If you need to accurately determine the performance of the gas through the rubber conveyor belt, you can use the gas to make the rubber not expand or corrode, and make the constant pressure stable on the surface of the sample. The basic method is as follows. You can refer to the previous operation of rubber belt steel ball pressing to determine the detailed operation method than before:

　　具体操作要点主要是我们需要保持在恒定的温度下空气室,是一个圆形的样本分为高压侧和低压侧连接高压侧能够保持恒压气藏,低压侧的透气性,由于低压侧体积小,透气气室的仪器,测量设备和恒温设备等等;气室是一个可以发送样品的外围夹紧装置在密闭条件下,偏高与气压计的精度高,低压端应用的困难和容易透气微孔硬胶图片,烧结微孔材料如不锈钢圆片的填充空间,保持内部的体积更小,并支持标本变形,低压侧是使用小直径管通过可拆卸连接器连接到毛细管基准刻度线之间的空腔的总数量不应超过规定的大小,在恒温设备可以使用恒温浴或使用能保持房间空气温度和测试温度差异值在±0.5℃,设备标准的测试温度是23℃。

　　The main points of operation are that we need to keep the air chamber at a constant temperature. It is a round sample, which is divided into high pressure side and low pressure side. The high pressure side can keep the gas reservoir at a constant pressure. The low pressure side has small volume. The instruments, measuring equipment and constant temperature equipment of the air chamber. The air chamber is a peripheral clamping device that can send samples under closed conditions, The high side and the high accuracy of the barometer, the difficulties in the application of the low-pressure end and the pictures of porous hard glue easy to ventilate, the filling space of sintered microporous materials such as stainless steel discs, keep the internal volume minimum, and support specimen deformation, the low-pressure side is the total number of cavities connected to the capillary reference scale line through the detachable connector, which should not exceed the specified size, In the constant temperature equipment, the constant temperature bath can be used or the difference between the room air temperature and the test temperature can be kept within ± 0.5 ℃, and the standard test temperature of the equipment is 23 ℃.

　　如果想要测试条件使用温度接近，一般可以从以下温度中选择:40岁,55岁,70,85,100,125,150,175,200,225和250℃,对任何指定的测试或比较测试,允许的温度偏差在±0.5℃,可以直接从削减或橡胶制品硫化电影,如果有环形槽空气室内,双方的样品模边缘应该环肋,所以相应的环槽的固定空气室内,为平面标本。

　　If you want the test conditions to be close to the use temperature, you can generally choose from the following temperatures: 40 years old, 55 years old, 70,85100125150175200225 and 250 ℃. For any specified test or comparative test, the allowable temperature deviation is ± 0.5 ℃. You can directly cut or vulcanize the rubber products from the film. If there is an annular groove air chamber, the edge of the sample mold of both sides should be annular rib, Therefore, the corresponding fixed air chamber of the ring groove is a plane specimen.

　　可以通过适当的规范的丁基橡胶“O”型人物,把试样夹在中间,固定在透气室内保持紧张,为了保证气密性,夹紧表面在空气室,很少真空油脂是允许的,但有效的样品表面可能没有油,有效样本表面的测厚仪,把六个不同测量值,精确到0.02毫米的厚度,取算术平均6分,作为样本的厚度值,每一个点的厚度值不应超过10%的平均厚度值,使用垂直安装的形式渗透工具注入适量的毛细管液体,然后转动手柄来调整容器的液位的高度高于毛细管参考范围关闭旁路。

　　The sample can be clamped in the middle through the appropriate standard butyl rubber "O" type person, and fixed in the ventilation room to maintain tension. In order to ensure the air tightness, the clamping surface is in the air room, and few vacuum grease is allowed, but the effective sample surface may not have oil. The thickness gauge of the effective sample surface, accurate to 0.02mm, takes the arithmetic average of 6 points, As the thickness value of the sample, the thickness value of each point shall not exceed 10% of the average thickness value. Use a vertically installed penetration tool to inject an appropriate amount of capillary liquid, and then turn the handle to adjust the height of the liquid level of the container higher than the capillary reference range to close the bypass.

　　半月板和基准校准横切,开始记录时间与半月板移动相应的距离,在测试的过程中,随时调整液体瓶的高度,保持平衡液面两侧的毛细管,透气性达到稳态时,大约每2分钟记录一个相应的距离半月板一般5 - 6次,测试时间为10小时,测试后,本文通过对半月板移动距离和时间参数的研究，得出了橡胶输送带的透气性与输送带的准确关系曲线。

　　The meniscus and the benchmark calibration crosscut start to record the time and the corresponding distance of meniscus movement. During the test, adjust the height of the liquid bottle at any time to keep the capillary on both sides of the liquid level balanced. When the air permeability reaches the steady state, record a corresponding distance every 2 minutes, generally 5-6 times. The test time is 10 hours. After the test, In this paper, through the study of the moving distance and time parameters of the meniscus, the accurate relationship curve between the permeability of rubber conveyor belt and conveyor belt is obtained.