Preview

Tensile Strength

Satisfactory Essays
Open Document
Open Document
488 Words
Grammar
Grammar
Plagiarism
Plagiarism
Writing
Writing
Score
Score
Tensile Strength
INCORPORATION OF DEVULCANIZED RUBBER INTO A VIRGIN TIRE TREAD RUBBER COMPOUND
Mohammad Meysami, Shuihan Zhu, and Costas Tzoganakis
Department Of Chemical Engineering, University of Waterloo
Waterloo, Ontario, Canada
Elongation at break

Characterization

•Devulcanization of waste rubber with scCO2 in an extruder is an environmentally friendly continuous process;
•A reasonably high throughput of devulcanized rubber has been obtained in the devulcanization process in a twin screw extruder, which was stable
•Devulcanized rubber obtained from the devulcanization process can be re-vulcanized again by adding proper amount of curing chemicals
• To incorporate the devulcanized rubber into a virgin tire compound for material cost- reduction ;
•To study the impact of devulcanized rubber utilization on tire compound performance ;

•Mooney viscosity
•Curing characterizations
•Tensile properties ( Tensile strength, Elongation at break) •Hardness
•Hysteresis (heat build up)
•Cut and chip (% of mass loss)

20
12

Objectives

120

Mooney Viscosity

Devulcanization

Valve

Feeder
CO2
Cylinder

50 rpm
200 C

Syringe Pump
Thermocouples

35
30
25
20
15
10

0

10

20

30

40

85.5%
80
60
40
20

Pressure
Transducers

Extruder

Die

Curing characterizations

10

20

30

40

Hardness
70
65

62

63

63

62

0

10

20

30

60
55
50
45
40
35
30

Devulcanized rubber content in virgin tire compound (%)

Gear box 80.4%

Devulcanized rubber content in virgin tire compound (%)

Hardness (shore A)

Valve

Mooney viscosity (ML(1+4))

Sc Co2 injection system

94.7%

100

0

45
40

100%

0

50

Twin screw extrusion, CO2 injection, and data acquisition
Control Panel

Retention of Elongation at break
(%)

Background

Devulcanized rubber content in virgin tire compound (%)

Hysteresis
Hysteresis

1.4

30

Recipe for sample preparation
Continue Reading
View Writing Issues

You May Also Find These Documents Helpful

  • Powerful Essays

    NSW HSC CHEMISTRY - the development of rubber and electrolysis of Sodium Hydroxide the products and their uses.
    • 2945 Words
    • 10 Pages

    NSW HSC CHEMISTRY - the development of rubber and electrolysis of Sodium Hydroxide the products and their uses.

    Natural rubber [poly-cis-isoprene(C5H8)n]. the latex consists of a polymer colloid of a monomer called isoprene. The precipitation of the rubber particles from the latex produces an elastic, sticky, gummy mass. In 1839, Charles Goodyear found that by vulcanising (ie. Cross-linking the polymer chains) the natural rubber a non sticky elastic was produced. This vulcanised natural rubber soon became used in a wide variety of products including tyres, insulation, matresses and rainwear. Rubber production could not keep up with demand, especially from the vehicle industry. A synthetic replacement was needed. And today synthetic polymer production accounts for 80% of the worlds rubber production.…

    • 2945 Words
    • 10 Pages
    Powerful Essays
    Read More
  • Powerful Essays

    Muscle Strength
    • 4588 Words
    • 19 Pages

    Muscle Strength

    1)The muscle that runs on a diagonal from the lower ribs to the iliac crest is the:…

    • 4588 Words
    • 19 Pages
    Powerful Essays
    Read More
  • Better Essays

    Muscular Strength
    • 1323 Words
    • 6 Pages

    Muscular Strength

    The strong person is defined as one who is able to exert great bodily or muscular power. Another component of muscular fitness that is crucial is muscular endurance, which is the ability to perform a specific muscular action for a prolonged period of time. For example, performing 50 squats with a weight of 50 kilograms on the shoulders requires both attributes, 150 squats without weight requires more muscular endurance while the ability to perform a single squat with a weight of 200 kilograms depends on muscular strength. Different tests are used for assessment of these different components of musculoskeletal fitness. To determine the strongest person in the group, multiple factors needs to be taken into account, including age, height, gender,…

