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High-flowability, low-shrinkage and low-glossiness modified PP material and preparation process thereof

A low-gloss, low-shrinkage technology, applied in the low-gloss modified PP material and its preparation process, low-shrinkage, high-flow field, can solve the problems of low gloss, low shrinkage, low rigidity, etc., and achieve dimensional stability High performance, reduced part weight, low shrinkage effect

Pending Publication Date: 2021-11-05
广州仕天材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, conventional modified PP materials are usually high impact, low rigidity, low flow, low gloss, and low shrinkage, or high rigidity, low impact, high flow, high gloss, and high shrinkage, thereby limiting automotive interior parts. High fluidity is required for medium and easy injection molding, high rigidity and ultra-high impact, the parts have both strength resistance and impact resistance and are not easy to break, low density reduces the weight of the parts and low shrinkage parts injection molding has good dimensional stability, so for High-demand automotive interior parts require specially prepared high-performance modified PP materials

Method used

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  • High-flowability, low-shrinkage and low-glossiness modified PP material and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 80 parts of PP material, 10 parts of mineral filler material, 8 parts of toughening agent, 2 parts of matting agent, 0.2 part of lubricant erucamide, 10100.2 parts of antioxidant, 1680.2 parts of antioxidant, 0.3 part of light stabilizer, 1.5 parts of toner .

[0025] The preparation process of Example 1: Weigh the materials in the raw material formula according to the weight ratio, and place the PP material, toughening agent, mineral filler material, matting agent, lubricant, antioxidant, light stabilizer, and toner in proportion. In the stamping machine, the raw material is stamped to obtain the mixture A, and then the mixture A is uniformly stirred for 5-10 minutes, and then the extrusion temperature of the twin-screw extruder is adjusted to 190-210 °C, and the speed of the host equipment is adjusted to 500~700rpm, put the mixture A in the machine to extrude the mixture B, put the mixture B outside, let it cool naturally for 3~4 minutes, put the cooled mixture B on t...

Embodiment 2

[0027] 82 parts of PP material, 10 parts of mineral filling material, 8 parts of toughening agent, 0.2 part of lubricant erucamide, 10100.2 parts of antioxidant, 1680.2 parts of antioxidant, 0.3 part of light stabilizer, and 1.5 parts of toner.

[0028] The preparation process of Example 2: Weigh the materials in the raw material formula according to the weight ratio, place the above-mentioned materials in the punching machine, carry out the punching of the raw materials, obtain the mixture A, and then stir the mixture A uniformly for 5-10 minutes, Then adjust the extrusion temperature of the twin-screw extruder to 190-210°C, adjust the speed of the host equipment to 500-700rpm, place the mixture A in the machine to extrude the mixture B, and place the mixture B outside for natural extruding Cool for 3 to 4 minutes, place the cooled mixture B on a dryer, and dry it for 1 to 2 minutes to dry the internal moisture, and place the dried mixture B on a twin-screw extrusion granulato...

Embodiment 3

[0030] 77 parts of PP material, 10 parts of mineral filling material, 13 parts of toughening agent, 2 parts of matting agent, 0.2 part of lubricant erucamide, 10100.2 parts of antioxidant, 1680.2 parts of antioxidant, 0.3 part of light stabilizer, 1.5 parts of toner .

[0031] The preparation process of Example 3: Weigh the materials in the raw material formula according to the weight ratio, place the above-mentioned materials in the punching machine, carry out the punching of the raw materials, obtain the mixture A, and then stir the mixture A uniformly for 5-10 minutes, Then adjust the extrusion temperature of the twin-screw extruder to 190-210°C, adjust the speed of the host equipment to 500-700rpm, place the mixture A in the machine to extrude the mixture B, and place the mixture B outside for natural extruding Cool for 3 to 4 minutes, place the cooled mixture B on a dryer, and dry it for 1 to 2 minutes to dry the internal moisture, and place the dried mixture B on a twin-...

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Abstract

The invention belongs to the technical field of modified PP materials, and particularly relates to a high-flowability, low-shrinkage and low-glossiness modified PP material and a preparation process thereof, wherein the modified PP material is prepared from the following raw materials in parts by weight: 60-90 parts of a PP material, 5-15 parts of a POE material, 5-15 parts of a mineral filling material, 1-2 parts of a matting agent, 0.2-0.5 part of a lubricant, 0.2-1 part of a light stabilizer, 0.2-1 part of an antioxidant and 1-2 parts of toner. According to the high-flowability, low-shrinkage and low-glossiness modified PP material and the preparation process thereof provided by the invention, the material has high flowability and is easy to be subjected to injection molding through a specific material weighing ratio; meanwhile, ultrahigh impact is achieved, and a workpiece has strength resistance, is impact-resistant and is not prone to breakage; and the injection molding size stability of the low-shrinkage workpiece is good while the weight of the workpiece is reduced due to low density, and convenience is brought to people.

Description

technical field [0001] The invention relates to the field of modified PP materials, in particular to a high-flow, low-shrinkage, low-gloss modified PP material and a preparation process thereof. Background technique [0002] With the development of society, people's safety awareness is getting stronger and stronger, and higher requirements are put forward for the safety of cars. For car interior parts, if the gloss of polypropylene materials for car interior parts is high, there will be reflections, which will affect driving. In order to improve safety, the modified polypropylene materials of automotive interior parts need lower gloss. [0003] However, conventional modified PP materials are usually high impact, low rigidity, low flow, low gloss, and low shrinkage, or high rigidity, low impact, high flow, high gloss, and high shrinkage, thereby limiting automotive interior parts. High fluidity is required for medium and easy injection molding, high rigidity and ultra-high i...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L23/08C08K7/04C08K3/34C08K5/20C08K5/134C08K5/526
CPCC08L23/12C08L23/0815C08K7/04C08K3/34C08K5/20C08K5/1345C08K5/526
Inventor 文江河王志鹏倪世茂李敬玉
Owner 广州仕天材料科技有限公司