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Continuous production device and method for silane modified sealing material

A technology for silane modification and sealing materials, which is applied in chemical instruments and methods, mixers with rotary stirring devices, transportation and packaging, etc. To achieve the effect of realizing continuous production, increasing the temperature of dehydration, and facilitating continuous production

Inactive Publication Date: 2019-09-27
GUANGZHOU BAIYUN CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, most of the silane-modified sealing materials are produced by intermittent planetary machines or reactors. The production efficiency is low, the energy consumption is high, and the quality of different batches fluctuates greatly. Moreover, the silane-modified polymers are highly hydrophilic. The sealing material produced by it is very sensitive to water vapor, and the moisture in the system needs to be removed during production, which makes it difficult to realize the continuous production of alkane-modified sealing materials, so it is necessary to solve the problem of moisture removal in the production process
[0004] The traditional continuous production process of sealant usually adopts heating instantaneous vacuum dehydration method, but it is not suitable for the production of silane modified sealant, mainly because the heat resistance of silane modified polymer is poor, and the temperature is higher than 110 ℃. Decomposition occurs, and lower temperature will cause incomplete water removal, affecting its storage stability
CN 102827568A discloses a continuous automatic production process of one-component silane-modified polyether sealant, which produces silane-modified polyether sealant by adopting base material production, static mixing automatic compounding and packaging methods, but the The heating vacuum dehydration method is adopted in the production process of the base material, and the heat resistance of the silane-modified polymer is poor, and the selection of its temperature will cause the decomposition of the silane-modified polyether compound and affect the quality of the product
In addition, the degree of continuity in the production process is low, the adjustment space of the production process is small, and it cannot adapt to the variability of material formulations

Method used

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  • Continuous production device and method for silane modified sealing material
  • Continuous production device and method for silane modified sealing material

Examples

Experimental program
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Embodiment 1

[0082] This embodiment provides a continuous production device for silane-modified sealing materials, and the structural schematic diagram of the continuous production device is as follows figure 1 As shown, it includes a twin-screw extruder unit, a cooling unit 4 and a static mixing unit 6;

[0083] The twin-screw extruder unit includes two twin-screw extruders in series, the cooling unit 4 is arranged between the first-stage twin-screw extruder 3 and the second-stage twin-screw extruder 5, and the second-stage twin-screw extruder 5 The outlet of the screw extruder 5 is connected to a static mixing unit 6 .

[0084] The device also includes a premixing unit, the outlet of the premixing unit is connected to the inlet of the first-stage twin-screw extruder 3, and the premixing unit includes two premixing tanks arranged in parallel, respectively the first premixing Still 1 and the second premixing still 2, all are equipped with stirring device in the said premixing still, descr...

Embodiment 2

[0088] This embodiment provides a continuous production device for silane modified sealing material, the continuous production device includes a twin-screw extruder unit, a cooling unit 4 and a static mixing unit 6;

[0089] The twin-screw extruder unit includes three twin-screw extruders connected in series, and the cooling unit 4 is arranged between the second-stage twin-screw extruder and the third-stage twin-screw extruder, and the third-stage twin-screw extruder The outlet of the machine is connected with the static mixing unit 6.

[0090] The device also includes a premixing unit, the outlet of the premixing unit is connected to the inlet of the first-stage twin-screw extruder 3, and the premixing unit includes two premixing tanks arranged in parallel, respectively the first premixing Still 1 and the second premixing still 2, all are equipped with stirring device in the said premixing still, described the first premixing still 1 and the second premixing still 2 and on th...

Embodiment 3

[0095] This embodiment provides a continuous production method for silane-modified sealing materials, wherein the components and parts by weight of silane-modified sealing materials are: 50 parts of MS polymer S203H, 50 parts of S303H; 2 parts of heat stabilizer IRGANOX 245; 60 parts of plasticizer PPG3000; 100 parts of filler nano-calcium carbonate, 50 parts of heavy calcium carbonate; 2 parts of polyamide wax as thixotropic agent; 1 part of UV-326; 2 parts of coupling agent N-aminoethyl-γ-aminopropyltrimethoxysilane; 2 parts of catalyst dibutyltin diacetylacetonate;

[0096] The method is carried out using the device in Example 1, comprising the following steps:

[0097] (1) 50 parts of MS polymer S203H, 50 parts of S303H and 2 parts of IRGANOX 245 are mixed in the premixing tank and then added to the first-stage twin-screw extruder 3, and the mixed raw materials are fed from the first-stage twin-screw extruder 3 An entry of the join;

[0098] (2) Nano-calcium carbonate an...

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Abstract

The invention provides a continuous production device and a method for a silane modified sealing material, the device comprises a twin-screw extruder unit, a cooling unit and a static mixing unit, wherein the twin-screw extruder unit comprises at least two twin-screw extruders connected in series, each twin-screw extruder is provided with at least two inlets and at least one vacuum port; the cooling unit is arranged between the last two stages of twin-screw extruders, the outlet of the last stage twin-screw extruder is connected with the static mixing unit. Through the arrangement of each unit of the device and the position relationship, different components can be mixed or added in stages to adapt to the characteristics of different components, and the dehydration temperature can be improved by adding a heat stabilizer and a polymer raw material together; the thermal decomposition of the polymer can be avoided; and through the combined action with a water removal agent, the moisture in the system is more easily removed; and the device has a large elastic operation space and can adapt to the variability requirement of the formulation of the silane modified sealing material.

Description

technical field [0001] The invention belongs to the technical field of sealing material production, and relates to a continuous production device and method for a silane-modified sealing material. Background technique [0002] As a commonly used material in production and life, sealing materials can be divided into different categories according to different components. Currently, the sealing materials on the market mainly include polyether sealing materials, polyurethane sealing materials and silicone sealing materials. Among them, silane modified As a new generation of sealing materials, permanent sealing materials are mainly prepared from silane-terminated polyether or polyurethane as the base polymer. Because of their advantages of environmental protection, excellent adhesion and aging resistance, they are widely used in construction, Home decoration, automobiles, ships, and electronic devices, etc., and because of the flexible and changeable formula combination during p...

Claims

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Application Information

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IPC IPC(8): B29C48/375B29C48/285B29C48/25C08L71/02C08L75/04C08L71/00C08L77/00C08K13/02C08K3/26C08K5/5425C08K5/544C08K3/36
CPCB29C48/14B29C48/285B29C48/375C08L71/02C08L75/04C08L2205/035C08L2205/025C08K2003/265C08L71/00C08L77/00C08K13/02C08K3/26C08K5/5425C08K5/544C08L101/00C08K3/36C08G18/48C08G2190/00C08G18/718C08G18/61B29B7/7461B29B7/86B29B7/325B29B7/487B29B7/826B29B7/90B29B7/726B29B7/823C08L75/08B01F23/57B01F27/421B01F2035/98B01F2101/2805B01F23/802B01F33/811B01F35/92B01F23/53B01F23/511B01F2215/0468B01F2215/0472B01F2215/0477
Inventor 龙飞蒋金博胡学庆陈文浩施小华黄恒超张俊兵林键津李向楠余旭陈建军
Owner GUANGZHOU BAIYUN CHEM IND
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