JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - 64

KNOW-HOW
Manufacturing
g…/… ESTRIM – a fast-demoulding injection technology for epoxy composites

The lack of faster manufacturing methods has – so far – slowed the development of a wider number of lightweight structural or decorative parts which could be used by mass-production industries unable to cope with long processes still relying on heavy manual operations. Cannon developed an alternative process, designing production equipmentfitting with the processing characteristics of state of the art epoxy based chemical formulations (RTM systems) and able to overcome the two basic problems described above.

remains constant throughout the complete process. By increasing the temperature, the viscosity drops. Mixing is achieved by pulverizing – with appropriate injectors or “jets” – the reactive components in a cylindrical mixing chamber whose diameter can be as small as 4-5 mm. When not in use, the mixing chamber is tightly sealed by a preciselymachined piston which prevents the components from being mixed at the wrong time (Fig. 1).

The solution
To appeal to the automotive industry, a plastics moulding process should be characterized by a very repetitive performance and cycle times (part-to-part) of three minutes or less. This fast manufacturing requires demoulding times which are up to ten times shorter than those currently provided by the most commonly-used process: Resin Transfer Moulding (RTM). The experience of Cannon in another field of the plastics industry – polyurethanes in which both companies are recognised leaders has taught that fast demoulding primarily depends on a very fast injection time. This is a direct function of three fundamental process parameters: - viscosity of the liquid formulation, which derives directly from the employed chemistry and from the temperature, - wettability of the reinforcing material, which depends upon the geometry of its deposition within the mould, and from intrinsic characteristics of the mat or fabric, - pressure exerted on the mould’s inner surfaces by the liquid, which progressively encounters resistance to its flow due to the progressive rise in viscosity and to the presence of a solid mass of reinforcing material in each part of the mould cavity. It is therefore of paramount importance to fill the mould before the viscosity of the liquid formulation becomes unmanageable.

Fig. 1: Cannon FPL Functional Scheme

The innovative approach
Employed successfully for more than three decades in other reacting processes such as polyurethanes, DCPD and nylon RIM, the high-pressure metering and mixing technology has allowed the industry to reach production rates and mechanical properties once unheard of. The same approach has been used for epoxy.

The computerized control determines the precise amount of liquid materials required by each different mould and calculates a precise injection time as a function of the pump’s actual output. When the machine’s control sends an injection command, the piston sealing the mixing chamber is operated hydraulically, the mixing chamber is opened, and the liquid components are conveyed through pressure-inducing pulverising nozzles. This way, the chemicals meet and mix thoroughly in the small cylindrical cavity, converting their kinetic energy into turbulence. The blended liquid is forced through an “L”-shaped circuit within the head. This non-linear path converts the turbulent forces into laminar flows – an ideal dispensing situation for applications where any air inclusion into a liquid formulation must be avoided. This laminar flow of liquid leaves the head through an injection nozzle that fits into a hole drilled in the mould. All the blended material is therefore quickly transferred into the cavity without waste. At the end of the injection, the control panel sends a signal to the hydraulic pack, which quickly closes the mixing head and places it in standby position. This quick action perfectly cleans out the cylindrical wall of the mixing chamber, removing any residual liquid. Therefore, these heads do not require any flushing with solvents or detergents. There are neither moving parts to be washed at

High pressure: how does it work?
Based on positive-displacement pumps that can reach pressures (measured at the head injectors) above 200 bar, the highpressure technology provides the desired solutions for this problem. The chemical components are warmed in storage tanks up to the required temperature and are kept separately in continuous recirculation through the circuit of the dosing machine up to the inner part of the mixing head. This ensures that their viscosity

64

jec composites magazine / No59 August - September 2010



Table of Contents for the Digital Edition of JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010

