Preparation method of thermoplastic polyurethane rubber material used in eye speculum hook

A thermoplastic polyurethane and rubber material technology, applied in the field of thermoplastic polyurethane rubber material preparation, can solve the problems of low flexural strength, skin irritation, etc., and achieve the effect of good comprehensive mechanical properties

Inactive Publication Date: 2018-04-20
CHENGDU SHENGERJIA SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to: aim at the problems mentioned above, provide a kind of preparation method of the thermoplastic polyurethane rubber material that is used for eyelid speculum hook part, by changing t

Method used

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  • Preparation method of thermoplastic polyurethane rubber material used in eye speculum hook
  • Preparation method of thermoplastic polyurethane rubber material used in eye speculum hook
  • Preparation method of thermoplastic polyurethane rubber material used in eye speculum hook

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[0033] In order to better implement the thermoplastic polyurethane rubber of the present invention, the preparation method of the thermoplastic polyurethane rubber includes the following steps:

[0034] Step 1. Add TPU resin, wax powder, silica and dispersant into the reactor, and then stir and disperse uniformly with a mixer at a speed of 800 rad / min to obtain a base material;

[0035] Step 2. Add glass fiber and titanium dioxide to the coupling reaction tank, stir and mix uniformly at 80°C at a stirring speed of 800 rad / min. While stirring, spray the silane coupling agent directly into the mixture to keep warm The mixture is prepared after 20 minutes;

[0036] Step 3. Mix the base material, mixture, antioxidant, leveling agent and zinc stearate uniformly in a mixer, and then send them to an internal mixer for mixing for 8 hours;

[0037] Step 4. After the mixing is finished, let it solidify and form to obtain a rubber compound, which can be post-processed.

[0038] Further, in step 4...

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Abstract

The invention discloses a preparation method of a thermoplastic polyurethane rubber material used for the hook part of an eyelid speculum, comprising the following steps: Step 1, 80 parts by weight of TPU resin, 7-9 parts by weight of wax powder, 3-5 parts by weight of wax powder, Part of silicon dioxide and 0.5-1 weight part of dispersant are stirred and dispersed evenly to obtain base material; step 2, stirring and mixing 2-5 weight parts of glass fiber and 18-26 weight parts of titanium dioxide, and then adding 1 The silane coupling agent of 3 parts by weight prepares the mixture; Step 3, the antioxidant of base material, mixture, 1-3 parts by weight, leveling agent of 0.5-1 parts by weight and the stearin of 1-3 parts by weight Zinc acid mixed evenly, and then mixed for 8h and other steps. The present invention mainly solves the problems of the traditional thermoplastic polyurethane rubber, which are relatively irritating to the skin and low in bending strength. The resistance is not higher than 9%, and it has good comprehensive mechanical properties.

Description

technical field [0001] The invention relates to the technical field of polyurethane material preparation, in particular to a preparation method of a thermoplastic polyurethane rubber material used for a hook part of a lid speculum. Background technique [0002] The eyelid speculum is a special medical device for the ophthalmology department of the hospital. It is used to expand the eyelid (the two tissues above and below the eye when the eyelid is used), and most of them are used for ophthalmic surgery. Generally, the eyelid opener is a screw-type rotary eyelid opener, and its operation method is: hook the eyelid with the hook of the eyelid opener, then screw it into the screw, and turn the two ends of the eyelid opener (that is, the clamp arm in this application) outward Dilation, the eyelids are widened. It can be seen that the traditional eyelid opener requires two-handed operation, that is, one hand needs to hold the eyelid opener to stabilize its position, and the othe...

Claims

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Application Information

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IPC IPC(8): C08L75/04C08L91/06C08K13/06C08K9/06C08K7/14C08K3/22C08K3/36C08K5/098
CPCC08L75/04C08K2003/2241C08L2203/02C08L2207/04C08L91/06C08K13/06C08K9/06C08K7/14C08K3/22C08K3/36C08K5/098
Inventor 卢晔
Owner CHENGDU SHENGERJIA SCI & TECH
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