一 產品介紹
拉伸沖擊試驗機主要用于在規定的拉伸沖擊速度下,測定塑料試樣斷裂所需能量的測試。 用于測定塑料等非金屬材料的脆性、韌性。
GB/T 13525-92《塑料拉伸沖擊性能試驗方法》
ASTM D1822-2006《使塑料及電絕緣材料斷裂所需的拉伸沖擊能量的測試方法》
"/> ASTM D1822-2006《使塑料及電絕緣材料斷裂所需的拉伸沖擊能量的測試方法》
ISO 8256-2004《塑料-拉伸-沖擊強度的測定》"/>
產品搜索
在線客服
 工作時間
周一至周五 :8:30-17:30
周六至周日 :9:00-17:00
聯系方式

聯系人:冀柏宏

電 話:

(+86)0314-2266829

手  機:

(+86)18831479808  

(+86)13191633902  

微信:18831479808

郵 箱:[email protected]

地 址:河北省承德技術產業開發區上板城鎮卸甲營村


掃描查看手機版網站

產品詳情
XJL塑料拉伸沖擊強度試驗機
分享到:
XJL塑料拉伸沖擊強度試驗機 
產品詳情

XJL塑料拉伸沖擊強度試驗機                       
   指針式控制,直觀易于讀數,液晶屏顯示,自動計算沖擊結果。
一 拉伸沖擊試驗機產品介紹

拉伸沖擊試驗機主要用于在規定的拉伸沖擊速度下,測定塑料試樣斷裂所需能量的測試。 用于測定塑料等非金屬材料的脆性、韌性。
二 拉伸沖擊試驗機符合標準:

GB/T13525《塑料拉伸沖擊性能試驗方法》

ASTM D1822-2013《使塑料及電絕緣材料斷裂所需的拉伸沖擊能量的測試方法》

ISO 8256-2004《塑料-拉伸-沖擊強度的測定》

三 拉伸沖擊試驗機技術參數:

技術參數:

1)沖擊速度:3.8m/s 
2)沖擊能量:15J 、25J任選
3)擺錘力矩:pd15J=8.03848Nm pd25J=13.39746Nm
4)擺錘預揚角:150°
5)打擊中心距:395mm
6)使用溫度:(10~35)℃
7)試樣尺寸:長度80±2mm 寬度15±0.5mm 厚度<4mm
夾具間的自由長度:30±2mm

2)   電源: 220VAC-15%~220VAC 10% 50HZ (單相三線制)

術語:拉伸沖擊強度:試樣受拉伸沖擊力破壞所消耗的沖擊能與試樣試驗前最小橫截面的比值KJ/m2

永久斷裂伸長率:試樣斷裂后1min時斷裂部分拼接所測得的標距相對于原始標距的變化率(%)

工作原理:試樣一端固定在擺錘式沖擊試驗機的夾具上,另一端固定在丁字頭上,由擺錘的單程擺動提供能量,沖擊丁字頭,使試樣在較高拉伸形變速率下破壞,丁字頭與試樣的一部分一起被拋出,測定擺錘消耗的能量及試樣破壞前后的標距,經校正,計算得到試樣的拉伸沖擊強度和永久斷裂伸長率。不同類型或不同尺寸的試樣的試驗結果不能比較。

試驗裝置:

1、試驗機的擺錘必須為剛性擺錘,對2mm厚的試樣,沖擊時必須使擺錘的物理碰撞中心與試樣厚度中心重合。

2、 試驗機的夾具不得使試樣被夾破裂和在試驗中滑動,夾爪可有銼刀樣的齒,齒的尺寸可因試樣而異。

3、丁字頭應由輕質和極低彈性的材料制成,在受沖擊時不得發生塑性型變。

試樣:試樣由注塑或機械加工而成。薄膜或薄片試樣可用沖刀裁取。在制樣過程中不得出現試樣過熱現象。如在機械加工中使用冷卻劑,應不影響試樣性能。試樣應表面無損傷,內部無缺陷,厚度均勻。試樣標距的標記應不影響試樣性能。硬質材料試樣不得扭曲。如被測材料各方向表現出不同的拉伸沖擊性能,應在不同方向上分別取樣。

試樣形狀和尺寸:試樣厚度優先選用1mm。由產品裁取的試樣,保留原厚度;厚度大于4mm的試樣應機械加工為4mm。對于很薄的薄膜,可以使用多層試樣,但應重疊良好。

試樣數量:至少5個試樣或按產品標準的規定。


選擇合適的擺錘使沖擊能量讀數在試驗機有效范圍內,參照下表:

(在能夾緊試樣的前提下盡量選擇質量小的丁字頭)

擺錘沖擊能量J

丁字頭質量g

15.0

25.0

30±1或60±1

60±1或120±1

試驗結果的計算和表示:

1、拉伸沖擊強度的計算:

式1

           W

E=                ×1000

      d ×h

式中:E—拉伸沖擊強度,KJ/m2

W—校正的試樣破壞所消耗的能量,J

d—試樣厚度,單位為毫米(mm)

h—試樣寬度,單位為毫米(mm)

試驗結果以每組試樣拉伸沖擊強度的算術平均值表示,取3位有效數字。

2、能量校正

由于擺錘沖擊試樣所消耗的能量Ws中包括丁字頭飛出所消耗的能量,必須對能量進行校正,以求出試樣破壞所消耗的能量。

校正的試樣破壞所消耗的能量W按式2計算:

式2

        W′ W″

W=             

       2

式中:W—校正的試樣破壞所消耗的能量,J

W′—彈性碰撞時試樣破壞所消耗的能量,J

W″—非彈性碰撞時試樣破壞所消耗的能量,


Tensile impact strength tester for XJL plastic

Pointer control, intuitive and easy to read, LCD display, automatic calculation of impact results.