    • 1323 Words
    • 6 Pages
    Better Essays
    Read More
  • Good Essays

    Structural Strain Theory
    • 1300 Words
    • 6 Pages

    Structural Strain Theory

    If 100 people are released from prison, and 75 of them relapse back into their previous criminal behavior, is the prison system sufficient? (Page 10. No Place For Kids- The Case for Reducing Juvenile Incarceration.) Based off of Robert Merton’s structural strain theory, Kohlberg's morality scale, tragedy of the commons, and Walter Mischel's theory of delayed gratification, it can be proved that the United States Criminal Justice system is flawed.…

    • 1300 Words
    • 6 Pages
    Good Essays
    Read More
  • Better Essays

    Strength in Stripes
    • 1205 Words
    • 3 Pages

    Strength in Stripes

    Without rhetoric, literature would be terribly bland and so writers make a valiant effort to enhance their text with such devices. But what use is an interesting text if it is not understood? How could any point be made if the syntax is not well received? In The Tiger Is God, written by Stephen Harrigan, that is not the case. Harrigan uses such devices to state his point so clearly it seems to almost flow onto the page from a faucet and quickly absorbed by the sponge that is your mind. With his word choice and flare he easily emphasizes his point, like an arrow to the center of the target, that the tiger is an all mighty powerful creature.…

    • 1205 Words
    • 3 Pages
    Better Essays
    Read More
  • Good Essays

    Structural Strain Theory Summary
    • 725 Words
    • 3 Pages

    Structural Strain Theory Summary

    The city of Chicago, in the current times, has a reputation painted with crime and murder. Acts of violence within a fraction of the local population paints the rest of the city a color of negativity. To decrease the crime rate, Chicago leaders began to initiate cognitive behavioral therapy. In summary, the program held meetings ever so often to teach a select group of boys how to deal with situations that could easily escalate out of control. The results were astounding in the sense that the “Becoming a Man” program saw a 44 percent drop in arrest rates when comparing the students of the program to that of a non-participants. However, as the students graduate and no longer are a part of the program, the effects of said program dwindle with each passing year. One may say that the participants were returning to their usual behavior.…

    • 725 Words
    • 3 Pages
    Good Essays
    Read More
  • Satisfactory Essays

    The Strength-Based Model
    • 539 Words
    • 3 Pages

    The Strength-Based Model

    This paper will address social support and self sufficiency values and how they relate to the strength based model. Social support means receiving assistance from outside resources these resources can be family members, friends, church but most often it is the assistance of government programs and self-sufficiency when one has the resources and capabilities to take care of themselves without the help or assistance of outside resources. Both are essential to the well-being of families and individual. Strength based model focuses on the family and individuals positive traits in an effort to assist them in becoming self sufficient. Self-sufficiency provides a family and individual with independence, structure, financial security and moreover stabilization…

    • 539 Words
    • 3 Pages
    Satisfactory Essays
    Read More
  • Good Essays

    Theory of Strain
    • 712 Words
    • 3 Pages

    Theory of Strain

    It is sometimes said that it is not how you play the game, but whether you win or lose. In considering the theory of strain, what social programs have been developed to address the strain theory and discuss how effective you feel they are? The Strain Theory attempts to explain how factors such as poverty, homelessness, lack of parenting and lack of opportunity are a major contributor to crime and the forming of delinquent subcultures. In order to circumvent these factors programs and resources were designed to foster stable family relationships, enhance children’s physical and emotional well-being, and establish an environment to develop strong cognitive skills.The first and foremost of these programs would be Head Start, Launched in 1965 by its creator and first director Jules Sugarman (Administration for Children and Family 's, 2013), Head Start was originally conceived as a catch-up summer school program that would teach low-income children in a few weeks what they needed to know to start kindergarten. Head Start helps to create healthy development in low-income children age’s three to five. It also offers services that depend on each child and family 's culture and experience, to influence all aspects of a child 's development and learning. Everyone in American society which includes the poorest of the poor are socialized to aspire toward high achievement and success. Competition and success rank amongst the highest values in American society, they are taught in school, glorified by public authorities, and glamorized by the media. In America ones worth is measured by material possessions and monetary success. This success however, is expected to be achieved through honest and conventional means. These conventional means are regulated by societal norms. The limitation to the strain theory is that it focuses very intensely on the opportunities given or lack thereof. It takes little into account in regards to other outside influences that may steer ones…

