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Hot melt adhesive special for random copolymerization polypropylene multiunit tube and manufacture method thereof

A technology of random copolymerization and polypropylene, applied in the direction of graft polymer adhesives, applications, adhesives, etc., can solve the problems of high price and long delivery cycle, and achieve low cost, stable comprehensive performance, and simple preparation process Effect

Inactive Publication Date: 2008-08-20
合诚技术股份有限公司
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

At present, hot melt adhesives that can better solve these problems are

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1～5

[0020] First prepare the raw materials according to the formula ratio of table 1, then the functional polymer (the polymer grafted with maleic anhydride contains more than 60% [-CH 2 -CH(CH 3 )-] structure), polypropylene, elastomer and tackifier four resins are mixed evenly in the mixer, and then add antioxidant and nucleating agent to stir and disperse evenly, so that the antioxidant and nucleating agent can be evenly adhered on the resin surface. Then feed it into the twin-screw extruder at a speed of 80r / min, extrude at a speed of 200r / min, cool, pelletize and dry to make the hot melt adhesive for PP-R composite pipe. The peel strength test results of the prepared random copolymer polypropylene composite pipe hot melt adhesive are shown in Table 1.

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Abstract

The invention discloses a random copolymerization polypropylene multiple-unit tube special purpose hot melt rubber, which is prepared by the raw materials with the following parts by weight: 5 to 70 parts of functional polymer, 10 to 70 parts of polypropylene, 2 to 50 parts of elastomer, 5 to 20 parts of tackifying resin, 0.1 to 1.2 parts of antioxidant, and 0.1 to 1 part of nucleating agent. The preparation method is: first, functional polymer, polypropylene, elastomer and tackifying agent are mixed evenly in a mixer; then antioxidant and nucleating agent are added, and the mixture is added into an extruder after mixing the mixture evenly; the random copolymerization polypropylene multiple-unit tube special purpose hot melt rubber is obtained after extruding, granulation and drying. The preparation process of the method is simple, and the prepared random copolymerization polypropylene multiple-unit tube special purpose hot melt rubber is characterized by being low in melting point, good in fluidity, excellent in bond property, etc., and can be used as polypropylene base material and other polar materials or the bond layer of aluminum, steel and other metals.

Description

technical field [0001] The invention belongs to the field of adhesive preparation, and in particular relates to a hot-melt adhesive specially used for composite pipes of polypropylene random copolymer (PP-R for short) and a preparation method thereof. Background technique [0002] Random copolymerized polypropylene composite pipe refers to the popular PP-R / metal / PP-R pipe composite pipe in recent years, such as PP-R aluminum-plastic composite pipe, PP-R steel-plastic composite pipe and PP-R copper-plastic composite pipe At present, the more common ones are the first two. Due to the poor bond strength between the non-polar random copolymer polypropylene and the surface polar metal, a special binder is often used to bond it. Therefore, the PP-R composite pipe is actually a five-layer composite pipe, that is, PP-R—hot melt adhesive—metal—hot melt adhesive—PP-R. This new type of chemical building material has the advantages of excellent mechanical propertie...

Claims

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Application Information

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IPC IPC(8): C09J123/12C09J151/00B29C70/04B29D23/00
Inventor 游华燕匡俊杰李刚蒋文真
Owner 合诚技术股份有限公司
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