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Heat-resisting PVC high impact-resisting tubular product and preparation method thereof

A high-impact, PVC resin technology, used in pipes, rigid pipes, mechanical equipment, etc., can solve the problems of not excellent heat resistance, high raw material prices, and high production costs, and achieve high Vicat softening temperature and production technology. Simple, high extrusion speed effect

Active Publication Date: 2013-01-09
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The Chinese patent "Dendritic Polyether Ketone and Its Heat-resistant Blends with PVC" (patent application number: 00104981.X) relates to a dendritic polyether ketone with a glass transition temperature (Tg) higher than 160°C. And studied dendritic polyether ketone and PVC heat-resistant modified blends, but the raw materials are not easy to purchase, and the production cost is high
Japanese patent (application number JP20010289372) relates to recyclable polyvinyl chloride pipes with good heat resistance and working stability. Although the Vicat softening temperature of the pipes in the examples is greater than or equal to 80°C, it meets the urban construction industry standard CJ / T272- 2008 "Impact-resistant modified polyvinyl chloride (PVC-M) pipes and fittings for water supply" indicators, but the impact resistance of the pipes is not satisfactory, the heat resistance is still not excellent, and the price of raw materials is high, and the production cost of pipes is relatively high. higher
As we all know, heat resistance modification and impact modification are a pair of contradictions in PVC modification. The Vicat softening temperature of pure PVC is very high, but the impact performance is very poor; after adding impact modifier, the impact performance is improved. But the Vicat softening temperature drops sharply

Method used

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  • Heat-resisting PVC high impact-resisting tubular product and preparation method thereof
  • Heat-resisting PVC high impact-resisting tubular product and preparation method thereof
  • Heat-resisting PVC high impact-resisting tubular product and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The heat-resistant PVC high-impact resistance pipe is prepared by the following preparation process:

[0025] 1. Raw material compounding: mix 90 parts of QC-1050P PVC, 10 parts of CPVC (chlorine content 60%), 1.0 parts of organotin stabilizer, 5 parts of MBS additives, 5 parts of ACR additives, 3 parts of AS Additives, 0.5 parts of calcium stearate, 1.0 parts of PE wax, 0.2 parts of antioxidant 1010, 0.01 parts of carbon black and 1 part of nano-active calcium carbonate, add them to the high-speed mixer and mix for 10-15 minutes until When the mixing temperature is 100~130℃, put the material into the low-speed mixer, and discharge when the material temperature is cooled to 35~45℃;

[0026] 2. Pelletizing and extrusion molding: The mixed materials are pelletized by twin-screws. The temperature of the extruder is: zone 1 100℃, zone 2 120℃, zone 3 130℃, zone 4 140℃, zone 5 150℃ , The head is 150℃, and the pellets are extruded on the twin-screw extruder. The temperature of the...

Embodiment 2～5

[0028] See Table 1 for the proportions of the compositions used in the pipes of Examples 2-5.

[0029] Table 1 The proportions of the compositions used in the pipes of Examples 2 to 5 (in parts by weight, unit: parts)

[0030]

[0031]

[0032] The preparation method of this PVC pipe is the same as that described in Example 1.

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Abstract

The invention discloses a heat-resisting PVC high impact-resisting tubular product and a preparation method thereof, belonging to the field of polymer materials. The tubular product disclosed herein comprises the following ingredients: 70-90 weight parts of PVC resin, 10-30 weight parts of chlorinated polyvinyl chloride (CPVC), 1-3 weight parts of stabilizer, 8-20 weight parts of impact modifier, 1.5-4.0 weight parts of lubricant, 0.2-0.8 weight parts of antioxidant, 0.01-0.10 weight parts of coloring agent, and 1-5 weight parts of filler. According to the invention, by using the heat-resisting modified resin CPVC and the heat-resisting impact modifier, the tubular product disclosed herein is guaranteed to have high impact resistance and simultaneously have high vicat softening temperature; and by using the two-step method of firstly granulation and then extrusion molding, the extrusion speed of the tubular product is greatly raised, the raise of the production efficiency is benefited, and the production cost is low.

Description

Technical field [0001] A heat-resistant PVC high-impact resistant pipe material and a preparation method thereof belong to the field of polymer materials, and specifically relates to a heat-resistant PVC pipe material with good impact resistance performance and a preparation method thereof. Background technique [0002] Modified PVC (PVC-M) pipes are developed on the basis of rigid polyvinyl chloride (PVC-U) pipes. It is characterized by excellent toughness and impact resistance, and can be more Good resistance to minor scratches, point loads and uneven decline of the foundation during pipe installation and transportation; it can also effectively resist water hammer and reduce pipeline damage during operation. It is widely used as a water supply network at home and abroad . [0003] Due to the poor heat resistance of impact modifiers, while improving the impact resistance of PVC pipes, its heat resistance is greatly reduced. The development of heat-resistant PVC high-impact pipes...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08L27/24C08L33/04C08L51/00C08L25/12F16L9/12C08K13/02B29B9/06B29C47/92B29C48/92
CPCB29C48/0022B29C48/04B29C48/40B29C48/92B29C2948/92704B29C2948/92895
Inventor 贾小波张新华李静张桦刘容德刘浩桂俊杰孙培培
Owner CHINA PETROLEUM & CHEM CORP
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