    • 712 Words
    • 3 Pages
    Good Essays
    Read More
  • Good Essays

    Strength-Based Approach
    • 1145 Words
    • 5 Pages

    Strength-Based Approach

    Bielefeld (2014) argues that Australia’s history of failing to protect Indigenous peoples from racially discriminatory legislation, and the problem of cultural racism remains in contemporary law and policy today. The First Peoples of Australia have experienced extreme trauma at the hands of the Government. The effects of colonisation and past policy eras continue to impact on the health outcomes of the Aboriginal and Torres Strait Islander Peoples today, and also limits the capacity for trustful and respectful relationships to form between Health Professionals and First Peoples. Recognising the history and past of Aboriginal and Torres Strait Islanders, whilst also acknowledging the strengths and positive aspects of the Communities and Individuals…

    • 1145 Words
    • 5 Pages
    Good Essays
    Read More
  • Powerful Essays

    Strain Theory
    • 1687 Words
    • 7 Pages

    Strain Theory

    The criminological theory that best describes why individuals engage in this violent act is Strain Theory. Strain theory is that someone is being pressured into achieving accepted goals. Even though they may not have the means to do it, they are expected to achieve it. Strain Theory can lead to the lack of being able to achieve a goal, the loss of a loved one or friend, and negative stimuli that means being physically or verbally abused. These can all lead to a violent act because of all the pressure that is being put on them, they become so strained that they cannot handle it anymore. Sometimes people expect so much from someone and do not take the chance to really understand a person and what they can handle. Sometimes if a person loses someone…

    • 1687 Words
    • 7 Pages
    Powerful Essays
    Read More
  • Good Essays

    Strength in what remains
    • 1341 Words
    • 6 Pages

    Strength in what remains

    In the book “Strength in what remains” by Tracy Kidder, the main protagonist named Deo was a man that faced many hurdles in his life. From escaping the Genocide in Rwanda and Burundi, which was because of the domestic racial dispute between Hutus and Tutsi (groups of ethnic people) to his time in New york. Deo faced insurmountable odds and opposition. Despite this set back, it seemed as if providence was on Deos side, granting him countless fortunes and blessings. Many different factors can be attributed to Deo’s success but nevertheless, luck and his hard work was what paved his path forward. To attribute all of Deo’s success to luck would be to undermine the sheer willpower he possesses and his willingness to fight for his dreams. Deos experience with Mohammad and McKenna shows us glimpses of the drive he has to achieve success. His self-motivation and character is what ultimately led him to achieve the goal he set for himself. The reason for the overwhelming amount of people trying to help him were not only based on luck, but also based on Deo’s personality, his beliefs which he obtained from his parents, and those that he held on his own.…

    • 1341 Words
    • 6 Pages
    Good Essays
    Read More
  • Good Essays

    Cumulative Strain Theory
    • 602 Words
    • 3 Pages

    Cumulative Strain Theory

    The development of sophisticated theories to explain why school shootings occur is a new area of research and before the 1990s, few theories on school rampage shootings existed (Rocque, 2012). In examining theories to address this health issue, consideration will be given to “Cumulative Strain Theory” to explain how school shootings occur and “Attachment Theory” to address the recovery of victimized youth in the wake of a school shooting.…

    • 602 Words
    • 3 Pages
    Good Essays
    Read More
  • Good Essays

    Strain Theory
    • 820 Words
    • 4 Pages

    Strain Theory

    According to strain theory, delinquency occurs when there is a lost connection between achieving one’s goals and the ability to actually achieve them. Society pressures individuals to achieve despite one's inabilities to. When the means of achieving these goals is illegal, delinquency occurs. Some of these goals are materialistic in the United States, such as a big house, a nice car, or wealth. To strain theorists, the ability to achieve one’s goals is dependent on their social class. Adults or children living in the lower classes are unable to fulfill their goals conventionally; this state fuels frustration and anger which can be referred to as their strain. Illegal ways of achieving their goals could include acts of violence and theft.…

    • 820 Words
    • 4 Pages
    Good Essays
    Read More
  • Good Essays

    Strain Theory
    • 912 Words
    • 4 Pages

    Strain Theory

    allows one to see that a wide range of strains will be unrelated to crime…

    • 912 Words
    • 4 Pages
    Good Essays
    Read More
  • Good Essays

    Theory of Elasticity and Plasticity
    • 9152 Words
    • 37 Pages

    Theory of Elasticity and Plasticity

    AFFILIATED INSTITUTIONS ANNA UNIVERSITY :: CHENNAI 600 025 REGULATIONS - 2013 M.E. STRUCTURAL ENGINEERING I TO IV SEMESTERS (FULL TIME) CURRICULUM AND SYLLABUS SEMESTER I SL. COURSE NO CODE THEORY 1.…

    • 9152 Words
    • 37 Pages
    Good Essays
    Read More