LOCTITE WEBINAR SERIES LOCTITE Instant Adhesives

Transcription

1 LOCTITE WEBINAR SERIES LOCTITE Instant Adhesives

2 Meet Your Presenters Doug Lescarbeau Austen Williams Market Development Director Application Engineer 2

3 Agenda 1. Who is Henkel? 2. Introduction to Instant Adhesives 3. Surface Preparation for Instant Adhesives 4. Introduction to Hybrid Structural Adhesives Loctite 4090 : The First Hybrid Structural Instant Adhesive Speed and Strength in One 5. Features & Benefits 6. Key Technical Data 7. Frequently Asked Questions 8. Equipment & Additional Resources 9. Questions 3

4 Agenda 1. Who is Henkel? 2. Introduction to Instant Adhesives 3. Surface Preparation for Instant Adhesives 4. Introduction to Hybrid Structural Adhesives Loctite 4090 : The First Hybrid Structural Instant Adhesive Speed and Strength in One 5. Features & Benefits 6. Key Technical Data 7. Frequently Asked Questions 8. Equipment & Additional Resources 9. Questions 4

5 Who we are Global leading positions in consumer and industrial businesses Consumer Businesses Laundry & Home Care Beauty Care Industrial Business Adhesive Technologies 5

6 Who we are Henkel at a glance 2015 Almost 50,000 employees worldwide 2.9 bn adjusted 1 operating profit (EBIT) Around 18.1 bn sales, +3.0% organic sales growth 61% of our sales generated by our top 10 brands 43% of our sales generated in emerging markets 139 years of brand success 1 Adjusted for one-time charges/gains and restructuring charges. 6

7 Adhesive Technologies Business units Business Units General Industry Packaging & Consumer Goods Automotive & Metals Aerospace Electronics Consumer & Craftsmen Top Brands 7

8 Adhesive Technologies Leading solution provider in adhesives, sealants & functional coatings Customer Partnership Innovation Leader Deep industry expertise Leading brands for industrial customers and consumers Best-in-class quality and service Global presence and customer proximity Comprehensive portfolio of leading technologies Innovation driver in the industry Shaping industry megatrends (e.g. sustainability, lightweight) 8

9 Agenda 1. Who is Henkel? 2. Introduction to Instant Adhesives 3. Surface Preparation for Instant Adhesives 4. Introduction to Hybrid Structural Adhesives Loctite 4090 : The First Hybrid Structural Instant Adhesive Speed and Strength in One 5. Features & Benefits 6. Key Technical Data 7. Frequently Asked Questions 8. Equipment & Additional Resources 9. Questions 9

10 Why use Instant Adhesives? Main Advantages Bonding to wide variety of substrates % Full Cured RT Cure speed perfect for automation Strength, N/mm Cure Time, minutes G-10 Epoxy Aluminum Steel Polycarbonate PVC Phenolic Extremely versatile and easy to use Provide fast assembly solutions for a variety of materials including plastics, elastomers and metals Most cure at room temperature without the need for heat or light energy Very high bond strengths to plastic, metal, rubber, wood and many other materials Cure Time, seconds 60% RH 40% RH 20% RH 10

11 Instant Adhesives How Do Instant Adhesives Compare to Other Technologies? Strength Instant Adhesive Epoxy Acrylic PUR Contact Adhesive MS Silicone PU Flexible Bond strength depends on substrate and load type N/mm 2 11

12 Instant Adhesives How Do Instant Adhesives Compare to Other Technologies? Speed Instant Adhesive Epoxy Acrylic PUR Contact Adhesive MS Silicone PU Flexible UV UV 0 5s 1min 10min 30min 1h 3h 12h 12

13 Loctite Engineered Instant Adhesives Technology Leadership: A History of Innovation First industrial CAs Gel Toughened Polyolefin primer Low bloom Flexible High temperature CA activators Low bloom / low odor First hightemperature Surface insensitive Light cure 2-component CA = Instant Adhesive 13

14 Loctite Instant Adhesive Technology Developments CA technology development Acidic / porous bonding Toughened grades Flexible grades Light Cure Gap fill Speed / structural strength 14

