新闻动态
Your location:
Home
-
-
-
Factors affecting the mixing effect of internal mixer

Factors affecting the mixing effect of internal mixer

  • Categories:Industry News
  • Author:
  • Origin:www.hebeiaogesi.cn/
  • Time of issue:2020-10-21
  • Views:0

(Summary description)The rotor type and the number of ridges, the number of ridges is high, the shearing speed is high, but the heat rise is high, which shortens the mixing time and affects the mixing quality. Affected by the rotor type, the shear-type dispersion zone is between the rotor edge and the mixing chamber. The force range is large and wide, the shearing force is large, the efficiency is high, and the mixing quality is good. In the meshing type, the dispersion zone is between the two rotors, the shearing force is small, the heat generation is low, and the mixing time is long, and the dispersion effect is better.
2.上顶栓压力
上顶栓作用是将胶料保持在密炼室混炼工作区内,压力不足会引起胶料在密炼室壁和转子表面上滑动。适当压力可减小物料内的空隙,增加接触力。压力大会使胶料温度升高,混炼功率增大。装填容量不足,上顶栓压力则不能充分发挥作用,胶料分散不均。
3.温度
每种橡胶都有其最佳混炼温度范围。生胶、补强剂、软化剂的种类和用量决定混炼温升状况。在同一温度下,混炼时间越长分散越好。
4.填充量
取决于密炼机自身之有效容积。配方中生胶类型,补强填充剂和增塑剂的用量。生胶可塑度大者装料量应大些。填充系数(重量)在0.65~0.75之间,装料量不足混炼无法获得必要之剪切力。
5.投料的顺序,顺序效果各不同
在自动系统混炼中基本选择(使用多段混炼,根据胶料要求)生胶--提坨--加填充剂/配合剂--压坨--提坨--加软化剂压 --提坨--压坨 --提坨排料。
6.转速
转速与剪切速率成正比,剪切速率大则均匀混炼加快。提高转速会使胶温升高,导致胶料粘度和剪切应力降低。
7.时间
混炼时间长短与填充量的多少、配方温升状况有关,各种胶料混炼温度影响时间,密炼机转速、上顶栓压力也会影响混炼时间,所以在混炼工艺尽量缩短辅助时间和投料时间。
8.冷却水
冷却水温度一般设置15度,低粘度胶料不易用热水冷却,易粘转子,高粘度胶料采热水冷却, 提高冷却水温度可缩短混炼时间,降低能量消耗,提高生产效率。

Factors affecting the mixing effect of internal mixer

(Summary description)The rotor type and the number of ridges, the number of ridges is high, the shearing speed is high, but the heat rise is high, which shortens the mixing time and affects the mixing quality. Affected by the rotor type, the shear-type dispersion zone is between the rotor edge and the mixing chamber. The force range is large and wide, the shearing force is large, the efficiency is high, and the mixing quality is good. In the meshing type, the dispersion zone is between the two rotors, the shearing force is small, the heat generation is low, and the mixing time is long, and the dispersion effect is better.
2.上顶栓压力
上顶栓作用是将胶料保持在密炼室混炼工作区内,压力不足会引起胶料在密炼室壁和转子表面上滑动。适当压力可减小物料内的空隙,增加接触力。压力大会使胶料温度升高,混炼功率增大。装填容量不足,上顶栓压力则不能充分发挥作用,胶料分散不均。
3.温度
每种橡胶都有其最佳混炼温度范围。生胶、补强剂、软化剂的种类和用量决定混炼温升状况。在同一温度下,混炼时间越长分散越好。
4.填充量
取决于密炼机自身之有效容积。配方中生胶类型,补强填充剂和增塑剂的用量。生胶可塑度大者装料量应大些。填充系数(重量)在0.65~0.75之间,装料量不足混炼无法获得必要之剪切力。
5.投料的顺序,顺序效果各不同
在自动系统混炼中基本选择(使用多段混炼,根据胶料要求)生胶--提坨--加填充剂/配合剂--压坨--提坨--加软化剂压 --提坨--压坨 --提坨排料。
6.转速
转速与剪切速率成正比,剪切速率大则均匀混炼加快。提高转速会使胶温升高,导致胶料粘度和剪切应力降低。
7.时间
混炼时间长短与填充量的多少、配方温升状况有关,各种胶料混炼温度影响时间,密炼机转速、上顶栓压力也会影响混炼时间,所以在混炼工艺尽量缩短辅助时间和投料时间。
8.冷却水
冷却水温度一般设置15度,低粘度胶料不易用热水冷却,易粘转子,高粘度胶料采热水冷却, 提高冷却水温度可缩短混炼时间,降低能量消耗,提高生产效率。

