簡介：
低溫脆性試驗機RR/LTB采用數字式控制水浴，精確的溫度控制器，帶有樣品沖孔及擺型沖錘。??測定低溫狀態下材料的抗沖擊性，溫度設定在使材料損壞溫度的50%。

標準配置：
* 數字式控制水浴
* 一體的磁力攪拌
* 溫度控制器
* 樣品沖壓孔和模具
* 測試樣品
* 擺捶

符合標準:
ISO R974,ASTM D746-73

Product Description
Designed to study the effects on plastic polymers when subject to impact loads at low temperature. Many materials which are flexible at normal ambient temperature become brittle at low temperatures, which severely affect the material?s impact strength. By plotting the percentage failure rate of the test samples against the reduction in temperature, the brittleness temperature where 50% of the test samples will fail can be determined as per the ASTM D746 and ISO R974 International Test Standard.

The Ray-Ran Low Temperature Brittleness Apparatus consists of a tank, which by using Dry Ice is bought to the starting temperature. The samples are placed into the clamping mechanism and fixed into the tank and subjected to a single blow after the specified conditioning period has elapsed. The samples are removed and examined to determine whether they have failed or not. The temperature and number of failures is then recorded. By increasing or decreasing the temperature the lowest and highest temperature at which all the samples pass and fail can be determined.

Standard features include
Test specimen Cutter to produce test samples, Test specimen clamp to hold the test samples in a cantilever beam support, Test specimen striker, Insulated bath with digital temperature control and integral stirrer to ensure a uniform bath temperature, Temperature range from – 70oC to 200oC, Product user manual, CE mark of conformity, 1 year return to base warranty.

Optional accessories available
Type A, B or C Cutter, Specimen Clamps to customers specifications.

Test Description
To determine the Impact Resistance of polymer materials at low temperatures. The temperature is determined at which 50% of the test samples fail.

Part Numbers
RR/LTB – Low Temperature Brittleness Tester

Complies with Standard(s)
ISO 974, ASTM D746