A high-gloss, puncture-resistant low-density polyethylene masterbatch
A low-density polyethylene and puncture-resistant technology, which is applied in the field of low-density polyethylene masterbatches, can solve the problems affecting the puncture resistance of materials and increase the crystallinity of polyethylene films, and achieve excellent gloss, improved puncture resistance, and high Effect of puncture resistance
Active Publication Date: 2021-04-02
CHINA PETROLEUM & CHEM CORP
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Problems solved by technology
At the same time, due to the particularity of protective film products, there are high requirements for the puncture resistance of film materials. It is difficult for ordinary linear polyethylene products to have both high gloss and puncture resistance.
In general, adding a nucleating agent to improve the gloss and transparency of the polyethylene film will increase the crystallinity of the polyethylene film, which will affect the puncture resistance of the material to a certain extent.
Method used
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Embodiment 1～ Embodiment 10
[0031] Linear polyethylene resin (MLPE-1810, Sinopec Maoming Branch, melt flow rate 0.8-1.2g / 10min, density 0.916-0.920kg / m 3 ), the above high-gloss puncture-resistant polyethylene masterbatch and antioxidant are added to a high-speed mixer, and the speed is 300 rpm to fully mix for 3 to 6 minutes, so that all components are fully mixed and evenly mixed. Then put the above mixture into the screw extruder, control the temperature of the screw extruder and the die head at 175-210°C, and the screw speed at 160-280rpm, plasticize, melt and blend the mixture, extrude and granulate to obtain high-gloss and durable Piercing linear polyethylene resin.
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Abstract
The invention discloses a low-density polyethylene masterbatch with high gloss and puncture resistance; the low-density polyethylene masterbatch mainly includes the following raw materials in parts bymass: 100 parts of linear low-density polyethylene, 10-40 parts of low-density polyethylene, 8-46 parts of a nano EVA composite transparent increasing agent, 0.1-0.5 part of a main antioxidant, and 0.2-1.0 part of an auxiliary antioxidant. The masterbatch has the advantages of excellent gloss, high puncture resistance and the like.
Description
technical field [0001] The invention relates to a low-density polyethylene composition, in particular to a low-density polyethylene masterbatch with high gloss and puncture resistance. Background technique [0002] Linear low-density polyethylene (LLDPE for short) is non-toxic, tasteless, odorless milky white particles with a density of 0.918-0.935g / cm 3 . Compared with LDPE, LLDPE has a higher softening temperature and melting temperature, and has the advantages of high strength, good toughness, high rigidity, heat resistance, and cold resistance. Tear strength and other properties are widely used in the production of agricultural film, packaging film, composite film, etc. [0003] Since the molecular chain of LLDPE is dominated by short-chain branched chains and has a high degree of crystallinity, its transparency has been relatively low. In the actual downstream application process, some manufacturers of electronic product film, automotive protective film, and metal su...
Claims
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IPC IPC(8): C08L23/08C08L23/06C08K13/02C08K5/098C08K5/42C08K3/34C08K5/134C08K5/526C08J3/22
Inventor 岑静芸蔡伟许敏
Owner CHINA PETROLEUM & CHEM CORP