Lightweight hot melt adhesive applied to household filter and preparation method thereof

A filter and hot melt adhesive technology, applied in the direction of adhesives, adhesive types, mineral oil hydrocarbon copolymer adhesives, etc., can solve the problems of poor thermal stability, EVA brittleness, difficult foaming, etc. cost effect

Pending Publication Date: 2021-10-01
广州波塞冬材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the hot melt adhesive used in the existing daily bonding and industrial production is difficult to be used as the hot melt adhesive for air filter materials.
[0003] At present, the hot melt adhesive used in air filters is mainly EVA (ethylene vinyl acetate copolymer). The EVE hot melt adhesive mainly has these problems: 1. Poor thermal stability. During heating and use, EVA heat The melt glue will decompose some low molecular substances, which have a certain odor, and eventually seriously affect the quality of the air filter; 2. During the process of thermal decomposition, it also causes serious color changes, which affects the appearance of the air filter; 3. 1. Poor low temperature resistance, severe low temperature will cause EVA to become brittle, or the bond strength will drop rapidly; 4. The bond strength is relatively general, and cannot meet the use requirements in some occasions
The hot-melt adhesive relies on the high crystallinity of the Fischer-Tropsch wax to improve the high temperature resistance of the product, but the addition of the Fischer-Tropsch wax will make the hot-melt adhesive product less brittle, and when the air filter is prepared, it needs to use There are many hot melt adhesives, which cannot reduce the cost of hot melt adhesives
[0005] In the prior art, in order to reduce the cost, nitrogen gas is mainly used for foaming when the hot melt adhesive is used. However, most hot melt adhesives for air filters have low foaming properties, and it is difficult to achieve better foaming. Better reduce the use cost of hot melt adhesive

Method used

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  • Lightweight hot melt adhesive applied to household filter and preparation method thereof
  • Lightweight hot melt adhesive applied to household filter and preparation method thereof
  • Lightweight hot melt adhesive applied to household filter and preparation method thereof

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preparation example Construction

[0036] The embodiment of the present invention also provides a preparation method for light-weight hot melt adhesive applied to household filters, comprising the following steps:

[0037] (1) Put polyethylene wax into the reactor, heat up to 160°C-200°C and stir at a stirring speed of 20-50 revolutions per minute, until it is completely melted and kept at a constant temperature;

[0038] (2) Put in metallocene polyolefin and random polyolefin, dissolve them one by one, stir at 20-50 rpm, until they are completely melted and kept at a constant temperature of 170°C-190°C;

[0039] (3) Add the melted linear polypropylene, the stirring speed is 20-40 rpm, and the constant temperature is 170°C-190°C after stirring evenly;

[0040] (4) Add petroleum resin and antioxidant, reduce the stirring speed by 10-30 rpm, wait until fully stirred evenly, and import the screw extruder to extrude and granulate.

[0041] In a preferred embodiment, in the step (2), the metallocene polyolefin is a...

Embodiment 1-3

[0051] The preparation method of embodiment 1-3 is as follows:

[0052] 1. Reactor preheating;

[0053] 2. Put polyethylene wax into the reaction kettle, heat up to 180 degrees and stir at a stirring speed of 20-50 rpm until it is completely melted and kept at a constant temperature;

[0054] 3. Add metallocene polyolefins and random polyolefins according to the viscosity from low to high, dissolve one by one, stir at 20-50 rpm, until they are all melted and kept at a constant temperature of 180 degrees;

[0055] 4. Add air microspheres in proportion, and import them into the reaction kettle after melting, stirring at 20-40 rpm, and keep the temperature at 180 degrees after stirring evenly. The density of air microspheres is about 0.2g / cm 3 ;

[0056] 5. Add petroleum resin and antioxidant in sequence, and reduce the stirring speed by 10-30 rpm. After being fully stirred evenly, it is introduced into a screw extruder to extrude and granulate.

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Abstract

The invention provides a lightweight hot melt adhesive applied to a household filter and a preparation method thereof. The light-weight hot melt adhesive is prepared from the following components in parts by weight: 3 to 20 parts of high-temperature polyethylene wax, 3 to 20 parts of air micro-beads, 15 to 40 parts of metallocene catalyzed polypropylene, 5 to 25 parts of random polyolefin, 20 to 50 parts of petroleum resin and 0.1 to 3 parts of an antioxidant. According to the light-weight hot melt adhesive for the household filter, the use cost of the hot melt adhesive can be reduced.

Description

technical field [0001] The invention belongs to the technical field of hot-melt adhesives, and in particular relates to a lightweight hot-melt adhesive applied to household filters and a preparation method thereof. Background technique [0002] The role of the air filter is to protect the breathing apparatus used by people. With the increasingly serious environmental pollution and the strengthening of people's environmental awareness, air quality has become the focus of global attention, which has led to the increasing use of air filters. With the continuous improvement of the design of the filter itself, there has been a filter without a partition, and since then hot melt adhesives have been widely used in filters. In the air filter without partition, the filter material is separated by hot melt adhesive instead of the aluminum foil of the filter with partition. The filter without partitions not only eliminates the danger of partitions damaging the filter medium, but also ...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): C09J157/02C09J123/00C09J123/12C09J11/08C09J11/04
CPCC09J157/02C09J11/08C09J11/04C08L2205/035C08K2003/2227C08L23/06C08L23/12C08L23/00C08K3/36C08K3/22
Inventor刘济君
Owner广州波塞冬材料科技有限公司