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Preparation method of HDPE polymer film with high strength and high impact resistance

An impact-resistant, polymer film technology, applied in the field of HDPE polymer film preparation, can solve the problems of material rigidity reduction, low modulus, low strength, etc., and achieve reduced tensile strength, simple preparation method, and processing flow. The effect of sexual change

Pending Publication Date: 2019-03-15
潍坊市宇虹防水材料(集团)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, elastomers usually used as toughening agents are mostly low-modulus and low-strength materials, and their addition in large quantities will lead to a decrease in the rigidity of the material

Method used

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  • Preparation method of HDPE polymer film with high strength and high impact resistance
  • Preparation method of HDPE polymer film with high strength and high impact resistance

Examples

Experimental program
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Effect test

Embodiment 1

[0019] A preparation method of a high-strength impact-resistant HDPE polymer film, comprising the following steps:

[0020] Step 1: Prepare materials: weigh HDPE, POE and CaCO3 for later use;

[0021] Step 2: Granulation: put POE / HDPE mass ratio of 5 / 95 into the Haake torque rheometer with temperature 170°C and rotation speed 40r / min, blend for 3 minutes, discharge and extrude and granulate;

[0022] Step 3: Add CaCO3: Add 5% CaCO3 to the pellets obtained in Step 2, increase the speed of the Haake torque rheometer by 50r / min, keep the temperature constant, and blend for 5 minutes to obtain a total of CaCO3 / POE / HDPE mixture particles;

[0023] Step 4: Place the CaCO3 / POE / HDPE blend particles prepared in step 3 in a dryer for drying;

[0024] Step 5: Add the dried CaCO3 / POE / HDPE blend particles in step 4 to a column-type flat vulcanizing machine with a temperature of 170 ℃ and a pressure of 3 MPa. After preheating, pressure keeping and cooling, press it into a waterproof roll ...

Embodiment 2

[0029] A preparation method of a high-strength impact-resistant HDPE polymer film, comprising the following steps:

[0030] Step 1: Prepare materials: weigh HDPE, POE and CaCO3 for later use;

[0031] Step 2: Granulation: Put POE / HDPE mass ratio of 10 / 90 into Huck torque rheometer with temperature of 175°C and rotation speed of 45r / min, blend for 4min, discharge, extrude and granulate;

[0032] Step 3: Add CaCO3: Add 10% CaCO3 to the pellets obtained in Step 2, increase the speed of the Haake torque rheometer to 60r / min, keep the temperature constant, and blend for 7 minutes to obtain a total of CaCO3 / POE / HDPE mixture particles;

[0033] Step 4: Place the CaCO3 / POE / HDPE blend particles prepared in step 3 in a dryer for drying;

[0034] Step 5: Add the dried CaCO3 / POE / HDPE blend particles in step 4 to a column-type flat vulcanizing machine with a temperature of 175°C and a pressure of 4 MPa. After preheating, pressure keeping and cooling, press it into a waterproof roll of a ...

Embodiment 3

[0039] A preparation method of a high-strength impact-resistant HDPE polymer film, comprising the following steps:

[0040] Step 1: Prepare materials: weigh HDPE, POE and CaCO3 for later use;

[0041] Step 2: Granulation: put POE / HDPE mass ratio of 15 / 85 into the Haake torque rheometer with temperature of 180°C and rotation speed of 50r / min, blend for 5min, discharge, extrude and granulate;

[0042] Step 3: Add CaCO3: Add 15% CaCO3 to the pellets obtained in Step 2, increase the speed of the Haake torque rheometer to 70r / min, keep the temperature constant, and blend for 8 minutes to obtain a total of CaCO3 / POE / HDPE mixture particles;

[0043] Step 4: Place the CaCO3 / POE / HDPE blend particles prepared in step 3 in a dryer for drying;

[0044] Step 5: Add the dried CaCO3 / POE / HDPE blend particles in step 4 to a column-type flat vulcanizing machine with a temperature of 180 ℃ and a pressure of 5 MPa, and press it into a waterproof roll with a certain thickness after preheating, p...

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Abstract

The invention discloses a preparation method of an HDPE polymer film with high strength and high impact resistance. The preparation method comprises the steps of material preparation, blending pelleting, CaCO3 adding, drying, preheating, pressure maintaining and cooling. Toughening modification is carried out on HDPE by using a polyolefin elastomer (POE), and simultaneously, a melt blending methodis adopted, an HDPE waterproof roll is prepared by filling an HDPE / POE blending system with an inorganic filler CaCO3, and the prepared HDPE film has the advantages of excellent physical index and high impact resistance; the tenacity of HDPE can be improved greatly through the addition of POE, the tensile strength is reduced, the elongation at break is increased, the hardness is reduced, and theimpact resistance is increased; the balance torque of HDPE can be reduced through the addition of CaCO3 and POE, the processing fluidity becomes higher, and the impact resistance is high; and moreover, the preparation method disclosed by the invention is simpler and low in equipment requirements, and has a preferable popularization effect.

Description

technical field [0001] The invention relates to the technical field of polymer films, in particular to a preparation method of a high-strength HDPE polymer film with strong impact resistance. Background technique [0002] High-density polyethylene (HDPE) is one of the three most common polyethylenes. It has the characteristics of high crystallinity and non-polarity. It has been used for a few years. With the development of polymer self-adhesive film waterproof membrane, HDPE The self-adhesive waterproof membrane as the main material has developed rapidly. Most of the polymer self-adhesive waterproof membranes use HDPE as the main material. Waterproof membrane made of membrane. However, HDPE has high rigidity and poor impact resistance, and it is difficult for a single HDPE material to meet the performance requirements of building waterproof membranes in practical applications, so it needs to be toughened and modified; [0003] The most important method of polymer toughenin...

Claims

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Application Information

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IPC IPC(8): C08J5/18C08L23/06C08L23/08C08K3/26
CPCC08J5/18C08J2323/06C08J2423/08C08K2003/265
Inventor 郑智海
Owner 潍坊市宇虹防水材料(集团)有限公司
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