing 150 grams (+ 2 grams) of blended Part B. Storage tank must keep Part B at proper storage temperature and provide nitrogen blanket to prevent contamination. c. Mixer / dispenser capable of blending / dispensing Parts A and B, listed in Table I, into a Semco tube or equivalent dispensing tube. Semco tube or equivalent dispensing tube is 10 to 20 oz in size. Mixer / dispenser must be portable. Storage tanks must keep Parts A and B materials at proper storage temperatures, listed in Table I. Parts A and B must be kept under a nitrogen blanket to prevent contamination. Storage tanks for Parts A and B materials must facilitate being refilled or change out. Batch size: Part A – 2000 to 4000 grams; Part B – 5000 to 10000 grams. Table I 1. Part A a. Isonate 2143L 1). Manufacturer: Air Products & Chemicals 7201 Hamilton Blvd Allentown, Pa. 18195-1501 1-800-345-3148 2). Physical Properties: a.) specific gravity: 1.20 – 1.22 @ 25oC b). viscosity: 33 cps @ 20oC 2. Part B a. Versalink P-1000 1). Manufacturer: Air Products & Chemicals 7201 Hamilton Blvd Allentown, Pa. 18195-1501 1-800-345-3148 2). Physical Properties: a.) density: 0.98 g/cc @ 21oC b). viscosity: 3000 cps @ 40 oC 3). Part B composition: 86.41% by weight b. Elftex No. 8 Carbon Black 1). Manufacturer: Cabot Corp 157 Concord St Billerica, Ma. 01821 1-978-670-6959 2). Physical Properties: a.) density: 1.7-1.9 g/cc 3). Part B composition: 0.43% by weight c. Expancel 551DE 1). Manufacturer: Expancel Box 13000 850 13 Sundsvall Sweden 1-770-813-9126 (US) 2). Physical Properties: a.) density: 0.038 – 0.046 g/cc 3). Part B composition: 4.00% by weight d. Cab-o-sil, untreated fumed silica 1). Manufacturer: Cabot Corp 700 E. U.S. Highway 36 Tuscola, Il 61953-9643 1-217-253-3370 2). Physical Properties: a.) density: 2.2 g/cc @ 20oC 3). Part B composition: 9.16% by weight 3. Storage temperatures: a. Part A: 80-105 oF b. Part B: 80-120 oF 4. Blended urethane properties a. Part A to Part B mix ratio: 1: 4.54 by weight b. Viscosity: c. Uniform in color (i.e. no streaks) d. Cures to 84 (Shore A) hardness (i.e. 15 sec) **** Hidden Message ***** john suhr 06360 Company: electric boat corporation E-mail: jsuhr@ebmail.gdeb.com **** Hidden Message ***** jsuhr@ebmail.gdeb.com |
|
|
|
|
|
|
