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High-performance modified polyvinyl chloride and preparation method thereof

A polyvinyl chloride, high-performance technology, applied in the field of polymers, can solve the problems of limiting the use range and space of polyvinyl chloride, poor impact strength, affecting resin aging resistance and thermal stability, etc., to overcome some properties Effects of deterioration, improvement of impact resistance, and improvement of mechanical properties

Active Publication Date: 2018-09-18
河北杰帝奇体育用品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, polyvinyl chloride molecules contain a large number of C-Cl bonds, and there is a large force between the molecules, so it is relatively hard, showing a certain degree of brittleness to the outside, and its impact strength is poor. In addition, the C-Cl in its molecules The bonds are easy to remove HCl molecules when heated, and unsaturated bonds are introduced into the macromolecular chain, which affects the aging resistance and thermal stability of the resin, thus limiting the scope and space of use of polyvinyl chloride

Method used

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  • High-performance modified polyvinyl chloride and preparation method thereof

Examples

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preparation example Construction

[0027] A kind of preparation method of above-mentioned high-performance modified polyvinyl chloride is characterized in that, comprises the following steps:

[0028] (1) Weigh PVC, partially cross-linked nitrile rubber, compound filler, modified calcium polyphosphate, plasticizer, antioxidant, lubricant according to the formula, and put it into the mixer and stir for 1-3 Minutes to get mixed raw materials;

[0029] (2) Put the mixed raw material in step 2 and the mixing product in step 1 into a twin-screw extruder for reaction, and the material stays in the barrel for 1-2 minutes to obtain a reaction product. The twin-screw extruder The temperature of each zone is as follows: Zone 1 180-200℃, zone 2 200-220℃, zone 3 200-220℃, zone 4 200-220℃, zone 5 200-220℃, zone 6 200-220℃, zone 7 200- 220°C, eighth zone 200-220°C, nine zone 200-220°C, machine head 200-210°C.

[0030] (3) Cut the reaction product into pellets and dry to obtain the finished product.

Embodiment 1

[0032] The high-performance modified polyvinyl chloride is characterized in that, in parts by mass, it includes the following raw materials: 100 parts of PVC, 20 parts of partially cross-linked nitrile rubber, 7.5 parts of compound filler, 7.5 parts of modified calcium polyphosphate, and 5 parts plasticizer, 2 parts antioxidant, 3 parts lubricant.

[0033] The gel mass percentage of the cross-linked nitrile rubber is 50%. The composite filler is obtained by immersing the hollow structural fiber in hydroxyl silicone oil and ultrasonically vibrating for 10 minutes, followed by filtration. The hollow structural fibers are nylon 66 chopped fibers with a hollowness of 15%. The plasticizer is DOP. The compounding mass ratio of calcium polyphosphate and silane coupling agent in the modified calcium polyphosphate is 100:7.5. Described antioxidant is antioxidant 1010. Described lubricant is polyethylene wax.

[0034] A kind of preparation method of above-mentioned high-performance...

Embodiment 2

[0039] The high-performance modified polyvinyl chloride is characterized in that, in parts by mass, it includes the following raw materials: 100 parts of PVC, 25 parts of partially cross-linked nitrile rubber, 5 parts of compound filler, 10 parts of modified calcium polyphosphate, and 4 parts of plasticizer, 3 parts of antioxidant, 2 parts of lubricant.

[0040] The gel mass percentage of the cross-linked nitrile rubber is 60%. The composite filler is obtained by immersing the hollow structural fiber in hydroxyl silicone oil and ultrasonically vibrating for 5 minutes, followed by filtration. The hollow structural fibers are nylon 66 chopped fibers with a hollowness of 20%. The plasticizer is DOP. The compounding mass ratio of calcium polyphosphate and silane coupling agent in the modified calcium polyphosphate is 100:5. Described antioxidant is antioxidant 1010. Described lubricant is polyethylene wax.

[0041] The preparation method is the same as in Example 1.

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Abstract

The invention discloses high-performance modified polyvinyl chloride and a preparation method thereof. The high-performance modified polyvinyl chloride comprises the following raw materials: PVC, partially crosslinked nitrile rubber, a compound filling agent, modified calcium polyphosphate, a plasticizer, an antioxidant and a lubricant. The high-performance modified polyvinyl chloride provided bythe invention has the following advantage: through addition of the partially crosslinked nitrile rubber, the compound filling agent and the modified calcium polyphosphate, mechanical properties of polyvinyl chloride are further balanced and improved.

Description

technical field [0001] The invention belongs to the technical field of polymers, and in particular relates to a high-performance modified polyvinyl chloride and a preparation method thereof. Background technique [0002] Polyvinyl chloride is one of the earliest industrialized plastic varieties in the world. It is a general-purpose resin with excellent performance and low price. It has excellent flame retardancy, corrosion resistance, wear resistance, small friction coefficient, low thermal conductivity, and sealing performance. Good, dustproof, sound insulation, earthquake resistance, weather resistance and other advantages, it has a wide range of applications in construction, light industry, agriculture, packaging, daily use and other fields. However, polyvinyl chloride molecules contain a large number of C-Cl bonds, and there is a large force between the molecules, so it is relatively hard, showing a certain degree of brittleness to the outside, and its impact strength is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L9/02C08L77/06C08L83/04C08K9/06C08K3/32
CPCC08K2003/325C08L27/06C08L2205/16C08L9/02C08L77/06C08L83/04C08K9/06C08K3/32
Inventor 姜丽丽
Owner 河北杰帝奇体育用品有限公司