热塑性塑料性能测试方法（Thermoplastic properties test method）

1、热塑性塑料性能测试方法（Thermoplastic properties test method）The PPT document may not have a good browsing experience at the WAP end. It is recommended that you choose TXT, or download the source file to the native view.The main properties of thermoplastic plasticsStretchability (Tensile properties) - Tensile S

2、trength (Ts) and elongation stretchability (Tensile properties), Tensile Strength (Ts) and elongation (Te) and elongation (Te) bending properties, Flexural properties) - bending Strength (Fs) and the bending modulus of bending properties, Flexural properties) - bending Strength (Fs) and the bending

3、modulus (Fm) (Fm) Impact Strength and bending modulus (Impact the Impact Strength, Impact Strength) flame retardant (Flammability) flame retardant (Flammability), Heat distortion Temperature (Heat Heat deformation Temperature (Heat Deflection Temperature) liquidity (Melt liquidity (Melt Flow Index)

4、Electrical (Electrical Electrical (Electrical properties) Rockwell Hardness (Rockwell Rockwell Hardness (Rockwell Hardness) proportion (Specific proportion (Specific Gravity) Mold Shrinkage (Mold Mold Shrinkage (Mold Shrinkage)The Tensile Properties of Tensile Properties (Tensile Properties) Propert

5、ies),To measure basic physical properties of high polymer material, impose stress on material, in order to determine basic physical properties of high polymer material, impose stress on material, measured variable quantity, calculate stress and stress strain curve is the most common method. The stre

6、ss and strain curves are the most common methods. To fasten on the ends of the spline with instruments, axis tensile load, instruments for fixed well, axis tensile load, until the destruction of the calculation method of stress and the distortion is the tensile test. The calculation method is tensil

7、e test.Tensile stress: tensile stress: sigma = F/A elongation: elongation: epsilon =? L/L * 100% *Tensile stress strain curve of plastic materialCalculation of tensile stress strainTensile Stress, Tensile Stress) : before the specimen deformation, on the size of Tensile force per unit area. Tensile

8、stress: the tensile force applied to the unit area before deformation. Specimens (Tensile elongation Strain) : the original lines between the length of the changes because of the action of Tensile force. Elongation: the variation of the length of the original line between the length of the original

9、line due to the stretching force. Yield Point: in the stress strain curve, even if the load does not increase, the elongation rate also begins to rise to the Point of Yield: the stress strain curve, even if the load does not increase, is called the Yield Point. The stress at this time is Yield Stren

10、gth, and the deformation rate at this time is called the Yield point. The stress at this time is Yield strength and Elongation at Yield. Yield elongation. Tensile Modulus, Tensile Modulus) : within the range of deformation rate lower, stress and strain are usually in a straight line: Tensile Modulus

11、 on the deformation rate lower interval, relationship, and the range of the ratio of stress and strain (Tensile stress/elongation elongation) relationship,The ratio of stress to strain in this interval (tensile stress elongation) is known as tensile modulus. Breaking Strength: refers to the tensile

12、force at the point of fracture. Fracture strength: the corresponding tensile force at Break Point. Elongation at the corresponding Elongation at the Break point. Elongation at Break Point: the elongation at Break Point. On the corresponding elongation Tensile Strength (Tensile Strength) : a yield po

13、int of material, the Tensile Strength is refers to the yield Strength; Non-tensile strength: material with yield point, tensile strength refers to yield strength; The tensile strength is the strength of the raw material. The tensile strength is the strength of the raw material. Note: the mechanical

14、properties of polymer materials, due to its inherent viscoelasticity, the deformation speed or ring around Note: the mechanical properties of polymer materials, due to its inherent viscoelastic, environment is very sensitive and is very sensitive, so the above property after the high polymer materia

15、l is relatively or used as a basic choice standard is preferred. It should be noticed when designing products based on this. Standard time is good. This is the basis for the design of the product.GB1040 standard tensile spline and related dimensions of tensile spline and related dimensionsTest stand

16、ard: the standard gauge of drawing test is GB1040, ASTM D638, ISO527, and its contents are similar. The contents are similar. Test equipment: electronic universal testing machine equipped with fixtures capable of moving at a certain speed. Test equipment: electronic universal testing machine equippe

17、d with fixtures capable of moving at a certain speed. The equipment is also suitable for compression, bending and shearing. The equipment can also be used for compression, bending, shearing and other tests. Test speed: because tensile speed had a great influence on the tensile properties of the mate

18、rial test, the test speed: because tensile speed had a great influence on the tensile properties of the material testing, so must be based on different material, not the same size to suitable tensile speed. It is necessary to take appropriate stretching speed according to different materials and dif

