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Hot melt adhesive, preparation method and application of hot melt adhesive, and heat shrinkable sleeve

A technology of hot melt adhesive and melt index, which is applied in the direction of adhesives, heat-activated films/sheets, adhesive types, etc., can solve the problems of narrow application range, low temperature resistance, poor bonding performance of hot melt adhesives, etc., and achieve operation Simple, low cost and stable performance

Inactive Publication Date: 2018-04-10
NITTO QINGDAO TECH RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] One of the purposes of the present invention is to provide a hot-melt adhesive. The hot-melt adhesive obtained through the mutual cooperation of asphalt mastic, thermoplastic resin, tackifying resin and other components has excellent bonding performance, High and low temperature performance, sealing performance and anti-corrosion effect, alleviating the problems of poor bonding performance, narrow application range and low temperature resistance of existing hot melt adhesives

Method used

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  • Hot melt adhesive, preparation method and application of hot melt adhesive, and heat shrinkable sleeve
  • Hot melt adhesive, preparation method and application of hot melt adhesive, and heat shrinkable sleeve

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0170] According to a second aspect of the present invention, a kind of preparation method of hot melt adhesive is provided, comprising the following steps:

[0171] Measure asphalt mastic, thermoplastic resin, tackifying resin, optional antioxidant and optional filler according to the formula, heat and knead, cool and shape to obtain the product.

[0172] According to the formula, take the finished product of asphalt horseshoe grease or the raw materials of the asphalt horseshoe grease, mix with thermoplastic resin, tackifying resin, optional antioxidant and filler, and then shape it.

[0173] Mixing can be completed in one step, or different components can be added in sequence to carry out mixing step by step, for example: after mixing other components except tackifying resin for a certain period of time, add tackifying resin and mix to the greatest extent. Activates the tack of the hot melt adhesive.

[0174] The preparation method of the hot melt adhesive of the present i...

Embodiment 1-3

[0194] The formula of embodiment 1-3 is as table 1, and preparation method is identical, is:

[0195] According to the formula, take the raw materials of S glue (asphalt mastic), mix with thermoplastic resin (PE, EVA(I), EVA(II)), tackifying resin (phenolic resin (I)), and mix at 140°C for 8 minutes Left and right, the stirring speed is 60rpm, cooling, forming, and the hot melt adhesive of Example 1-3 is obtained.

[0196] Table 1

[0197] The weight percentage of each ingredient, %

Example 1

Example 2

Example 3

S glue

40

59

50

PE

12

10

10

EVA(I)

30

20

0

EVA(II)

0

0

30

Phenolic resin (I)

18

11

10

[0198] Composite the hot-melt adhesive obtained in Examples 1-3 with a substrate (for example, PE, cross-linked PE, etc.) to obtain a heat-shrinkable sleeve and / or a heat-shrinkable tape.

[0199] The performance of embodiment 1-3 hot-melt adhesive (the adhesive layer performa...

Embodiment 4-6

[0206] The formula of embodiment 4-6 is as table 3, and preparation method is identical, is:

[0207] According to the formula, take the raw materials of S glue, and thermoplastic resin (PE, EVA (I)), tackifying resin (phenolic resin (I), phenolic resin (II)), filler (carbon black, calcium carbonate), at 140 ℃ mixing for about 8 minutes, the stirring speed is 60rpm, cooling and molding, and the hot melt adhesive of Example 4-6 is obtained.

[0208] table 3

[0209]

[0210]

[0211] The heat-shrinkable sleeve and / or heat-shrinkable tape of the present invention can be obtained by compounding the hot-melt adhesive obtained in Examples 4-6 with a substrate (for example, PE, cross-linked PE, etc.).

[0212] The test result (test method is the same as embodiment 1-3) of embodiment 4-6 is shown in table 4.

[0213] Table 4

[0214] Performance

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Abstract

The invention discloses a hot melt adhesive, a preparation method and an application of the hot melt adhesive, and a heat shrinkable sleeve. The hot melt adhesive is prepared from the following main components in percentages by weight: 30 to 80% of asphalt mastic, 15 to 50% of thermoplastic resin, 5 to 40% of thickening resin, 0 to 5% of an antioxidant and 0 to 20% of a filling material. The preparation method for the hot melt adhesive comprises the following steps: weighing of raw materials in a formula proportion, mixing under heating, cooling and molding. The invention alleviates problems like poor binding properties, narrow application range and no resistance to low temperature for a conventional hot melt adhesive. The hot melt adhesive provided by the invention has excellent binding properties and high peel strength to PE, steel and epoxy primer; meanwhile, the preparation method for the hot melt adhesive provided by the invention has the advantages of convenience in operation andcontrol, low energy consumption, low cost, easy implementation of large-scale production, and facilitation of further promotion of industrial development.

Description

technical field [0001] The invention relates to the technical field of adhesives, in particular to a hot-melt adhesive, a preparation method and application thereof, and a heat-shrinkable sleeve. Background technique [0002] As a medium transmission carrier and an important facility of ground engineering, buried pipelines are the link connecting upstream and downstream customers and play an important role in economic development. However, with the passage of time, external soil characteristics and topographical settlement and other factors, pipelines buried underground for a long time may be damaged by corrosion, perforation, leakage, etc., which may cause huge economic losses and irreparable environmental damage. Therefore, the safety of large and medium-sized long-distance pipelines and urban pipeline networks used by residents is increasingly concerned by the government and scientific researchers. Sealing and anti-corrosion high-performance materials for steel pipelines ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J123/22C09J123/20C09J195/00C09J193/04C09J145/00C09J123/06C09J123/08C09J11/08C09J11/04C09J11/06C09J7/35
CPCC08K2003/265C08L2205/025C08L2205/035C08L2207/24C09J11/04C09J11/06C09J11/08C09J123/0853C09J123/22C09J195/00C09J2423/00C08L23/22C08L95/00C08L93/04C08L23/06C08L61/06C08K3/04C08L23/0853C08K5/1345C08L61/14C08K3/26C08L45/00
Inventor 杨旭东金玲郭丽云
Owner NITTO QINGDAO TECH RES INST CO LTD
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