Polyolefin high-concentration plasticizer master batch, and preparation method and application thereof

A polyolefin and plasticizer technology, which is applied in the field of polyolefin high-concentration plasticizer masterbatch and its preparation, can solve the problem that the material cannot achieve the effect of plasticization, the plasticizer is difficult to disperse uniformly, and the antifogging agent is difficult to Uniform dispersion and other problems, to achieve the effect of low cost, excellent physical and mechanical properties, and solving processing difficulties

Inactive Publication Date: 2020-10-13
安徽星贝达新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Plasticizers commonly used in polymer materials exist in three forms: pellets, powders and liquids, and most of them are added to polymer materials in the form of masterbatches, which is difficult to achieve uniform dispersion
The traditional preparation method of plasticizer masterbatch is to mix the plasticizer and polymer resin uniformly in the mixer, melt and extrude through the twin-screw extruder, and then granulate. This method has great limitations. : 1. It is difficult for plasticizers to disperse uniformly in polymer materials, especially powder and liquid antifogging agents; 2. For plasticizers with lower melting points or poor thermal stability than During the processing of the twin-screw extruder, it will be decomposed in advance, so that the whole material cannot achieve the effect of plasticization; 3. The addition of plasticizer will easily cause the screw to slip, making the extrusion process unstable and increasing the difficulty of processing; 4. 1. The content of plasticizing ingredients in the plasticizing masterbatch is not high, and the plasticizer molecules are easy to migrate, resulting in a decrease in the mechanical properties of the product

Method used

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  • Polyolefin high-concentration plasticizer master batch, and preparation method and application thereof
  • Polyolefin high-concentration plasticizer master batch, and preparation method and application thereof
  • Polyolefin high-concentration plasticizer master batch, and preparation method and application thereof

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preparation example Construction

[0091] In the present invention, the preparation method of the foamed polyolefin carrier at least includes the following steps:

[0092] (1) Add polyolefin, modifier, nucleating agent, antioxidant and lubricant to the extruder after mixing;

[0093] (2) inject blowing agent with the pressure of 10-20MPa in the compression section of extruder, extrude through the die head of extruder after mixing uniformly, obtain foamed polyolefin carrier; The die head of described extruder is Circular hole die with a hole diameter of 0.5-2mm.

[0094] In a preferred embodiment, the number of the circular hole dies is 2-30.

[0095] In a preferred embodiment, the extruder is sealed from the feeding port to the die head, and the compressive strength of the barrel of the extruder is ≥35 MPa.

[0096] The foaming agent in the present invention is injected at a certain pressure in the compression section of the extruder, which can ensure the stability of the system pressure and prevent the foami...

Embodiment 1

[0107] Embodiment 1 provides a kind of polyolefin high-concentration plasticizer masterbatch, the preparation raw material of described plasticizer masterbatch comprises expanded polyolefin carrier and plasticizer; Liquid hydrocarbons with a measured weight average molecular weight of 500-8000.

[0108] The liquid hydrocarbons were purchased from ExxonMobil Chemical, model Elevast TM C 30, the weight average molecular weight measured by gel permeation chromatography is 2195.

[0109] The raw materials for the preparation of the foamed polyolefin carrier include a polyolefin carrier composition and a foaming agent; the polyolefin carrier composition, by weight percentage, includes: polyolefin 85%, modifier 10%, nucleating agent 4% agent, 0.5% antioxidant, 0.5% lubricant; the melt flow rate of the polypropylene is 8g / 10min, selected from Sinopec, model F800E; the modifier is styrene-butadiene- Styrene block copolymer, the content of styrene is 25-35wt%, the melt flow rate is n...

Embodiment 2

[0117] Embodiment 2 provides a kind of polyolefin high-concentration plasticizer masterbatch, the preparation raw material of described plasticizer masterbatch comprises expanded polyolefin carrier and plasticizer; Liquid hydrocarbons with a measured weight average molecular weight of 500-8000.

[0118] The liquid hydrocarbons were purchased from ExxonMobil Chemical, model Elevast TM A80, the weight average molecular weight measured by gel permeation chromatography is 670.

[0119] The raw materials for the preparation of the foamed polyolefin carrier include a polyolefin carrier composition and a foaming agent; the polyolefin carrier composition, by weight percentage, includes: 80% polyolefin, 15% modifier, nucleating agent 3% agent, 1% antioxidant, 1% lubricant; the melt flow rate of the polypropylene is 8g / 10min, selected from Sinopec, model F800E; the modifier is styrene-butadiene- Styrene block copolymer, the content of styrene is 25-35wt%, the melt flow rate is not mor...

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Abstract

The invention relates to the technical field of organic polymer materials, in particular to a polyolefin high-concentration plasticizer master batch, and a preparation method and application thereof.The polyolefin high-concentration plasticizer master batch is prepared from the following raw materials: a foamed polyolefin carrier and a plasticizer, wherein the plasticizer is a liquid hydrocarboncompound having a weight average molecular weight of 500-8000, which is measured by gel permeation chromatography. According to the invention, the self-made foamed polyolefin carrier is adopted, and the carrier has a network structure formed by inter-communicating through holes and relatively high porosity and can fully absorb the plasticizer, so the high-concentration plasticizer master batch canbe prepared; the plasticizer master batch has the advantages of small addition amount in a high-molecular material, uniform dispersion, no influence on the performances of the high-molecular material, improvement of the physical performances of the high-molecular material and maintenance of the excellent physical and mechanical performances of the high-molecular material; and the preparation method is simple in process, low in cost and easy to operate.

Description

technical field [0001] The invention relates to the technical field of organic polymer materials, in particular to a polyolefin high-concentration plasticizer masterbatch and a preparation method and application thereof. Background technique [0002] Plasticizers are widely used, not only in many industries such as rubber, plastic film, plastic products, rubber and plastic materials, packaging materials, etc., but also as organic synthesis intermediates and solvents, surfactants, biochemicals, etc. Applications, involving multiple cross-penetrating fields, have a profound impact on the development of all walks of life. [0003] Plasticizers commonly used in polymer materials exist in three forms: pellets, powders and liquids, and most of them are added to polymer materials in the form of masterbatches, which is difficult to achieve uniform dispersion. The traditional preparation method of plasticizer masterbatch is to mix the plasticizer and polymer resin uniformly in the m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L53/02C08L83/04C08L23/06C08L25/06C08L23/16C08L23/30C08L91/06C08K3/34C08K5/526C08J3/22C08J9/12C08J9/36
CPCC08J3/226C08J9/0038C08J9/0061C08J9/0066C08J9/0095C08J9/122C08J9/36C08J2203/06C08J2423/06C08J2423/12C08J2423/16C08J2423/30C08J2425/06C08J2453/02C08J2483/04C08J2491/06C08K3/34C08K5/526
Inventor 张乃斌
Owner 安徽星贝达新材料科技有限公司
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