19、ferent sizes.Bending Properties (Flexural Properties) PropertiesThe spline on the lengths of the two fulcrum, the spline on the lengths of the two fulcrum, with a certain speed in the middle part of loading time varying curved, loading time varying curved, until the cause of broken or reach a certai

20、n amount of bending stress in distortion meter calculate method for bending test. The calculation method is the bending test.Bending Strength (Flexural Strength) : at a certain speed stress in the center of the spline, the spline break bending Strength: stress in the center of the spline at a certai

21、n speed, bad or 5% deformation when the Strength of the deformation intensity. The intensity of a bad or deformed amount. Bending strength is a countervailing test for measuring the bending of a spline. Countertest.Bending Modulus, Flexural Modulus) : refers to the imposed from the top of the spline

22、 center the size of the force and the bending Modulus: the ratio of the deformation produced by spline. The larger the bending modulus, the stronger the rigidity, the smaller the bending modulus and the deformation ratio of the spline. The larger the bending modulus, the stronger the rigidity, the s

23、maller the bending modulus, the softer the plastic. Soft.Bending strength: bending strength: Fs = (3Pmax x t) / 2bh2 bending modulus: bending modulus: Fm = (t3 x m) / 2bh2: the width of the spline is the width of the spline; Where: b is the width of the spline; T is the distance between the two poin

24、ts; The initial inclination of the chart; Distance; M is the initial inclination of the graph; 3Pmax is the maximum load (stress). For maximum load (maximum load stress)Test standard: the standard gauge of drawing test is GB9341, ASTM D790, ISO178 and its contents are similar. The contents are simil

25、ar. Testing equipment: electronic universal testing machine. The equipment is also suitable for compression, stretching and testing equipment: electronic universal testing machine. The equipment is also suitable for compression, tensile and shear test. Such tests. Pressure speed: the pressure speed

26、varies according to the type of spline (H&L) and the axial interval compression speed: the pressure speed varies according to the type of spline (figure below) (L), please refer to the following table. Please refer to the table below.Impact Strength, Impact Strength, Impact Strength, Strength) (poly

27、mer materials in the general case, meet more easily Impact fracture. Polymer materials in the general case, more easily meet the Impact fracture. Is the same size as hard, when slowly effect on polymer spline, wont produce rupture, hard, when slowly effect on polymer spline, not broken, but when a s

28、udden rapid effect, spline will break. Quick action, spline will break. The Impact Strength of spline parts or bear the degree of Impact, the Impact Strength of spline parts or bear the degree of Impact, usually referring to spline in fracture in the form before the break to absorb energy. The Impac

29、t Strength with spline shape, absorption before the crack energy. The Impact Strength with spline shape, show different value test method and test conditions, therefore cannot be classified as the basic material properties. The value of the different, therefore cannot be classified as the basic mate

30、rial properties. The Izod Impact test and Impact test and Impact Charpy Impact test and Impact test are pendulum test, test of pendulum test, the difference is the Izod Impact test is to spline Impact test is one end of the spline is vertical clamp, one end of the vertical clamp, and Charpy Impact t

31、est is to spline level clips on both ends, but with the basic principle of the two phase.Impact tester of the impact tester, Charpy impact tester, Izod impact testerPreparation of splineIzod impact spline impact spline sizeCharpy impact spline impact splineFlame retardant (Flammability) plastic due

32、to its easy processing and low price,Plastics because of its easy processing and low price, in many ways instead of the metal material to make and has several features such as flame retardancy and heat resistance, but compared to the metal, used, and has several features such as flame retardancy and

33、 heat resistance, but compared with metal and fragile nature, likely to be the cause of the fire, so to prevention, fragile and likely to be the cause of the fire, so to prevention, many countries are making all kinds of refractory products, in order to test the plastic refractory. A variety of fire

34、-resistant products are being made to test the resistance of plastics. Specification of fire-resistant specifications UL94: American UL (Underwriters Laboratory) rules on the combustion of plastics: the United States fire-resistance to the combustion of plastics: g, fire resistance: 5VA 5VB V - 0 V

35、- 1 V - 2 HB. . Iec 707: fire safety specifications of the international electrical and technical commission. : fire safety specifications of the international electrical and technical commission. CSA22.2 projects project No. 0.6 (Test A J) : applied to Canadian electrical and electronic products: a

36、pplied to Canadian electrical and project resin refractory specifications. Recently reached agreement with UL to certify UL test data, test data, resin fire resistance specification. Recently reached an agreement with the Certification test data, a new UL 5 v test method, after the UL test, only nee