  • Categories:Industry News
  • Author:
  • Origin:www.hebeiaogesi.cn/
  • Time of issue:2020-10-21
  • Views:0
Information
1. Rotor
The rotor type and the number of ridges, the number of ridges is high, the shearing speed is high, but the heat rise is high, which shortens the mixing time and affects the mixing quality. Affected by the rotor type, the shear-type dispersion zone is between the rotor edge and the mixing chamber. The force range is large and wide, the shearing force is large, the efficiency is high, and the mixing quality is good. In the meshing type, the dispersion zone is between the two rotors, the shearing force is small, the heat generation is low, and the mixing time is long, and the dispersion effect is better.
2. Pressure on the top bolt
The function of the top bolt is to keep the rubber in the mixing working area of ​​the mixing chamber. Insufficient pressure will cause the rubber to slide on the wall of the mixing chamber and the surface of the rotor. Appropriate pressure can reduce the voids in the material and increase the contact force. The high pressure increases the temperature of the rubber compound and the mixing power. If the filling capacity is insufficient, the pressure of the top bolt cannot be fully exerted, and the rubber material is unevenly dispersed.
3. Temperature
Each rubber has its optimum mixing temperature range. The type and amount of raw rubber, reinforcing agent and softening agent determine the temperature rise of the mixing. At the same temperature, the longer the mixing time, the better the dispersion.
4. Filling amount
It depends on the effective volume of the internal mixer itself. The type of raw rubber in the formula, the amount of reinforcing fillers and plasticizers. The raw rubber with greater plasticity should be loaded with a larger amount. The filling factor (weight) is between 0.65 and 0.75, and the necessary shear force cannot be obtained for mixing if the filling amount is insufficient.
5. The order of feeding and the effect of the order are different
Basic selection in the automatic system mixing (using multi-stage mixing, according to the requirements of the rubber material): raw rubber--pumping--adding filler/compounding agent--pressing--pumping--adding softener, pressing--pumping Tuo-pressure Tuo-lift Tuo discharge.
6. Rotation speed
The rotation speed is proportional to the shear rate, and the higher the shear rate, the uniform mixing speeds up. Increasing the speed will increase the temperature of the rubber, resulting in a decrease in the viscosity and shear stress of the rubber.
7. Time
The length of the mixing time is related to the amount of filling and the temperature rise of the formula. The mixing temperature of various rubber materials affects the time, the speed of the mixer and the pressure of the top plug will also affect the mixing time, so the auxiliary mixing process should be shortened as much as possible. Time and feeding time.
8. Cooling water
The cooling water temperature is generally set to 15 degrees. Low-viscosity rubber is not easy to cool with hot water. It is easy to stick to the rotor. High-viscosity rubber is cooled by hot water. Increasing the cooling water temperature can shorten the mixing time, reduce energy consumption and improve production efficiency.

Scan the QR code to read on your phone

Relevant Information

Correct operation method and precautions of open mill
The open mill focuses on use and maintenance. Good operating habits and process protection can greatly increase the life of the machine and reduce the safety factor of the operator when using it. Protecting the safety and health of workers in production is an important policy of our country. Protecting national property and promoting production development are important duties of enterprise management.
See more information 白箭头 黑箭头
The rules before turning on the mill must be followed one by one!
The correct operation of the mill must first adjust the roll pitch and maintain the balance of the roll pitch. If the adjustment of the roller pitch at both ends is different, it will cause the rollers to be unbalanced and easily damage the equipment. This is strictly prohibited. After the work is finished, cut off the power supply and close the water and steam valves.
See more information 白箭头 黑箭头
The working principle of internal mixer
An internal mixer is a machine that is equipped with a pair of rotors with a specific shape and relatively rotating, and intermittently plasticizes and mixes polymer materials in a closed state with adjustable temperature and pressure. The following editor of Xianji.com will introduce the working principle, structure, purpose, operation method and precautions of the internal mixer in detail.
See more information 白箭头 黑箭头
Previous page
1
2
4

Website

Tengyu

Mobile official website

Wuxi Tengyu Environmental Protection Technology Co.,Ltd

Service Hotline: 

Company address:

No. 126, Xinyuan Road, Ehu Town, Xishan District, Wuxi City, Jiangsu Province

All rights reserved:Wuxi Tengyu Environmental Protection Technology Co.,Ltd     苏ICP备2023005789号-1    www.300.cn

All rights reserved:Wuxi Tengyu Environmental Protection Technology Co.,Ltd

苏ICP备2023005789号-1

www.300.cn