Introduction of tensile impact testing machine

Tensile impact testing machine is mainly used for testing the energy required for fracture of plastic samples under the specified tensile impact speed. It is used to determine brittleness and toughness of nonmetallic materials such as plastics.

Two the tensile impact testing machine meets the standards:

GB/T13525 "test method for tensile impact properties of plastics"

ASTM D1822-2006 "test method for tensile impact energy required for fracture of plastics and electrical insulating materials"

ISO 8256-2004 "plastics tensile determination of impact strength"

Three tensile impact testing machine technical parameters:

Technical parameters:

1) impact speed: 3.8m/s

2) impact energy: 15J, 25J optional

3) pendulum torque: pd15J=8.03848Nm pd25J=13.39746Nm

4) pendulum preheating angle: 150 degrees.

5) strike center distance: 395mm

6) use temperature: (10~35) C

7) sample size: length 80 + 2mm width 15 + 0.5mm thickness <4mm

Free length of fixture: 30 + 2mm

2) power supply: 220VAC-15% to 220VAC 10% 50HZ (single phase three wire system)

Terminology: Tensile Impact Strength: The ratio of the impact energy consumed by tensile impact failure of the specimen to the minimum cross-section of the specimen before testing, KJ/m2

Permanent elongation at break: the rate of change (%) of the gauge measured by splicing the fractured parts with respect to the original gauge at 1 minute after fracture

Working Principle: One end of the specimen is fixed on the jig of the pendulum impact testing machine, the other end is fixed on the T-shaped head. The energy is provided by the one-way swing of the pendulum, and the T-shaped head is impacted. The specimen is destroyed at a higher tensile deformation rate. The T-shaped head is thrown out together with a part of the specimen, and the energy consumed by the pendulum and the specimen are measured. The tensile impact strength and the permanent elongation at break of the specimens were calculated after calibration. The test results of different types or sizes of samples can not be compared.

Test device:

1. The pendulum of the testing machine must be a rigid pendulum. When impacting a specimen 2 mm thick, the physical impact center of the pendulum must coincide with the thickness center of the specimen.

2. The clamp of the testing machine must not cause the sample to be clamped to break and slide during the test. The clamp claw may have a file-like tooth, and the tooth size may vary according to the sample.

3, the T-shaped head should be made of light and very low elastic material, and plastic deformation will not occur when subjected to impact.

Sample: the sample is made by injection or mechanical processing. Thin film or sheet sample can be cut by punching knife. The phenomenon of overheating of samples is not allowed during sample preparation. If coolant is used in mechanical processing, the performance of the sample shall not be affected. The specimen should be free from damage, with no defects and uniform thickness. The marking of specimen gauge should not affect the performance of the sample. Hard material specimens shall not be twisted. If the tested materials show different tensile impact properties in all directions, they should be sampled in different directions.

Sample size and shape: 1mm is preferred for specimen thickness. The sample cut from the product should be kept at the original thickness; the specimen with a thickness greater than 4mm should be machined to 4mm. For thin films, multi-layer specimens can be used but should overlap well.

Sample size: at least 5 samples or according to product standards.

Select the appropriate pendulum to make the impact energy reading in the effective range of the tester.

(try to choose a small T-shaped head on the premise of clamping the sample).

Impact energy of pendulum J

T-head quality G

Fifteen

Twenty-five

30 + 1 or 60 + 1

60 + 1 or 120 + 1

Calculation and expression of the test results:

1. Calculation of tensile impact strength:

Type 1

W

E= * 1000

D x H

Type: E - tensile impact strength, KJ/m2

W - corrected energy consumption of sample destruction, J

D - the thickness of the specimen is millimeter (mm).

H - the width of the specimen is millimeter (mm).

The test results were expressed by the arithmetic mean of tensile impact strength of each group, and 3 effective figures were obtained.

2. Energy correction

Since the energy Ws consumed by the pendulum impact specimen includes the energy consumed by the T-shaped head flying out, the energy must be corrected to calculate the energy consumed by the specimen failure.

The energy consumed by the corrected specimen is calculated according to formula 2: W.

Type 2

W 'W "

W=

Two

Medium: W - corrected energy consumption of sample destruction, J

W '- the energy consumed by specimen destruction during elastic collision, J

W "- energy consumed by specimen failure during inelastic collision.


广东时时任选2 快速时时是私吗 赛车冠军走势图怎么看 时时彩原理计算公式 吉林时时怎么玩法 重庆ssc微信时时彩群 彩票35选7出号规律 下载幸运飞艇手机版 最新时时彩计划软件 我想开个网上棋牌室 快速时时能玩吗 福彩36选72019065开奖结果 秒速时时假不假 彩票平台找漏洞刷钱 海南体彩飞鱼在线观看 赛车大小破解方法