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Modified calcium carbonate filled PVC tubular product and preparation method thereof

A PVC pipe, calcium carbonate technology, applied in pipeline protection, mechanical equipment, pipeline damage/wear prevention, etc., can solve problems such as poor adhesion between the matrix and filler interface, low mechanical strength of PVC pipes, and shortened pipe service life. , to achieve the effect of good stability, not easy to deform, and improve the notched impact strength

Inactive Publication Date: 2018-09-07
钦州市宝业坭兴陶厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the current method of modifying nano-calcium carbonate, the main surface treatment agent is usually fatty acid or its salt. Although the dispersion and processing fluidity of the system have been improved, it is difficult to effectively combine PVC resin with nano-calcium carbonate filler. , resulting in poor interface bonding between the matrix and the filler, resulting in low mechanical strength of the PVC pipe
Secondly, the existing PVC pipes also have problems such as poor heat resistance and impact resistance, and are prone to aging, deformation, and brittleness under light conditions, which shortens the service life of the pipes.

Method used

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  • Modified calcium carbonate filled PVC tubular product and preparation method thereof

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Effect test

Embodiment 1

[0034] A modified calcium carbonate filled PVC pipe, comprising the following raw materials in parts by weight: 100 parts of PVC resin, 8 parts of bismaleimide, 3 parts of acrylic acid-maleic anhydride copolymer, polyaminopropylmethyl sesqui 2.5 parts of siloxane, 1.5 parts of castor oil maleate, 25 parts of modified nano calcium carbonate, 4 parts of asbestos fiber, 2.5 parts of coupling agent, 1 part of crosslinking agent, 1 part of 1010 antioxidant, organic tin stabilizer 1.2 parts, 1.5 parts of antibacterial agent and 4 parts of processing aid.

[0035] The preparation of described modified calcium carbonate comprises the steps:

[0036] (1) Put quicklime and 60°C hot water into the digestion reactor according to the mass ratio of 1:5 to carry out digestion reaction, remove impurities, stand and age for 48 hours, and dilute to a specific gravity of 1.060 to obtain lime emulsion;

[0037] (2) Transport the lime emulsion to the carbonation reaction tower, feed carbon dioxid...

Embodiment 2

[0046] A modified calcium carbonate filled PVC pipe, comprising the following raw materials in parts by weight: 100 parts of PVC resin, 6 parts of bismaleimide, 4 parts of acrylic acid-maleic anhydride copolymer, polyaminopropylmethyl sesqui 1.5 parts of siloxane, 1 part of castor oil maleate, 20 parts of modified nano calcium carbonate, 3 parts of asbestos fiber, 1 part of coupling agent, 1.5 parts of crosslinking agent, 1.5 parts of 1076 antioxidant, organic tin stabilizer 0.8 parts, 2 parts of antibacterial agent and 3.5 parts of processing aid.

[0047] The preparation of described modified calcium carbonate comprises the steps:

[0048] (1) Put quicklime and 70°C hot water into the digestion reactor according to the mass ratio of 1:4 to carry out digestion reaction, remove impurities, stand and age for 36 hours, and dilute to a specific gravity of 1.065 to obtain lime emulsion;

[0049] (2) Transport the lime emulsion to the carbonation reaction tower, feed carbon dioxid...

Embodiment 3

[0058] A modified calcium carbonate filled PVC pipe, comprising the following raw materials in parts by weight: 100 parts of PVC resin, 7 parts of bismaleimide, 5 parts of acrylic acid-maleic anhydride copolymer, polyaminopropylmethyl sesqui 3 parts of siloxane, 1.5 parts of castor oil maleate, 30 parts of modified nano calcium carbonate, 4 parts of asbestos fiber, 2.5 parts of coupling agent, 1.2 parts of crosslinking agent, 0.8 parts of 1010 antioxidant, calcium zinc stabilizer 1.2 parts, 1 part of antibacterial agent and 5 parts of processing aid.

[0059] The preparation of described modified calcium carbonate comprises the steps:

[0060] (1) Put quicklime and 60°C hot water into the digestion reactor according to the mass ratio of 1:6 to carry out digestion reaction, remove impurities, stand and age for 30 hours, and dilute to a specific gravity of 1.070 to obtain lime emulsion;

[0061] (2) Transport the lime emulsion to the carbonation reaction tower, feed carbon diox...

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Abstract

The invention discloses a modified calcium carbonate filled PVC tubular product and a preparation method thereof. The PVC tubular product contains the following raw materials in parts by weight: 100 parts of PVC resin, 5-10 parts of bismaleimide, 3-5 parts of an acrylic acid-maleic anhydride copolymer, 1-3 parts of polyurethane propyl methyl semisiloxane, 1-2 parts of maleic acid ricinoleate, 15-30 parts of modified nano-calcium carbonate, 3-5 parts of asbestos fibers, 1-3 parts of a coupling agent, 0.5-2 parts of a cross-linking agent, 0.5-1.5 parts of an antioxidant, 0.5-1.5 parts of a stabilizer, 1-2 parts of an antibacterial agent and 3-5 parts of a processing aid. By virtue of a special raw material formula and the coordination effect of the components, the PVC tubular product provided by the invention has the advantages of high strength and tenacity, strong shock resistance, heat resistance, strong bacteriostatic and antibacterial effects, ageing resistance, good stability and the like and is unlikely to be deformed, a processing process is simple, and the PVC tubular product is relatively low in cost and has wide market prospects.

Description

technical field [0001] The invention relates to the technical field of plastic pipes, in particular to a modified calcium carbonate-filled PVC pipe and a preparation method thereof. Background technique [0002] PVC pipe has the characteristics of strong corrosion resistance, high strength, and good rigidity. Therefore, it is widely used in construction, municipal, In the field of industry and agriculture, it is a plastic pipe whose scope of application is second only to polyethylene. However, due to the poor heat resistance and impact resistance of PVC resin itself, the plastic pipes made of PVC resin also have poor heat resistance, and are prone to aging, deformation, and brittleness under light conditions, which shortens the life of the pipe. service life. [0003] Nano-calcium carbonate is a very important new functional nano-scale filler with excellent performance in industrial calcium carbonate. It can not only increase the filling capacity and reduce the cost, but a...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08L33/02C08L83/08C08L91/00C08L3/06C08L5/08C08K13/06C08K9/06C08K9/04C08K3/26C08K7/12C08K3/22F16L57/02F16L57/04F16L57/06F16L58/10
CPCC08K2003/2213C08K2003/265C08K2201/006C08K2201/011C08L27/06C08L2201/02C08L2201/08C08L2203/18C08L2205/035F16L57/02F16L57/04F16L57/06F16L58/10C08L33/02C08L83/08C08L91/00C08L3/06C08L5/08C08K13/06C08K9/06C08K9/04C08K3/26C08K7/12C08K3/22
Inventor 施宝业
Owner 钦州市宝业坭兴陶厂
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