Preparation method of TPU for submachine gun transparent magazine

A submachine gun and transparent technology, which is applied in the field of preparation of TPU for submachine gun transparent magazines, can solve the problems of no transparent products and achieve excellent performance

Inactive Publication Date: 2019-01-25
河北邦泰氨纶科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

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Method used

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  • Preparation method of TPU for submachine gun transparent magazine
  • Preparation method of TPU for submachine gun transparent magazine
  • Preparation method of TPU for submachine gun transparent magazine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The formula of TPU particles is shown in Table 1:

[0021] Table 1

[0022]

[0023] (1) Fully mix the macromolecular glycol, antioxidant, lubricant, light stabilizer, and organotin catalyst according to the mass ratio, and heat to 120°C;

[0024] (2) Heating the diisocyanate to 60°C in another reaction kettle;

[0025] (3) Heat the chain extender to 60°C; inject the three components into the sprue of the twin-screw extruder according to the above-mentioned mass ratio setting flow rate, fully mix and completely react in the twin-screw extruder, and set the screw temperature to 130-240°C;

[0026] (4) Organic montmorillonite nanoparticles are added to the material at the twin-screw exhaust port through a side feeder, and are evenly mixed with the material in the screw;

[0027] (5) Cut the particles under water and dry at 80-110°C to obtain TPU particles with a Shore hardness of 75D;

[0028] (6) Take 60 parts of dried TPU particles and 10 parts of compatibilizer,...

Embodiment 2

[0033] Prepared according to the process of Example 1, the ratio of TPU particles to glass fibers is 50:50.

Embodiment 3

[0035] Prepared according to the process of Example 1, the ratio of TPU particles to glass fibers is 40:60.

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Abstract

The invention discloses a preparation method of a TPU for a submachine gun transparent magazine, and belongs to the technical field of polyurethane for the magazine. The preparation method comprises the following steps: A, in parts by mass, injecting 35-45 parts of macromolecular diol, 35-45 parts of diisocyanate, 10-15 parts of a micromolecular chain extender, 1-4 parts of a lubricant, 0.2-1 partof an antioxidant, 0.1-0.5 part of a light stabilizer, 3-5 parts of organic montmorillonite, and a catalyst which accounts for 0.03-0.08% of a total weight of the above raw material components to a double-screw extruder, reacting and extruding, to obtain TPU particles with 70-80 D of hardness; B, taking 40-80 parts of the TPU obtained in the step A, 20-60 parts of surface-treated glass fibers, and 1-10 parts of a compatilizer, blending by using a two-stage screw, extruding and pelletizing, to obtain the TPU particles for the transparent submachine gun magazine. The TPU composite material prepared by the method has excellent strength, size stability, wear resistance and rigidity and the like, and is capable of meeting each physical requirement of the transparent magazine.

Description

technical field [0001] The invention belongs to the technical field of polyurethane for magazines, and in particular relates to a preparation method of TPU for transparent magazines of submachine guns, which can obtain high-performance transparent magazines and can conveniently observe the amount of remaining bullets. Background technique [0002] The traditional machine gun magazine is made of metal. Its outstanding advantages are its high strength, ability to adapt to super low temperature, and wear resistance. But its disadvantages are also obvious: high cost, heavy quality, complicated production process and long cycle. Aiming at the shortcomings of metal magazines, China has begun to study high-performance polymer materials to replace metal materials, and has also achieved certain results. The performance is equivalent to or surpasses that of metals. The use of high-performance polymer materials can greatly reduce steel consumption. In wartime, it can also be directly ...

Claims

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Application Information

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IPC IPC(8): C08L75/08C08K9/06C08K7/14C08G18/66C08G18/48C08G18/44C08G18/32C08K3/34
CPCC08G18/3206C08G18/44C08G18/4854C08G18/6607C08K3/346C08L75/08C08L2201/10C08K9/06C08K7/14
Inventor 郎增科贾振兴
Owner 河北邦泰氨纶科技有限公司
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