15 General Introduction Curing Mechanism Cyanoacrylates are polymerising in the presence of weak bases rapidly This is called ANIONIC polymerisation The surface moisture (OH-) is initiating the polymerization H C N H C N B - + C C B C C - H O OR H O OR 15

16 General Introduction Curing Mechanism Curing video Acidic stabilizer Surface moisture Monomers 16

17 General Introduction Classification of CA Monomers H H C C C N COCH 3 H H C C C N COCH 2 CH 3 Methyl O Ethyl O H H C C C N COCH 2 CH 2 OCH 3 Alkoxy ethyl O 17

18 General Introduction Classification of CA Monomers R(alkyl) Odor Adhesion Temp resistance Methyl high high high Ethyl high high Alkoxy moderate moderate moderate 18

19 General Introduction Cure Speed 100% 60 % Very fast fixture speed Final cure within 12 to 24 hours 1 min 12 hours 19

20 General Introduction Cure Speed Cure speeds are influenced by: Relative humidity Gap Substrates Temperature ph of surface moisture Activators Humidity Bond gap Substrate 60 % 40 % 0.01 mm 0.05 mm NBR ABS 20 % 0.1 mm Steel 20

21 Fixture Time (s) General Introduction Fast Speed & High Strength Fixture Time Results on Various Substrates Steel Aluminum Neoprene Rubber, nitrile ABS PC Substrate 21

22 Lap shear strength, MPa General Introduction Fast Speed & High Strength Lap Shear Strength * * Steel Aluminum Neoprene Rubber, nitrile ABS PC Substrate 22

23 % RT strength General Introduction Hot Strength Hot strength 140% 105% 70% 35% 0% Loctite 406 ethyl cyanoacrylate Steel lap shears Temp., ºC 23

24 % of initial strength General Introduction Environmental Resistance Environmental Resistance 140% 105% Air, 22 ºC 70% 98% RH, 40 ºC, PC 35% 98% RH, 40 ºC, Steel 0% Loctite 406 ethyl cyanoacrylate Steel lap shears Exposure time, hours 24

25 General Introduction Solvent Resistance Gradually weaken Negligible Polarity Polar Non-polar Group Water Carboxylic acids Amides Alcohols Amines Ketones (aldehydes) Esters Alkyl halides Ethers Aromatics Alkanes 25

26 General Introduction Storage For best product life, refrigerate for longterm storage prior to opening After opening, if bottle will be used daily, we recommend storing it tightly closed and not refrigerated After opening, use within 30 days 26

27 General Introduction Rule of Thumb Not recommended for glass or glazed ceramics Not ideal for a large bonding area Liquid monomer can cause stress cracks on some sensitive plastics Some products may cause blooming 27

28 General Introduction Limitations Poor long-term durability on glass Rigid, poor impact and peel strength Limited gap cure Odor, blooming Bonds to skin Stress cracking Poor solvent resistance Non-polar solvents negligible Polar solvents will gradually weaken CAs 28

29 Agenda 1. Who is Henkel? 2. Introduction to Instant Adhesives 3. Surface Preparation for Instant Adhesives 4. Introduction to Hybrid Structural Adhesives Loctite 4090 : The First Hybrid Structural Instant Adhesive Speed and Strength in One 5. Features & Benefits 6. Key Technical Data 7. Frequently Asked Questions 8. Equipment & Additional Resources 9. Questions 29

30 Surface Preparation Introduction The adhesion occurs at the surface Any contaminant reduces the adhesion strength Surface preparation is essential for adhesive performance Accelerate cure speed Final bond strength Chemical resistance Thermal performance Reliability of joint Contamination Cohesion Adhesion 30

31 Surface Preparation Introduction Sources of contaminants Protection Handling Process (example: mold release agents) The material itself (oxide layers) Environment Others 31

32 Surface Preparation Introduction How to achieve better adhesion? 1. Cleaning and degreasing (ODC-Free Cleaner & Degreaser) 2. Other surface pretreatments Mechanically (e.g., abrading, grit blasting) Chemically (e.g., etching) Thermally (flame treatment) Electrically (corona, plasma treatment) 3. Use of primer 32

