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PVC material and preparation thereof

A technology of PVC material and stabilizer, applied in the field of PVC material and its preparation, can solve the problems of easy thermal decomposition, poor fluidity, secondary pollution of water and other liquids, poor oxidation resistance and acid and alkali resistance, etc. The effect of scaling phenomenon, reduction of raw material cost, and shortening of melting time

Inactive Publication Date: 2009-07-22
黄山琦源塑管阀门有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the materials of water supply pipes and pipe fittings on the market are usually cast iron pipes and galvanized pipes. The oxidation resistance and acid and alkali resistance of pipes and pipe fittings are poor, which easily causes secondary pollution to water and other liquids, and consumes a lot of energy in manufacturing. , high cost of raw materials and complicated recycling of waste products, food hygiene grade hard PVC material (PVC—U) has become a new trend to replace cast iron and galvanized materials, but there are materials that are easy to thermally decompose and have poor fluidity , The acid and alkali resistance, oxidation resistance and aging resistance of the made pipes and parts are poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Take 100 kilograms of PVC-S-60 raw materials, 1.2 kilograms of organotin stabilizer, 0.8 kilograms of calcium stearate, 4 kilograms of chlorinated polyethylene (CPE-135), 1 kilogram of ACR-401, at a temperature of 110 ° C and a rotating speed of Stir for 10 minutes at 400r / min, stop stirring, then add 0.7 kg of diamond-type titanium dioxide ZR—940, 0.52 kg of PE wax CH-4, 0.28 kg of paraffin wax 58#, 0.5 kg of stearic acid, and 0.012 kg of carbon black SB805 , 12 kilograms of active light calcium carbonate, 1 kilogram of epoxy soybean oil, under the situation that temperature is 110 ℃, rotating speed is 500r / min, stir 20 minutes, reduce rotating speed to 200r / min, cool to 45 ℃, discharge .

Embodiment 2

[0046] Take 100 kg of PVC-S-60 raw materials, 1.2 kg of organotin stabilizer, 0.4 kg of calcium stearate, 1 kg of calcium-zinc composite stabilizer, 1.5 kg of chlorinated polyethylene (CPE-135), 1.5 kg of ACR-4011 kg, in When the temperature is 112°C and the rotation speed is 450r / min, stir for 15 minutes, stop stirring, and then add 0.7 kg of diamond-type titanium dioxide ZR-940, 0.52 kg of PE wax CH-4, 0.5 kg of paraffin wax 58#, stearic acid 0.26 kilograms, carbon black SB805 0.016, 6 kilograms of active light calcium carbonate, 3 kilograms of epoxy soybean oil, under the situation that temperature is 112 ℃, rotating speed is 550r / min, stir 25 minutes, reduce rotating speed to 150r / min, Cool to 50°C and discharge.

Embodiment 3

[0048] Take 100 kg of PVC-S-60 raw materials, 1.2 kg of organotin stabilizer, 0.4 kg of calcium stearate, 2 kg of calcium-zinc composite stabilizer, 1.5 kg of chlorinated polyethylene (CPE-135), and 10.8 kg of ACR-40. When the temperature is 115°C and the rotation speed is 500r / min, stir for 10 minutes, stop stirring, and then add diamond-type titanium dioxide ZR-940 0.684 kg, PE wax CH-4 0.3 kg, paraffin wax 58# 0.4 kg, stearic acid 0.2 kilograms, carbon black SB805 0.0156, 4 kilograms of active light calcium carbonate, 3 kilograms of epoxy soybean oil, under the situation that temperature is 115 ℃, rotating speed is 600r / min, stir 25 minutes, reduce rotating speed to 100r / min, Cool to 55°C and discharge.

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PUM

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Abstract

The invention discloses a PVC material and a preparation method thereof. The PVC material comprises the following substances according to parts by weight: 100 parts of PVC, 2-8 parts of stabilizer, 2-6 parts of processing agent, 1.5-2.5 parts of lubricants, 4-12 parts of filler, and 0.05-1 part of colorant. Compared with the prior art, the invention adopts food sanitation-level or nontoxic raw materials; the mobility of the manufactured material is good, and the molding temperature and molding pressure of tubular products and pipe fittings can be reduced, thus preventing the PVC material from pyrolyzing. The PVC-U water supply tubular products, pipe fittings and pressure-proof ball valves made from the material have good acid and alkali resistance, inoxidability and ageing resistance, and the pressure resistance of the pressure-proof ball valve is more than or equal to 2.5MPa (the pressure resistance of similar products is only more than 1.6MPa), thus fully meeting food and chemical use requirements.

Description

technical field [0001] The invention belongs to a PVC material and a preparation method thereof, in particular to a food hygiene grade rigid PVC material and a preparation method thereof. Background technique [0002] At present, the materials of water supply pipes and pipe fittings on the market are usually cast iron pipes and galvanized pipes. The oxidation resistance and acid and alkali resistance of pipes and pipe fittings are poor, which easily causes secondary pollution to water and other liquids, and consumes a lot of energy in manufacturing. , high cost of raw materials and complicated recycling of waste products, food hygiene grade hard PVC material (PVC—U) has become a new trend to replace cast iron and galvanized materials, but there are materials that are easy to thermally decompose and have poor fluidity 1. The acid and alkali resistance, oxidation resistance and aging resistance of the pipes and parts made are poor. Contents of the invention [0003] The tec...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08L23/28C08L33/08C08K13/02C08K5/57C08K5/098C08K5/15C08K5/09C08K3/04C08K3/22C08K3/26
Inventor 王玉书吴士范
Owner 黄山琦源塑管阀门有限公司
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