Toughened and modified pentatricopeptide repeats (PPR) extrusion pipe material and preparation method thereof

A technology of toughening, modifying and extruding pipes, applied in rigid pipes, pipes, mechanical equipment, etc., can solve the problems of welding strength and stiffness of PPR pipes, decrease in heat resistance of PPR pipes, decrease in low temperature toughness, etc. Welding strength and heat resistance, the effect of preventing the reduction of rigidity and improving the low temperature toughness

Inactive Publication Date: 2014-02-05
TIANJIN KINGFA NEW MATERIAL +1
View PDF1 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the fatal shortcoming of PPR pipes is poor low temperature toughness. When the ambient temperature is lower than 0°C, the low temperature toughness drops sharply.
In order to solve this defect, some studies have used ethylene-octene copolymer (POE) to toughen PPR pipes to improve their low-temperature toughness, but using this method, on the one hand, the heat resistance of PPR pipes will decrease significantly, and the welding strength of PPR pipes , the stiffness will be greatly affected by

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Toughened and modified pentatricopeptide repeats (PPR) extrusion pipe material and preparation method thereof
  • Toughened and modified pentatricopeptide repeats (PPR) extrusion pipe material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1: Comparative Example 1

[0029] Melt and mix 99.7 kg of polypropylene PP R4220, 0.1 kg of heat stabilizer 1010, 0.1 kg of heat stabilizer 168, and 0.1 kg of polypropylene special nucleating agent TMP-5 in a twin-screw extruder with an aspect ratio of 40:1 Disperse, set the temperature of each section of the extruder at 220-260°C, extrude and granulate to obtain the product.

Embodiment 2

[0030] Embodiment 2: comparative example 2

[0031] 89.7 kg of polypropylene PP R4220, 10 kg of ethylene-octene copolymer POE DF610, 0.1 kg of heat stabilizer 1010, 0.1 kg of heat stabilizer 168, 0.1 kg of polypropylene special nucleating agent TMP-5 at an aspect ratio of 40 : 1 Melt, mix and disperse in a twin-screw extruder, set the temperature of each section of the extruder at 220-260°C, extrude and granulate, and finally obtain the product.

[0032] Embodiment: 3: the preparation of toughened modified PPR extruded pipe material

[0033] 94.5 kg of polypropylene PP R4220, 5 kg of ethylene-octene copolymer POE DF610, 5 kg of polybutene PB-10850M, 0.1 kg of heat stabilizer 1010, 0.1 kg of heat stabilizer 168, and 0.1 kg of special nucleating agent for polypropylene TMP-5 is melted, mixed and dispersed in a twin-screw extruder with a length-to-diameter ratio of 40:1. The temperature of each section of the extruder is set at 220-260 ° C, extruded and granulated, and finally t...

Embodiment 4

[0034] Example 4: Preparation of toughened modified PPR extruded pipe material

[0035] 81.2 kg of polypropylene PP R200P, 8 kg of styrene elastomer SEPTON2063, 10 kg of polybutene PB-1DP9217M, 0.3 kg of heat stabilizer 1010, 0.3 kg of heat stabilizer 168, 0.2 kg of special nucleating agent for polypropylene TMP- 5 Melt, mix and disperse in a twin-screw extruder with an aspect ratio of 40:1, set the temperature of each section of the extruder at 220-260°C, extrude and granulate, and finally obtain the product.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention belongs to the technical field of toughened and modified pentatricopeptide repeats (PPR), and discloses a toughened and modified PPR extrusion pipe material and a preparation method thereof. The toughened and modified PPR extrusion pipe material comprises the following components by mass percent: 58-98% of PPR, 1-20% of a toughening agent, 1-20% of poly 1-butene, 0-1% of a heat stabilizer and 0-1% of a nucleating agent special for polypropylene. According to the method, synergistic toughening of the traditional toughening agent and novel toughening agent of poly 1-butene is adopted, so that the low-temperature toughness of the PPR extrusion pipe material is improved, and the welding strength and heat resistance are ensured. The tensile strength at 23 DEG C is greater than or equal to 25MPa, the elongation at break at 23 DEG C is greater than or equal to 500%, the tensile strength at 95 DEG C is greater than or equal to 10MPa, the low-temperature notch impact strength at 30 DEG C below zero is greater than or equal to 5KJ / m<2>, and the vicat softening temperature (10N) is greater than or equal to 125 DEG C.

Description

technical field [0001] The invention belongs to the technical field of toughened modified PPR, in particular to a toughened modified PPR extruded pipe material and a preparation method thereof. Background technique [0002] PPR is also called three-type polypropylene pipe and random copolymerized polypropylene. Random copolymerized polypropylene is extruded into pipes and injection molded into pipe fittings. It is a new type of plastic pipe product developed and applied in Europe in the early 1990s. In the late 1980s, about 5% of PE was randomly and uniformly polymerized in the PP molecular chain by using the gas phase copolymerization process to become a new generation of pipeline materials. It has high strength, good impact resistance and long-term creep performance. At the same time, the pipe has excellent chemical corrosion resistance and is insoluble in any known solvents at room temperature, so it is more suitable for transporting chemical fluids in chemical plants a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C08L23/14C08L23/20C08L23/08C08L23/16C08L53/02C08K5/134C08K5/526B29C47/92F16L9/12B29C48/92
CPCC08L23/14B29B9/06B29C48/92B29C2948/92704C08L2203/18C08L2205/03C08L2205/035C08L2207/14C08L23/20C08L23/0815C08L53/025C08L23/16C08L53/02
Inventor李欣李晟刘乐文张春怀陶四平聂德林陈国雄宋晓东
OwnerTIANJIN KINGFA NEW MATERIAL