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Biodegradable material for dental floss pick handle and preparation method of biodegradable material

The technology of biodegradable material and dental floss stick is applied in the field of biodegradable material of dental floss stick handle and its preparation field, which can solve the problems of increasing product production cycle, reducing production efficiency, poor melt fluidity, etc. The effect of improving athletic ability and short molding cycle

Pending Publication Date: 2021-02-23
QINGDAO RICH PLASTIC NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Traditional dental floss handles are made of non-degradable materials such as polypropylene (PP) and polystyrene (PS). Since dental floss is a disposable product and consumes a lot, this non-degradable material will cause severe environmental pollution
At the same time, PLA and PBST have the disadvantages of slow crystallization speed, long cooling time, and poor melt fluidity during processing, which will greatly increase the production cycle of the product and reduce production efficiency

Method used

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  • Biodegradable material for dental floss pick handle and preparation method of biodegradable material
  • Biodegradable material for dental floss pick handle and preparation method of biodegradable material
  • Biodegradable material for dental floss pick handle and preparation method of biodegradable material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Step 1: Weigh 45kg polylactic acid, 25kg polyterephthalic acid-succinic acid-butylene glycol ester T, 0.05kg white oil, 0.4kg interacid amide, 0.3kg calcium stearate, 5kg citric acid according to the proportion Tributyl ester, 2kg potassium benzenesulfonate, 0.3kg phenolic antioxidant, 30kg talcum powder;

[0031] Step 2: Send polylactic acid, polybutylene terephthalate-succinate-butylene glycol ester and white oil into the mixer and stir evenly Step 2;

[0032] Step 3: Continue to add interacid amide, calcium stearate, tributyl citrate, phenolic antioxidant and potassium benzenesulfonate to the mixer, and stir until uniform;

[0033] Step 4: Add talcum powder to the mixer, continue to stir until uniform, and then send it to the twin-screw extruder for extrusion and granulation. The temperature, rotation speed and feeding speed of the twin-screw extruder are set as follows:

[0034]

[0035] Step 5: After the raw material mixture is melted and extruded, it is sequen...

Embodiment 2

[0037] Step 1: Weigh 50kg polylactic acid, 20kg polyterephthalic acid-succinic acid-butylene glycol ester T, 0.05kg white oil, 0.4kg interacid amide, 0.3kg calcium stearate, 3kg citric acid according to the proportion Tributyl ester, 1kg potassium benzenesulfonate, 0.3kg phenolic antioxidant, 30kg talcum powder;

[0038] Step 2: Send polylactic acid, polybutylene terephthalate-succinate-butylene glycol ester and white oil into the mixer and stir evenly Step 2;

[0039] Step 3: Continue to add interacid amide, calcium stearate, tributyl citrate, phenolic antioxidant and potassium benzenesulfonate to the mixer, and stir until uniform;

[0040] Step 4: Add talcum powder to the mixer, continue to stir until uniform, and then send it into a twin-screw extruder for extrusion and granulation. The subsequent preparation method is the same as in Example 1.

Embodiment 3

[0042] Step 1: Weigh 60kg polylactic acid, 5kg polyterephthalate-succinate-butylene glycol T, 0.05kg white oil, 0.4kg interacid amide, 0.3kg calcium stearate, 1.5kg lemon Acetate tributyl ester, 0.8kg potassium benzenesulfonate, 0.3kg phenolic antioxidant, 35kg talcum powder;

[0043] Step 2: Send polylactic acid, polybutylene terephthalate-succinate-butylene glycol ester and white oil into the mixer and stir evenly Step 2;

[0044] Step 3: Continue to add interacid amide, calcium stearate, tributyl citrate, phenolic antioxidant and potassium benzenesulfonate to the mixer, and stir until uniform;

[0045] Step 4: Add talcum powder to the mixer, continue to stir until uniform, and then send it into a twin-screw extruder for extrusion and granulation. The subsequent preparation method is the same as in Example 1.

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Abstract

The invention discloses a biodegradable material for a dental floss pick handle and a preparation method of the biodegradable material. The biodegradable material is prepared from the following substances in parts by weight: 45-95 parts of polylactic acid, 5-25 parts of poly(butylene succinate-co-terephthalate), 0-35 parts of an inorganic filler, 0.1-0.5 part of a lubricant, 0.1-0.5 part of a dispersing agent, 0.5-5 part of a plasticizer, 0.3-2 part of a nucleating agent and 0.1-0.4 part of an antioxidant. The dental floss rod handle has the characteristics of good fluidity, high cooling speedand short forming period during processing, and after being used and discarded, the dental floss rod handle made of the material can be decomposed into small molecular substances through bacteria inthe natural environment and finally decomposed into substances such as water and carbon dioxide, so that environmental pollution is avoided, meanwhile, the preparation method provided by the inventionis simple and feasible, has no complex equipment requirements, and is beneficial to large-scale production and application in the market.

Description

technical field [0001] The invention belongs to the field of production of dental floss stick preparation materials, in particular to a biodegradable material used for a dental floss stick handle and a preparation method thereof. Background technique [0002] With the rapid development of the petrochemical industry, plastic products bring great convenience to people's daily life, but the widespread use of plastic products has also caused environmental problems in the world today and the oil crisis is becoming more and more serious. Therefore, the development of biodegradable polymer materials to replace petroleum-based plastics has become a current research hotspot. [0003] The dental floss stick is a disposable hygiene tool for personal oral care, mainly composed of a dental floss stick handle and dental floss. According to statistics, the world consumes about billions of dental floss sticks every year, which not only provides a vast raw material market for dental floss s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08L67/02C08K13/02C08K3/34C08K5/20C08K5/098C08K5/11C08K5/42
CPCC08L67/04C08L2201/06C08L2205/02C08L2205/24C08L67/02C08K13/02C08K3/34C08K5/20C08K5/098C08K5/11C08K5/42
Inventor 刘杨郝艳平田洪池陈军张秀文任惠成牛茂平王凡赵宁艾雪
Owner QINGDAO RICH PLASTIC NEW MATERIAL
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