Cover
Contents
NEWS WORLDWIDE
Goodrich Corporation acquires Crompton Technology Group
Reichhold expands manufacturing capacity in Turkey
LAP wins order from Airbus
Toho Tenax Europe to supply carbon fibre for Bombardier Cseries
Glass Fibre - A global competition for breakthrough composite applications
Agenda of events
Innovation - Phenolic prepreg products for interior applications
BUSINESS
Market survey: China Yuan Long FRP broadens its range of skills beyond pultrusion
Shanghai Tung Hsing Technology: steady growth through diversified markets
Niche Market Bio-based polymers: a revolutionnary change
Trends Kenaf, a fibre for the future: the Harusmas experience
Mechanical properties of naturalfibre-reinforced composites
FEATURE
Design - Wave impact resistance of racing yacht composites
Infusion - Regatta racing at the highest level
Adhesive - Flame-retardant adhesive for power packs in marine applications
Control - Validation of marine structures - Testing appraoches
Resin - New styrene-free resin: better for Catamaran Cruisers and the environment
VOC - Presatured wipes reduce VOC emissions
High performance - 48 days, 7 hours, 44 minutes around the world
USERS' PLATFORM
Composites in the world
Ying Yang table
The most luxurious golf car ever made
New carbon fibre band watch
Successful partners - A prefabricated FRP bridge for the oil and gas industry
Low-cost structural thermoplastic composites for transport
Making modular bus body shells from composite materials
Tougher fire-rated bus parts thanks to intumescent topcoat
KNOW-HOW
Bonding - Composite bonders - meeting the requirements of modern engineering
Manufacturing - ESTRIM - a fast-demoulding injection technology for epoxy composites
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - Cover
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - 2
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - 3
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - 4
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - 5
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - Contents
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - 7
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - Toho Tenax Europe to supply carbon fibre for Bombardier Cseries
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - Glass Fibre - A global competition for breakthrough composite applications
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - 10
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - Agenda of events
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - Innovation - Phenolic prepreg products for interior applications
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - 13
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - Market survey: China Yuan Long FRP broadens its range of skills beyond pultrusion
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - Shanghai Tung Hsing Technology: steady growth through diversified markets
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - 16
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - Niche Market Bio-based polymers: a revolutionnary change
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - 18
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - 19
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - 20
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - Trends Kenaf, a fibre for the future: the Harusmas experience
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - 22
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - 23
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - Mechanical properties of naturalfibre-reinforced composites
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - 25
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - 26
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - 27
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - Design - Wave impact resistance of racing yacht composites
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - 29
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - Infusion - Regatta racing at the highest level
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - 31
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - Adhesive - Flame-retardant adhesive for power packs in marine applications
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - 33
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - 34
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - Control - Validation of marine structures - Testing appraoches
