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High density polyethylene resin for blow molding of middle-sized hollow container and preparation method thereof

A high-density polyethylene, hollow technology, applied in the field of modified high-density polyethylene resin and its preparation, can solve the problems of improving the appearance and color of the product, affecting the life of the product, and achieving outstanding oxidation resistance and excellent resistance to environmental stress cracking. , the effect of low yellow index

Active Publication Date: 2017-03-29
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method does not add a light stabilizer, so that the blown product will age under the influence of light for a long time, which will affect the life of the product, and does not improve the appearance and color of the product.

Method used

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  • High density polyethylene resin for blow molding of middle-sized hollow container and preparation method thereof
  • High density polyethylene resin for blow molding of middle-sized hollow container and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Expressed in parts by weight, 100 parts of ethylene hexene copolymerized high-density polyethylene base resin, 0.05 part of main antioxidant 3114, 0.15 part of compound auxiliary antioxidant (the addition of 626 is 0.01 part, the addition of P-EPQ 0.14 parts), 0.10 parts of light stabilizer 2020, 0.05 parts of halogen absorbent zinc stearate, add to a high-speed mixer and mix thoroughly, mix at 300r / min for 2 minutes and then 2000r / min for 0.5 minutes, then add twin-screw extruder Granulation is carried out in the extruder. During the granulation process, the temperature of each section of the extruder from the feed port to the head: 170°C, 180°C, 185°C, 190°C, 295°C, 200°C, 190°C, 185°C, 185°C, 175°C.

Embodiment 2

[0033] Expressed in parts by weight, 100 parts of ethylene hexene copolymerized high-density polyethylene base resin, 0.05 part of main antioxidant 3114, 0.14 part of compound auxiliary antioxidant (the addition of 626 is 0.02 part, the addition of P-EPQ 0.12 parts), 0.10 parts of light stabilizer 2020, 0.05 parts of halogen absorbent zinc stearate, add to a high-speed mixer and mix thoroughly, mix at 300r / min for 2 minutes and then 2000r / min for 0.5 minutes, then add twin-screw extruder The granulation is carried out in the extruder. The temperature of each section of the extruder from the feeding port to the die head during the granulation process: 173°C, 182°C, 187°C, 193°C, 198°C, 203°C, 193°C, 187°C, 187°C, 178°C.

Embodiment 3

[0035] Expressed in parts by weight, 100 parts of ethylene hexene copolymerized high-density polyethylene base resin, 0.05 part of main antioxidant 3114, 0.14 part of compound auxiliary antioxidant (the addition of 626 is 0.04 part, the addition of P-EPQ 0.10 parts), 0.10 parts of light stabilizer 2020, 0.05 parts of halogen absorber zinc stearate, add to high-speed mixer and mix thoroughly, mix at 600r / min for 1.5 minutes and then at 2000r / min for 0.5 minutes, then add twin-screw extruder The granulation is carried out in the extruder, the temperature of each section of the extruder from the feeding port to the die head during the granulation process: 175°C, 185°C, 190°C, 195°C, 200°C, 205°C, 195°C, 190°C, 190°C, 180°C.

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Abstract

The invention discloses a high density polyethylene resin for blow molding of a middle-sized hollow container and a preparation method thereof. The yellow color index of the resin ranges from -2 to 1, the antioxidant induction time t is more than or equal to 30min (210 DEG C) and time t for resisting environmental stress cracking is more than or equal to 75h (F50). The raw materials include 100 parts of ethylene hexane copolymerized high density polyethylene base resin, 0.05-0.10 part of a main antioxidant, 0.14-0.19 parts of a complex auxiliary antioxidant, 0.10 part of a light stabilizer and 0.05-0.15 parts of a halogen absorbent. The blow molding material for the middle-sized hollow container has excellent environmental stress cracking resistance, is characterized by excellent oxidation resistance, lower yellow color index, higher strength, and the like, meets the processing performances and various physical indexes required by the middle-sized hollow blow molding, is suitable for the blow molding of various anti-corrosion hollow containers, can be widely used for packaging in the industries of chemical engineering, petroleum, medicines, and the like, is easy to produce and is stable to supply.

Description

technical field [0001] The invention relates to a modified high-density polyethylene resin for medium-sized hollow blow molding (20-200L), in particular to a modified high-density polyethylene resin with lower yellowness index, better oxidation resistance and good resistance to environmental stress cracking Polyethylene resin and its preparation method. Background technique [0002] High-density polyethylene (HDPE) is odorless, non-toxic, excellent low-temperature performance and chemical resistance. Plastic hollow containers made of HDPE are widely used in detergents, cleaning products, cosmetics, lubricants, industrial chemicals and automobiles. Packaging with chemicals. According to the size of the hollow container volume, the hollow container products are divided into large-scale hollow containers (greater than 200L), medium-sized containers (20-200L), and small-sized containers (below 10L). However, it was found during use that HDPE hollow containers are prone to envi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08K5/3492C08K5/526C08K5/5393C08K5/3435C08K5/098B29C47/92B29C48/92
CPCB29C48/92B29C2948/92704C08K5/098C08K5/3435C08K5/3492C08K5/526C08K5/5393C08L2201/08C08L2207/062C08L23/0815
Inventor 张威张娜马国玉李玉松曹建秋王辉赵长江
Owner CHINA PETROLEUM & CHEM CORP
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