33 Surface Preparation Primers Primers Loctite 770, 7701 (medical grade) Used for: Polyethylene Polypropylene Santoprene * and silicone rubber PTFE Do not use on easy-to-bond plastics and rubbers. Works with all cyanoacrylates Fluorescent On-part life: 8 hours Application: spray, brush and dip Chemistry base: aliphatic amine Solvent: heptane * Santoprene is a trademark of Exxon Mobil Corporation. 33

34 Lab Shear Strength, MPa Surface Preparation Primers Typical Lap Shear Results Effect of Primer ABS Polycarbonate Polypropylene Santoprene * Substrates Ethyl CA Ethyl CA + primer * Santoprene is a trademark of Exxon Mobil Corporation. 34

35 Surface Preparation Accelerators General purpose: Loctite 712, 7109, 7113, 7452 Medical grade: Loctite 713, 7451 Speed cure and depth of cure Carrier solvents: acetone, IPA, heptane Require flash-off time ODC-free formulations Pre-application: Provide faster fixture speed Accelerate final cure Post-application: Cure excess adhesive 35

36 Agenda 1. Who is Henkel? 2. Introduction to Instant Adhesives 3. Surface Preparation for Instant Adhesives 4. Introduction to Hybrid Structural Adhesives Loctite 4090 : The First Hybrid Structural Instant Adhesive Speed and Strength in One 5. Features & Benefits 6. Key Technical Data 7. Frequently Asked Questions 8. Equipment & Additional Resources 9. Questions 36

37 Hybrid Technology Structural Instant High bond strength and impact resistance Speed and substrate versatility 37

38 Loctite 4090 The First Hybrid Structural Instant Adhesive Speed and Strength in One Unique hybrid technology patent protected* Highest combination of critical attributes in one product First instant adhesive suitable for structural application Opens new application areas * U.S. patent granted. 38

39 Agenda 1. Who is Henkel? 2. Introduction to Instant Adhesives 3. Surface Preparation for Instant Adhesives 4. Introduction to Hybrid Structural Adhesives Loctite 4090 : The First Hybrid Structural Instant Adhesive Speed and Strength in One 5. Features & Benefits 6. Key Technical Data 7. Frequently Asked Questions 8. Equipment & Additional Resources 9. Questions 39

40 Features & Benefits Speed Strength High Impact Resistance Up to 300 F Temperature Resistance High Moisture Resistance GAP Filling up to

41 Speed Characteristics AMBIENT (21 C) COLD TEMP (5 C) Zero gap fixture Time seconds seconds Gap fixture time: minutes 3-6 minutes (0.04 ) Nozzle life Approx. 4 minutes Gap filling Up to

42 Bonds to a Wide Range of Substrates Substrate N/mm 2 psi Steel Aluminum Rubber Steel 17 2,420 Stainless 15 2,120 Aluminum 7.6 1,100 Nitrile ABS ABS Polycarbonate Acrylic Polycarbonate 6.9 1,000 Epoxy 9.1 1,320 Wood (Oak)

43 In.-lbs. Impact Resistance Side Impact Results Mild steel Aluminum Generic CA product 43

44 strength (psi) Heat Resistance 1000 hours heat aging on GBMS CA = F 300 F 360 F Generic CA product 44

45 % Retention Moisture Resistance 150 F / 95% relative humidity aging GBMS % strength retention Lap shears of grit-blasted mild steel (GBMS) are bonded and then exposed to 150 F and 95% relative humidity for times shown. Then lap shears are pulled apart and the % of the original strength is shown. 100 ~85% ~62% ~37% Generic CA 0% CA = hrs 1000 hrs After 1,000 hours, a generic CAbonded GBMS lap shear fell apart. 45

46 Agenda 1. Who is Henkel? 2. Introduction to Instant Adhesives 3. Surface Preparation for Instant Adhesives 4. Introduction to Hybrid Structural Adhesives Loctite 4090 : The First Hybrid Structural Instant Adhesive Speed and Strength in One 5. Features & Benefits 6. Key Technical Data 7. Frequently Asked Questions 8. Equipment & Additional Resources 9. Questions 46

47 Technical Data TECHNICAL DATA Color Clear to light yellow depending on gap fill Appearance High viscosity gel Mix ratio (volume) 1:1 Working time 3 to 5 minutes Shelf life (total) 12 months refrigerated. Package is stamped with a use-by date. 47