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - 36
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - 37
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - Resin - New styrene-free resin: better for Catamaran Cruisers and the environment
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - 39
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - VOC - Presatured wipes reduce VOC emissions
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - 41
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - 42
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - High performance - 48 days, 7 hours, 44 minutes around the world
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - 44
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - 45
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - New carbon fibre band watch
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - Successful partners - A prefabricated FRP bridge for the oil and gas industry
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - 48
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - 49
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - Low-cost structural thermoplastic composites for transport
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - 51
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - 52
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - Making modular bus body shells from composite materials
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - 54
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - Tougher fire-rated bus parts thanks to intumescent topcoat
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - 56
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - 57
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - Bonding - Composite bonders - meeting the requirements of modern engineering
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - 59
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - 60
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - 61
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - 62
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - Manufacturing - ESTRIM - a fast-demoulding injection technology for epoxy composites
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - 64
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - 65
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - 66
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - 67
JEC COMPOSITES MAGAZINE - Issue #59 - August/September 2010 - 68
https://www.nxtbook.fr/newpress/jeccomposites/jcm2007_135
https://www.nxtbook.fr/newpress/jeccomposites/jcm_2020_Q1_Innovation_Report
https://www.nxtbook.fr/newpress/jeccomposites/jcm2005_Special_Issue3
https://www.nxtbook.fr/newpress/jeccomposites/jcm2005_134
https://www.nxtbook.fr/newpress/jeccomposites/jcm2003_133
https://www.nxtbook.fr/newpress/jeccomposites/jcm2001_132
https://www.nxtbook.fr/newpress/jeccomposites/jcm1911_Special_Issue2
https://www.nxtbook.fr/newpress/jeccomposites/jcm1911_131
https://www.nxtbook.fr/newpress/jeccomposites/jcm1909_130
https://www.nxtbook.fr/newpress/jeccomposites/jcm1907_129
https://www.nxtbook.fr/newpress/jeccomposites/jcm1905_128
https://www.nxtbook.fr/newpress/jeccomposites/jcm1903_Special_Issue1
https://www.nxtbook.fr/newpress/jeccomposites/jcm1903_127
https://www.nxtbook.fr/newpress/jeccomposites/jcm1901_126
https://www.nxtbook.fr/newpress/jeccomposites/jcm1811_125
https://www.nxtbook.fr/newpress/jeccomposites/jcm1810_124
https://www.nxtbook.fr/newpress/jeccomposites/jcm1808_123
https://www.nxtbook.fr/newpress/jeccomposites/jcm1807_122
https://www.nxtbook.fr/newpress/jeccomposites/jcm1805_121
https://www.nxtbook.fr/newpress/jeccomposites/jcm1804_120
https://www.nxtbook.fr/newpress/jeccomposites/jcm1803_119
https://www.nxtbook.fr/newpress/jeccomposites/jcm1802_119-Supplement_Innovation_Report
https://www.nxtbook.fr/newpress/jeccomposites/jcm1801_118
https://www.nxtbook.fr/newpress/jeccomposites/jcm1711_117
https://www.nxtbook.fr/newpress/jeccomposites/jcm1710_116
https://www.nxtbook.fr/newpress/jeccomposites/jcm1708_115
https://www.nxtbook.fr/newpress/jeccomposites/jcm1707_114
https://www.nxtbook.fr/newpress/jeccomposites/jcm1706_113
https://www.nxtbook.fr/newpress/jeccomposites/jcm1704_112
https://www.nxtbook.fr/newpress/jeccomposites/jcm1703_111
https://www.nxtbook.fr/newpress/jeccomposites/jcm1701_110
