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Reinforced and toughened PET plastic and preparation method thereof

A technology for strengthening and toughening plastics, applied in the field of plastics, can solve the problems of low bending strength and low tensile strength of plastic particles, and achieve the effects of simple preparation method and simple and easy-to-obtain raw materials.

Inactive Publication Date: 2015-12-23
SUZHOU POLYMER NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The invention provides a reinforced and toughened PET plastic with high tensile strength, high bending strength, high impact strength and high elongation at break and a preparation method thereof, which solves the technical problems of low tensile strength and low bending strength of existing plastic particles

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Step 1: Weigh 100 parts of PET, 10 parts of HDPE, 5 parts of PE, 1 part of PP, 20 parts of glass fiber, 15 parts of silane coupling agent, 12 parts of ethylene, 13 parts of n-butyl acrylate, anti-oxidant Agent 1010 is 0.1 part, antioxidant 168 is 1 part.

[0022] Step 2: Put HDPE and n-butyl acrylate into the reactor and mix for 40 minutes, add PET, PE, PP and silane coupling agent, raise the temperature to 75°C, and mix for 55 minutes at a speed of 170r / min.

[0023] Step 3: Add glass fiber, ethylene, n-butyl acrylate, antioxidant 1010 and antioxidant 168, mix evenly, put into a twin-screw extruder, heat up to 195°C, extrude and granulate.

[0024] Product friction coefficient 0.35, transverse shrinkage rate 1.1%, longitudinal shrinkage rate 0.9%, shrinkage ratio 1.2, heat distortion temperature 250°C; tensile strength 75MPa, impact strength 50kJ / m 2 , elongation at break 350%, bending strength 40MPa.

Embodiment 2

[0026] Step 1: Weigh 100 parts of PET, 30 parts of HDPE, 25 parts of PE, 20 parts of PP, 40 parts of glass fiber, 35 parts of silane coupling agent, 18 parts of ethylene, 17 parts of n-butyl acrylate, antioxidant Agent 1010 is 0.5 parts, antioxidant 168 is 5 parts.

[0027] Step 2: Put HDPE and n-butyl acrylate into the reactor and mix for 60 minutes, add PET, PE, PP and silane coupling agent, raise the temperature to 95°C, and mix for 75 minutes at a speed of 190r / min.

[0028] Step 3: Add glass fiber, ethylene, n-butyl acrylate, antioxidant 1010 and antioxidant 168, mix evenly and put it into a twin-screw extruder, heat up to 235°C to extrude and granulate.

[0029] Product friction coefficient 0.3, transverse shrinkage rate 1.2%, longitudinal shrinkage rate 1%, shrinkage ratio 1.3, heat distortion temperature 255°C; tensile strength 85MPa, impact strength 55kJ / m 2 , Elongation at break 400%, bending strength 45MPa.

Embodiment 3

[0031] Step 1: Weigh 100 parts of PET, 15 parts of HDPE, 10 parts of PE, 5 parts of PP, 25 parts of glass fiber, 20 parts of silane coupling agent, 13 parts of ethylene, 14 parts of n-butyl acrylate, anti-oxidant Agent 1010 is 0.2 parts, antioxidant 168 is 2 parts.

[0032] Step 2: Put HDPE and n-butyl acrylate into the reactor and mix for 40 minutes, add PET, PE, PP and silane coupling agent, raise the temperature to 75°C, and mix for 55 minutes at a speed of 170r / min.

[0033] Step 3: Add glass fiber, ethylene, n-butyl acrylate, antioxidant 1010 and antioxidant 168, mix evenly, put into a twin-screw extruder, heat up to 195°C, extrude and granulate.

[0034] Product friction coefficient 0.25, transverse shrinkage rate 1.4%, longitudinal shrinkage rate 1.1%, shrinkage ratio 1.4, heat distortion temperature 260°C; tensile strength 95MPa, impact strength 60kJ / m 2 , elongation at break 450%, bending strength 50MPa.

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Abstract

The invention discloses reinforced and toughened PET plastic and a preparation method thereof. The plastic is prepared from PET, HDPE, PE, PP, glass fibers, silane coupling agents, ethene, butyl acrylate, antioxidant 1010 and antioxidant 168. The product friction coefficient ranges from 0.15 to 0.35, the lateral shrinkage rate ranges from 1.1% to 1.5%, the longitudinal shrinkage rate ranges from 0.9% to 1.3%, the contraction ratio ranges from 1.2 to 1.6, and the thermal deformation temperature ranges from 250 DEG C to 270 DEG C; the tensile strength ranges from 75 MPa to 115 MPa, the impact strength ranges from 50 kJ / m<2> to 70 kJ / m<2>, the elongation at break range from 350% to 550%, and the bending strength ranges from 40 MPa to 60 MPa.

Description

technical field [0001] The invention relates to the technical field of plastics, in particular to a reinforced and toughened PET plastic and a preparation method thereof. Background technique [0002] Plastic particles, commonly known as plastic particles, are raw materials for storage, transportation and processing of plastics in the form of semi-finished products. Plastic is a kind of polymer material. Petroleum is used as raw material to produce PP, propylene, chlorine PP, benzene PP, etc. The molecules of these substances can react with each other under certain conditions to form compounds with large molecular weight, that is, polymers. [0003] The most prominent property of polypropylene is its versatility, which is suitable for many processing methods and uses. Its value and versatility mainly come from its excellent chemical resistance, the lowest density and highest melting point among all thermoplastics, and moderate cost. [0004] Plastic is a derivative of petr...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L23/06C08L23/12C08K13/04C08K7/14C08K5/134C08K5/526
Inventor 翟红波杨振枢韦洪屹
Owner SUZHOU POLYMER NEW MATERIALS TECH