48 Properties of Cured Material PROPERTIES OF CURED MATERIAL Lap shear strength, ISO 4587, after 24 hours, 72 o F Steel (grit-blasted) Aluminum (etched) Polycarbonate 2400 psi 1900 psi 1000 psi High gap fill Up to 0.2 depending on bond geometry Temperature resistance -40 o F to 300 o F Chemical resistance Very good chemical/solvent resistance against motor oil, gasoline, ethanol, isopropanol, and water 48

49 Key Takeaways Instant adhesives provide fast assembly solutions for a variety of materials including plastics, elastomers and metals Loctite 4090 is the first hybrid instant adhesive combining speed and strength This hybrid adhesive can be used on a broad range of substrates Loctite 4090 has impact, heat and moisture resistance. 49

50 Agenda 1. Who is Henkel? 2. Introduction to Instant Adhesives 3. Surface Preparation for Instant Adhesives 4. Introduction to Hybrid Structural Adhesives Loctite 4090 : The First Hybrid Structural Instant Adhesive Speed and Strength in One 5. Features & Benefits 6. Key Technical Data 7. Frequently Asked Questions 8. Equipment & Additional Resources 9. Questions 50

51 FAQs 1. Blooming Q: The CA I am using is creating a white haze or frosting around my bond area. Can this be prevented & does this condition affect my bond performance? A: The white haze or frosting is called blooming. There are measures to reduce blooming and generally blooming does not affect the performance of the bond. 51

52 FAQs Blooming Sometimes CAs bloom molecules lift from a surface and fall around the bond line where there are proportionally large quantities of moisture. The deposit is WHITE and is particularly noticeable on DARK and CLEAR surfaces. Excess adhesive here causes blooming on surrounding surfaces Blooming can be prevented by: Using less adhesive Speeding up the cure Using a grade with a high molecular weight 52

53 FAQs Blooming Product blooming may occur under several conditions including high humidity, or if the assembly is placed in an enclosed area. These conditions prevent monomer vapors from fully dissipating; the vapors react with atmospheric moisture, condense and settle back down on the parts. Blooming is primarily an aesthetic condition. Ways to minimize or eliminate blooming: 1. Keep a constant humidity of 50% +/- 5%, use a dehumidifier when needed. 2. Apply less product. 3. Apply cross-ventilation from fans so that vapors do not settle on parts. 4. Avoid large fillets. Attempts should be made to keep the adhesive within the bond line. 5. Avoid acidic surfaces. Acidic surfaces slow down the CA cure mechanism and keep the adhesive uncured longer. 6. Avoid vacuum environments. A vacuum environment will pull un-reacted molecules from the exposed adhesive. 7. Avoid the use of old material. Out-of-date product does not cure as quickly as fresh material. 8. Avoid extremes in temperature. Elevated temperatures will drive off un-reacted monomer from within the adhesive causing a blooming effect. 9. Test a low-odor, low-bloom cyanoacrylate. 53

54 FAQs 2. Curing Problems Q: Why is my CA not curing properly or curing much slower than normal? Nothing has changed in my application or with my parts. 54

55 FAQs Curing Problems Factors to consider Low relative humidity (less than 40%) resulting in a surface that is too dry Parts should be exposed to atmospheric moisture long enough prior to bonding to allow moisture in the air to come into equilibrium with the part surface When low humidity cannot be controlled, try a compatible accelerator on one of the surfaces to help neutralize the acidic stabilizer in the CA Acidic surfaces (ph <7) may delay or prevent cure Part tolerance variations that can result in bond line gaps greater than large gaps will promote incomplete cure of the CA 55

56 FAQs 3. Stress Cracking Q: My cyanoacrylate left thin cracks in plastic after it cured. What caused this and can it be prevented? 56

57 FAQs Stress Cracking Stress cracking in thermoplastics is caused when existing internal stresses from either processing or external forces are exposed to low molecular weight solvents or liquid adhesives. The longer the adhesive remains liquid the greater possibility of stress cracking. To help prevent this condition, consider changing the plastic type or post-bake the plastic parts to reduce internal stress. Try using less adhesive and less clamping force on the parts. Test a faster curing adhesive such as a UV adhesive. 57

