Ash content standard product of PP (polypropylene) base material as well as preparation method and application of ash content standard product

A standard product and ash content technology, which is applied to the ash content standard product of PP base material and its preparation field, can solve the problems that modified plastics cannot be directly applied, and does not meet the requirements of ash content detection, etc., and achieves balanced performance, easy acquisition and simple preparation. Effect

Pending Publication Date: 2022-05-24
NAT POLYMER MATERIALS IND INNOVATION CENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these standard samples cannot be directly applied to the modified plastics industry
This is due to the fact that the absolute difference of the test results of the same sample does not exceed 5% of the arithmetic mean when the food ash standard sample is tested, and it is necessary to prepare and add different chemical solvents to complete the determination of the ash content in the food ash test. This actually does not meet the requirements of ash detection in polymer materials

Method used

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  • Ash content standard product of PP (polypropylene) base material as well as preparation method and application of ash content standard product
  • Ash content standard product of PP (polypropylene) base material as well as preparation method and application of ash content standard product
  • Ash content standard product of PP (polypropylene) base material as well as preparation method and application of ash content standard product

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] An ash content standard product of a PP base material, comprising the following preparation steps:

[0039] (1) taking by weighing the parts by weight is 93.9 parts of PP resin, 5 parts of one-dimensional fillers, 1 part of antioxidant and 0.1 part of dispersant raw materials, and the total weight is 3kg, and the raw materials are mainly fed into the high-speed mixer and mixed;

[0040] (2) The mixed material is extruded and granulated through a twin-screw extruder, the temperature of the extruder is set to 210 °C, the finished product is granulated into a vacuum drying box, and dried for 4 hours at a drying temperature of 70 °C , and then take it out and store it in a bag to obtain an ash standard product;

[0041] Among them, the PP resin is a copolymerized PP resin, and the melt flow rate is 20-25g / 10min under the condition of 230℃ / 2.16kg; the one-dimensional filler can be barium sulfate, talc, mica powder or montmorillonite, in this embodiment It is preferably bari...

Embodiment 2

[0052] An ash content standard product of a PP base material, comprising the following preparation steps:

[0053] (1) take by weighing 73.7 parts of PP resins, 25 parts of one-dimensional fillers, 0.8 parts of antioxidants and 0.5 parts of dispersant raw materials, the total weight is 3kg, and the raw materials are mainly fed into the high-speed mixer and mixed;

[0054] (2) The mixed material is extruded and granulated through a twin-screw extruder, the temperature of the extruder is set to 190 ° C, the finished product is granulated into a vacuum drying box, and dried for 2 hours at a drying temperature of 90 ° C , and then take it out and store it in a bag to obtain an ash standard product;

[0055] Among them, the PP resin is a homopolymerized PP resin, and the melt flow rate is 10-20g / 10min under the condition of 230℃ / 2.16kg; the one-dimensional filler can be barium sulfate, talcum powder, mica powder or montmorillonite, in this implementation In the example, barium sul...

Embodiment 3

[0066] An ash content standard product of a PP base material, comprising the following preparation steps:

[0067] (1) Weigh 68.7 parts of PP resin, 30 parts of two-dimensional fillers, 0.7 parts of antioxidant and 0.6 parts of dispersant raw materials, the total weight is 3kg, and the PP resin, antioxidant and dispersant raw materials are fed into the main feed Mix in a high-speed mixer, and feed the two-dimensional filler into the high-speed mixer for mixing;

[0068] (2) The mixed material is extruded and granulated through a twin-screw extruder, the temperature of the extruder is set to 190 ° C, the finished product is granulated into a vacuum drying box, and dried for 2 hours at a drying temperature of 90 ° C , and then take it out and store it in a bag to obtain an ash standard product;

[0069] Among them, the PP resin is a copolymerized PP resin, and the melt flow rate is 20-25g / 10min under the condition of 230℃ / 2.16kg; the two-dimensional filler can be chopped glass ...

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Abstract

The invention discloses an ash content standard product of a PP base material and a preparation method and application thereof, and relates to the field of plastic analysis. The ash content standard product comprises PP resin, a filler, an antioxidant and a dispersing agent; the filler is one-dimensional filler or two-dimensional filler, and the one-dimensional filler comprises one or more of barium sulfate, talcum powder, mica powder and montmorillonite; the two-dimensional filler comprises chopped glass fibers and / or long glass fibers. According to the ash content standard substance, the formula is improved from the detection accuracy and the uniformity and stability of a sample, the ash content standard substance capable of meeting different temperatures and different mass fraction calcination ranges is obtained, and the uniformity and stability required by the CNAS-GL032: 2018 standard are met; the PP base material ash content standard sample is completely different from a food ash content detection standard sample on the market at present, and the vacancy that no ash content standard sample exists in the plastic industry is filled.

Description

technical field [0001] The invention relates to the field of plastic analysis, in particular to an ash content standard product of PP base material and a preparation method and application thereof. Background technique [0002] Plastics have been widely used in various fields such as agriculture, industry, construction, packaging, defense cutting-edge industries, and people's daily lives. With the rapid development of society and economy, people's demand for plastic products is also increasing, and the accompanying problems such as cost reduction, environmental protection, and recycling of plastic products are also increasingly emerging, and the corresponding testing requirements are becoming more and more strict. [0003] The ash content in plastics is one of the important basis for controlling the quality of plastic finished or semi-finished products. Usually, when the material is abnormal, an ash test is first performed to determine whether there is any doping. For examp...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L23/14C08K3/30C08K7/14G01N1/38
CPCC08K3/30C08K7/14G01N1/38C08K2003/3045C08K2201/005C08L23/14C08L23/12Y02W30/62
Inventor徐晓慧李贵阳张云桐吴博庞承焕李卫领袁涛宁红涛
OwnerNAT POLYMER MATERIALS IND INNOVATION CENT CO LTD