Polymer alloy products containing intercrystalline bridge texture and processing method thereof

A polymer and alloy technology, which is applied in the field of polymer alloy products with high mechanical properties and its processing, can solve the problems of cumbersome preparation and feeding, and achieve the effects of mild process conditions, small extrusion resistance, and convenient changes.

Inactive Publication Date: 2010-06-09
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is obvious that the preparation and feeding of the solid-state co-extruded billet is cumbersome, the shape of the product is simple, and the separation of the co-extruded product is required.

Method used

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  • Polymer alloy products containing intercrystalline bridge texture and processing method thereof
  • Polymer alloy products containing intercrystalline bridge texture and processing method thereof
  • Polymer alloy products containing intercrystalline bridge texture and processing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] 1. Polymer raw materials: The polymer combination is high-density polyethylene / isotactic polypropylene (HDPE / iPP), HDPE is 5000S produced by Beijing Yanshan Petrochemical Co., Ltd., the melt flow index is 0.946g / 10min, and iPP is T30S produced by PetroChina Dushanzi Petrochemical Company has a melt flow index of 2.9g / 10min;

[0046] 2. Melt blending and billet extrusion molding: mix HDPE and iPP pellets at a weight ratio of 5:95, and then heat them in a twin-screw extruder. Heating in five stages, temperature: 150°C, 170°C, 190°C, 200°C, 200°C, screw speed: 120 rpm, melted, plasticized and blended evenly, extruded into a cylindrical rod with an inner diameter of 45 mm In the die, it is shaped and cooled to become a solid HDPE / iPP polymer alloy rod blank with a diameter of 45 mm;

[0047] 3. Preheating of the billet: put the extruded HDPE / iPP alloy billet into the barrel (45 mm inner diameter) of the plunger extruder for heating, and set the temperature between HDPE and...

Embodiment 2

[0051] The mechanical properties of the HDPE / iPP (5 / 95) alloy sheet formed in Example 2 are listed in Table 2.

[0052] Table 2. Longitudinal and transverse strength of HDPE / iPP(5 / 95) alloy sheet

[0053] extrusion temperature

[0054] extrusion temperature

[0055] The wide-angle x-ray diffraction (WAXD) pattern of high-strength HDPE / iPP (5 / 95) alloy sheet is shown in figure 1 .

[0056] Example 2

[0057] 1. Polymer raw materials: The polymer combination is high-density polyethylene / isotactic polypropylene (HDPE / iPP), HDPE is 5000S produced by Beijing Yanshan Petrochemical Co., Ltd., the melt flow index is 0.946g / 10min, and iPP is T30S produced by PetroChina Dushanzi Petrochemical Company has a melt flow index of 2.9g / 10min.

[0058] 2. Melt blending: mix HDPE and iPP pellets according to the weight ratio of 10:90, and then put them into a single-screw extruder for heating. The extruder is heated in four stages from the feeding port to the machine head...

Embodiment 3

[0070] 1. Polymer raw material: The polymer combination is metallocene linear low density polyethylene / isotactic polypropylene (m-LLDPE / iPP), m-LLDPE is SP1520 produced by Mitsui Chemicals, Japan, and the melt flow index is 2.0g / 10min, iPP is T30S produced by China Petroleum Dushanzi Petrochemical Company, with a melt flow index of 2.9g / 10min;

[0071] 2. Melt blending and billet extrusion molding: Mix the pellets of m-LLDPE and iIPP according to the weight ratio of 10:90, and then put them into a twin-screw extruder for heating. The machine head is heated in five stages, the temperature is: 150°C, 170°C, 190°C, 200°C, 200°C, the screw speed is 120 rpm, melted, plasticized and blended evenly, then extruded into a cylindrical rod with an inner diameter of 45 mm In the material die, it is shaped and cooled to become a solid m-LLDPE / iPP polymer alloy rod blank with a diameter of 45 mm;

[0072] 3. Preheating of the billet: put the extruded m-LLDPE / iPP alloy billet into the barr...

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Abstract

A polymer alloy product containing heterogeneous attached crystal inter-crystalline bridge tissue structure and its production are disclosed. The process is carried out by crystallized forming attached-phase polymer A on orientated basis-phase polymer B, staggered overlapping, and intersecting ordered lamellar crystal C axis with basis-phase polymer B lamellar crystal C axis. It consists of orientated basis-phase polymer B 50-99 wt% and attached-phased polymer A 1-50 wt%. It forms into ordered crystal reinforced intersected braiding structure. It has better binding strength between two interfaces, rigidity, ductility and stress resistance. It has less amorphous fault.

Description

1. Technical field [0001] The invention belongs to the technical field of polymer material processing, and more specifically relates to a polymer alloy product with high mechanical properties and a processing method thereof. 2. Background technology [0002] With the urgent demand for lightweight, high-strength, high-modulus, and corrosion-resistant materials in aerospace, military, automotive, sports equipment, and chemical industries, research and development of low-cost, high-performance polymers and their products have great prospects for development . The modulus and strength of engineering plastics are relatively high, which can meet part of the demand for high-performance polymer materials in some occasions, but high-performance engineering plastics also have shortcomings such as low output, high price, and difficult processing. The high performance of general-purpose polymers has always been an important direction for people to explore and develop, and the means of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/06C08L23/12C08L77/00C08J5/00B29C69/00B29C47/00B29C43/00B29C55/00
Inventor 陈利民刘钵申开智李泽琼赵栓成王薇莉
Owner SICHUAN UNIV
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