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Material special for corrugated pipe for high-density polyethylene prestressed concrete and production method thereof

A high-density polyethylene, prestressed technology, applied in the direction of pipes, rigid pipes, pipes/pipe joints/fittings, etc., can solve the problems of ring stiffness bellows dimensional stability and poor weight gain effect, and achieve enhanced overall mechanical properties , Extensive supply and low price effect

Active Publication Date: 2012-05-09
广东致顺化工环保设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention uses a modified masterbatch made of composite powder materials to improve the flexural modulus, flexural strength, and tensile strength of the pipe, and is used for the production of large-diameter HDPE corrugated pipes, while the ring stiffness of the corrugated pipes and the size of the corrugated pipes are stable. Relatively poor in sex and weight gain

Method used

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  • Material special for corrugated pipe for high-density polyethylene prestressed concrete and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] First, add 8kg of mica powder (500 mesh), 0.1kg of silane coupling agent KH570 (Foshan Daoning Chemical Co., Ltd.), and 1kg of PE wax into a high-speed mixer, and blend at a speed of 1200r / min while heating Raise the temperature to 120°C, stir at a high speed of 1200r / min for 3 minutes, then add 100kg of recycled high-density polyethylene, 1kg of maleic anhydride grafted polyethylene (Foshan Baichen Polymer Material Co., Ltd.), white mineral oil (Maoming Petrochemical) 0.5kg, antioxidant 1010 (Taiwan Nanya Plastic Industry Co., Ltd.) 0.1kg, color masterbatch 0.2kg, continue mixing for 5 minutes at a temperature of 120°C and a rotating speed of 1200r / min, and then transfer to 180r Mix at a low speed of 1 / min, and discharge at 45°C. Finally, the mixed material is transferred to a twin-screw extruder for extruding and granulating to obtain a special material for corrugated pipes for high-density polyethylene prestressed concrete.

[0038] The density of ordinary high-dens...

Embodiment 2

[0040] First, 12kg of mica powder (400 mesh), 0.2kg of silane coupling agent KH570 (Foshan Daoning Chemical Co., Ltd.), and 2kg of PE wax are added to a high-speed mixer, and blended at a rotating speed of 1000r / min. High temperature to 130°C, then high-speed stirring at 1000r / min for 5 minutes, followed by adding 100kg of recycled high-density polyethylene, 3kg of maleic anhydride grafted polyethylene (Foshan Baichen Polymer Material Co., Ltd.), white mineral oil (Maoming Petrochemical) 1.0kg, antioxidant 1010 (Taiwan Nanya Plastic Industry Co., Ltd.) 0.3kg, color masterbatch 0.4kg, continue mixing for 2 minutes at a temperature of 130°C and a rotating speed of 1000r / min, and then transfer to 100r Mix at a low speed of 1 / min, and discharge at 45°C. Finally, the mixed material is transferred to a twin-screw extruder for extruding and granulating to obtain a special material for corrugated pipes for high-density polyethylene prestressed concrete.

[0041] The density of ordina...

Embodiment 3

[0043] First, add 20kg of mica powder (600 mesh), 0.4kg of silane coupling agent KH570 (Foshan Daoning Chemical Co., Ltd.), and 3kg of PE wax into a high-speed mixer, and blend at a speed of 800r / min while heating Raise the temperature to 100°C, stir at a high speed of 1200r / min for 2 minutes at this temperature, then add 100kg of regenerated high-density polyethylene and maleic anhydride grafted polyethylene (Foshan Baichen Polymer Material Co., Ltd.) 6kg, white mineral oil (Maoming Petrochemical) 1.5kg, antioxidant 1010 (Taiwan Nanya Plastic Industry Co., Ltd.) 0.5kg, color masterbatch 0.5kg, continue mixing for 5 minutes at a temperature of 100°C and a rotating speed of 1200r / min , and then turn to a low speed of 300r / min for mixing, and discharge at 45°C. Finally, the mixed material is transferred to a twin-screw extruder for extruding and granulating to obtain a special material for corrugated pipes for high-density polyethylene prestressed concrete.

[0044] The density...

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Abstract

The invention discloses a material special for a corrugated pipe for high-density polyethylene (PE) prestressed concrete and a production method thereof. According to a raw material formula, the material comprises the following components in part by weight: 100 parts of recycled high-density polyethylene, 5 to 20 parts of mica powder, 0.1 to 0.5 part of silane coupling agent KH570, 1 to 6 parts of maleic anhydride grafted polyethylene, 1 to 3 parts of PE wax, 0. 3 to 1.5 parts of white mineral oil and 0.2 to 0.5 part of color master batch, and is prepared by the following steps of: adding themica powder, the silane coupling agent and the PE wax into a high-speed mixer; mixing at the rotation speed of between 800 and 1,200r / min and the temperature of between 100 and 130 DEG C for 2 to 5 minutes to activate the surface of the mica powder so as to obtain uniformly dispersed powdery mixture; and adding the recycled high-density polyethylene and the like in turn. The material special for the corrugated pipe for the high-density polyethylene prestressed concrete is low in cost, has high strength and stable performance, and can meet the operating requirements of the fields of capital construction of concrete, such as bridges, long-span building and the like.

Description

technical field [0001] The invention relates to a special material for bellows used in high-density polyethylene prestressed concrete, in particular to the special material for plastic bellows modified by recycled high-density polyethylene and a production method thereof. Background technique [0002] Prestressed plastic corrugated pipes are used in post-tensioned prestressed concrete structures as hole-forming pipes for prestressed tendons. In the post-tensioning prestressing technology, the reserved channel technology is one of the key technologies. With the continuous progress of materials, machinery, engineering and other technologies, the reserved channel has developed from the earliest drawn pipe to the metal bellows, and then developed to the current Plastic bellows. [0003] With a series of infrastructure investment plans issued by the state, the construction of bridges and large venues is in full swing, not only has a huge demand for prestressed concrete plastic b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/06C08L51/06C08K13/06C08K9/06C08K3/34B29B9/06F16L9/12
Inventor 冯愚斌王炼石瞿骞童玉宝
Owner 广东致顺化工环保设备有限公司
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