https://www.nxtbook.fr/newpress/jeccomposites/jcm1611_109
https://www.nxtbook.fr/newpress/jeccomposites/jcm1610_108
https://www.nxtbook.fr/newpress/jeccomposites/jcm1608_107
https://www.nxtbook.fr/newpress/jeccomposites/jcm1607_106
https://www.nxtbook.fr/newpress/jeccomposites/jcm1605_105
https://www.nxtbook.fr/newpress/jeccomposites/jcm1604_104
https://www.nxtbook.fr/newpress/jeccomposites/jcm1603_103
https://www.nxtbook.fr/newpress/jeccomposites/jcm1601_102
https://www.nxtbook.fr/newpress/jeccomposites/jcm1511_101
https://www.nxtbook.fr/newpress/jeccomposites/jcm1510_100
https://www.nxtbook.fr/newpress/jeccomposites/jcm1509_99
https://www.nxtbook.fr/newpress/jeccomposites/jcm1507_98
https://www.nxtbook.fr/newpress/jeccomposites/jcm1505_97
https://www.nxtbook.fr/newpress/jeccomposites/jcm1504_96
https://www.nxtbook.com/newpress/jeccomposites/jcm1503_95
https://www.nxtbook.com/newpress/jeccomposites/jcm1501_94
https://www.nxtbook.com/newpress/jeccomposites/jcm1412_93
https://www.nxtbook.com/newpress/jeccomposites/jcm1410_92
https://www.nxtbook.com/newpress/jeccomposites/jcm1409_91
https://www.nxtbook.com/newpress/jeccomposites/jcm1406_90
https://www.nxtbook.com/newpress/jeccomposites/jcm1405_89
https://www.nxtbook.com/newpress/jeccomposites/jcm1404_88
https://www.nxtbook.com/newpress/jeccomposites/jcm1403_87
https://www.nxtbook.com/newpress/jeccomposites/jcm1401_86
https://www.nxtbook.com/newpress/jeccomposites/jcm1311_85
https://www.nxtbook.com/newpress/jeccomposites/jcm1310_84
https://www.nxtbook.com/newpress/jeccomposites/jcm1308_83
https://www.nxtbook.com/newpress/jeccomposites/jcm1307_82
https://www.nxtbook.com/newpress/jeccomposites/jcm1305_81
https://www.nxtbook.com/newpress/jeccomposites/jcm1304_80
https://www.nxtbook.com/newpress/jeccomposites/jcm1303_79
https://www.nxtbook.com/newpress/jeccomposites/jcm1301_78
https://www.nxtbook.com/newpress/jeccomposites/jcm1212_77
https://www.nxtbook.com/newpress/jeccomposites/jcm1210_76
https://www.nxtbook.com/newpress/jeccomposites/jcm1208_75
https://www.nxtbook.com/newpress/jeccomposites/jcm1207_74
https://www.nxtbook.com/newpress/jeccomposites/jcm1206_73
https://www.nxtbook.com/newpress/jeccomposites/jcm1204_72
https://www.nxtbook.com/newpress/jeccomposites/jcm1203_71
https://www.nxtbook.com/newpress/jeccomposites/jcm1201_70
https://www.nxtbook.com/newpress/jeccomposites/jcm1111_69
https://www.nxtbook.com/newpress/jeccomposites/jcm1110_68
https://www.nxtbook.com/newpress/jeccomposites/jcm1108_67
https://www.nxtbook.com/newpress/jeccomposites/jcm1107_66
https://www.nxtbook.com/newpress/jeccomposites/jcm1105_65
https://www.nxtbook.com/newpress/jeccomposites/jcm1104_64
https://www.nxtbook.com/newpress/jeccomposites/jcm1103_63
https://www.nxtbook.com/newpress/jeccomposites/jcm1101_62
https://www.nxtbook.com/newpress/jeccomposites/jcm1011_61
https://www.nxtbook.com/newpress/jeccomposites/jcm1010_60
https://www.nxtbook.com/newpress/jeccomposites/jcm1009_59
https://www.nxtbook.com/newpress/jeccomposites/jcm1006_58
https://www.nxtbook.com/newpress/jeccomposites/jcm1005_57
https://www.nxtbook.com/newpress/jeccomposites/jcm1004_56
https://www.nxtbook.com/newpress/jeccomposites/jcm1003_55
https://www.nxtbook.com/newpress/jeccomposites/jcm1001_54
https://www.nxtbook.com/newpress/jeccomposites/jcm0911_53
https://www.nxtbook.com/newpress/jeccomposites/jcm0910_52
https://www.nxtbook.com/newpress/jeccomposites/jcm0909_51
https://www.nxtbook.com/newpress/jeccomposites/jcm0907-08_50
https://www.nxtbook.com/newpress/jeccomposites/jcm0906_49
https://www.nxtbook.com/newpress/jeccomposites/jcm0904_48
https://www.nxtbook.com/newpress/jeccomposites/jcm0903_47
https://www.nxtbook.com/newpress/jeccomposites/jcm0901_46
https://www.nxtbook.com/newpress/jeccomposites/jcm0811_45
https://www.nxtbook.com/newpress/jeccomposites/jcm0810_44
https://www.nxtbook.com/newpress/jeccomposites/jcm0809_43
https://www.nxtbook.com/newpress/jeccomposites/jcm0807_42
https://www.nxtbook.com/newpress/jeccomposites/jcm0806_41
https://www.nxtbook.com/newpress/jeccomposites/jcm0805_40
https://www.nxtbook.com/newpress/jeccomposites/jcm0803_39
https://www.nxtbook.com/newpress/jeccomposites/jcm0801_38
https://www.nxtbook.com/newpress/jeccomposites/jcm0712_37
https://www.nxtbook.com/newpress/jeccomposites/jcm0710_36
https://www.nxtbook.com/newpress/jeccomposites/jcm0709_35
https://www.nxtbook.com/newpress/jeccomposites/jcm0707_34
https://www.nxtbook.com/newpress/jeccomposites/jcm0706_33
https://www.nxtbookmedia.com