37、d to provide the test report and used in the test method, after the test, the test method only need to provide the test report after test and to try the ID sample, without trial registration, also can issue in Canada sales of test sample in the tree, without trial registration, UL can also be issued

38、 in Canada sales of tree of lipid test and certificate (Certification). Lipid test and certificate.1, Horizontal Burning Test (HB Test: Horizontalm Test), Horizontal Burning Test () USES: applicable to Test of refractory lower material, use: suitable for refractory lower material Test, determination

39、 of combustion rate spline: 12.7 cm x 1.27 cm x thickness (5 spline spline: * thickness (a spline) by the thickness of a spline spline storage conditions: , humidity 50%, more than 48 hours Spline storage conditions: 23 C, humidity, hours Requirements of flame: movement of methane gas, blue flame, f

40、lame requirements: methane gas, 2.54 cm blue flame, flame burner for inclination blue The burner Angle 45 Fire rated HBThickness of 3.2 mm thickness combustion speed 3.81 cm/minThickness 3.2 mm thickness combustion rate 7.62 cm/min burn rate2, the Vertical Test (Vertical Test), the Vertical Test ()

41、USES: use: suitable for refractory tests, Test method for determination of burning time: Test method: coming into contact with the flame spline 10 seconds (one-way open spline, determination of seconds back open spline, spline seconds back open Burning time; Repeat the second time.Repeat for the sec

42、ond time () for five spline spline spline are implemented) and storage conditions: spline and storage conditions: the same as the HB test tests Requirements of flame: movement of methane gas, requirement of flame: movement of methane gas, single blue flame, height 2 cm of a single fire, highly rated

43、 V V V 0-1-2 two burning Flaming time 10 s 30 s 30 s second combustion With flame flameless time 30 s 60 s 60 s five spline two a spline Total time with flame combustion on the 50 s 250 s 250 s dripping physical presence of absorbent cotton, no nothingArticle 3, 5 v combustion test, combustion test

44、type combustion test, plate type combustion test) article (Bar type combustion test, the Plaque plate type combustion test) strip test plate type combustion test article type combustion (strip) combustion (Bar) test spline and storage conditions: spline and storage conditions: the same as the HB tes

45、t the same test Flame requirements: double flame (inner flame height 3.81 cm/outer flame flame requirements: double flame (12.7 cm) inner flame height outer flame height level) test method: coming into contact with the flame spline 5 seconds seconds, test method, the spline contact flame of seconds,

46、 and then put out the flame burning time determination of 5 seconds; Repeat 5 seconds, flame seconds, and determine the burning time; Repeat this plate type (Plaque) test plate type combustion () spline size: thickness (spline size: 15 cm x 15 cm x thickness (3 pieces) in x block test method: test m

47、ethod: with the same type of combustion Fireproof rank 5 va vb remark Combustion flame specimens and drop objects with and without the central flameless time Ignition absorbent cotton are burning through 60 s 300 C, more , changing once a year) in a)The HDT test device motioned to the test deviceThe

48、 sample size is less than 2.When it is necessary to use more than three at least more than one spline, more than when it is necessary to use more than one sample size 120 mm * 10 mm * 15 mm size spline forming should be placed more than 40 hours after experiment Need to set hours spline forming test

49、 againThermal deformation spline dimension thermal deformation temperature of the thermoplastic material (thermoplastic materials of the thermal deformation temperature (HDT) on different processing conditions are) produce differences, mainly depends on the important structure characteristics of the

50、 molding material, such as: produce differences, mainly depends on the important structure characteristics of the molding material, such as: molecular row of residual stress, crystal structure, crystallinity, orientation of filler, and the residual stress, crystal structure, crystallinity and orient

51、ation of filler, anisotropy, the change of the size of the spline produce certain effect, shrinkage rate, density, etc., the change of the size of the spline, shrinkage rate, density have influence, caused by the stress pattern of microscopic structure change, and lead to the change of physical prop

52、erties. The stress causes the subtle structural changes of the morphology, resulting in the change of physical properties.Melt Flow rate (Melt Flow Index)Under the specified temperature and load, the determination of molten state of the plastic material in ten minutes by certain rules under the spec

53、ified temperature and load, the determination of molten state of the plastic material in minutes by certain rules the flow rate of the die are relatively liquid parameter evaluation materials. The larger the melt flow index (), the flow of the fixed-mode hole is the parameter to evaluate the relativ

54、e fluidity of the material. The larger the melt index (MI), the better the material flow. The more liquid the material, the better. The greater the MI value, the better the liquidity, so the precision parts can be formed and the cycle time can be shortened. The more liquid the better, the better the value is, the better the liq