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A kind of oil-resistant and cold-resistant PVC transparent granular material and preparation method thereof

A cold-resistant and transparent technology, applied in the field of PVC transparent pellets, can solve the problems of lower soft temperature, poor compatibility, and failure to use normally, and achieve the effects of improved low-temperature flexibility, good oil resistance and low temperature resistance

Active Publication Date: 2016-08-24
XIAMEN GANGGUANG PLASTIC IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the relatively high glass transition temperature of polyvinyl chloride, the flexibility of PVC materials is very sensitive to changes in temperature. Materials that can be used normally at room temperature will become hard and cannot be used normally at low temperatures. For example, the current use of polyvinyl chloride The oil-resistant hose made of ester plasticizer plasticized PVC has hardened at around 0°C and cannot be used normally
The softening temperature of PVC materials modified by polyurethane polar nucleic acids is reduced, but because of the poor compatibility of polyurethane polar nucleic acids and polyvinyl chloride, the difference in refractive index is large, so that the modified PVC materials cannot achieve the desired transparency

Method used

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  • A kind of oil-resistant and cold-resistant PVC transparent granular material and preparation method thereof
  • A kind of oil-resistant and cold-resistant PVC transparent granular material and preparation method thereof
  • A kind of oil-resistant and cold-resistant PVC transparent granular material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Add the polyvinyl chloride resin powder into the high-speed heat sealing machine, and add polyethylene glycol difatty acid ester, polyester plasticizer, and mercaptan methyl tin evenly and slowly in 2 times, so that the PVC resin powder is fully absorbed, and the interval is 2 minutes to ensure that Uniform absorption, when the polyethylene glycol difatty acid ester, polyester plasticizer, and mercaptan methyl tin are fully absorbed by the PVC resin powder, the speed of the high-speed heat sealing machine is 1300rpm, and the temperature is 90°C. agent, stirred to 120°C. The whole process lasts 18 minutes, then put it into a low-speed cooling mixer for 8 minutes to 50°C, and send it into a twin-screw extrusion granulator for granulation to obtain oil-resistant and cold-resistant PVC transparent granules.

[0017] The composition of oil-resistant and cold-resistant PVC transparent pellets by mass ratio is:

[0018]

[0019] The performance test results are as follows:...

Embodiment 2

[0025] Add the polyvinyl chloride resin powder into the high-speed heat-sealing machine, add polyethylene glycol difatty acid ester, polyester plasticizer, and mercaptan methyl tin evenly and slowly in 3 times, so that the PVC resin powder is fully absorbed, and the interval is 3 minutes to ensure that Uniform absorption, when the polyethylene glycol di-fatty acid ester, polyester plasticizer, and mercaptan methyl tin are fully absorbed by the PVC resin powder, the speed of the high-speed heat sealing machine is 1500rpm, and the temperature is 85°C. agent, stirred to 120°C. The whole process lasts 16 minutes, then put it into a low-speed cooling mixer for 12 minutes to 50°C, and send it into a twin-screw extrusion granulator for granulation to obtain oil-resistant and cold-resistant PVC transparent granules.

[0026] The composition of oil-resistant and cold-resistant PVC transparent pellets by mass ratio is:

[0027]

[0028] The performance test results are as follows: ...

Embodiment 3

[0033] Add the polyvinyl chloride resin powder into the high-speed heat-sealing machine, add polyethylene glycol difatty acid ester, polyester plasticizer, and mercaptan methyl tin evenly and slowly in 4 times, so that the PVC resin powder is fully absorbed, and the interval is 1min to ensure that Uniform absorption, when polyethylene glycol difatty acid ester, polyester plasticizer, and mercaptan methyl tin are fully absorbed by PVC resin powder, the speed of the high-speed heat sealing machine is 1600rpm, and the temperature is 95°C, add modified glue and auxiliary agent, stirred to 120°C. The whole process lasts 20 minutes, then put it into a low-speed cooling mixer for 10 minutes to 50°C, and send it into a twin-screw extrusion granulator for granulation to obtain oil-resistant and cold-resistant PVC transparent granules.

[0034] The composition of oil-resistant and cold-resistant PVC transparent pellets by mass ratio is:

[0035]

[0036] The performance test results...

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Abstract

The invention discloses an oil-resisting cold-resisting PVC (Polyvinyl Chloride) transparent aggregate and a preparation method thereof, and relates to a PVC transparent aggregate. The oil-resisting cold-resisting PVC transparent aggregate comprises the following components in parts by weight: 100 parts of polyvinyl chloride, 30-50 parts of polyethylene glycol dialiphatic ester, 30-60 parts of polyester plasticizer, 20-40 parts of modified glue and 4-6 parts of additive. The preparation method comprises the following steps: adding polyvinyl chloride resin powder into a heat-sealing machine, further adding the polyethylene glycol dialiphatic ester, the polyester plasticizer and mercaptan methyl tin, enabling the PVC resin powder to sufficiently absorb the components, subsequently adding the modified glue and the additive, stirring, subsequently feeding the mixture into a pelletizer and pelletizing so as to obtain the oil-resisting cold-resisting PVC transparent aggregate. The prepared oil-resisting cold-resisting PVC transparent aggregate is good in oil resistance and low temperature resistance, after the aggregate is soaked in isooctane at a temperature of 20 DEG C for 10 days, the weight loss ratio is less than 2%, the low-temperature soft temperature is less than minus 18 DEG C, and the aggregate can be used for producing polyvinyl chloride oil-resisting cold-resisting transparent hoses.

Description

technical field [0001] The invention relates to PVC transparent pellets, in particular to an oil-resistant and cold-resistant PVC transparent pellet and a preparation method thereof. Background technique [0002] Polyvinyl chloride (PVC) resin material has excellent mechanical properties, transparency and oil resistance, so it is used to manufacture transparent oil-resistant pipes, rubber ropes, glue sticks, etc. Due to the relatively high glass transition temperature of polyvinyl chloride, the flexibility of PVC materials is very sensitive to changes in temperature. Materials that can be used normally at room temperature will become hard and cannot be used normally at low temperatures. For example, the current use of polyvinyl chloride The oil-resistant hose made of ester plasticizer plasticized PVC has hardened at around 0°C and cannot be used normally. The softening temperature of PVC materials modified by polyurethane polar nucleic acids is reduced, but because of the p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/06C08L67/02C08L23/08C08K5/103
Inventor 洪铮
Owner XIAMEN GANGGUANG PLASTIC IND CO LTD