Water dispersion type fibre and method for making same

A dispersion type, fiber technology, applied in the field of dispersion liquid formed by fibers in water and its preparation, can solve the problems of easy drift and suspension, uneven mechanical strength, uneven fiber dispersion, etc., to meet the requirements of engineering quality and overall performance. Excellent, long storage effect

Inactive Publication Date: 2008-02-06
SHENZHEN OCEAN POWER INDUSTRIAL CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although polymer fiber reinforced concrete has been widely used in the field of engineering construction, such as in roads, bridges, building retaining walls, embankment reinforcement, etc., how to achieve uniform dispersion of fibers in concrete has always been a problem for people. Difficult, this is because most fibers are non-polar molecules, and water is polar molecules, so it is difficult for fibers to disperse evenly in water
The uneven dispersion of fibers in concrete will not only affect the strength and toughness of concrete, but also cause uneven mechanical strength in different parts of concrete, resulting in a decrease in the overall mechanical properties of concrete. Under certain security risks
At the same time, when the above-mentioned fibers are produced and used, because the fibers are short, they are easy to drift and suspend in the air, and after being inhaled by the human body, they will directly affect the health of the human body, and are pr

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Water-dispersible fiber is made by mixing the following components:

[0015] Component name Content (g)

[0016]

[0017] Polyvinyl alcohol fiber 600

[0018] Water (hardness 0.02~1.50mmol / L) 293

[0019] BYK-130 (dispersant) 1

[0020] NOPCO-8034 (defoamer) 6

[0021] NOPCO N-96 (anti-mold fungicide) 2

[0022] The preparation methods of fiber dispersion: first add dispersant and defoamer to water in sequence, then add fiber filaments, disperse at high speed for 0.5 to 1 hour, then add fungicide, stir for 10 minutes to get the dispersion. After the fiber dispersion is mixed evenly, it is mixed with the pre-mixed concrete for 30 minutes. The properties of the prepared concrete are shown in Table 1 and Table 2.

[0023] Table 1 Concrete long-term performance and durability test report form

[0024] Test items

unit

benchmark concrete

Aramid Fiber Concrete

Remark

frost resistan...

Embodiment 2

[0028] Water-dispersible fiber is made by mixing the following components:

[0029] Component name Content (g)

[0030] Polypropylene fiber 700

[0031] Water (hardness 0.02~1.50mmol / L) 400

[0032] BYK-130 (dispersant) 5

[0033] NOPCO-8034 (defoamer) 1

[0034] NOPCO N-96 (anti-mold fungicide) 4

[0035] The preparation method is the same as in Example 1. After the fiber dispersion is mixed evenly, it is mixed with the pre-mixed concrete for 30 minutes. The properties of the prepared concrete are shown in Table 3 and Table 4.

[0036] Table 3 Concrete long-term performance and durability test report form

[0037] Test items

[0038] Table 4 Test report on physical and mechanical properties of concrete

[0039] Test items

[0040] 0.7

Embodiment 3

[0042] Water-dispersible fibers, including the following components:

[0043] Component name Content (g)

[0044] Polyacrylonitrile fiber 800

[0045] Water (hardness 0.02~1.50mmol / L) 200

[0046] BYK-130 (dispersant) 3

[0047] NOPCO-8034 (defoamer) 3

[0048] NOPCO N-96 (anti-mold fungicide) 1

[0049] The preparation method is the same as in Example 1. After the fiber dispersion is mixed evenly, it is mixed with the pre-mixed concrete for 30 minutes. The properties of the prepared concrete are shown in Table 5 and Table 6.

[0050] Table 5 Concrete long-term performance and durability test report form

[0051] Test items

unit

benchmark concrete

polyacrylonitrile fiber concrete

Remark

frost resistance

％

Strength Loss Rate

weight loss rate

8.5

0.33

0

0

According to GBJ85-85 regulations

Fan Carry-Slow Exercise

Law

D50

％

individual asses...

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PUM

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Abstract

The invention discloses a moisture dispersible fibre which comprises the following components by weight: fibre, 60-80 portions; water with the hardness of 0.02-1.50mmol/L, 20-40 portions; dispersing agent, 0.1-0.5 portions; antifoaming agent, 0.1-0.6 portions; and mouldproof bactericides, 0.1-0.4 portions. With the invention, uniform dispersion of the fibre in the concrete can be realized without lowering and damage of various performances of the fibre, and the overall performance of the concrete is excellent, thereby engineering quality requirements can be met; fibre dispersion has high security and long storage time, and can not only be mixed and used in field but also be mixed and stored for further use; simultaneously the fibre dispersion is safe to use with no influence on the health of workers, the addition is accurate and the dosing of concrete water mixed is saved.

Description

【Technical field】 [0001] The invention relates to a water-dispersed fiber, in particular to a dispersion liquid formed in water of the fiber used for concrete reinforcement and a preparation method thereof. 【Background technique】 [0002] Concrete is the most widely used and used building material in contemporary times. However, its low tensile strength, easy cracking, high brittleness, poor deformation performance is not conducive to earthquake resistance, and its own weight limits its application range and affects the quality of projects. Therefore, light weight, high strength, and improved brittleness have always been the development direction of concrete. The use of fiber reinforcement is an important way to modify concrete. The incorporation of fiber materials can greatly improve the tensile strength, crack resistance, fatigue resistance, fracture toughness and deformation properties of concrete. In the past 20 years, fiber concrete has developed rapidly. The fibers co...

Claims

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Application Information

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IPC IPC(8): C04B16/06
CPCC04B40/0039
Inventor 赵欣平何唯平
Owner SHENZHEN OCEAN POWER INDUSTRIAL CO LTD
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