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High-initial-adhesion and high-temperature-resistant hot melt adhesive and preparation method thereof

A high-temperature and heat-resistant technology, used in polymer adhesive additives, non-polymer adhesive additives, adhesives, etc., can solve the problems of insufficient substrate wetting, slow coating speed, short opening time, etc. The effect of balanced softening point, high service temperature and good adhesion

Active Publication Date: 2022-07-15
上海都昱新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The prior art (CN202010577559.6) provides a polyurethane hot-melt adhesive product and its preparation method. In this paper, a method of adding thermoplastic resin and tackifying resin in the synthesis process of polyurethane is mainly used to prepare a moisture-curing polyurethane hot-melt adhesive. Melt adhesive, and claims that its hot melt adhesive products have long open time, high initial bond strength, and good resistance to heat and humidity; however, when its polyurethane hot melt adhesive is used for floor processing, the coating speed is slow and it takes a long time constant temperature and pressure, prone to false sticking phenomenon
And, on the other hand, the polyolefin hot-melt adhesives in the prior art also have shortcomings such as poor initial tack and short open time, especially when the low temperature in winter is used, due to poor initial tack and short open time, it will affect the moisturization of the substrate. If the moisture is not enough, it is easy to appear false sticking, debonding and loss of sticking phenomenon

Method used

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  • High-initial-adhesion and high-temperature-resistant hot melt adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Embodiment 1 A first aspect provides a hot melt adhesive, in terms of mass percentage, the raw materials include: 10% of high-viscosity olefin resin, 30% of low-viscosity olefin resin, 25% of hydrogenated C5 petroleum resin, and 25% of hydrogenated DCPD resin , Polyisobutylene 9%, Antioxidant 1%.

[0042] Among them, the melt viscosity of the high-viscosity olefin resin is 45000cps at 190℃; the melt viscosity of the low-viscosity olefin resin is 8000cps at 190℃, and the tensile strength is 5.0MPa; the softening point of the high-viscosity olefin resin is 105℃; The softening point is 132℃, and the tensile strength is 1.5MPa.

[0043] In this example, the high-viscosity olefin resin was purchased from Evonik Chemical's 750 model high-viscosity olefin resin product; the low-viscosity olefin resin was purchased from Evonik's 308 model low-viscosity olefin resin product.

[0044] The softening point of the hydrogenated C5 petroleum resin is 100°C; the hydrogenation rate of ...

Embodiment 2

[0050] The specific implementation of this example is the same as that of Example 1, except that the high-viscosity olefin resin is 30% and the low-viscosity olefin resin is 10%.

Embodiment 3

[0052] The specific implementation of this example is the same as that of Example 1, except that the high-viscosity olefin resin is 25%, the low-viscosity olefin resin is 10%, and 5% of SIS rubber elastomer is also added.

[0053] In this example, the SIS rubber elastomer was purchased from the SIS1126 model product sold by Hunan Yuehua Chemical Industry.

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Abstract

The invention relates to the field of C09J123 / 00 of IPC classification, in particular to a high-initial-adhesion and high-temperature-resistant hot melt adhesive and a preparation method thereof. The invention relates to a hot melt adhesive with high initial viscosity and high temperature resistance. The hot melt adhesive at least comprises the following raw materials: polyolefin resin with melt viscosity of 3000-60000, 190 DEG C and mPa.s, hydrogenated resin with softening point of 80-140 DEG C and a triblock homopolymer. The hot melt adhesive prepared in the invention has excellent initial viscosity, extremely low VOC, good high temperature resistance, impact resistance, aging resistance and plasticizer resistance, is suitable for popularization in the field of hot melt adhesives, and has a wide development prospect.

Description

technical field [0001] The invention relates to the field of C09J123 / 00 classified by IPC, in particular to a high initial viscosity, high temperature resistant hot melt adhesive and a preparation method thereof. Background technique [0002] In recent years, due to the advantages of high adhesion, fast setting, good coating effect and moisture resistance, hot melt adhesive products have been widely used in hygiene care products, woodworking, paper lamination, food box packaging, automotive (Interiors, lights, batteries), filters, carpet laying, road construction, white goods, mattresses and other fields, is a kind of adhesive material that has been widely used and studied in recent years. [0003] Among them, polyolefin hot-melt adhesive is a kind of hot-melt adhesive. The main olefin resin, softener and tackifier resin are mixed and heated into a molten state. Adhesive substrate, and then lamination with another substrate to be bonded can produce obvious bonding effect. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J123/00C09J157/02C09J145/00C09J123/20C09J11/06C09J11/08
CPCC09J123/00C09J157/02C09J145/00C09J11/06C09J11/08C08L2205/025C08L2201/08C08L23/00C08L57/02C08L45/00C08L23/20C08L53/02C08K5/13Y02E10/50
Inventor 肖先锋杨丽燕
Owner 上海都昱新材料科技有限公司
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