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Preparation method and application of toughened and stiffened modified polypropylene resin

A polypropylene resin and modification technology, applied in the field of toughening and stiffening modified polypropylene resin preparation, can solve problems such as stiffness reduction

Inactive Publication Date: 2020-06-05
FOSHAN SUXING MASTERBATCH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When only the toughening is considered, the resulting polypropylene film or sheet, although the toughness increases, becomes soft and the stiffness decreases; when only the rigidity is considered, the resulting polypropylene film or sheet becomes brittle

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0021] The invention provides a method for preparing toughened and stiffened modified polypropylene resin, which comprises the following components by weight percentage:

[0022] Polypropylene resin 60-90%;

[0023] Hydrogenated petroleum resin 5-20%;

[0024] Thermoplastic elastomer 5-20%;

[0025] The bromine value of the hydrogenated petroleum resin is ≤ 3g / 100g, and the C in the bromine value ≤ 3g / 100g is further selected. 5 、C 9 Or one of dicyclopentadiene hydrogenated petroleum resins.

[0026] The polypropylene resin is one of film grade or sheet grade polypropylene resin.

[0027] The thermoplastic elastomer is one of polyolefin thermoplastic elastomers, polyolefin plastomers, and styrene thermoplastic elastomers.

[0028] Its preparation method comprises the following steps:

[0029] 1) According to the parts by weight of the components of the toughened and stiffened modified polypropylene resin, the polypropylene resin, the hydrogenated petroleum resin, and the...

Embodiment 1

[0033] Embodiment 1, 90% by weight of the melt index produced by Sinopec is 8.5g / 10min, the brand is CP80M film grade polypropylene resin, 5% by weight of the melt index produced by Du PONT-Dow Elastomers is 3.0g / 10min , the trade mark is the metallocene polyolefin elastomer of Engage8452 and the bromine value 1g / 100g that Eastman Company produces by 5% by weight, and the trade mark is the hydrogenated petroleum resin of C-115W, according to the above-mentioned preparation method, joins twin-screw extruder , fully mixed, melt-blended and extruded, pelletized and dried to obtain a modified polypropylene resin with a melt index of 9.2 g / 10 min.

[0034] The modified polypropylene resin obtained above was put into a polypropylene cast film production line for a film-making experiment, and a polypropylene resin film with a thickness of 35 μm was produced. After testing, the elongation at break of the obtained polypropylene resin film is 380% in the longitudinal direction and 470% ...

Embodiment 2

[0035] Embodiment 2, 70% by weight of the melt index produced by Sinopec is 2g / 10min, the brand is the BOPP film grade polypropylene resin of F280M, 15% by weight is the SEBS elastomer of the brand of G1641 produced by Kraton Company and the weight part The bromine value produced by Idemitsu Company of Japan is 15% and the bromine value is 1g / 100g. The grade is P-140 hydrogenated petroleum resin. According to the above preparation method, it is added into the twin-screw extruder, fully stirred, and melted and blended for extrusion. Pelletize and dry to obtain a modified polypropylene resin with a melt index of 5.2 g / 10 min.

[0036] The modified polypropylene resin obtained above is put into the biaxially stretched polypropylene film production line, and the production thickness is 48 μm polypropylene resin film. The ratio of longitudinal stretching is 5.3, and the ratio of horizontal stretching is 8.0. The elongation at break of the obtained film is The rate is 283% in the lo...

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Abstract

The invention provides a preparation method and application of toughened and stiffened modified polypropylene resin. The resin comprises the following components in percentage by weight: 60-90% of polypropylene resin, 5-20% of hydrogenated petroleum resin and 5-20% of thermoplastic elastomer; wherein the polypropylene resin is one of film-grade polypropylene resin and sheet-grade polypropylene resin, the bromine value of the hydrogenated petroleum resin is less than or equal to 3g / 100g, and the thermoplastic elastomer is one of a polyolefin thermoplastic elastomer, a polyolefin plastic body and a styrene thermoplastic elastomer. Solved are the problems that when only toughening is enhanced, the obtained polypropylene film or sheet becomes soft, and the stiffness is reduced although the toughness is increased; and when only rigidity is improved, the obtained polypropylene film or sheet becomes brittle. The preparation method can enhance the toughness and rigidity at the same time.

Description

technical field [0001] The invention belongs to the field of composite materials, and in particular relates to a preparation method and application of a toughened and stiffened modified polypropylene resin. Background technique [0002] Polypropylene film has the advantages of light weight, non-toxic, odorless, moisture-proof, high mechanical strength, good heat resistance, good printing performance, good transparency, etc. It is currently the most widely used printing film, widely used in food, clothing and Pharmaceutical packaging, etc. The disadvantage is that the toughness is slightly poor, especially at low temperature, it is easy to be brittle; in addition, the stiffness of polypropylene film is not as good as that of polyester film. In some label applications, such as luggage tags that need to be perforated and product hang tags, the requirements for the base material, in addition to good printing performance, also require good stiffness and toughness of the film bas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L57/02C08L23/00C08L53/02C08J5/18
CPCC08L23/12C08J5/18C08J2323/12C08J2457/02C08J2423/00C08J2453/02C08L2205/03C08L2203/16C08L57/02C08L23/00C08L53/025
Inventor 彭胜石
Owner FOSHAN SUXING MASTERBATCH
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