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Composition of low-temperature resisting PVC composite hosepipe, and preparation method thereof

A technology of composite hose and low temperature resistance, which is applied in the direction of hoses, pipes, mechanical equipment, etc., can solve the problems of poor anti-aging performance, low toughness, high brittleness, etc., and achieve anti-aging, good comprehensive performance, and enhanced low temperature resistance performance effect

Inactive Publication Date: 2012-04-04
常熟市星源金属涂层厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The polyvinyl chloride hose in the prior art, the commonly used PVC hose has poor low temperature resistance, high brittleness, low toughness, poor aging resistance, low safety performance, inconvenient transportation and installation, high manufacturing cost, and cannot reach production and living requirements
In the prior art, there is mentioned a combination house of nano-calcium carbonate modified spirally wound PVC hose for sanitary ware and its preparation method, but the hose made of this material has better heat resistance and poor low temperature resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] (1) Preparation of modified nano-scale calcium carbonate: Weigh 80% of nano-scale calcium carbonate, TO ~ 410%, 6% of paraffin wax and 0.2% of oxidized polyethylene wax as raw materials. First, put the nano-scale calcium carbonate weighed according to the proportion Dry in a hot oven at 100°C for 2 hours, cool to room temperature, take it out, add it to a high-speed mixer and stir for 5 minutes, then add the weighed TO~4 and stir for 8 minutes, then add the weighed paraffin wax and oxidized polyethylene in turn Wax, heated and stirred to 60-80°C, then transferred to a cold mixer, stirred and cooled to less than 40°C, and discharged to obtain modified nano-scale calcium carbonate;

[0020] (2) 80 parts by weight of PVC-SG2 type PVC resin, 80 parts of thermoplastic polyurethane elastomer, 30 parts of dioctyl phthalate, 2 parts of isooctyl tin dimethyl dimercaptoacetate, 1.5 parts of stearic acid, Add 10 parts of modifier, 1 part by weight of processing aid, 10 parts of ca...

Embodiment 2

[0023] (1) Preparation of modified nano-scale calcium carbonate: Weigh 83% of the raw material nano-scale calcium carbonate, 5% of titanate coupling agent, 4% of stearic acid and 1% of EVA wax. Grade calcium carbonate was dried in a hot oven at 100°C for 2 hours, cooled to room temperature, taken out, added to a high-speed mixer and stirred for 5 minutes, then added the weighed titanate coupling agent and stirred for 8 minutes, and then sequentially Add the weighed stearic acid and EVA wax, heat and stir to 60-80°C, then transfer to a cold mixer, stir and cool to less than 40°C, and discharge to obtain modified nano-scale calcium carbonate;

[0024] (2) 85 parts by weight of PVC-SG3 type PVC resin, 65 parts of thermoplastic polyurethane elastomer, 32 parts of dibutyl phthalate, 3 parts of di-n-butyltin dilaurate, 0.5 parts of paraffin, 12 parts of modifier, Add 1 part of processing aid, 11 parts of graphite, 16 parts of organic flame retardant and 10 parts of modified nano-sca...

Embodiment 3

[0027] (1) Preparation of modified nano-scale calcium carbonate: Weigh 85% of the raw material nano-scale calcium carbonate, 7% of aluminate coupling agent, 3% of oxidized polyethylene and 4% of ethylene bis stearic acid amide, and first Put the weighed nano-scale calcium carbonate in a hot oven at 100°C for 2 hours, cool to room temperature, take it out, add it to a high-speed mixer and stir for 5 minutes, then add the weighed aluminate coupling agent and stir again After 8 minutes, add the weighed oxidized polyethylene and ethylene bis stearic acid amide in turn, heat and stir to 60-80°C, then transfer to a cold mixer, stir and cool to less than 40°C, and discharge to obtain modified nano-scale calcium carbonate;

[0028] (2) 95 parts by weight of PVC-SG4 type PVC resin, 75 parts of thermoplastic polyurethane elastomer, 35 parts of ethylene glycol butyl phthalate, 4 parts of cadmium stearate, 1 part of chlorinated paraffin, 14 parts of modifier part, 2 parts by weight of pr...

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Abstract

The invention relates to a low-temperature resisting PVC composite hosepipe comprising components of, by weight: 80-100 parts of PVC resin, 60-80 parts of thermoplastic polyurethane elastomer, 30-40 parts of a plasticizer, 2-5 parts of a thermal stabilizer, 0.2-1.5 parts of a lubricant, 10-15 parts of a modifier, 1-3 parts of a processing auxiliary agent, 10-15 parts of an antistatic agent, 5-20 parts of a fire retardant, and 5-20 parts of modified nano-grade calcium carbonate. According to the invention, thermoplastic polyurethane elastomer, the plasticizer, the thermal stabilizer, the antistatic agent and the fire retardant are added to PVC resin, such that the low-temperature resistance, the flexibility, the antistatic performance and the fire retardance of the PVC hosepipe are enhanced. The comprehensive performance of the prepared PVC composite hosepipe is good, and the PVC composite hosepipe is not easily aged. Therefore, the PVC composite hosepipe can be applied in storage and application processes of low-temperature oil, gas or liquid.

Description

technical field [0001] The invention relates to a PVC hose, in particular to a composition of a low-temperature-resistant PVC composite hose and a preparation method thereof. Background technique [0002] Polyvinyl chloride (PVC) is light yellow translucent and shiny. Transparency is better than polyethylene and polystyrene, worse than polystyrene. Depending on the amount of additives, it can be divided into soft and hard PVC. Soft products are soft and tough, and feel sticky, and hard products have higher hardness than low-density polyethylene. , and lower than polypropylene, there will be whitening at the inflection. The performance of polyvinyl chloride is relatively stable, it is not easy to be corroded by acid and alkali, and it is relatively resistant to heat; it has the advantages of flame retardancy, high chemical resistance, high mechanical strength and electrical insulation performance. [0003] Polyvinyl chloride (PVC) is used to manufacture various soft and har...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L75/04F16L11/04C08K13/06C08K9/04C08K3/26B29C43/00B29B7/56
Inventor 顾丹
Owner 常熟市星源金属涂层厂
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