58 FAQs 4. Storage Q: My instant adhesive hardened in the bottle after using it for only several months. How long is a CA still usable after opening? 58

59 FAQs Storage The general recommendation is that a cyanoacrylate should be used within 30 days after opening. Higher ambient temperatures (such as experienced in an unconditioned plant during summer months) may shorten this recommended time. Product should be stored refrigerated prior to use and then maintained at room temperature after opening (no re-refrigeration). For applications that do not use an entire CA package within 30 days, consider recommending a smaller package size. 59

60 Agenda 1. Who is Henkel? 2. Introduction to Instant Adhesives 3. Surface Preparation for Instant Adhesives 4. Introduction to Hybrid Structural Adhesives Loctite 4090 : The First Hybrid Structural Instant Adhesive Speed and Strength in One 5. Features & Benefits 6. Key Technical Data 7. Frequently Asked Questions 8. Equipment & Additional Resources 9. Questions 60

61 Dispense Valves Dispense Systems and Controllers Hand-Held Dispensing Light Cure Solutions Motion Control Consumables AG Equipment Total Solutions Equipment.loctite.com 61 LOCTITE WEBINAR SERIES Designing with Adhesives

62 Equipment Selection Criteria checklist What are the considerations when choosing appropriate equipment? Adhesive chemistry? Adhesive package? 1-part or 2-part adhesive? Adhesive pot life / work life? Viscosity of adhesive? Dispense pattern? Curing requirements? Size / configuration of customer parts? Production rate? Low level detection? External interface? Capital budget? 62 LOCTITE WEBINAR SERIES Designing with Adhesives

63 AG Equipment Resources Equipment Website equipment.loctite.com Technical Repository E-Commerce Product Information Equipment Services rental/loaners, spare parts, calibrations, repairs, warranty and technical support, etc LOCTITE Equipment Sourcebook 63 LOCTITE WEBINAR SERIES Designing with Adhesives

64 Henkel Adhesive Resources na.henkel-adhesives.com/oem The Adhesive Sourcebook Plastic, Rubber and Metal Bonding Guides Application assistance LOCTITE ( ) Over-the-phone assistance Technical Information Services team 8 a.m.-5 p.m. Eastern time In-person assistance Local Adhesive & Sealant Specialists Technical Customer Service department Testing services Process development Authorized Loctite Industrial Products Distributors ~ 5,000 branches in USA 64 LOCTITE WEBINAR SERIES Designing with Adhesives

65 General Intro to the Advantages of Adhesives Customer Success Stories & Videos Solutions Guide Adhesive Testing Lab Information & Videos Information on Additional Webinars Contact Us 65 LOCTITE WEBINAR SERIES Designing with Adhesives

66 na.henkel-adhesives.com/oem NA General Manufacturing Site Advanced Information The Adhesive Sourcebook Product Categories Market Segments Equipment Website Plastic, Rubber and Metal Bonding Guides Product Search TDS, MSDS & RoHS Buy Now How-to videos Literature, Case Histories, Quality Certifications & Additional Resources OEM Blog 66 LOCTITE WEBINAR SERIES Designing with Adhesives

67 Why Henkel? Adhesive supplier considerations Breadth & depth of product offering Technical service / support Quality standards / industry certifications Testing capabilities Global reach and resources Process knowledge / dispensing equipment Industry expertise / innovativeness Overall value of offering 67 LOCTITE WEBINAR SERIES Designing with Adhesives

68 Agenda 1. Who is Henkel? 2. Introduction to Instant Adhesives 3. Surface Preparation for Instant Adhesives 4. Introduction to Hybrid Structural Adhesives Loctite 4090 : The First Hybrid Structural Instant Adhesive Speed and Strength in One 5. Features & Benefits 6. Key Technical Data 7. Frequently Asked Questions 8. Equipment & Additional Resources 9. Questions 68

69 Questions? Doug Lescarbeau Market Development Director Austen Williams Application Engineer 69

70 Thank You! Except as otherwise noted, all marks used are trademarks and/or registered trademarks of Henkel and its affiliates in the U.S. and elsewhere. = registered in the U.S. Patent and Trademark Office Henkel Corporation. All rights reserved.