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Method for preparing gel adhesives for PP brush wires

A kind of adhesive and gel-like technology, applied in the direction of adhesives, etc., can solve the problems of restricting the high elasticity of brush filaments, not being able to adapt to the requirements of cold area operations, adhesive toughness, strength reduction, etc., to achieve good resistance to environmental stress Crackability, high rigidity, and excellent rigidity

Active Publication Date: 2014-05-14
安徽环美刷业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing brush filament adhesive mainly has the following disadvantages: 1. Poor viscosity, the brush filament is not bonded tightly, and the vibration generated by high-frequency and high-intensity operations can easily cause the brush filament to fall off, which greatly reduces the life of the brush body
2. The toughness is poor, which limits the high elastic operation requirements of the brush wire, and further affects the cleaning effect
3. The brush filaments bonded by the existing adhesive cannot better fasten the brush filaments after the brush handle is tightened and compacted, and the filaments are easy to fall off during use
4. Existing adhesives cannot adapt to the requirements of cold area operations, and the toughness and strength of the adhesive will decrease at low temperature, which will greatly reduce the product performance
5. The best time for the existing gel-like adhesive to be bonded after being extruded through the die is short

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] At room temperature of 16°C, put 35kg of polypropylene wire drawing powder, 25kg of linear low density polyethylene, 25kg of linear low density polyethylene primary recycled material, and 15kg of chlorinated polypropylene into a high-speed mixer with a rotation speed of 100rpm. , mixed for 5 minutes, and then added to a twin-screw extruder. The temperature of each zone of the extruder is: 175°C in the first zone, 185°C in the second zone, 190°C in the third zone, and 195°C in the die head, and melt to obtain a gel-like adhesive.

Embodiment 2

[0021] At a room temperature of 45°C, put 50kg of polypropylene wire drawing powder, 20kg of linear low density polyethylene, 20kg of linear low density polyethylene primary recycled material, and 10kg of chlorinated polypropylene into a high-speed mixer with a rotation speed of 100rpm. , mixed for 5 minutes, and then added to a twin-screw extruder. The temperature of each zone of the extruder is: 175°C in the first zone, 185°C in the second zone, 190°C in the third zone, and 195°C in the die head, and melt to obtain a gel-like adhesive.

Embodiment 3

[0023] At a room temperature of 30°C, put 42kg of polypropylene wire drawing powder, 23kg of linear low density polyethylene, 22kg of linear low density polyethylene primary recycled material, and 13kg of chlorinated polypropylene into a high-speed mixer with a rotation speed of 100rpm. , mixed for 5 minutes, and then added to a twin-screw extruder. The temperature of each zone of the extruder is: 175°C in the first zone, 185°C in the second zone, 190°C in the third zone, and 195°C in the die head, and melt to obtain a gel-like adhesive.

[0024] For the gel-like adhesives prepared in the above three examples, the optimal bonding time after exiting the die head is extended to 3 minutes, and the brush filaments bonded during this period of time do not crack or break after reprocessing, while ordinary bonding The agent can only implement optimal bonding within 1.5 minutes after extrusion. The PP brush filaments are baked at 120°C before bonding, and the gel-like adhesive is bond...

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Abstract

The invention discloses a method for preparing gel adhesives for PP brush wires. The gel adhesives are composed of the raw materials, by weight, 35-50 parts of polypropylene wiredrawing powder, 20-25 parts of linear low density polyethylene, 20-25 parts of linear low density polyethylene first-class reworked materials and 10-15 chlorinated polypropylene. The method comprises the steps that the polypropylene wiredrawing powder, the linear low density polyethylene, the linear low density polyethylene first-class reworked materials and the chlorinated polypropylene are put into a high-speed mixing machine with the rotating speed of 100 rpm, are mixed for five minutes, and then are added to a double-screw extruder, the temperature of a first area is 175 DEG C, the temperature of a second area is 185 DEG C, the temperature of a third area is 190 DEG C, the temperature of a die head is 195 DEG C, and the gel adhesives are obtained through fusion. The gel adhesives are good in tenacity and weather fastness.

Description

technical field [0001] The invention relates to a plastic adhesive, in particular to a method for preparing a gel-like adhesive used for PP brush filaments. Background technique [0002] Due to the harsh working environment of snow brushes, the adhesive glue for brush filaments must not only have good physical properties but also have the function of preventing vibration and dislocation. In addition, its anti-corrosion and weather resistance should also meet the corresponding requirements; the above-mentioned performance is directly related to the brush. body life. The existing brush filament adhesive mainly has the following disadvantages: 1. Poor viscosity, the brush filament is not tightly bonded, and the vibration generated by high-frequency and high-intensity operations is likely to cause the brush filament to fall off, which greatly reduces the life of the brush body. 2. The toughness is poor, which limits the high elastic operation requirements of the brush wire, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J123/12C09J123/08C09J123/28B29C47/92B29C48/92
CPCB29C48/40B29C48/875B29C48/92B29C2948/92704B29C2948/92895
Inventor 徐焰苗
Owner 安徽环美刷业股份有限公司
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