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Flexible toothbrush handle polypropylene material and preparation method thereof

A polypropylene material and toothbrush handle technology, applied in the field of polypropylene materials, can solve the problems of brittle toothbrush handles and easy breakage, and achieve the effects of excellent balance between rigidity and toughness, little change in toughness, and simple manufacturing process

Inactive Publication Date: 2019-04-05
SINOPEC YANGZI PETROCHEM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Toothbrush handles made of general-purpose polypropylene are brittle and prone to breakage

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A toothbrush handle made of flexible polypropylene material. The components and weight percentage of the toothbrush handle are: random copolymer polypropylene 90%, calcium carbonate 8%, color masterbatch 2%, calcium carbonate 200 mesh.

[0017] (1) First put the random copolymerized polypropylene, calcium carbonate and color masterbatch into the high-speed mixer and stir evenly for 10 minutes, and the speed of the high-speed mixer is 800 rpm;

[0018] (2) Put the mixture obtained above into an injection molding machine for injection molding. The temperature of the injection molding machine is 210° C. After taking out the product, remove the head and carry out air cooling for 2 hours, and finally obtain the product toothbrush handle.

[0019] The powder mixed in step (1) is made into a national standard (GB / T9341-2008) sample, and its flexural modulus is 986MPa measured in a standard laboratory, and its impact resistance at room temperature is 20.8kJ / m 2 .

Embodiment 2

[0021] A toothbrush handle made of flexible polypropylene material. The components and weight percentage of the toothbrush handle are: random copolymer polypropylene 80%, calcium carbonate 18%, color masterbatch 2%, calcium carbonate 500 mesh.

[0022] (1) First put the random copolymerized polypropylene, calcium carbonate and color masterbatch into the high-speed mixer and stir evenly for 10 minutes, and the speed of the high-speed mixer is 800 rpm;

[0023] (2) Put the mixture obtained above into an injection molding machine for injection molding. The temperature of the injection molding machine is 210° C. After taking out the product, remove the head and carry out air cooling for 2 hours, and finally obtain the product toothbrush handle.

[0024] The powder mixed in step (1) is made into a national standard (GB / T9341-2008) sample, and its flexural modulus is 1020MPa measured in a standard laboratory, and its impact resistance at room temperature is 20.2kJ / m 2 .

Embodiment 3

[0026] A toothbrush handle made of flexible polypropylene material. The components and weight percentage of the toothbrush handle are: random copolymer polypropylene 70%, calcium carbonate 28%, color masterbatch 2%, calcium carbonate 1000 mesh.

[0027] (1) First put the random copolymerized polypropylene, calcium carbonate and color masterbatch into the high-speed mixer and stir evenly for 10 minutes, and the speed of the high-speed mixer is 800 rpm;

[0028] (2) Put the mixture obtained above into an injection molding machine for injection molding. The temperature of the injection molding machine is 210° C. After taking out the product, remove the head and carry out air cooling for 2 hours, and finally obtain the product toothbrush handle.

[0029] The powder mixed in step (1) is made into a national standard (GB / T9341-2008) sample, and its flexural modulus is 1068MPa measured in a standard laboratory, and its impact resistance at room temperature is 19.8kJ / m 2 .

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Abstract

The invention discloses a flexible toothbrush handle polypropylene material and a preparation method thereof. The flexible toothbrush handle polypropylene material is prepared from, by weight, 50-90%of a polypropylene random copolymer, 8-48% of calcium carbonate and 2% of color masterbatch, wherein calcium carbonate refers to light calcium carbonate in diameter of 200-2000mesh. The flexible toothbrush handle polypropylene material has the advantage that by adoption of the flexible polypropylene random copolymer as a main material and adding of calcium carbonate, rigidity is improved on the basis that the flexibility requirement is met, the product rigidity index is increased by 20% or more, and excellent rigidity-flexibility balance is achieved. The flexible toothbrush handle polypropylene material is suitable for manufacturing of flexible toothbrush handle products and is simple in manufacturing process.

Description

technical field [0001] The invention relates to a polypropylene material, in particular to a flexible toothbrush handle polypropylene material and a preparation method thereof. Background technique [0002] At present, toothbrush handles on the market are all made by injection molding. The handle of the toothbrush should be long and straight, and the middle part of the handle should be slightly bent upwards, with a certain degree of elasticity and a fixed fulcrum. The handle of the toothbrush is usually in a straight line with the head of the toothbrush, and the force on the teeth is uniform and convenient for vertical brushing. However, the handle of some special toothbrushes is designed with a certain curvature. The shape of the toothbrush handle is easy to grasp. The brush handle should preferably have non-slip rubber, which should be comfortable to hold, moderate in length, and have appropriate elasticity to buffer the excessive force when brushing teeth, so that the t...

Claims

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Application Information

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IPC IPC(8): C08L23/14C08K3/26
CPCC08K3/26C08K2003/265C08L23/14
Inventor 屠嵩涛李栋王兴仁李森笪文忠
Owner SINOPEC YANGZI PETROCHEM