Preparation process and device of two-component sealant

A preparation process and technology of sealant, applied in the field of sealant, can solve the problems of insufficient strength of sealing parts, falling off of electrical parts, hidden dangers, etc., to avoid uneven mixing, improve poor mechanical properties, and improve tensile strength and toughness. Effect

Active Publication Date: 2021-09-21
柯斯摩尔新材料研究(深圳)有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] When the existing two-component sealant is actually used, the strength of the sealing part is insufficient due to the high temperature and humid environment in summer, which leads to the problem of falling off in the electrical components, which leads to potential safety hazards. Based on this, a two-component sealant is now provided. Preparation process and device of sealant

Method used

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  • Preparation process and device of two-component sealant
  • Preparation process and device of two-component sealant
  • Preparation process and device of two-component sealant

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Embodiment 1

[0026] In the embodiment of the present invention, a preparation process of a two-component sealant comprises the following steps:

[0027] Step 1: Obtain target raw material component A and component B, the weight ratio of component A and component B is 1:1;

[0028] The component A includes the following components by weight: 50-100 parts of polyether polyol, 2-60 parts of solid filler, 1-5 parts of catalyst, and 2-7 parts of defoamer; Parts include the following components: 18-79 parts of polyisocyanate, 30-80 parts of diluent, 10-30 parts of graphene;

[0029] Step 2: Add the raw materials in component A and component B to the mixing device to quickly complete the mixing, and obtain pretreatment component A and pretreatment component B respectively;

[0030] Step 3: Add the pretreatment component A and pretreatment component B into the corresponding reaction kettle, first heat treatment at a temperature of 110-120°C for 10 minutes, then lower the temperature to 80°C and v...

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Abstract

The invention discloses a preparation process and device of a two-component sealant, and the preparation process comprises the following steps: step 1, obtaining a target raw material component A and a component B according to a weight ratio of 1: 1; the component A comprising the following components in parts by weight: 50-100 parts of polyether polyol, 2-60 parts of solid filler, 1-5 parts of a catalyst and 2-7 parts of a defoaming agent; the component A being prepared from the following components in parts by weight: 18 to 79 parts of polyisocyanate, 30 to 80 parts of a diluent and 10 to 30 parts of graphene. According to the present invention, the prepolymer with the isocyanate as the end group is adopted as one of the polyisocyanate components, and the graphene is added, such that the components produce the synergistic effect during the potting process, the defect of poor mechanical property of the elastomer generated by the one-step method is improved, the tensile strength and the toughness are improved. The invention further provides a corresponding mixing device, and the problem that components are not mixed uniformly is solved.

Description

technical field [0001] The invention relates to the technical field of sealant, in particular to a preparation process and device of a two-component sealant. Background technique [0002] Two-component polyurethane adhesives usually consist of two components, A and B. It can be prepared according to a certain ratio before use. Component A (main agent) is a component containing active hydrogen, and component B (curing agent) is a polyurethane prepolymer component containing -NCO groups. The two-component polyurethane adhesive is a reactive adhesive, and the two components are mixed to undergo a cross-linking reaction to cure and bond. It can usually be cured at room temperature or heat cured, and its final bonding strength is greater than that of one-component adhesives, which can meet the requirements of structural adhesives. During the preparation, the raw materials and molecular weight of the two components can be adjusted to make it have a suitable viscosity at room te...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/08C09J11/04B01F3/00B01F3/12B01F7/18B01F15/02B01F23/00
CPCC09J175/08C09J11/04C08K3/042
Inventor 邓春苑张旺邓辉苑陈柳娟何子文
Owner 柯斯摩尔新材料研究(深圳)有限公司
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