Controllable rheological high-gloss polypropylene resin and preparation method thereof

A polypropylene resin, high-gloss technology, applied in the field of polypropylene resin, to achieve excellent heat resistance, improve appearance performance, and shorten the molding process cycle

Active Publication Date: 2011-01-12
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there are no relevant patent reports on high-gl

Method used

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  • Controllable rheological high-gloss polypropylene resin and preparation method thereof
  • Controllable rheological high-gloss polypropylene resin and preparation method thereof
  • Controllable rheological high-gloss polypropylene resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0020] Example 1

[0021] Take by weighing 100 parts of homopolypropylene (the number average molecular weight of homopolypropylene is 61235), phenolic antioxidant (tetra[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid] Pentaerythritol ester: tris (2.4-di-tert-butylphenyl) phosphite = 1: 1, mass ratio, hereinafter the same) 0.15 part, halogen absorbent (high-purity calcium stearate) 0.10 part, nucleating agent (( 3,4-dimethyldibenzylidene) sorbitol) 0.15 parts, the above materials were placed in a high-speed mixer and stirred evenly to obtain a base material for later use. Weigh 100 parts of homopolypropylene (the number average molecular weight of homopolypropylene is 63475), 0.65 parts of peroxide (dicumyl peroxide), put the above materials in a high-speed mixer and stir evenly, and use a twin-screw The extruder is processed into a peroxide masterbatch for later use. The obtained base material and peroxide masterbatch are respectively placed in the main material and a...

Example Embodiment

[0022] Example 2

[0023] Take by weighing 100 parts of homopolypropylene (the number average molecular weight of homopolypropylene is 63475), phenolic antioxidant (tetra[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid] Pentaerythritol ester: 0.15 part of tris (2.4-di-tert-butylphenyl) phosphite = 1: 1), 0.10 part of halogen absorbent (high-purity calcium stearate), nucleating agent ((3,4-dimethyl Dibenzylidene) sorbitol) 0.2 parts, put the above materials in a high-speed mixer and stir evenly to obtain the base material for later use. Take by weighing 100 parts of homopolypropylene (the number average molecular weight of homopolypropylene is 63475), peroxide (1,1-bis(tert-butyl peroxide)-3,3,5-trimethylcyclohexane ) 0.65 parts, the above-mentioned materials are placed in a high-speed mixer and stirred evenly, and processed into a peroxide masterbatch with a twin-screw extruder for subsequent use. The obtained base material and peroxide masterbatch were respectively pla...

Example Embodiment

[0024] Example 3

[0025] Take by weighing 100 parts of homopolypropylene (the number average molecular weight of homopolypropylene is 63475), phenolic antioxidant (tetra[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid] Pentaerythritol ester: 0.15 part of tris (2.4-di-tert-butylphenyl) phosphite = 1: 1), 0.10 part of halogen absorbent (high-purity calcium stearate), nucleating agent ((3,4-dimethyl Dibenzylidene) sorbitol) 0.15 parts, gloss modifier (polypropylene wax) 0.1 part, put the above materials in a high-speed mixer and stir evenly to obtain the base material for later use. Take by weighing 100 parts of homopolypropylene (the number average molecular weight of homopolypropylene is 63475), 0.65 part of peroxide (1,1-bis(tert-butylperoxide)-3,3,5-trimethylcyclo hexane), the above-mentioned materials are placed in a high-speed mixer and stirred evenly, and processed into a peroxide masterbatch with a twin-screw extruder for subsequent use. The obtained base material...

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Abstract

The invention discloses a controllable rheological high-gloss polypropylene resin which is composed of the following components in parts by weight: 100 parts of homo polypropylene as a base material, 0.1-0.25 part of processing agent, 0.15-0.2 part of nucleating agent, 0-1.5 parts of hardness regulator, 0.05-0.1 part of glossiness regulator and 1-12 parts of oxide master batch, wherein the number-average molar mass of the homo polypropylene is 61235-65210; the oxide master batch is formed by mixing 100 parts of homo polypropylene and 0.1-0.65 part of peroxide. Thus, the rheological behaviour of the resin can be changed by regulating the additive amount of the peroxide master batch. The controllable rheological high-gloss polypropylene resin of the invention has favourable heat resistance (heat distortion temperature is more than or equal to 110 DEG C) and higher rigidity (bending modulus is more than or equal to 1800 MPa). Because of adopting the controllable rheological technology, the invention can flexibly regulate the melt flowing rate of the material, and the material has excellent processability, heat-resistant quality and mechanical property.

Description

technical field [0001] The present invention relates to polypropylene resins, in particular to high-gloss polypropylene resins and methods for their preparation. Background technique [0002] In recent years, with the continuous deepening of reform and opening up and the improvement of people's material and cultural living standards, the home appliance industry is developing rapidly, and the demand for home appliance shell plastics in the domestic market is growing rapidly. Due to its high rigidity and heat resistance, high-gloss heat-resistant polypropylene material is favored by more and more home appliance shell manufacturers and is widely used in electric kettles and electric appliances due to its low price compared with ABS and HIPS. Injection molding of the casing of small household appliances such as rice cookers. With the further improvement of its comprehensive performance, its use space is also expanding, and it has increasingly shown broad application prospects. ...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08K13/02C08K5/14
Inventor 姚小利徐振明林龙陆小义
Owner CHINA PETROLEUM & CHEM CORP
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