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One-component moisture-curing polyolefin hot-melt adhesive and preparation method thereof

A moisture-curing, one-component technology, used in adhesives, mineral oil-hydrocarbon copolymer adhesives, adhesive types, etc., which can solve the requirements of high temperature resistance, lack of reactive groups, and poor high temperature resistance. and other problems, to achieve the effect of high bonding strength, high bonding strength and excellent final bond strength

Active Publication Date: 2018-10-02
重庆中科力泰高分子材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, polyolefin hot melt adhesives lack reactive groups during the curing process of the adhesive layer, so that after the hot melt adhesive is cooled and solidified, its high temperature resistance is poor, and it cannot meet the high temperature resistance requirements of many occasions.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) Accurately weigh the following mass ratio raw materials

[0023] SIS resin 25%;

[0024] Hydrogenated petroleum resin 32%;

[0025] APAO resin 40%;

[0026] Initiator 0.8%;

[0027] Coupling agent 1.6%;

[0028] Antioxidant 0.8%;

[0029] (2) Heat and stir the above-mentioned SIS resin, hydrogenated petroleum resin and plasticizer to melt completely, and cool to 70-80℃; add coupling agent, mix and stir at 80-90℃ for 20 minutes, then add initiator, 80℃-100℃ Stir and react for 3 hours; add APAO resin and antioxidants, and stir at 150-170°C for 40 minutes; transfer the resulting mixture to an aluminum foil packaging bag and seal to obtain a one-component moisture-curing polyolefin hot melt adhesive. Nitrogen protection throughout the reaction.

Embodiment 2

[0031] (1) Accurately weigh the following mass ratio raw materials

[0032] SIS resin 25%;

[0033] Hydrogenated petroleum resin 40%;

[0034] APAO resin 25%;

[0035] Plasticizer: 5.8%;

[0036] Initiator 0.8%;

[0037] Coupling agent 1.6%;

[0038] Antioxidant 0.8%;

[0039] (2) Heat and stir the above-mentioned SIS resin, hydrogenated petroleum resin and plasticizer to melt completely, and cool to 70-80℃; add coupling agent, mix and stir at 80-90℃ for 20 minutes, then add initiator, 80℃-100℃ Stir and react for 3 hours; add APAO resin and antioxidants, and stir at 150-170°C for 40 minutes; transfer the resulting mixture to an aluminum foil packaging bag and seal to obtain a one-component moisture-curing polyolefin hot melt adhesive. Nitrogen protection throughout the reaction.

Embodiment 3

[0041] (1) Accurately weigh the following mass ratio raw materials

[0042] SIS resin 25%;

[0043] Hydrogenated petroleum resin 37%;

[0044] APAO resin 32.5%;

[0045] Plasticizer: 2.3%;

[0046] Initiator 0.8%;

[0047] Coupling agent 1.6%;

[0048] Antioxidant 0.8%;

[0049] (2) Heat and stir the above-mentioned SIS resin, hydrogenated petroleum resin and plasticizer to melt completely, and cool to 70-80℃; add coupling agent, mix and stir at 80-90℃ for 20 minutes, then add initiator, 80℃-100℃ Stir and react for 3 hours; add APAO resin and antioxidants, and stir at 150-170°C for 40 minutes; transfer the resulting mixture to an aluminum foil packaging bag and seal to obtain a one-component moisture-curing polyolefin hot melt adhesive. Nitrogen protection throughout the reaction.

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Abstract

The invention belongs to the technical field of polyolefin hot-melt adhesives, and particularly relates to a mono-component moisture-curing polyolefin hot melt adhesive. The hot-melt adhesive is formed from, by mass, 25% of a styrene-isoprene-styrene block copolymer, 25-40% of an alpha-amorphous olefin copolymer, 32-41% of hydrogenated petroleum resin, 0-5.8% of a plasticizer, 0.8% of an initiator, 1.6% of a coupling agent and 0.8% of an antioxidant. Beneficial effects of the hot-melt adhesive are that (1) construction is convenient, initial adhesion is good and the hot-melt adhesive is suitable for rapid streamline production, (2) adhesive strength is high, final adhesive strength is excellent and the hot-melt adhesive still has high adhesive strength at a high temperature that is 90 DEG C, and (3) the hot-melt adhesive is suitable for adhering low-polarity materials.

Description

Technical field [0001] The invention belongs to the field of hot melt adhesives, and specifically relates to a single-component moisture-curing polyolefin hot melt adhesive and a preparation method thereof. Background technique [0002] Hot melt adhesive has the advantages of easy use, high initial bonding strength, and adaptability to rapid industrial assembly line operation. Polyolefin hot-melt adhesive is a low-polarity adhesive, which has good effects on PP and PE materials. Reactive polyolefin hot melt adhesives, due to the formation of chemical bonds, can greatly enhance the final adhesive strength to low-polar materials, and have high bonding strength under high temperature conditions, which overcomes the shortcomings of polyolefin hot melt adhesives that are not resistant to high temperatures. As PE and PP materials are widely used in various occasions, the status of low-polarity polyolefin hot melt adhesives becomes more and more important. [0003] At present, polyolefi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J123/00C09J157/02C09J153/02
CPCC08L2201/08C08L2205/035C09J123/00C09J157/02C08L57/02C08L53/02C08L23/00
Inventor 刘志林李有刚冯丽沈巧陈斌杨芳谭雪梅
Owner 重庆中科力泰高分子材料有限公司
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