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Polyester chip masterbatch for blood sampling tube, preparation method and application

A technology of polyester chips and masterbatches, applied in applications, blood sampling devices, sensors, etc., can solve problems such as unsatisfactory melt fluidity, achieve high yield, stable product quality, and increase the effect of melt flow rate

Inactive Publication Date: 2017-04-26
CHINA RESOURCES PACKAGING MATERIALS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The fluidity of polyester (PET) melt can be improved by increasing the melt temperature and injection pressure, but for thin-walled products, ordinary polyester (PET) materials can no longer meet their melt fluidity by adjusting the processing temperature and pressure needs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0019] Polyethylene glycol with a molecular weight of 2000 and Dow Corning silicone resin (FCA107) are ground into a powder with a fineness of 30-40 mesh, and then mixed evenly with a high-speed mixer. The weight ratio of the two is poly Ethylene glycol: Dow Corning silicone resin = 10:1; add the above-mentioned mixed additives to the powder weight loss scale, and add polyester chips with a viscosity of 0.60dl / g to a pellet weight loss scale to control the feeding of the weight loss scale The feed rate of the two powder additives is maintained at 2.5 kg / hour, and the polyester chip is 47.5 kg / hour; the twin-screw extruder uses the SK-53 model produced by Nanjing Keya Machinery, and the screw temperature of each section is set Respectively 20℃, 20℃, 200℃, 235℃, 235℃, 240℃, 245℃, 245℃, 240℃, 240℃, 238℃, 238℃, the screw speed is set to 600rpm; the materials are mixed in the screw Uniformly extruded into strips, cooled in a water tank, and the cooling water temperature is 25℃; Afte...

example 2

[0022] Use a pulverizer to grind pentaerythritol stearate (TA-401) and Dow Corning silicone resin (FCA107) into powder with a fineness of 30-40 mesh, and then use a high-speed mixer to mix them evenly. The weight ratio of the two Pentaerythritol stearate: Dow Corning silicone resin = 10:1; add the mixed additives to the powder weight loss scale, and add the polyester chips with a viscosity of 0.60dl / g to a pellet weight loss scale to control the weight loss The feeding speed is maintained at 3 kg / h for the two powder additives and 47 kg / h for polyester chips; the twin-screw extruder uses the SK-53 type produced by Nanjing Keya Machinery, and the screw temperature of each section is set Set respectively as 20℃, 20℃, 200℃, 235℃, 235℃, 240℃, 245℃, 245℃, 240℃, 240℃, 238℃, 238℃, the screw speed is set to 600rpm; the material is in the screw The mixture is uniformly extruded into strips, which are cooled in a water tank, and the cooling water temperature is 25°C. After cooling and f...

example 3

[0025] Zinc stearate and Dow Corning silicone resin (FCA107) are ground into powder with a milling machine, with a fineness of 30-40 mesh, and then mixed evenly with a high-speed mixer. The weight ratio of the two is zinc stearate : Dow Corning silicone resin = 10:1. Add the above mixed additives to the powder weight loss scale, add the polyester chips with a viscosity of 0.60dl / g to a pellet weight loss scale, control the feeding speed of the weight loss scale to keep the two powder additives at 2 Kg / hour, polyester chip is 48 kg / hour; twin screw extruder uses the SK-53 type produced by Nanjing Keya Machinery, the screw temperature of each section is set at 20℃, 20℃, 200℃, 235℃ , 235℃, 240℃, 245℃, 245℃, 240℃, 240℃, 238℃, 238℃, the screw speed is set to 600rpm; the materials are mixed and extruded uniformly in the screw into strips, and then cooled by the water tank. The water temperature is 25°C. After cooling and forming, the material strips are dried by a blower to remove ...

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PUM

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Abstract

The invention relates to polyester chip masterbatch for a blood sampling tube. The polyester chip masterbatch contains a polyethylene glycol terephthalate slice and is characterized in that the polyethylene glycol terephthalate slice further contains a rheology modifier and a rheology modification accelerant, wherein the rheology modifier is polyester polyol or / and stearate or / and montanic acid and their derivatives (soap and ester) or / and polyethylene glycol, the rheology modifier accounts for 1-10% of the weight of the whole material, and the rheology modification accelerant is organic silicon resin and accounts for 0.1-1% of the weight of the whole material. The invention further relates to a preparation method and application of the polyester chip masterbatch for the blood sampling tube. The polyester chip masterbatch has the advantages that the melt fluidity of the polyester chip masterbatch for the blood sampling tube is improved.

Description

Technical field [0001] The invention relates to a polyester chip for blood collection tube, in particular to a polyester chip master batch for blood collection tube, a preparation method and application. Background technique [0002] Polyester is a general term for thermoplastic linear saturated polyester represented by polyethylene terephthalate (PET). One of its important uses is in the field of food packaging. When used as a food packaging material, PET can be made into two-way stretch packaging film, and it can also be made into an amorphous preform and then blow molded to obtain a high-strength, high-transparent stretch blow-molded bottle, or it can be directly extruded into a sheet The material is then thermoformed to make a hollow container. PET products have the properties of transparency, oil resistance, fragrance retention, sanitation and reliability, and wide operating temperature range, so the amount in the packaging field is increasing. [0003] The application and g...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L71/02C08L83/06C08K5/103C08K5/098A61B5/15
CPCC08L67/02A61B5/150343C08L2203/18C08L2205/03C08L71/02C08L83/06C08K5/103C08K5/098
Inventor 朱振达宗建平陈小雷陈国康张剑敏
Owner CHINA RESOURCES PACKAGING MATERIALS CO LTD
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