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Non-asbestos composite reinforcing fiber for sealing material and technique for producing the same

A technology of composite reinforcement and sealing materials, applied in other chemical processes, chemical instruments and methods, etc., can solve the problems of weak tensile strength, poor mixing, poor dispersion, etc., and achieve high impact strength, simple process, The effect of high tortuosity

Inactive Publication Date: 2009-04-22
韩德忠
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Asbestos has a certain history as a reinforcing fiber for sealing materials. Although there are many substitute fibers for asbestos, there are still some problems to be solved: easy to agglomerate, weak tensile strength, poor dispersion, poor mixing, high price, etc.

Method used

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  • Non-asbestos composite reinforcing fiber for sealing material and technique for producing the same
  • Non-asbestos composite reinforcing fiber for sealing material and technique for producing the same
  • Non-asbestos composite reinforcing fiber for sealing material and technique for producing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Raw mineral rock wool or granular wool can be purchased or prepared from the market. The preparation process:

[0028] 200kg of basalt, 600kg of diabase, 110kg of limestone, 80kg of dolomite, and 20kg of metallurgical coke are selected as the main materials, which are spun through a high-temperature furnace over 1000°C and subjected to surface treatment. The fibers produced by high-temperature melting are cut to a length of 10-20mm, and then washed with water and slag removed by a centrifuge to control the content of fiber slag balls at 0.5%-1%, and then made into main fibers.

[0029] The preparation process is as figure 1 Shown, take 800kg of the prepared main fiber, 200kg of selected plant fiber and wood fiber, and cut the wood fiber to 8-15mm in advance, mix the raw materials evenly in a high-speed mixer at 2000-2500 rpm, form a mixed fiber, and enter the drum type Carry out mixing and drying in the drying machine, spray 30kg of silica gel coupling agent, 50kg of n...

Embodiment 2

[0031] The main fiber preparation method used is the same as in Example 1. Get 600kg of main fiber and 300kg of wood fiber. The wood fiber is pre-cut to 8-15mm, and it is mixed evenly in a high-speed mixer at 2000-2500 rpm to form a mixed fiber. Mix and dry in the dryer, spray 20kg of silane coupling agent and 30kg of nitrile rubber powder into the process of mixing and drying, dry at 110°C, and dry for 2 hours to obtain the composite reinforced fiber of the present invention. The obtained fibers are then cut to the required specifications, and the obtained fibers should be packaged waterproofly.

Embodiment 3

[0033] Commercially available mineral rock wool or granular cotton is cut according to specifications, then washed with water and slag removed by a centrifuge, and the content of fiber slag balls is controlled at 0.5%-1% to obtain the main fiber.

[0034] Take 800kg of the main fiber and 250kg of wood fiber. The wood fiber is pre-cut to 8-15mm, and it is mixed evenly in a high-speed mixer at 2000-2500 rpm to form a mixed fiber, which is mixed and dried in a drum dryer. In the process of mixing and drying, 40kg of silane coupling agent and 40kg of nitrile rubber powder are sprayed, the drying temperature is 140°C, and the drying time is 1.2 hours to obtain the composite reinforced fiber of the present invention, and the prepared fiber is cut to the desired size. Specifications are required, and the obtained fibers should be packed in waterproof packaging.

[0035] The impact strength of the sealing material using the above-mentioned composite reinforced fiber is greater than 3....

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Abstract

The invention provides a novel low-cost asbestos-free composite reinforced fiber for a sealing material and a production technology. The fiber is environment-friendly and degradable, has no pollution, and can increase shock resisting strength and tensile resisting strength of the sealing material. The production technology is simple, has low production cost, and is suitable for batch production of the sealing material. The asbestos-free composite reinforced fiber for the sealing material comprises the following raw materials in weight portion: 50 to 90 portions of rock wool or granulated wool, 15 to 30 portions of wood fiber, 2 to 5 portions of coupling agent, and 3 to 5 portions of compatilizer. The preparation technology comprises the following steps: firstly, taking the raw materials in the weight portion; secondly, cutting the rock wool or the granulated wool; thirdly, washing the raw materials by using water through a centrifugal machine to remove dregs and obtain main fiber, and controlling the content of dreg balls at between 0.5 and 1 percent; and fourthly, adding the wood fiber into the main fiber, mixing the mixture at high speed, drying the mixture after the mixing, spraying the coupling agent and the compatilizer in the drying process, and finally obtaining the composite reinforced fiber, wherein the drying temperature is between 105 and 150 DEG C, and the drying time is between 1 and 2 hours.

Description

technical field [0001] The invention relates to a non-asbestos composite fiber, in particular to a low-cost non-asbestos composite reinforcing fiber for sealing materials and its production process. Background technique [0002] Reinforcing fiber is an important component of sealing materials and is the main load-bearing unit, acting as a skeleton, so that the material has a certain strength and toughness, and can withstand mechanical effects such as impact, shearing, stretching, etc. without cracks, fractures, collapses, etc. Mechanical damage has an important impact on the service life of sealing materials. The reinforcing fiber should meet the following performance requirements: sufficient strength and modulus and good toughness; high tensile strength and impact strength within a certain temperature range; high thermal decomposition temperature, within a certain temperature range No thermal decomposition, dehydration, phase change, etc. and high pyrolysis residual carbon...

Claims

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Application Information

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IPC IPC(8): C09K3/10C08L101/00C08K9/04C08J5/06
Inventor 韩德忠
Owner 韩德忠
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