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A scratch-resistant, high-impact polypropylene resin material and preparation method thereof

A high-impact polypropylene and polypropylene resin technology, applied in the field of polypropylene materials, can solve the problems of low impact resistance and heavy weight, and achieve low shrinkage, low odor, good scratch resistance and processing performance Effect

Active Publication Date: 2018-06-05
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current scratch-resistant high-impact polypropylene resin mostly uses a large amount of mineral filling or nucleating agent to modify polypropylene, which is heavy and has low impact resistance.

Method used

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  • A scratch-resistant, high-impact polypropylene resin material and preparation method thereof
  • A scratch-resistant, high-impact polypropylene resin material and preparation method thereof
  • A scratch-resistant, high-impact polypropylene resin material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Preparation of polypropylene resin: Add propylene into the loop reactor, add catalyst and external electron donor, control the reaction pressure of the loop reactor to 3.25~3.55MPa, the reaction temperature is 66.0°C±0.5°C, and the concentration React with hydrogen at 4700~5300ppm to obtain polypropylene powder with a melt flow rate of 65~75g / 10min; then through a gas phase reactor, add propylene and ethylene, where the concentration of ethylene is 9~14%, and finally obtain a melt The flow rate is 26~30g / 10min, the bonded ethylene content is 9~12%, the weight average molecular weight is 190,000~210,000, and the molecular weight distribution is 6~7.

[0027] The catalyst used in this example is the fourth-generation Z-N catalyst DQC-602 of Beijing Aoda Company. The fourth-generation catalyst is an aromatic diester / siloxane combination, which has high polymerization activity, high stereospecificity, hydrogen It has the characteristics of adjustable balance and polymer iso...

Embodiment 2

[0029] Take the polypropylene basic powder prepared in Example 1, acid absorbing agent, scratch-resistant agent and antioxidant according to the following mass ratio and mix evenly, then extrude and granulate at 210-230°C to obtain scratch-resistant, high-impact Polypropylene resin material.

[0030] Polypropylene resin: scratch resistance agent = 100: 0.5

[0031] Polypropylene resin: antioxidant = 100: 0.12

[0032] Polypropylene resin:acid absorber=100:0.05.

[0033] The antioxidant in this embodiment is a compound of phenolic antioxidant and phosphite antioxidant in a ratio of 3:2. Wherein, the phenolic antioxidant adopts 3-(3,5 bis-tert-butyl-4-hydroxycyclohexyl) propionate (1010). Phosphorous antioxidants use tris(2,4-di-tert-butylphenyl)phosphite (168), bis(2,4-di-tert-butylphenol)pentaerythritol diphosphite (622) or bis( 2,6-di-tert-butyl-4-methylphenyl) pentaerythritol diphosphate (PEP36). The acid absorbing agent is calcium stearate, and the anti-scratch agent i...

Embodiment 3

[0035] Take the polypropylene basic powder prepared in Example 1, acid absorbing agent, scratch-resistant agent and antioxidant according to the following mass ratio and mix evenly, then extrude and granulate at 210-230°C to obtain scratch-resistant, high-impact Polypropylene resin material.

[0036] Polypropylene resin: scratch resistance agent = 100: 0.3

[0037] Polypropylene resin: antioxidant = 100: 0.12

[0038] Polypropylene resin:acid absorber=100:0.05.

[0039]The antioxidant in this embodiment is a compound of phenolic antioxidant and phosphite antioxidant in a ratio of 3:2. Wherein, the phenolic antioxidant adopts 3-(3,5 bis-tert-butyl-4-hydroxycyclohexyl) propionate (1010). Phosphorous antioxidants use tris(2,4-di-tert-butylphenyl)phosphite (168), bis(2,4-di-tert-butylphenol)pentaerythritol diphosphite (622) or bis( 2,6-di-tert-butyl-4-methylphenyl) pentaerythritol diphosphate (PEP36). The acid absorbing agent is calcium stearate, and the anti-scratch agent is...

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Abstract

The invention discloses a scratch-resistant high-impact polypropylene resin material. The melt flow rate is 26-30 g / 10 min, the content of bonding ethylene is 9-12%, the notch impact strength of a simply supported beam is larger than or equal to 10 kJ / m<2>, the flexural modulus is larger than or equal to 1100 MPa, and the heat distortion temperature is higher than or equal to 80 DEG C. The scratch-resistant high-impact polypropylene resin material is prepared from polypropylene resin, a scratch-resistant agent, an antioxidant and acid acceptor as main raw materials, and the mass ratio of polypropylene resin to scratch-resistant agent to antioxidant to acid acceptor is 100:0.065-0.28:0.1-0.25:0.05-0.1 with the amount of polyethylene as the baseline. The invention further discloses a preparing method of the polypropylene resin material. The polypropylene resin material is resistant to scratches and high in impact and can be directly injected to manufacture automobile interior components such as a protective plate and a stand column just by adding a small quantity of additives.

Description

technical field [0001] The invention relates to a polypropylene material, in particular to a scratch-resistant, high-impact polypropylene resin material and a preparation method. Background technique [0002] Along with the development of automobile industry technology, environmental protection pressure and consumer demand, people are constantly increasing the requirements for light weight, impact resistance, low fuel consumption and safety of automobiles. The parts may be rubbed or scratched by hard objects. Affected by light and heat aging during the use of the car, defects such as fading, tarnishing, surface powdering, surface stickiness and car interior odor have also become the main factors that negatively affect customers' overall vehicle quality evaluation. However, the current scratch-resistant and high-impact polypropylene resins mostly use a large amount of mineral filling or nucleating agent to modify polypropylene, which is heavy and has low impact resistance. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/12C08L23/14C08L83/04C08K5/098C08F110/06C08F210/06
CPCC08F110/06C08F210/06C08L23/12C08L2205/03C08L23/14C08L83/04C08K5/098C08F210/02
Inventor 刘国禹周小群钟向宏冯家盛蔡伟梁胜彪梁志斌王家华邓翠花黄艳芳陈小菊张飘凌陈仕兵王碧琼柯宇振李梅
Owner CHINA PETROLEUM & CHEM CORP